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900 MHz / 1800 MHzFilter, Combiners, Amplifiersfor Mobile Communications
Antennen . Electronic
“Quality leads the way”Being the oldest and largest antenna manufacturer worldwide, we take on every daythe challenge arising from our own motto. One of our basic principles is to look alwaysfor the best solution in order to satisfy our customers.Our quality assurance system conforms to DIN EN ISO 9001 and applies to the productrange of the company: Antenna systems, communication products as well as activeand passive distribution equipment.
2
Filters
Duplexers
Transmitter Combiners and Multiband Combiners
System Components
Amplifiers
3
4
Type No. Page Type No. Page
722 437 42722 440 42723 387 54724 704 38725 704 16725 705 14727 380 16727 381 16728 044 52728 055 14728 954 42729 646 49729 745 49729 812 52730 312 14780 066 62780 164 64780 250 63780 251 65780 252 66790 115 12790 384 8790 385 8790 386 26790 533 10790 534 10790 536 30790 881 50791 145 44791 375 55791 376 55791 397 22791 398 20791 463 42791 498 57791 568 60791 594 22791 600 40791 744 26791 946 18791 962 41792 002 60792 069 53792 078 40792 079 41792 104 28792 105 28792 127 39792 145 56
792 146 56792 242 28792 481 34792 541 32K 62 26 11 1 58K 62 26 11 9 58K 62 26 20 1 59K 62 26 20 7 59K 62 26 21 1 59K 62 26 21 7 59K 62 26 30 1 59K 62 26 30 7 59K 62 26 31 1 59K 62 26 31 7 59K 62 26 40 1 58K 62 26 41 1 58K 62 26 50 1 59K 62 26 50 7 59K 62 26 51 1 59K 62 26 61 1 58K 63 70 61 48K 63 70 67 48K 63 73 61 50K 63 73 62 1 50
Summary of Types
The articles are listed by type number in numerical order.
5
Band-pass Filter 790 385 890 – 915 MHz < 50 W 8
Band-pass Filter 790 384 935 – 960 MHz < 50 W 8
Band-pass Filter 790 534 890 – 915 MHz < 250 W 10
Band-pass Filter 790 533 935 – 960 MHz < 250 W 10
Band-pass Filter 790 115 935 – 960 MHz < 500 W 12
Band-pass Filter 725 705 890 … 960 MHz < 50 W 14
Band-pass Filter 730 312 890 … 960 MHz < 50 W 14
Band-pass Filter 728 055 890 … 960 MHz < 50 W 14
Band-stop Filter 725 704 890 … 960 MHz < 100 W 16
Band-stop Filter 727 380 890 … 960 MHz < 100 W 16
Band-stop Filter 727 381 890 … 960 MHz < 100 W 16
Band-pass Filter 791 946 1710 – 1785 MHz < 35 W 18
Band-pass Filter 791 398 1800 … 2000 MHz < 15 W 20
Band-stop Filter 791 594 1550 … 1700 MHz < 15 W 22
Band-stop Filter 791 397 1700 … 1900 MHz < 15 W 22
Description Type No. Frequency range Input power Page
Description Type No. Frequency range Input power Page
Description Type No. Frequency range Input power Page
Duplexer 790 386 Low band: 890 – 915 MHz < 50 W 26High band: 935 – 960 MHz < 50 W
Duplexer 791 744 Low band: 876 – 880 MHz < 50 W 26High band: 921 – 925 MHz < 50 W
Duplexer 792 104 Low band: 890 – 915 MHz < 50 W 28High band: 935 – 960 MHz < 250 W
Duplexer 792 105 Low band: 890 – 915 MHz < 50 W 28High band: 935 – 960 MHz < 250 W
Duplexer 792 242 Low band: 890 – 915 MHz < 50 W 28High band: 935 – 960 MHz < 250 W
Duplexer 790 536 Low band: 890 – 915 MHz < 50 W 30High band: 935 – 960 MHz < 500 W
Duplexer 792 541 Low band: 1710 – 1785 MHz < 100 W 32High band: 1805 – 1880 MHz < 100 W
Duplexer 792 481 Low band: 1710 – 1785 MHz < 100 W 34High band: 1805 – 1880 MHz < 100 W
Filter Transmitter Combiner 724 704 935 … 960 MHz < 50 W 38
Autotune Transmitter Combiner 792 127 935 … 960 MHz < 50 W 39
Hybrid Transmitter Combiner 791 600 925 – 960 MHz < 40 W 40
Hybrid Transmitter Combiner 792 078 925 – 960 MHz < 40 W 40
Hybrid Transmitter Combiner 791 962 1805 – 1880 MHz < 40 W 41
Hybrid Transmitter Combiner 792 079 1805 – 1880 MHz < 40 W 41
Multiband Combiner 728 954 Input 1: 68 – 470 MHz < 50 W 42Input 2: 870 – 970 MHz < 50 W
Multiband Combiner 791 463 Input 1: 68 – 470 MHz < 50 W 42Input 2: 870 – 970 MHz < 50 W
Multiband Combiner 722 437 Input 1: 68 – 470 MHz < 500 W 42Input 2: 870 – 970 MHz < 300 W
Multiband Combiner 722 440 Input 1: 68 – 470 MHz < 500 W 42Input 2: 870 – 970 MHz < 300 W
Multiband Combiner 791 145 Input 1: 50 – 1000 MHz < 100 W 44Input 2: 1600 – 2000 MHz < 50 W
Filters:
Duplexers:
Transmitter Combiners and Multiband Combiners:
Summary of Articles
6
Receiver Multicoupler 780 066 870 – 915 MHz 3 dB 62
Receiver Multicoupler 780 250 870 – 915 MHz 3 dB 63
Low Noise Amplifier 780 164 890 – 915 MHz 15 dB 64
Receiver Multicoupler 780 251 1710 – 1785 MHz 8 dB 65
Low Noise Amplifier 780 252 1710 – 1785 MHz 15 dB 66
3-dB Coupler K 63 70 61 806 – 960 MHz < 500 W 48
3-dB Coupler K 63 70 67 806 – 960 MHz < 500 W 48
3-dB Coupler 729 646 806 – 960 MHz < 240 W 49
3-dB Coupler 729 745 806 – 960 MHz < 240 W 49
Hybrid Ring Junction K 63 73 61 806 – 960 MHz < 100 W 50
Hybrid Ring Junction K 63 73 62 1 806 – 960 MHz < 100 W 50
Hybrid Ring Junction 790 881 890 – 960 MHz < 100 W 50
Decoupled Power Splitter 728 044 806 – 960 MHz < 100 W 52
Decoupled Power Splitter 729 812 806 – 960 MHz < 100 W 52
4:4 Power Splitter 792 069 890 – 960 MHz < 200 W 53
Measuring Directional Coupler 723 387 935 – 960 MHz < 350 W 54
Circulator 791 375 890 – 960 MHz < 150 W 55
Circulator 791 376 890 – 960 MHz < 150 W 55
3-dB Coupler 792 146 1710 – 1900 MHz < 350 W 56
3-dB Coupler 792 145 1710 – 1900 MHz < 350 W 56
Hybrid Ring Junction 791 498 1710 – 1880 MHz < 50 W 57
50-Ω load K 62 26 61 1 0 – 2000 MHz 0.5 W 58
50-Ω load K 62 26 11 9 0 – 2000 MHz 2 W 58
50-Ω load K 62 26 11 1 0 – 2000 MHz 2 W 58
50-Ω load K 62 26 40 1 0 – 2000 MHz 10 W 58
50-Ω load K 62 26 41 1 0 – 2000 MHz 10 W 58
50-Ω load K 62 26 20 1 0 – 2000 MHz 25 W 59
50-Ω load K 62 26 21 1 0 – 2000 MHz 25 W 59
50-Ω load K 62 26 20 7 0 – 2000 MHz 25 W 59
50-Ω load K 62 26 21 7 0 – 2000 MHz 25 W 59
50-Ω load K 62 26 30 1 0 – 2000 MHz 50 W 59
50-Ω load K 62 26 31 1 0 – 2000 MHz 50 W 59
50-Ω load K 62 26 30 7 0 – 2000 MHz 50 W 59
50-Ω load K 62 26 31 7 0 – 2000 MHz 50 W 59
50-Ω load K 62 26 50 1 0 – 1000 MHz 100 W 59
50-Ω load K 62 26 51 1 0 – 1000 MHz 100 W 59
50-Ω load K 62 26 50 7 0 – 1000 MHz 100 W 59
Combiner System 791 568 806 – 960 MHz < 240 W 60
Combiner System 792 002 806 – 960 MHz < 240 W 60
Description Type No. Frequency range Input power Page
System Components:
Summary of Articles
Description Type No. Frequency range Gain Page
Amplifiers:
Filters
7
8
Band-pass Filter, 50 W890 – 915 / 935 – 960 MHz
The band-pass filter is suitable for use as areceiving or transmitting filter for one orseveral receiving or transmitting channels.
It can be used:– to improve the input selectivity of receivers
and amplifiers,– to increase the isolation of transmitters
whose respective antennas are mountedclose together,
– to suppress noise sidebands and inter-modulation products,
– as a duplexer component.
Design and construction:The band-pass filter consists of 6 high Qresonators.
Filter characteristics:Broad pass band range with low insertion loss, high stop band attenuation, steepenedfilter curve through additional stop poles.
790 385
Type No. 790 385 790 384
Technical Data
Pass band range 890.0 – 915.0 MHz 935.0 – 960.0 MHzInsertion loss < 0.7 dBStop band range 935.0 – 960.0 MHz 890.0 – 915.0 MHzStop band attenuation > 65 dBVSWR (input) < 1.3 (890.0 – 915.0 MHz) < 1.3 (935.0 – 960.0 MHz)Impedance 50 ΩInput power < 50 WTemperature range -10 … +55 °CConnectors N female, silver-platedMaterial Brass, silver-platedInstallation With 3 screws (max. 3 mm dia.)Weight 0.67 kgPacking size 190 x 80 x 155 mmDimensions (w x h x d) 160 x 31 x 141 mm (including connectors and mounting feet)
9
Band-pass Filter, 50 W890 – 915 / 935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
697.5 747.5 797.5 847.5 897.5 947.5 997.5 1047.5 1097.5 1147.5 1197.5A
ttenu
atio
n/dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
897.5 907.5 917.5 927.5 937.5 947.5 957.5 967.5 977.5 987.5 997.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1,0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
652.5 702.5 752.5 802.5 852.5 902.5 952.5 1002.5 1052.5 1102.5 1152.5
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
852.5 862.5 872.5 882.5 892.5 902.5 912.5 922.5 932.5 942.5 952.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5.
3.0
3.5
4.0
4.5
5.0
877.5 882.5 887.5 892.5 897.5 902.5 907.5 912.5 917.5 922.5 927.5
Atte
nuat
ion/
dB
Frequency/MHz
790 385 790 384Diagram I:
Diagram II:
Diagram VI:Diagram III:
Diagram V:
Diagram IV:
Detail seediagram II
Detail seediagram V
Detail seediagram III
Detail seediagram VI
10
Pass band range 890.0 – 915.0 MHz 935.0 – 960.0 MHzInsertion loss < 0.4 dBStop band range 935.0 – 960.0 MHz 890.0 – 915.0 MHzStop band attenuation > 65 dBVSWR (input) < 1.3 (890.0 – 915.0 MHz) < 1.3 (935.0 – 960.0 MHz)Impedance 50 ΩInput power < 250 WTemperature range -10 … +55 °CConnectors 7-16 female, silver-platedMaterial Brass, silver-platedInstallation With 3 screws (max. 4 mm dia.)Weight 1.5 kgPacking size 230 x 130 x 250 mmDimensions (w x h x d) 160 x 62 x 221 mm (including connectors and mounting feet)
Type No. 790 534 790 533
Band-pass Filter, 250 W890 – 915 / 935 – 960 MHz
Technical Data
790 533
The band-pass filter is suitable for use as areceiving or transmitting filter for one orseveral receiving or transmitting channels.
It can be used:– to improve the input selectivity of receivers
and amplifiers,– to increase the isolation of transmitters
whose respective antennas are mountedclose together,
– to suppress noise sidebands and inter-modulation products,
– as a duplexer component.
Design and construction:The band-pass filter consists of 6 high Qresonators.
Filter characteristics:Broad pass band range with low insertion loss, high stop band attenuation, steepenedfilter curve through additional stop poles.
11
Band-pass Filter, 250 W890 – 915 / 935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
697.5 747.5 797.5 847.5 897.5 947.5 997.5 1047.5 1097.5 1147.5 1197.5A
ttenu
atio
n/dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
897.5 907.5 917.5 927.5 937.5 947.5 957.5 967.5 977.5 987.5 997.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Atte
nuat
ion/
dB
Frequency/MHz
790 533Diagram IV:
Diagram V:
Diagram VI:
Detail seediagram V
Detail seediagram VI
0
10
20
30
40
50
60
70
80
90
100
652.5 702.5 752.5 805.5 852.5 902.5 952.5 1002.5 1052.5 1102.5 1152.5
Atte
ntua
tion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
852.5 862.5 872.5 882.5 892.5 902.5 912.5 922.5 932.5 942.5 952.5
Atte
ntua
tion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
877.5 882.5 887.5 892.5 897.5 902.5 907.5 912.5 917.5 922.5 927.5
Atte
ntua
tion/
dB
Frequency/MHz
790 534Diagram I:
Diagram II:
Diagram III:
Detail seediagram II
Detail seediagram III
12
Band-pass Filter, 500 W935 – 960 MHz
Type No. 790 115
Technical Data
Pass band range 935.0 – 960.0 MHzInsertion loss < 0.3 dBStop band range 890.0 – 915.0 MHzStop band attenuation > 65 dBVSWR (input) < 1.3 (935.0 – 960.0 MHz)Impedance 50 ΩInput power < 500 WTemperature range -10 … +55 °CConnectors 7-16 female, silver-platedMaterial Brass, silver-plated (RAL 7032)Installation With 4 screws (max. 5 mm dia.)Weight 5.9 kgPacking size Approx. 340 x 160 x 430 mmDimensions (w x h x d) 267 x 118 x 358 mm
(including connectors and mounting feet)
The band-pass filter is suitable for use as areceiving or transmitting filter for one orseveral receiving or transmitting channels.
It can be used:– to improve the input selectivity of receivers
and amplifiers,– to increase the isolation of transmitters
whose respective antennas are mountedclose together,
– to suppress noise sidebands and inter-modulation products,
– as a duplexer component.
Design and construction:The band-pass filter consists of 6 high Qresonators.
Filter characteristics:Broad pass band range with low insertion loss, high stop band attenuation, steepenedfilter curve through additional stop poles.
13
Band-pass Filter, 500 W935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
697.5 747.5 797.5 847.5 897.5 947.5 997.5 1047.5 1097.5 1147.5 1197.5
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
897.5 907.5 917.5 927.5 937.5 947.5 957.5 967.5 977.5 987.5 997.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Atte
nuat
ion/
dB
Frequency/MHz
Diagram I:
Diagram II:
Diagram III:
Detail seediagram II
Detail seediagram III
14
Type No. 725 705 730 312 728 0551-cavity band-pass filter 2-cavity band-pass filter 3-cavity band-pass filter
Band-pass Filter890 … 960 MHz
Technical Data
The band-pass filter is used when severalfrequencies are to be attenuated outside anarrow passband.It is particularly suitable for laboratory testpurposes, because of its ease of tuning.
It can be used:– to improve the input selectivity of receivers
and amplifiers,– to increase the isolation of transmitters
whose respective antennas are mountedclose together,
– to suppress noise sidebands and inter-modulation products,
– as a combiner component.
Design and construction:The band-pass filter consists of capacitivelyshortened λ/4 coaxial resonators. Theresonators of the multicavity band-pass filterare interconnected by cables of λ/4 length. Thepass band frequency and the insertion loss aretunable.
Filter characteristics:Narrow passband with low insertion loss, highstop-band attentuation. Variable filter curvesare possible in order to meet the desired stop-band attentuation.
Tuning:The band-pass filter is tuned to the desiredpassband frequency and insertion loss at thefactory. Please specify desired pass bandfrequency and insertion loss (curve A, B, C)when ordering.
The band-pass filter can also be tuned on sitefollowing the instructions provided.
725 705
728 055
Frequency range 890 … 960 MHzInsertion loss 0.25 … 1.0 dB, tunable 0.5 … 2.0 dB, tunable 0.75 … 3.0 dB, tunable
Tuning examples Tuning examples Tuning examples0.25 dB 0.5 dB 1.0 dB 0.5 dB 1.0 dB 2.0 dB 0.75 dB 1.5 dB 3.0 dBCurve A Curve B Curve C Curve A Curve B Curve C Curve A Curve B Curve C
VSWR < 1.2 (at operating frequency)Impedance 50 ΩInput power < 50 W < 25 W < 10 W < 50 W < 25 W < 10 W < 50 W < 25 W < 10 WTemperature range +10 … +40 °CConnectors N female, silver-platedMaterial Brass, silver-platedInstallation With 4 screws (max. 6 mm dia.)Weight 2 kg 4.5 kg 6.5 kgPacking size Approx. 125 x 170 x 200 mm Approx. 290 x 205 x 370 mm Approx. 400 x 250 x 420 mmDimensions (w x h x d) 115 x 124 x max. 184 mm 260 x 150 x max. 336 mm Max. 316 x 150 x max. 336 mm
(incl. connectors) (incl. connectors) (incl. connectors)
15
Band-pass Filter890 … 960 MHzTypical attenuation curves
0
2
4
6
8
10
12
14
16
18
20
-2.5 -2.0 -1.5 -1.0 -0.5 f0 +0.5 +1.0 +1.5 +2.0 +2.5A
tte
nu
atio
n/d
B
Frequency/MHz
A
B
C
0
2
4
6
8
10
12
14
16
18
20
-2.5 -2.0 -1.5 -1.0 -0.5 f0 +0.5 +1.0 +1.5 +2.0 +2.5
Atte
nuat
ion/
dB
Frequency/MHz
A
B
0
2
4
6
8
10
12
14
16
18
20
-2.5 -2.0 -1.5 -1.0 -0.5 f0 +0.5 +1.0 +1.5 +2.0 +2.5
Atte
nuat
ion/
dB
Frequency/MHz
A
BC
0
10
20
30
40
50
60
70
80
90
100
-25 -20 -15 -10 -5 f0 +5 +10 +15 +20 +25
Atte
nuat
ion/
dB
Frequency/MHz
A
B
C
0
10
20
30
40
50
60
70
80
90
100
-25 -20 -15 -10 -5 f0 +5 +10 +15 +20 +25
Att
en
ua
tion
/dB
Frequency/MHz
A
B
C
0
10
20
30
40
50
60
70
80
90
100
-25 -20 -15 -10 -5 f0 +5 +10 +15 +20 +25
Atte
nuat
ion/
dB
Frequency/MHz
A
B
C
1-cavity Band-pass Filter 725 705
2-cavity Band-pass Filter 730 312
3-cavity Band-pass Filter 728 055
Tuning examples:
Diagram I:
Diagram III:
Diagram V: Diagram VI:
Diagram IV:
Diagram II:
Detail seediagram II
Detail seediagram IV
Detail seediagram VI
C
16
Band-stop Filter890 … 960 MHz
Technical Data
The band-stop filter is used when individualfrequencies are to be attenuated.It is particularly suitable for laboratory testpurposes, because of its ease of tuning.
It can be used:– to attenuate interfering signals,– to increase the isolation between a trans-
mitter and a receiver,– to suppress intermodulation products.
Design and construction:The band-stop filter consists of capacitivelyshortened λ/4 coaxial resonators. Theresonators of the multicavity band-stop filterare interconnected by cables of λ/4 length.The stop band frequency and the stop bandattenuation are tunable.
Filter characteristics:Narrow stop band with high stop bandattenuation, low insertion loss outside thestop band range.
Tuning:The band-stop filter is tuned to the desiredstop band frequency and stop bandattenuation at the factory.When ordering please specify stop bandfrequency and stop band attenuation.
The band-stop filter can also be tuned on sitefollowing the instructions provided.
The resonators of the 2-cavity or 3-cavityband-stop filters can be tuned independently.In this way, 2 or 3 different interfering signalscan be suppressed or one single interferingsignal can be especially attenuated.
725 704
727 381
Type No. 725 704 727 380 727 3811-cavity band-stop filter 2-cavity band-stop filter 3-cavity band-stop filter
Frequency range 890 … 960 MHzStop band attenuation 0 … 25 dB, tunable 0 … 50 dB, tunable 0 … 75 dB, tunableImpedance 50 ΩInput power < 100 W (Insertion loss < 0.5 dB)Temperature range +10 … +40 °CConnectors N female, silver-platedMaterial Brass, silver-platedInstallation With 4 screws (max. 6 mm dia.)Weight 2.0 kg 4.5 kg 6.5 kgPacking size Approx. 130 x 160 x 240 mm Approx. 430 x 160 x 335 mm Approx. 430 x 160 x 335 mmDimensions (w x h x d) 115 x 124 x max. 210 mm Max. 405 x 137 x 260 mm Max. 405 x 137 x 260 mm
(incl. connectors) (incl. connectors) (incl. connectors)
17
Band-stop Filter890 … 960 MHzTypical attenuation curves
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10A
ttenu
atio
n/dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
1-cavity Band-stop Filter 725 704
2-cavity Band-stop Filter 727 380
3-cavity Band-stop Filter 727 381
Tuning examples:
Diagram I: Diagram II:
Diagram III: Diagram IV:
Diagram V: Diagram VI:
Detail seediagram II
Detail seediagram IV
Detail seediagram VI
18
Band-pass Filter1710 – 1785 MHz
Type No. 791 946
Technical Data
Pass band range 1710 – 1785 MHzInsertion loss < 1.3 dBStop band range 1805 – 1880 MHzStop band attenuation > 70 dBVSWR (input) < 1.4 (1710 – 1785 MHz)Impedance 50 ΩInput power < 35 WTemperature range -10 … +55 °CConnectors SMA femaleMaterial Brass, silver-platedInstallation With 3 screws (max. 3 mm dia.)Weight 0.51 kgPacking size Approx. 195 x 85 x 250 mmDimensions (w x h x d) 94 x 30 x 150 mm
(including connectors and mounting feet)
The band-pass filter is suitable for use as areceiving or transmitting filter for one orseveral receiving or transmitting channels.
It can be used:– to improve the input selectivity of receivers
and amplifiers,– to increase the isolation of transmitters
whose respective antennas are mountedclose together,
– to suppress noise sidebands and inter-modulation products,
– as a duplexer component.
Design and construction:The band-pass filter consists of 10 high Qresonators.
Filter characteristics:Broad pass band range with low insertion loss, high stop band attenuation, steepenedfilter curve through additional stop poles.
19
Band-pass Filter1710 – 1785 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
1497.5 1547.5 1597.5 1647.5 1697.5 1747.5 1797.5 1847.5 1897.5 1947.5 1997.5
Atte
nuat
ion/
dB
Frequency/MHz
0
10
20
30
40
50
60
70
80
90
100
1647.5 1667.5 1687.5 1707.5 1727.5 1747.5 1767.5 1787.5 1807.5 1827.5 1847.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1697.5 1707.5 1717.5 1727.5 1737.5 1747.5 1757.5 1767.5 1777.5 1787.5 1897.5
Atte
nuat
ion/
dB
Frequency/MHz
Diagram I:
Diagram II:
Diagramm III:
Detail seediagram II
Detail seediagram III
20
Frequency range 1800 … 2000 MHzTuning examples
f0 = 1800 MHz f0 = 1900 MHz f0 = 2000 MHzInsertion loss
at f0 … f0 ± 1.75 MHz < 1.2 dB < 0.9 dB < 0.8 dBStop band attenuation
at f0 ± 10 MHz > 16 dB >13 dB > 9 dBat f0 ± 15 MHz > 24 dB > 20 dB > 15 dBat f0 ± 20 MHz > 29 dB > 25 dB > 20 dBat f0 ± 25 MHz > 33 dB > 29 dB > 24 dB
VSWR (input)at f0 … f0 ± 1.75 MHz < 1.6 < 1.35 < 1.3
Impedance 50 ΩInput power < 15 WTemperature range 0 … +50 °CConnectors N-female, silver-platedMaterial Mounting plate: aluminium
Band-pass filter: brass, silver-platedColour Grey (RAL 7032)Installation With 4 screws (max. 4 mm dia.)Weight 0.6 kgPacking size Approx. 160 x 90 x 210 mmDimensions (w x h x d) 130 x 58 x 170 mm (incl. mounting plate)
Type No. 791 3982-cavity band-pass filter
Band-pass Filter1800 … 2000 MHz
Technical Data
The band-pass filter can be used if severalfrequencies outside of a narrow pass band areto be attenuated. Due to its easy tuning it isparticularly suitable for laboratory test purposes.
It can be used:– to improve the input selectivity of receivers
or amplifiers,– to increase the isolation of transmitters
whose respective antennas are mounted close together.
– to suppress noise sidebands and inter-modulation products,
– as a combiner component.
Design and construction:The band-pass filter consists of two capacitivelycoupled λ/4 coaxial resonators mounted on astable mounting plate.
Filter characteristics:Narrow pass band with low insertion loss, highstop band attenuation outside of the pass band.
Tuning:The band-pass filter is factory-tuned to theindicated pass band center frequency f0 with a bandwidth of f0 ±1.75 MHz. Tuning can also be effected by the customer, following theinstructions provided.
Please indicate pass band center frequency f0when ordering.
21
Band-pass Filter1800 … 2000 MHzAttenuation curves
0
5
10
15
20
25
30
35
40
45
50
-50 -40 -30 - 20 -10 f0 +10 +20 +30 +40 +50
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-50 -40 -30 -20 -10 f0 +10 +20 +30 +40 +50
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-50 -40 -30 -20 -10 f0 +10 +20 +30 +40 +50
Atte
nuat
ion/
dB
Frequency/MHz
f0 = 1800 MHz
f0 = 2000 MHz
f0 = 1900 MHz
Tuning examples:
22
Type No. 791 594 791 3972-cavity band-stop filter 2-cavity band-stop filter
Band-stop Filter1550 … 1700 / 1700 … 1900 MHz
Technical Data
The band-stop filter is used when individualfrequencies are to be attenuated.Due to its easy tuning it is particularly suitable forlaboratory test purposes.
It can be used:– to attenuate interfering signals,– to increase the isolation between a transmitter
and a receiver,– to suppress intermodulation products.
Design and construction:The band-pass filter consists of two λ/4 coaxialresonators mounted on a stable mounting plate.
Filter characteristics:Narrow stop band with high stop bandattenuation, low insertion loss outside of the stop band.
Tuning:The band-stop filter is factory-tuned to theindicated stop band frequency. Tuning can alsobe effected on site following the instructionsprovided. Since both resonators can be tunedindependently, two separate interfering signalscan be attentuated or one interfering signal canbe suppressed with very high attentuation.
Please indicate stop band frequency f0 and stopband bandwidth when ordering.
Frequency range 1550 … 1700 MHz 1700 … 1900 MHzTuning examples Tuning examples
f0 = 1550 MHz f0 = 1625 MHz f0 = 1700 MHz f0 = 1700 MHz f0 = 1800 MHz f0 = 1900 MHzStop band attenuation
when tuning to a stop bandbandwidth of:
f0 ± 0.5 MHz > 24 dB > 28 dB > 30 dB > 22 dB > 25 dB > 33 dBf0 ± 0.2 MHz > 33 dB > 37 dB > 39 dB > 31 dB > 36 dB > 45 dBf0 ± 0.1 MHz > 37 dB > 40 dB > 45 dB > 34 dB > 40 dB > 50 dB
Impedance 50 ΩInput power < 15 W (at insertion loss of < 0.5 dB)Temperature range 0 … +50 °CConnectors N female, silver-platedMaterial Mounting plate: aluminum; Band-stop filter: brass, silver-platedColour Grey (RAL 7032)Installation With 4 screws (max. 4 mm dia.)Weight 0.8 kgPacking size Approx. 160 x 90 x 210 mmDimensions (w x h x d) 130 x 72 x 170 mm (incl. mounting plate)
791 397
23
Band-stop Filter1550 … 1700 / 1700 … 1900 MHzAttenuation curves
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10
Atte
nuat
ion/
dB
Frequency/MHz
0
5
10
15
20
25
30
35
40
45
50
-10 -8 -6 -4 -2 f0 +2 +4 +6 +8 +10A
ttenu
atio
n/dB
Frequency/MHz
791 594 791 397f0 = 1550 MHz f0 = 1700 MHz
f0 = 1625 MHz f0 = 1800 MHz
f0 = 1700 MHz f0 = 1900 MHz
Tuning examples:
24
Duplexers
25
26
Pass band rangeLow band 890.0 – 915.0 MHz 876.0 – 880.0 MHzHigh band 935.0 – 960.0 MHz 921.0 – 925.0 MHz
Insertion lossAntenna → Low band < 0.9 dB (890.0 – 915.0 MHz) < 0.6 dB (876.0 – 880.0 MHz)High band → Antenna < 0.9 dB (935.0 – 960.0 MHz) < 0.6 dB (921.0 – 925.0 MHz)
IsolationLow band ↔ High band > 65 dB (890.0 – 915.0 MHz) > 70 dB (876.0 – 880.0 MHz)
> 65 dB (935.0 – 960.0 MHz) > 70 dB (921.0 – 925.0 MHz)VSWR
Antenna < 1.3 (890.0 – 915.0 MHz) < 1.3 (876.0 – 880.0 MHz)High band < 1.3 (935.0 – 960.0 MHz) < 1.3 (921.0 – 925.0 MHz)
Impedance 50 ΩInput power < 50 W (low band or high band)Temperature range -10 … +55 °CConnectors N female, silver-platedMaterial Band-pass filters: brass, silver-platedInstallation With 3 screws (max. 3 mm dia.)Weight 1.5 kgPacking size 170 x 100 x 240 mmDimensions (w x h x d) 160 x 62 x 209 mm
(incl. connectors and mounting feet)
Type No. 790 386 791 744
Duplexer, 50 W890 – 915 / 935 – 960 MHz876 – 880 / 921 – 925 MHz
Technical Data
The duplexer is suited to combine one orseveral transmitters with one or severalreceivers to a common antenna. It can also beused to combine transmitters to a commontransmitting antenna.
Design and construction:The duplexer consists of a 6-cavity band-passfilter for the low band and a 6-cavity band-passfilter for the high band. The two band-passfilters are interconnected to a common antennaoutput by means of a starpoint cable.The band-pass filters are designed to allow the transmitters to be operated either in the low band or in the high band.
790 386
27
Duplexer, 50 W890 – 915 / 935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
875 885 895 905 915 925 935 945 955 965 975
Att
en
ua
tion
/dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
877.5 882.5 887.5 892.5 897.5 902.5 907.5 912.5 917.5 922.5 927.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Atte
nuat
ion/
dB
Frequency/MHz
790 386
Diagram II (Antenna → Low band):
Diagram I:
Diagram III (High band →Antenna):
Detail seediagram II
Detail seediagram III
28
Version Indoor Outdoor, with weather protective housing (IP 54)
Pass band rangeLow band 890.0 – 915.0 MHz 890.0 – 915.0 MHzHigh band 935.0 – 960.0 MHz 935.0 – 960.0 MHz
Insertion lossAntenna → Low band < 0.5 dB (890.0 – 915.0 MHz) < 0.5 dB (890.0 – 915.0 MHz)High band → Antenna < 0.5 dB (935.0 – 960.0 MHz) < 0.5 dB (935.0 – 960.0 MHz)
IsolationLow band ↔ High band > 70 dB (890.0 – 915.0 MHz) > 70 dB (890.0 – 915.0 MHz)
> 70 dB (935.0 – 960.0 MHz) > 70 dB (935.0 – 960.0 MHz)VSWR (all ports) < 1.3 (890.0 – 915.0 MHz / 935.0 – 960.0 MHz) < 1.3 (890.0 – 915.0 MHz /
935.0 – 960.0 MHz)Impedance 50 Ω 50 ΩInput power < 250 W (low band or high band) < 250 W (low band or high band)IM products Typically -150 dBc Typically -150 dBc
(3rd order; with 2 x 20 W) (3rd order; with 2 x 20 W)Temperature range -20 … +55 °C -20 … +55 °CConnectors
Low band 7-16 female, silver-plated N female, silver-plated 7-16 female, silver-platedHigh band, antenna 7-16 female, silver-plated 7-16 female, silver-plated 7-16 female, silver-plated
Material Brass, silver-plated Duplexer: brass, silver-platedWeather protective housing:
stainless steelInstallation With 4 screws (max. 4 mm dia.) Wall mounting
with 4 screws (max. 8 mm dia.)Mast mounting
with clamp set 734 360...734 364Weight 2.8 kg 6.4 kgPacking size 310 x 120 x 260 mm 420 x 310 x 140 mmDimensions (w x h x d) 270 x 80 x 213.5 mm 310 x 309 x 136
(incl. connectors) (incl. mounting brackets)
Type No. 792 104 792 105 792 242
Duplexer, 250 W890 – 915 / 935 – 960 MHz
Technical Data
The duplexer is suited to combine one orseveral transmitters with one or severalreceivers to a common antenna. It can also beused to combine transmitters to a commontransmitting antenna.
Design and construction:The duplexer consists of a 6-cavity band-passfilter for the low band and a 6-cavity band-passfilter for the high band. The two band-passfilters are connected together internally to acommon antenna output.The band-pass filters are designed to allow the transmitters to be operated either in the low band or in the high band.
792 104
792 242
29
Duplexer, 250 W890 – 915 / 935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
875 885 895 905 915 925 935 945 955 965 975
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
877.5 882.5 887.5 892.5 897.5 902.5 907.5 912.5 917.5 922.5 927.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Att
enua
tion/
dB
Frequency/MHz
Diagram II (Antenna → Low band):
Diagram I:
Diagram III (High band → Antenna):
Detail seediagram II
Detail seediagram III
30
Pass band rangeLow band 890.0 – 915.0 MHzHigh band 935.0 – 960.0 MHz
Insertion lossAntenna → Low band < 0.9 dB (890.0 – 915.0 MHz)High band → Antenna < 0.4 dB (935.0 – 960.0 MHz)
IsolationLow band ↔ High band > 65 dB (890.0 – 915.0 MHz)
> 65 dB (935.0 – 960.0 MHz)VSWR
Antenna < 1.3 (890.0 – 915.0 MHz)High band < 1.3 (935.0 – 960.0 MHz)
Impedance 50 ΩInput power Low band: < 50 W / High band: < 500 WTemperature range -10 … +55 °CConnectors Low band: N female, silver-plated
High band, antenna: 7-16 female, silver-platedMaterial Band-pass filters: brass, silver-platedInstallation With 4 screws (max. 5 mm dia.)Weight 6.8 kgPacking size Approx. 380 x 200 x 415 mmDimensions (w x h x d) 265 x 150 x 404 mm
(incl. connectors and mounting feet)
Type No. 790 536
Duplexer, 500 W890 – 915 / 935 – 960 MHz
Technical Data
The duplexer is suited to combine one orseveral transmitters with one or severalreceivers to a common antenna. It can also beused to combine transmitters to a commontransmitting antenna.
Design and construction:The duplexer consists of a 6-cavity band-passfilter for the low band and a 6-cavity band-passfilter for the high band. The two band-passfilters are interconnected to a common antennaoutput by means of a starpoint cable.
31
Duplexer, 500 W890 – 915 / 935 – 960 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
875 885 895 905 915 925 935 945 955 965 975
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
877.5 882.5 887.5 892.5 897.5 902.5 907.5 912.5 917.5 922.5 927.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
922.5 927.5 932.5 937.5 942.5 947.5 952.5 957.5 962.5 967.5 972.5
Atte
nuat
ion/
dB
Frequency/MHz
Diagram II (Antenna → Low band):
Diagram I:
Diagram III (High band → Antenna):
Detail seediagram II
Detail seediagram III
32
Pass band rangeLow band 1710 – 1785 MHzHigh band 1805 – 1880 MHz
Insertion lossAntenna → Low band < 0.7 dB (1710 – 1785 MHz)High band → Antenna < 0.7 dB (1805 – 1880 MHz)
IsolationLow band ↔ High band > 55 dB (1710 – 1785 MHz)
> 55 dB (1805 – 1880 MHz)VSWR (all ports) < 1.3 (1710 – 1785 / 1805 – 1880 MHz)Impedance 50 ΩInput power < 100 W (low band or high band)IM products Typically -150 dBc (3rd order; with 2 x 20 W)Temperature range -20 … +55 °CConnectors 7-16 female, silver-platedMaterial Brass, silver-platedInstallation With 4 screws (max. 4 mm dia.)Weight 1.9 kgPacking size 277 x 114 x 307 mmDimensions (w x h x d) 229 x 54 x 220 mm
(incl. connectors and mounting feet)
Type No. 792 541
Duplexer1710 – 1785 / 1805 – 1880 MHz
Technical Data
The duplexer is suited to combine one orseveral transmitters with one or severalreceivers to a common antenna. It can also beused to combine transmitters to a commontransmitting antenna.
Design and construction:The duplexer consists of an 8-cavity band-passfilter for the low band and an 8-cavity band-passfilter for the high band. The two band-pass filtersare connected together internally to a commonantenna output.The band-pass filters are designed to allow the transmitters to be operated either in the low band or in the high band.
33
Duplexer1710 – 1785 / 1805 – 1880 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
1695 1715 1735 1755 1775 1795 1815 1835 1855 1875 1895
Atte
ntua
tion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1697.5 1707.5 1717.5 1727.5 1737.5 1747.5 1757.5 1767.5 1777.5 1787.5 1797.5
Atte
ntua
tion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1792.5 1802.5 1812.5 1822.5 1832.5 1842.5 1852.5 1862.5 1872.5 1882.5 1892.5
Atte
ntua
tion/
dB
Frequency/MHz
Detail seediagram II
Detail seediagram III
Diagram II (Antenna → Low band):
Diagram I:
Diagram III (High band → Antenna):
34
Pass band rangeLow band 1710 – 1785 MHzHigh band 1805 – 1880 MHz
Insertion lossAntenna → Low band < 1.0 dB (1710 – 1785 MHz)High band → Antenna < 1.0 dB (1805 – 1880 MHz)
IsolationLow band ↔ High band > 75 dB (1710 – 1785 MHz)
> 75 dB (1805 – 1880 MHz)VSWR (all ports) < 1.3 (1710 – 1785 / 1805 – 1880 MHz)Impedance 50 ΩInput power < 100 W (low band or high band)IM products Typically -150 dBc (3rd order; with 2 x 20 W)Temperature range -20 … +55 °CConnectors 7-16 female, silver-platedMaterial Brass, silver-platedInstallation With 4 screws (max. 4 mm dia.)Weight 2.1 kgPacking size Approx. 250 x 60 x 280 mmDimensions (w x h x d) 229 x 54 x 269 mm
(incl. connectors and mounting feet)
Type No. 792 481
Duplexer1710 – 1785 / 1805 – 1880 MHz
Technical Data
The duplexer is suited to combine one orseveral transmitters with one or severalreceivers to a common antenna. It can also beused to combine transmitters to a commontransmitting antenna.
Design and construction:The duplexer consists of a 10-cavity band-passfilter for the low band and a 10-cavity band-passfilter for the high band. The two band-pass filtersare connected together internally to a commonantenna output.The band-pass filters are designed to allow the transmitters to be operated either in the low band or in the high band.
35
Duplexer1710 – 1785 / 1805 – 1880 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
1695 1715 1735 1755 1775 1795 1815 1835 1855 1875 1895
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1697.5 1707.5 1717.5 1727.5 1737.5 1747.5 1757.5 1767.5 1777.5 1787.5 1797.5
Atte
nuat
ion/
dB
Frequency/MHz
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1792.5 1802.5 1812.5 1822.5 1832.5 1842.5 1852.5 1862.5 1872.5 1882.5 1892.5
Atte
nuat
ion/
dB
Frequency/MHz
Detail seediagram II
Detail seediagram III
Diagram II (Antenna → Low band):
Diagram I:
Diagram III (High band → Antenna):
36
Transmitter Combiners andMultiband Combiners
37
38
Insertion loss at f0Tx → Antenna, channelspacing: 475 / 600 kHz < 2.3 / 2.1 dB < 2.8 / < 2.6 dB < 3.2 / < 3.0 dB
Type No. 724 704
Filter Transmitter Combiner935 … 960 MHz
Technical Data
The 4-channel transmitter combiner allows up to 4 trans-mitters to be combined to a common antenna output.
Special features:– narrow channel spacing between Tx frequencies possible,– low insertion loss, even when expanded to more than four
inputs,– high isolation between Tx inputs,– high filter selectivity at Rx frequencies.
Design and construction:The 4-channel transmitter combiner consists of four 1-cavityband-pass filters of high Q and very good temperaturestability in ceramic technology, combined in one compactunit. To enhance the isolation between the Tx inputs, thetransmitter combiners can be supplied with additionalisolators on request.
Expansion to more than 4 channels:Using suitable starpoint cables several 4-channel transmitter combiners can be interconnected to form an 8-channel, 12-channel or 16-channel transmittercombiner.
Tuning:Easy tuning via self-locking tuning screws.
Number of inputs 4Frequency range 935.0 … 960.0 MHzChannel spacing > 475 kHzInsertion loss at f0
Tx → Antenna, channelspacing: 475 / 600 kHz < 1.8 / < 1.6 dB
IsolationTx ↔ Tx > 10 dB
VSWR at f0Tx Inputs < 1.3
Impedance 50 ΩInput power < 50 W each inputTemperature range 0 … +50 °CConnectors N female, silver-platedMaterial Resonators: ceramic; housing: silver-platedWeight Approx. 5.2 kgPacking size 310 x 200 x 310Dimensions (w x h x d) 250 x 225 x max. 142 mm
(incl. connectors and mounting feet)
Expansion to … 8-channel 12-channel 16-channeltransmitter combiner transmitter combiner transmitter combiner
BP BP BPBP
BP = Band-pass filter
Antenna
39
Insertion loss at f0Tx → Antenna < 2.2 dB < 2.4 dB < 2.6 dB < 2.8 dB < 3.0 dB
Type No. 792 127
Autotune Transmitter Combiner935 … 960 MHz
Technical Data
The 2-channel transmitter combiner allows 2 transmitters to be combined to acommon antenna output.
Special features:– automatic frequency tuning,– narrow channel spacing between Tx frequencies possible,– low insertion loss, even after expansion to more than four inputs,– high isolation between Tx inputs,– high filter selectivity at Rx frequencies.
Construction:– 2 x 1-cavity band-pass filter, combined to one compact unit,– 2 x dual circulators, terminated with absorbers,– 2 x stepper motors for automatic tuning of the two 1-cavity band-pass filters,– 2 x control boards for the two stepper motors.
Expansion to more than 2 channels:Several 2-channel transmitter combiners can be combined by means ofsuitable interconnecting cables to form a 4- to 16-channel transmitter combiner.
Tuning:If channel and/or frequency information signals are present, the 2-channeltransmitter combiner automatically tunes itself to the desired frequencies.
Number of inputs 2Frequency range 935.0 … 960.0 MHzChannel spacing > 600 kHzInsertion loss at f0
Tx → Antenna < 1.6 dB0.5-dB bandwidth > 200 KHzStop band attenuation
Tx→ Antenna890 – 915 MHz > 35 dB
IsolationTx ↔ Tx > 60 dB
VSWR at f0Tx inputs < 1.2Antenna output < 2.0
Impedance 50 ΩInput power < 50 W each inputTuning dynamics > 40 dBTuning time < 5 sPower supply + 12 V DC ± 5 %Temperature range 0 … +55 °CConnectors
Tx inputs N female, silver-platedAntenna, termination 4.1-9.5 female, silver-platedData interface Sub-D, 9-pin
Material Resonators: ceramic; housing: silver-platedWeight 6.4 kgPacking size 205 x 520 x 315 mmDimensions (w x h x d) 108 x 423 x 195 mm (incl. connectors)
Expansion to … 4-channel 6-channel 8-channel 10-channel 12-channelTx combiner Tx combiner Tx combiner Tx combiner Tx combiner
BP BP
BP = Band-pass filterM = Stepper motor
Controlboards
Data interface andsupply voltage
Tx 1 Tx 2
OutputAntenna
Phase termination port or input for cascading further
combiners
40
Number of inputs 2 4Frequency range 925 – 960 MHzFrequency spacing 0 kHzInsertion loss < 3.9 dB < 7.2 dBIsolation > 70 dBVSWR
Tx inputs < 1.2Antenna output < 1.4
Impedance 50 ΩInput power < 40 W each inputTemperature range -20 … +50 °CConnectors N femaleMaterial Housing: aluminiumWeight Approx. 0.8 kg Approx. 1.8 kgPacking size Approx. Approx.
107 x 95 x 215 mm 211 x 98 x 326 mmDimensions (w x h x d) 86 x 60 x 183 mm 172 x 60 x 262 mm
(incl. connectors) (incl. connectors)
Type No. 791 600 792 078
Hybrid Transmitter Combiner925 – 960 MHz
Technical Data
The hybrid transmitter combiner allows two to four trans-mitters to be combined to a common antenna output.
Special features:– very narrow spacing of the transmitting frequencies,
down to adjacent channel spacing (3 dB/6 dB loss dueto design principle),
– very high isolation between Tx inputs due to built-incirculators,
– easy frequency changing as no tuning is required,– low space requirement due to compact design.
Design and construction:The hybrid transmitter combiner uses hybrid ring junc-tions to combine the transmitters. Each transmitting pathincorporates a wide-band dual circulator with integratedabsorbers. The absorbers are dimensioned for a totalreflection possibly occurring at the output. The dissipa-tion power is fed to the surroundings via the ribbedhousing.
Customized versions:– with a single circulator instead of dual circulator, if
lower isolation between the Tx inputs is sufficient,– with a band-pass filter at the output,– with power monitoring feature,– for higher power.
791 600
HR
HR
HR HR
Tx 1
Tx 1 Tx 2 Tx 3 Tx 4
Tx 2
Antenna
Antenna
791 600
792 078
HR = Hybrid ring junction
41
Type No. 791 962 792 079
Hybrid Transmitter Combiner1805 – 1880 MHz
Technical Data
Number of inputs 2 4Frequency spacing 0 kHzFrequency range 1805 – 1880 MHzInsertion loss < 3.8 dB < 7.2 dBIsolation > 50 dBVSWR
Tx inputs < 1.2Antenna output < 1.4
Impedance 50 ΩInput power < 40 W each inputTemperature range -20 … +50 °CConnectors SMA femaleMaterial Housing: aluminiumWeight Approx. 0.8 kg Approx. 1.8 kgPacking size Approx. Approx.
107 x 95 x 202 mm 211 x 98 x 314 mmDimensions (w x h x d) 86 x 60 x 165 mm 172 x 60 x 244 mm
(incl. connectors) (incl. connectors)
The hybrid transmitter combiner allows two to fourtransmitters to be combined to a common antennaoutput.
Special versions:– very narrow spacing of the transmitting
frequencies, down to adjacent channel spacing (3 dB/6 dB loss due to design principle),
– very high isolation between Tx inputs due to built-in circulators,
– easy frequency changing as no tuning is required,– low space requirement due to compact design.
Design and construction:The hybrid transmitter combiner uses hybrid ringjunctions to combine the transmitters. Each trans-mitting path includes a wide-band circulator with integrated absorbers. The absorbers aredimensioned for a possible total reflection occurringat the output. The dissipation power is fed to thesurroundings via the ribbed housing.
Customized version:– with a dual circulator instead of single circulator,
to enhance isolation between the Tx inputs,– with a band-pass filter at the output,– with power monitoring feature,– for higher power.
791 962(Original with SMA-connectors)
HR
HR
HR HR
Tx 1
Tx 1 Tx 2 Tx 3 Tx 4
Tx 2
Antenna
Antenna
791 962
792 079
HR = Hybrid ring junction
42
Multiband Combiner68 – 470 / 870 – 970 MHz
Type No. 728 954 791 463 722 437 722 440
Frequency rangeInput 1 68 – 470 MHz 68 – 470 MHzInput 2 870 – 970 MHz 870 – 970 MHz
Insertion loss68 – 470 MHz < 0.5 dB < 0.5 dB
870 – 970 MHz < 0.5 dB < 0.5 dBIsolation > 45 dB > 38 dBVSWR < 1.2 < 1.5Impedance 50 Ω 50 ΩInput power
68 – 470 MHz < 50 W < 500 W870 – 970 MHz < 50 W < 300 W
Temperature range -20 … +50 °C -20 … +50 °CConnectors N female 7-16 female
Technical Data
The multiband combiners can be used:– to combine several transmitters and receivers
in two different frequency bands to a commonfeeder cable, to a broad-band antenna, or to abroad-band radiating cable,
– and, in the reverse operating mode, to separateseveral transmission or receiving frequenciesinto two frequency bands.
Design and construction:The multiband combiners 722 437 and 722 440consists of a coaxial low-pass filter and a 3-cavityband-pass filter with λ/4 resonators.The multiband combiners 728 954 and 791 463consist of a low-pass and high-pass filter in printedcircuit technology.
Weather protective case Without With Without WithMaterial Case: aluminium Weather protective case: Brass, silver-plated Weather protective case:
aluminium stainless steelInstallation With 4 screws To tubular masts, With 4 screws With 4 screws
(max. 3 mm dia.) 60 ... 320 mm dia., by (max. 4 mm dia.) (max. 12 mm dia.)means of a supplied
non-corrosive clamp strapWeight 1.3 kg 3 kg 3 kg 20 kgPacking size Approx. Approx. Approx. Approx.
280 x 55 x 125 mm 540 x 120 x 260 mm 145 x 145 x 625 mm 970 x 240 x 410 mmDimensions (w x h x d) 269 x 32 x 112 mm 400 x 60 x 172 mm 120 x 76 x 520 mm 793 x 218 x 380 mm
(incl. connectors) (incl. connectors) (incl. connectors) (incl. connectors)
728 954
722 437
43
Multiband Combiner68 – 470 / 870 – 970 / 1600 – 2000 MHz
Antenna
Feeder cable
Combiner 791 145
Combiner 728 954
Combiner 721 138
1600 – 2000 MHz
870 – 970 MHz
400 – 470 MHz68 – 176 MHz
Antenna 400 – 470 MHz
Antenna 890 – 960 MHz
890 – 960 MHz400 – 470 MHz
Feeder cable
Combiner 722 440(with weather protective
case)
Combiner 722 437
Cascaded multiband combiners
Example for the combining of 400 MHz and 900 MHz transmitters/receivers to a common feeder cable
44
Type No. 791 145
Multiband Combiner50 – 1000 / 1600 – 2000 MHz
Technical Data
It can be used:– to combine several transmitters and receivers
in two different frequency bands to a commonfeeder cable, to a broad-band antenna, or to abroad-band radiating cable,
– and, in the reverse operating mode, to separateseveral transmitting or receiving frequencies intotwo frequency ranges.
Design and construction:The multiband combiner consists of a low-passand high-pass filter in printed circuit technology.
Frequency rangeInput 1 50 – 1000 MHzInput 2 1600 – 2000 MHz
Insertion lossInput 1 ↔ Antenna < 0.3 dB (50 – 1000 MHz)Input 2 ↔ Antenna < 0.5 dB (1600 – 2000 MHz)
IsolationInput 1 ↔ Input 2 > 40 dB (50 – 1000 / 1600 – 2000 MHz)
VSWR < 1.2 (50 – 1000 / 1600 – 2000 MHz)Impedance 50 ΩInput power
Input 1 < 100 WInput 2 < 50 W
Temperature range -30 … +60 °CConnectors N femaleMaterial Housing: aluminiumWeight 0.7 kgPacking size 220 x 40 x 140 mmDimensions (w x h x d) 201 x 23 x 112 mm (incl. connectors)
45
Multiband Combiner50 – 1000 / 1600 – 2000 MHzTypical attenuation curves
0
10
20
30
40
50
60
70
80
90
100
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Atte
nuat
ion/
dB
Frequency/MHz
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Atte
nuat
ion/
dB
Frequency/MHz
x: Input 1 ↔ Antennay: Input 2 ↔ Antenna
Diagram I:
Diagram II:
Detail seediagram II
Detail seediagram II
x y
xy
46
System Components
47
48
Type No. K 63 70 61 K 63 70 67
3-dB Coupler (90° Hybrid)806 – 960 MHz
Connectors N female, 7-16 female,silver-plated silver-plated
Frequency range 806 – 960 MHzAttenuation 1 ↔ 2 / 1 ↔ 3 3 ± 0.4 dBAttenuation 2 ↔ 3 See diagramDirectivity > 30 dBVSWR < 1.1Impedance 50 ΩInput power < 500 W total power at two inputs,
with max. 350 W at one inputMaterial Brass, silver-platedColour Grey (RAL 7032)Installation With 2 screws (max. 5 mm dia.)Weight 0.6 kgPacking size 170 x 80 x 105 mm Dimensions (w x h x d) 157 x 55 x 95 mm 157 x 55 x 84 mm
(incl. connectors) (incl. connectors)
Technical Data
K 63 70 67
The 3-dB coupler can be used:– as a decoupled power splitter with a ratio
of 1:1,– for the decoupled combining of two trans-
mitters with frequency spacing as narrow asdesired (at 3 dB loss),
– for the decoupled combining of two receiverswith frequency spacing as narrow as desired,
– for the decoupled combining of two trans-mitter/receiver units, whose integratedduplexers are within the same frequencyrange,
– as a frequency-independent 90° phase shifter,– as a component to form combiners.
Function:The 3-dB coupler has four ports, two of which are decoupled from each other. For exampleeffective power entering into port 1 is distributedinto ports 2 and 3. Port 4 is decoupled andwithout power if ports 2 and 3 are ideallymatched. In practice an absorber of suitablepower at port 4 is to be planned in accordancewith the mismatch of ports 2 and 3. Decoupled combining can be achieved via thediagonally opposite ports 2 and 3 or 1 and 4.
Customized versions:On request couplers with a coupling attenuationof between 3 dB and 10 dB are available.
2.5
3.0
3.5
Frequency/MHz
1 ↔ 2
1 ↔ 3
806 960
Typical attenuation 1 ↔ 2 and 1 ↔ 3vs frequency
Atte
nuat
ion
1 ↔
3 /
dB
Atte
nuat
ion
1 ↔
2 /
dB
1 3
2 4
1.0 1.5 2.0
15
20
25
Atte
nuat
ion
2 ↔
3 /
dB
VSWR at port 1(with 50-Ω load at port 4)
Attenuation 2 ↔ 3 vs VSWR at port 1
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
49
Connectors N female, 7-16 female,silver-plated silver-plated
Frequency range 806 – 960 MHzAttenuation
Input 1 ↔ Antenna port 3 ± 0.4 dBInput 2 ↔ Antenna port 3 ± 0.4 dB
AttenuationInput 1 ↔ Input 2 See diagram
VSWR (inputs) < 1.1Impedance 50 ΩInput power < 240 W total per input
at max. 20 transmitter signals at each inputTemperature range 0 … +50 °CMaterial 3-dB coupler: brass, silver-plated
Mounting plate: aluminiumCable: RG 142 B/U
Colour Grey (RAL 7032)Installation Installation in 7-R-rack with 4 screws (M6) or
wall mounting using 4 spacing pieces of 60 mm orwall mounting using mounting kit 791 660
Weight 6.7 kgPacking size 405 x 425 x 250 mmDimensions (w x h x d) 350 x 370 x 233 mm
3-dB Coupler with Cable Absorber806 – 960 MHz
The 3-dB coupler with cable absorber is suitable for combining 2 transmitters or 2 transmitter groups (transmitter combiners) to one commonantenna while achieving very low intermodulation.The frequency spacing between the transmittingfrequencies can be as narrow as required. Fortechnical reasons half the signal power (3 dB) isdissipated by the cable absorber.
Design and construction:The 3-dB coupler with cable absorber consists of a 3-dB coupler and a 10-W load with an inserted 20-dB attenuation cable.
Function:The insertion of a 20-dB attenuation cable causesthe transmission signals to be highly attenuatedbefore they reach the load. Thus only intermodu-lation products of a very low level can be generatedat the load, which are further reduced by 20 dB in the attenuation cable on the return path to theantenna output.
Type No. 729 646 729 745
Technical Data
729 646
3-dB coupler
50-Ω load
Attenuation cable
Input 2 Transmitter combiner 2
OutputAntenna
Input 1 Transmitter combiner 1
1.0 1.5 2.0
15
20
25
Atte
nuat
ion
inpu
t 1 ↔
inpu
t 2 /
dB
VSWR of the antenna
Attenuation input 1 ↔ input 2vs VSWR at antenna port
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
50
Type No. K 63 73 61 K 63 73 62 1 790 881
Hybrid Ring Junction (180° Hybrid)806 – 960 MHz
Technical Data
4
3
1
2
λ/4 λ/4
3/4λ λ/4
Frequency range 806 – 960 MHz 806 – 960 MHz 890 – 960 MHzAttenuation 1 ↔ 2 or 1 ↔ 4 3 ± 0.4 dB 3 ± 0.4 dB 3 ± 0.3 dBAttenuation 1 ↔ 3 or 2 ↔ 4 See diagramVSWR < 1.3 < 1.2 < 1.2Impedance 50 ΩInput power < 100 W each inputConnectors N femaleMaterial Housing: aluminiumInstallation With 2 screws (max. 4 mm dia.)Weight 250 g Approx. 350 g Approx. 350 gPacking size Approx. 160 x 40 x 105 mmDimensions (w x h x d) 70 x 30 x 109 mm 150 x 30 x 87 mm 150 x 30 x 87mm
(incl. connectors) (incl. connectors) (incl. connectors)
K 63 73 61
K 63 73 621790 881
3
12
34
2
41
The hybrid ring junction can be used:– as a decoupled power splitter with a ratio
of 1:1,– for the decoupled combining of two transmitters
with frequency spacing as narrow as desired (at 3 dB loss),
– for the decoupled combining of two receiverswith frequency spacing as narrow as desired,
– for the decoupled combining of two transmitter/receiver units whose integrated duplexers arewithin the same frequency range,
– as component to form combiners.
Function:The Hybrid Ring Junction has four ports, two of which are decoupled from each other. Forexample effective power entering into port 1 isdistributed into ports 2 and 4. Port 3 is decoupledand without power if ports 2 and 4 are ideallymatched. In practice an absorber of suitablepower at port 3 is to be planned in accordancewith the mismatch of ports 2 and 4.Decoupled combining can be achieved via ports 1 and 3 or 2 and 4.
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
51
Hybrid Ring Junction (180° Hybrid)806 – 960 MHzTypical attenuation curves
K 63 73 621K 63 73 61 790 881
K 63 73 621K 63 73 61
790 881
2.5
3.0
3.5
Frequency/MHz
1 ↔ 4
1 ↔ 2
806 960
Typical attenuation 1 ↔ 2 and 1 ↔ 4vs frequency
Atte
nuat
ion
1 ↔
4 /
dB
Atte
nuat
ion
1 ↔
2 /
dB
2.5
3.0
3.5
Frequency/MHz
1 ↔ 4
1 ↔ 2
890 960
Typical attentuation 1 ↔ 2 and 1 ↔ 4vs frequency
Atte
ntua
tion
1 ↔
4 /
dB
Atte
ntua
tion
1 ↔
2 /
dB
20
Atte
nuat
ion
2 ↔
4 /
dB
Atte
nuat
ion
1 ↔
3 /
dB
30
40
Attenuation 1 ↔ 3 or 2 ↔ 4 vs frequency
Frequency/MHz960940900860820
typical attenuationguaranteed attenuation
806
20
Atte
nuat
ion
2 ↔
4 /
dB
Atte
nuat
ion
1 ↔
3 /
dB
30
40
Attenuation 1 ↔ 3 or 2 ↔ 4 vs frequency
Frequency/MHz960950930910890
typical attenuationguaranteed attenuation
52
Power splitting ratio 1 : 3 1 : 4Frequency range 806 – 960 MHzPower dividing loss
(incl. insertion loss) < 5.5 dB < 6.5 dBIsolation > 25 dBVSWR < 1.2Impedance 50 ΩInput power < 100 Watt each inputConnectors N femaleMaterial Housing: aluminiumMontage With 2 screws (max. 4 mm dia.)Weight 0.5 kg 0.7 kgPacking size 175 x 95 x 140 mmDimensions (w x h x d) 74 x 68 x 140 mm 114 x 68 x 140 mm
(incl. connectors) (incl. connectors)
Decoupled Power Splitter806 – 960 MHz
The decoupled power splitter can be used:– for power distribution, e.g. from one common
antenna to several receivers with frequencyspacing as narrow as desired,
– for power distribution, for example: from onetransmitter to several outputs,
– for decoupled combining of several transmitterswith frequency spacing as narrow as desired (at 4.7 dB or 6 dB loss),
– for decoupled combining of several transmitting/receiving units, whose integrated duplexers arewithin the same frequency range.
Function :The decoupled 3:1 power splitter has 3 inputs, oneoutput,and 3 absorber ports. The decoupled 4:1power splitter has 4 inputs, one output, and 4absorber ports.The inputs are only decoupled if theabsorber ports are terminated with 50 Ω loads ofsuitable power.
Dimensioning the absorber:The absorbers of the 3:1 power splitter must bedimensioned so that at least 2/3 of the power fedinto the inputs can be absorbed.Example: If a power of 50 W is fed into every input,then the absorbers must be able to absorb 33 Weach.
The absorbers of the 4:1 power splitter must bedimensioned so that at least 3/4 of the power fedinto the inputs can be absorbed.Example: If a power of 50 W is fed into every input,then the absorbers must be able to absorb 37 Weach.
Type No. 728 044 729 8121:3 power splitter 1:4 power splitter
Technical Data
729 812
E1 E2 E3 E4
A1 A2 A3 A4
Connectors E1 … E4: inputs, decoupledConnectors A1 … A4: external 50-Ω absorbers
1:4 power splitter 729 812
Output(Antenna)
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
53
Power splitting ratio 4:4Frequency range 890 – 960 MHzPower dividing loss
(incl. insertion loss) < 6.5 dBIsolation > 25 dBVSWR < 1.3Impedance 50 ΩInput power < 200 W each inputConnectors 7-16 femaleMaterial Weather protective housing: aluminiumInstallation To tubular masts, 60 ... 320 mm dia., by means
of a supplied non-corrosive clamp strapWeight Approx. 3 kgPacking size Approx. 225 x 305 x 175 mmDimensions (w x h x d) 160 x 210 x 160 mm
4:4 Power Splitter890 – 960 MHz
The 4:4 power splitter allows decoupled combiningof 4 transmitters whose frequency spacing can beas narrow as desired and simultaneous distribution to 4 outputs.
Function:The 4:4 power splitter has 4 inputs and 4 outputs.Effective power entering into, for example, port 1 is distributed equally to the 4 outputs. The inputsare only decoupled if the outputs are terminated atthe correct impedance with antennas or with loadsof suitable power.
Dimensioning of the absorbers:If the outputs are terminated by absorbers, theabsorbers must be dimensioned so that each canabsorb 1/4 of the total power.
Type No. 792 069
Technical Data
Connectors E1 … E4: inputs, decoupledConnectors A1 … A4: outputs, decoupled
E1
A1 A2 A3 A4
E2 E3 E4
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
54
Frequency range 935 – 960 MHzIsolation
BNC measuring port 40 dB ± 1.5 dBTNC measuring port 35 dB ± 1.5 dB
Directivity > 30 dBVSWR
Input, output < 1.06Measuring ports < 1.2
Impedance 50 ΩInput power < 350 WConnectors
Input, output 7-16 femaleMeasuring ports 2 x BNC female, 2 x TNC female
Material Brass, silver-platedWeight Approx. 1.3 kgPacking size Approx. 125 x 55 x 285 mmDimensions (w x h x d) 92 x 41 x 220 mm
(incl. connectors)
Measuring Directional Coupler935 – 960 MHz
The measuring directional coupler samples theforward or reflected power for power monitoringpurposes.
Two pairs of measuring ports with differentcoupling attenuations are incorporated in themeasuring directional coupler, one pair formonitoring the forward power, the other pair formonitoring the reflected power.
Design and construction:The measuring directional coupler is built usingcoaxial conductor technology, consisting of one main conductor and four coupling conductorswith integrated 50-Ω loads.
Customized versions:Measuring directional couplers are also availablewith only one or two measuring ports on request.
Type No. 723 387
Technical Data
Measuring port TNCforward power (35 dB)
Measuring port BNCforward power (40 dB)
Measuring port TNCreflected power (35 dB)
Measuring port BNCreflected power (40 dB)
Output7-16
Input7-16
55
Frequency range 890 – 960 MHzInsertion loss 1 → 2 < 0.2 dB < 0.3 dBIsolation 2 → 1 > 25 dB > 50 dBVSWR 1, 2, 3 < 1.2Impedance 50 ΩInput power < 150 WTemperature range -10 … +55 °CConnectors N femaleInstallation With 2 screws (max. 3 mm dia.)Weight 360 g 645 gPacking size 110 x 100 x 40 mm 160 x 90 x 40 mmDimensions (w x h x d) 91 x 71 x 32 mm 142 x 71 x 32 mm
(incl. connectors) (incl. connectors)
Type No. 791 375 791 376
Circulator890 – 960 MHz
Technical Data
The circulator can be used:– to increase the coupling attenuation
between transmitters, to reduce inter-modulation products,
– to prevent adverse effects of unmatchedload impedance on amplifier performance.
Function:The circulator is a non-reciprocal componentwith low insertion loss in the forwarddirection (1→2) and high attenuation in thereverse direction (2→1). The impedance atthe input (1) of the circulator is constant andindependent of the impedance of thecomponents following. The reflected powerat the output (2) is passed to the absorberport (3), which must be terminated with anabsorber.
Dimensioning of the absorbers:The absorber at port (3) must be dimen-sioned to be able to absorb the maximumpower reflected at output (2).
791 376
791 375
3
2
1
3
1
2
56
Type No. 792 146 792 145
3-dB Coupler (90° Hybrid)1710 – 1900 MHz
Connectors N female, 7-16 female,silver-plated silver-plated
Frequency range 1710 – 1900 MHzAttenuation 1 ↔ 2 / 1 ↔ 3 3 ± 0.4 dBAttenuation 2 ↔ 3 See diagramDirectivity > 30 dBVSWR < 1.1Impedance 50 ΩInput power < 350 W total power at two inputs,
with max. 250 W at one inputMaterial Brass, silver-platedColour Grey (RAL 7032)Installation With 2 screws (max. 5 mm dia.)Weight 0.5 kgPacking size 120 x 110 x 120 mmDimensions (w x h x d) 111 x 55 x 95 mm 111 x 55 x 84 mm
(incl. connectors) (incl. connectors)
Technical Data
The 3-dB coupler can be used:– as a decoupled power splitter with a ratio 1:1,– for the decoupled combining of two transmitters
with frequency spacing as narrow as desired (at 3 dB loss),
– for the decoupled combining of two receivers with frequency spacing as narrow as desired,
– for the decoupled combining of two transmitter/receiver units whose integrated duplexers arewithin the same frequency range,
– as a frequency-independent 90° phase shifter,– as a component to form combiners.
Function:The 3-dB coupler has four ports, two of which aredecoupled from each other. For example effectivepower entering into port 1 is distributed into ports 2and 3. Port 4 is decoupled and without power ifports 2 and 3 are ideally matched. In practice anabsorber of suitable power at port 4 is to beplanned in accordance with the mismatch of ports 2and 3.Decoupled combining can be achieved via thediagonally opposite ports 2 and 3 or 1 and 4.
Customized versions:On request couplers with a coupling attenuation of between 3 dB and 10 dB are available.
792 145
2.5
3.0
3.5
Frequency/MHz
1 ↔ 2
1 ↔ 3
1900
Typical attenuation 1 ↔ 2 and 1 ↔ 3vs frequency
Atte
nuat
ion
1 ↔
3 /
dB
Atte
nuat
ion
1 ↔
2 /
dB
1 3
2 4
1710
1.0 1.5 2.0
15
20
25
Atte
nuat
ion
2 ↔
3 /
dB
VSWR at port 1(with 50-Ω load at port 4)
Attenuation 2 ↔ 3 vs VSWR at port 1
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
57
Frequency range 1710 – 1880 MHzAttenuation 1 ↔ 2 or 1 ↔ 4 3 ± 0.4 dBAttenuation 1 ↔ 3 or 2 ↔ 4 See diagramVSWR < 1.3Impedance 50 ΩInput power < 50 W each inputConnectors N femaleMaterial Housing: aluminiumInstallation With 4 screws (max. 3 mm dia.)Weight ca. 250 gPacking size 90 x 40 x 110 mmDimensions (w x h x d) 80 x 26 x 106 mm
(incl. connectors)
Hybrid Ring Junction (180° Hybrid)1710 – 1880 MHz
Type No. 791 498
Technical Data
4
3
1
2
λ/4 λ/4
3/4λ λ/4
The hybrid ring junction can be used:– as a decoupled power splitter with a ratio 1:1,– for the decoupled combining of two transmitters
with frequency spacing as narrow as desired (at 3 dB loss),
– for the decoupled combining of two receiverswith frequency spacing as narrow as desired,
– for the decoupled combining of two transmitter/receiver units whose integrated duplexers arewithin the same frequency range,
– as a component to form combiners.
Function:The Hybrid Ring Junction has four ports, two ofwhich are decoupled from each other. Forexample effective power entering into port 1 isdistributed into ports 2 and 4. Port 3 is decoupledand without power if ports 2 and 4 are ideallymatched. In practice an absorber of suitablepower at port 3 is to be planned in accordancewith the mismatch of ports 2 and 4.Decoupled combining can be achieved via ports 1 and 3 or 2 and 4.
20
Atte
nuat
ion
2 ↔
4 /
dB
Atte
nuat
ion
1 ↔
3 /
dB
30
40
Attenuation 1 ↔ 3 or 2 ↔ 4 vs frequency
Frequency/MHz19001850180017501700
typical attenuationguaranteed attenuation
2,5
3,0
3,5
Frequency/MHz
1 ↔ 4
1 ↔ 2
1710 1880
Typical attenuation 1 ↔ 2 and 1 ↔ 4vs frequency
Atte
nuat
ion
1 ↔
4 /
dB
Atte
nuat
ion
1 ↔
2 /
dB
1
2
3
4
Note: VSWR and attenuation are measured when the remaining ports areterminated with 50-Ω loads.
58
50-Ω Load
50-Ω loads are suitable for use as absorbers for small and medium power.
They are used:– as termination for transmitters or amplifiers used for testing, measuring or tuning,– as termination for circulators, directional couplers, hybrid ring junctions and
decoupled power splitters.
Special features:– very low VSWR within a wide frequency range,– high stability and RF shielding due to the closed aluminium construction,– arbitrary installation position because of convectional cooling,– 50 W and 100 W models can be installed on front or rear panels of electrical
equipment for heat dissipation.
Type No. K 62 26 61 1
Connector N maleFrequency range 0 – 2000 MHzVSWR 0 – 1000 MHz < 1.08VSWR1000 – 2000 MHz < 1.15Weight 40 gPacking size 90 x 60 x 25 mmDimensions 33 mm / ø 21 mm
0.5 Watt *
Type No. K 62 26 11 9 K 62 26 11 1
Connector BNC male N maleFrequency range 0 – 2000 MHzVSWR 0 – 1000 MHz < 1.08VSWR1000 – 2000 MHz < 1.15Weight 20 g 40 gPacking size 90 x 60 x 25 mmDimensions 30 mm / 33 mm /
ø 15 mm ø 21 mm
2 Watt *
Type No. K 62 26 40 1 K 62 26 41 1
Connector N female N maleFrequency range 0 – 2000 MHzVSWR 0 – 1000 MHz < 1.08VSWR1000 – 2000 MHz < 1.15Weight Approx. 250 gPacking size 50 x 90 x 100 mmDimensions (w x h x d) 40 x 82 x 77 mm 40 x 82 x 85 mm
(incl. connector) (incl. connector)
10 Watt *
K 62 26 61 1K 62 26 11 1
K 62 26 11 9
K 62 26 40 1
59
50-Ω Load
* Rated power at 40 °C ambient temperature. The max. power ratingincreases or decreases with falling or rising ambient temperature.
Type No. K 62 26 30 1 K 62 26 31 1 K 62 26 30 7 K 62 26 31 7
Connector N female N male 7-16 female 7-16 maleFrequency range 0 – 2000 MHzVSWR 0 – 1000 MHz < 1.08VSWR1000 – 2000 MHz < 1.15Weight Approx. 800 gPacking size 80 x 95 x 145 mmDimensions (w x h x d) 67 x 90 x 130 mm 67 x 90 x 138 mm 67 x 90 x 134 mm 67 x 90 x 133 mm
(incl. connector) (incl. connector) (incl. connector) (incl. connector)
50 Watt *
Type No. K 62 26 50 1 K 62 26 51 1 K 62 26 50 7
Connector N female N male 7-16 femaleFrequency range 0 – 1000 MHzVSWR 0 – 1000 MHz < 1.08Weight Approx. 2.4 kgPacking size 130 x 195 x 180 mmDimensions (w x h x d) 114 x 153 x 156 mm 114 x 161 x 156 mm 114 x 170 x 156 mm
(incl. connector) (incl. connector) (incl. connector)
100 Watt *
Type No. K 62 26 20 1 K 62 26 21 1 K 62 26 20 7 K 62 26 21 7
Connector N female N male 7-16 female 7-16 maleFrequency range 0 – 2000 MHzVSWR 0 – 1000 MHz < 1.08VSWR1000 – 2000 MHz < 1.15Weight Approx. 500 gPacking size 50 x 100 x 135 mmDimensions (w x h x d) 35 x 94 x 113 mm 35 x 94 x 121 mm 35 x 94 x 125 mm 35 x 94 x 124 mm
(incl. connector) (incl. connector) (incl. connector) (incl. connector)
25 Watt *
K 62 26 30 1
K 62 26 501
K 62 26 20 1
60
Frequency range 806 – 960 MHzAttenuation
Tx input → Tx antenna 3.0 dB ± 0.4 dBRx antenna → Rx output 3.0 dB ± 0.4 dB
Connectors 7-16 female, silver-platedVersion In weather protective On mounting plate
housing (stainless steel), (aluminium)with mounting clamps
Packing size Approx. 650 x 950 x 320 mm Approx. 620 x 320 x 680 mmDimensions (w x h x d) 550 x 750 x 300 mm 550 x 300 x 600 mm
Combiner System806 – 960 MHz
The combiner system allows a transmitting antennaand two receiving antennas each to be twice used.For instance, common antennas may be used forthe base station radio equipment of the mobile com-munication networks D1 and D2. In the transmissionpath a 3-dB coupler with cable absorber 729 745serves to combine 2 transmitters or 2 trans-mitter combiners to one common antenna, whileproviding very low intermodulation. Both the receiving antennas can be used twice dueto the 3-dB coupler K 63 70 67.
Type No. 791 568 792 002
Technical Data
792 002
Tx input 1
Tx antenna Rx antenna 1 Rx antenna 2
Tx input 2 Rx output 1 Rx output 2 Rx output 3 Rx output 4
3-dB coupler 3-dB coupler 3-dB coupler
Cable absorber
Further technical data see, 3-dB coupler with cableabsorber 729 745 on page: 49and 3-dB coupler K 63 70 67 on page: 48
Amplifiers
61
62
Number of inputs 1Number of outputs 8Frequency range 870 – 915 MHzGain 3 dB +1.5/-1.5 dBNoise figure < 3.5 dB (+0.5/-1 dB)3rd order intercept point > 16 dBm (typ. 19 dBm)Isolation > 25 dB (typ. 30 dB) between any two outputsVSWR
Input < 1.4Output < 1.4
Impedance 50 ΩPower supply 230 V +10/-15 %, 50 … 60 Hz and/or
+11 … +48 V DC, minus groundedPower consumption < 9 W (230 V, 50 Hz)
< 20 W (+11 … +48 V DC)Temperature range -20 … +50 °CConnectors N femaleColour Front panel: grey (RAL 7032)Attached hardware Power cable and 4 pin DC-connectorWeight 4.0 kgPacking size Approx. 540 x 105 x 410 mmDimensions (w x h x d) 483 x 44 x 280 mm, 19″ drawer
Type No. 780 066
Receiver Multicoupler870 – 915 MHz, 8 Outputs
Technical Data
Note: Unused outputs have to be terminated using a 50-Ω load in order tocomply with the specifications.
The use of the receiver multicoupler 780 066 isappropriate if several receivers are operatedsimultaneously at the same site. With this receivermulticoupler up to 8 receivers can be connected to one common antenna.This results in considerable savings for the antennasystem. The low noise figure and the excellent inter-modulation properties guarantee a high dynamic rangeand thereby improved receiving conditions. This is ofparticular significance in locations where transmitters are also operated next to receivers.
The receiver multicoupler consists of:– a low noise amplifier,– a power splitter,– a voltage supply.
The receiver multicoupler has an active redundancy dueto the two amplifier modules in parallel which are locatedin the low noise amplifier. This means that the receiversmulticoupler still supplies all connected receivers even ifone of the amplifier modules fails. The signal levels in thiscase decrease by approximately 6 dB.Each amplifier module is designed for operation with itsown voltage supply of 230 V AC or +11 … +48 V DC.
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Number of inputs 1Number of outputs 16Frequency range 870 – 915 MHzGain 3 dB + 1.5/-1.5 dBNoise figure < 3.5 dB (+0.5/-1 dB)3rd order intercept point > 12 dBm (typ. 16 dBm)Isolation > 25 dB (typ. 30 dB) between any two outputsVSWR
Input < 1.4Output < 1.4
Impedance 50 ΩPower supply 230 V +10/-15 %, 50 … 60 Hz and/or
+11 … +48 V DC, minus groundedPower consumption < 9 W (230 V, 50 Hz)
< 20 W (+11 … +48 V DC)Temperature range -20 … +50 °CConnectors N femaleColour Front panel: grey (RAL 7032)Attached hardware Power cable and 4 pin DC-connectorWeight 5.9 kgPacking size Approx. 540 x 115 x 460 mmDimensions (w x h x d) 483 x 88 x 280 mm, 19″ drawer
Type No. 780 250
Receiver Multicoupler870 – 915 MHz, 16 Outputs
Technical Data
Note: Unused outputs have to be terminated using a 50-Ω load in order tocomply with the specifications.
The use of the receiver multicoupler 780 250 isappropriate if several receivers are operatedsimultaneously at the same site. With this receivermulticoupler up to 16 receivers can be connected to one common antenna.This results in considerable savings for the antennasystem. The low noise figure and the excellent inter-modulation properties guarantee a high dynamic rangeand thereby improved receiving conditions. This is ofparticular significance in locations where transmitters are also operated next to receivers.
The receiver multicoupler consists of:– a low noise amplifier,– a power splitter,– a voltage supply.
The receiver multicoupler has an active redundancy dueto the two amplifier modules in parallel which are locatedin the low noise amplifier. This means that the receivermulticoupler still supplies all connected receivers even ifone of the amplifier modules fails. The signal levels in thiscase decrease by approximately 6 dB.Each amplifier module is designed for operation with itsown voltage supply of 230 V AC or +11 … +48 V DC.
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Type No. 780 164
Low Noise Amplifier890 – 915 MHz
Frequency range 890 – 915 MHz*Band-pass attenuation at
935 – 960 MHz > 60 dBGain 15 dB ± 0.5 dBNoise figure < 2.8 dB (typ. 2.0 dB)3rd order intercept point 25 dBmVSWR
Input < 1.4Output < 1.4
Power supply voltage +15 V DC ± 15 %, minus groundedPower supply current < 350 mATemperature range -20 … +55 °CConnectors 7-16 femaleMaterial Housing: aluminiumWeight Approx. 7 kgPacking size 310 x 120 x 280 mmDimensions (w x h x d) 300 x 100 x 200 mm
Technical Data
The use of the receiver amplifier 780 164 is highlyrecommended if the transmission line attenuation oflong antenna feeders reduces the quality of the recei-ved signal.The receiver amplifier is built into a weather protectivehousing and can therefore be operated close to thereceiving antenna. It can be wall or mast mounted.
The low noise amplifier consists of:– a preselector filter,– a low noise amplifier,– a DC biasing network.
The installed preselector filter prevents interferencecaused by signals outside the receiving band; forexample caused by signals of transmitters on the sameantenna site. With the two amplifier modules 1 and 2 in parallel, the receiver amplifier has an activeredundancy. This means that the receiver multicouplerstill supplies all connected receivers even if one of theamplifier modules fails. The signal levels in this casedecrease by approximately 6 dB.Additional measures against static discharge andlightning in the preselector filter and the DC biasingnetwork guarantee high reliability and operational safetyfor the receiver amplifier.
* EGSM 880 – 915 MHz on request.
Preselector filter
Amplifier modules 1, 2
DC biasing network
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Receiver Multicoupler1710 … 1785 MHz, 4 Outputs
Type No. 780 251
Technical Data
Number of inputs 1 (+ 1 test input)Number of outputs 4Frequency range 1710 ... 1785 MHzBandwidth 15 MHz*Bandpass attenuation at
1805 – 1880 MHz > 50 dBGain 8 dB ± 1.5 dBNoise figure < 2,5 dB ± 0.5 dB3rd order intercept point > 16 dBm (typ. 19 dBm)Isolation > 25 dB (typ. 30 dB) between any two outputsCoupling attentuation
of the test input 40 dB ± 1 dBVSWR
Input < 1.4Output < 1.4
Impedance 50 ΩPower supply +15 V ± 15 %, minus groundedPower consumption < 5 WTemperature range -20 … +50 °CConnectors
Input (Antenna) N femaleOutputs, test input SMA femaleDC, Alarms DIN 41612, 20 pins
Material Housing: aluminiumPacking size Approx. 410 x 105 x 540 mmDimensions (w x h x d) 170 x 42 x 350 mm
*Other bandwidth on request.Note: Unused outputs have to be terminated using a 50-Ω load in order to
comply with the specifications.
Test input
Supply / Alarm unit
Input(Antenna)
Outputs
12
34
Amplifiermodules 1, 2Preselector
filter
Low noise amplifier unit
Power divider1:4
The use of the receiver multicoupler 780 251 is appropriate ifseveral receivers are operated simultaneously at the same site.With this receiver multicoupler up to 4 receivers can be connectedto one common antenna.This results in considerable savings for the antenna system. Thelow noise figure and the excellent intermodulation propertiesguarantee a high dynamic range and thereby improve receivingconditions. This is of particular significance in locations wheretransmitters are also operated next to receivers.
The receiver multicoupler consists of:– a preselector filter,– a low noise amplifier unit,– a power splitter,– a supply and alarmunit.
With the two parallel connected amplifier modules which arelocated in the low noise amplifier, the receiver multicoupler has an active redundancy. This means that the receiver multicoupler still supplies all connected receivers even if one of the amplifiermudules fail.The signal levels in this case decreases by approximately 6 dB.Each amplifier module is designed with its own voltage supply. Two alarm outputs are available (open collector), which areactivated if one of the two modules (A 1) or both modules (A 2) fail.The alarms are also indicated on the front panel.
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Type No. 780 252
Low Noise Amplifier1710 ... 1785 MHz
Frequency range 1710 ... 1785 MHzBandwidth 15 MHz*Bandpass attenuation
at 1805 – 1880 MHz > 60 dBGain 15 dB ± 0,5 dBNoise figure < 2.8 dB (typ. 2.0 dB)3rd order intercept point 25 dBmVSWR
Input < 1.4Output < 1.4
Power supply voltage +15 V ± 15 %, minus groundedPower supply current < 300 mATemperature range -20 … +55 °CConnectors 7-16 femaleMaterial Housing: aluminiumWeight Approx. 7 kgPacking size 310 x 120 x 280 mmDimensions (w x h x d) 300 x 100 x 200 mm
Technical Data
* Other bandwidth upon request.
Preselector filter
Amplifier modules 1, 2
DC biasing network
The use of the receiver amplifier 780 252 is highlyrecommended if the transmission line attenuation of long antenna feeders reduces the quality of the receivedsignal.The receiver amplifier is built into a weather protectivehousing and can therefore be operated close to thereceiving antenna. It can be wall or mast mounted.
The low noise amplifier consists of:– a preselector filter,– a low noise amplifier,– a DC biasing network.
The installed preselector filter prevents interferencecaused by signals outside the receiving band; for examplecaused by signals of transmitters on the same antenna site. With the two amplifier modules 1 and 2 in parallel the receiver amplifier has an active redundancy. This means that the receiver multicoupler still supplies allconnected receivers even if one of the amplifier modulesfails. The signal levels in this case decrease by approxi-mately 6 dB.Additional measures against static discharge and lightningin the preselector filter and the DC biasing networkguarantee high reliability and operational safety for thereceiver amplifier.
