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Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 1 Rev 1.5
Application Board Using TA8210D + SP4T switch
- This Application board showcases our 20W PA TA8210D with our
30W SP4T TS7441L switch where we match VHF, UHF and
800/900MHz band on the individual paths of the switch. Pout is
around 41dBm for VHF and UHF and 40dBm for 800/900MHz. In this
approach, we can optimize performances like gain, efficiency and
harmonics for the individual narrow bands compared to a
broadband match.
57 x 68 mm
Note: All data below was taken with the Base Plate Temp at ~30degC.
Additional heatsinking was used to maintain this temp.
RF1 (800/900)
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 2 Rev 1.5
PA + Switch Board Operating Instructions
1. SETUP SWITCH FOR DESIRED OUTPUT PORT.
1.1. Set DIP Switch V1 and V2 positions as follows to select RF output port
V1, V2, 0, and 1 positions are marked on the PC Board
Output Port V1 V2
RF1 - 800 MHz Off (0, Left) Off (0, Left)
RF2 - UHF On (1, Right) Off (0, Left)
RF4 - VHF On (1, Right) On (1, Right)
2. PA TURN ON SEQUENCE
2.1. Connect selected output port to 50 Ω load
2.2. Apply -5.5 V to Vgg terminal
2.3. Connect power supply to Vdd terminal.
2.3.1. Start at 0.00 volts, then SLOWLY increase to + 24 or 28 V
2.3.2. Monitor Vdd supply current (Id), stop increasing Vdd if Id exceeds 20 mA
2.4. SLOWLY raise Vgg (toward zero volts) until Id = 70-80 mA (Vgg should be between -2.95 V to -3.1V)
2.5. Apply RF drive to RF input port.
3. PA TURN OFF SEQUENCE 3.1. Remove RF drive from RF input port.
3.2. Decrease Vdd to zero volts.
3.3. Return Vgg to -5.5 V setting.
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 3 Rev 1.5
Schematic
VR1
L4239nH
L11
82nH
C52
1nF
V1
C41
39pF
Sw
C610.1uF
VDD28V
C21
6.8pF
V2
C22
3.9pFC51
1nF
R1
5ohm
C12
0.1uF
3.3V Reg
C31
12pF
VDD
28V
PA
C70
10UF
C32
6.8pF
L228.2nH
R250ohm
800/900MHz
C42
22pF
C6222uF
C11
100pF
Zener
Z1
C24.7pF
C3
0.1uF
L3216nH
R333ohm
UHF
VCP
L2
4.3nH
SP4T
VHF
SW1
L21
3.6nH
Vgg
-v e
Vdd
R613.3Kohm
L41
7.5nH
C1
1.5nF
L1
4.3nH
RF IN
DIP
L31
7.2nH
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 4 Rev 1.5
Bill Of Material
Part Label Part Description Vendor Name Vendor Part Number
C1 1.5nF 50V 0603 Murata GRM188R71H152KA01D
C2 4.7pF 250V 0603 ATC 600S4R7BT250XT
L1 4.3nH 0603 Coilcraft 0603HP-4N3XG
R1 5.1 ohm 0603 1/10 W Vishay CRCW06035R10JNEA
R2 51 ohm 0603 1/4 W Vishay CRCW060351R0FKEAHP
R3 33 ohm 0603 1/4 W Rohm Semiconductor ESR03EZPJ330
L2 4.3nH 0402 Coilcraft 0402HP-4N3XG
C3, C12 0.1uF 50V 1206 Murata GRM319R71H104KA01D
Z1 7.5V Zener On-Semiconductor MMSZ5236BT1G
Q1 PA device Tagore Technology TA8210D
X1 SP4T Switch Tagore Technology TS7441L
L11 82nH 1008 Coilcraft 1008HQ82XJ
C11 100pF 250V 0603 ATC 600S101JT250XT
L21 3.6nH 0402 Coilcraft 0402HP-3N6XJ
JU3*, JU2 0 ohm 0603 Vishay CRCW06030000Z0EA
C21, C32 6.8pF 250V 0603 ATC 600S6R8JT250XT
L22 8.2nH 0603 Coilcraft 0603HP-8N2XG
C22 3.9pF 250V 0603 ATC 600S3R9BT250XT
L31 7.2nH 0603 Coilcraft 0603HP-7N2XG
C31 12pF 250V 0603 ATC 600S120JT250XT
L32 16nH 0603 Coilcraft 0603HP-16NXG
C51, C52 1nF 100V 0402 Murata GCM155R72A102KA37D
L41 7.5nH 0603 High Current Coilcraft 0603HC-7N5XJ
C41 39pF 250V 0603 ATC 600S390JT250XT
L42 39nH 1008 Coilcraft 1008HQ39XG
C42 22pF 250V 0603 ATC 600S220JT250XT
SW1 DPST DIP Switch CTS Electronic 204-212ST
VR1 3.3V Regulator On-Semiconductor NCV4264-2CST33T3G
R61 3.3k ohm 0603 Vishay CRCW06033K30JNEB
C61 0.1uF 100V 0603 Murata GCM188R72A104KA64D
C62 22uF 6.3V 0603 Murata GRM188R60J226MEA0D
C70 100uF 63V Electrolytic Nichicon UPW1J101MPD1TD
* JU3 is placed upside down on PC board to minimize stray inductance.
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 5 Rev 1.5
Gain, Efficiency and Harmonics for 800/900MHz Path, Vdd=28V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 760 Gain 815 Gain 870 Eff 760 Eff 815 Eff 870
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 760 H2 815 H2 870 H3 760 H3 815 H3 870
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 6 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 760 Id 815 Id 870
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 894 Gain 918 Gain 942 Eff 894 Eff 918 Eff 942
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 7 Rev 1.5
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 894 H2 918 H2 942 H3 894 H3 918 H3 942
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 894 Id 918 Id 942
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 8 Rev 1.5
Gain, Efficiency and Harmonics for UHF Path, Vdd=28V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 380 Gain 450 Gain 520 Eff 380 Eff 450 Eff 520
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 380 H2 450 H2 520 H3 380 H3 450 H3 520
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 9 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 380 Id 380 Id 520
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 10 Rev 1.5
Gain, Efficiency, Harmonics and Idd for VHF Path, Vdd=28V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 135 Gain 155 Gain 175 Eff 135 Eff 155 Eff 175
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 135 H2 155 H2 175 H3 135 H3 155 H3 175
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 11 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 135 Id 155 Id 175
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 12 Rev 1.5
Gain, Efficiency and Harmonics for 800/900MHz Path, Vdd=24V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 760 Gain 815 Gain 870 Eff 760 Eff 815 Eff 870
-80-75-70-65-60-55-50-45-40-35-30-25-20
-80-75-70-65-60-55-50-45-40-35-30-25-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 760 H2 815 H2 870 H3 760 H3 815 H3 870
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 13 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 760 Id 815 Id 870
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 894 Gain 918 Gain 942 Eff 894 Eff 918 Eff 942
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 14 Rev 1.5
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 894 H2 918 H2 942 H3 894 H3 918 H3 942
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 894 Id 918 Id 942
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 15 Rev 1.5
Gain, Efficiency and Harmonics for UHF Path, Vdd=24V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 380 Gain 450 Gain 520 Eff 380 Eff 450 Eff 520
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 380 H2 450 H2 520 H3 380 H3 450 H3 520
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 16 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 380 Id 380 Id 520
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 17 Rev 1.5
Gain, Efficiency, Harmonics and Idd for VHF Path, Vdd=24V, Idq=80mA
0
10
20
30
40
50
60
70
80
13
14
15
16
17
18
19
20
21
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in E
ffic
ien
cy (
%)
Gai
n (
dB
)
Output Power (dBm)
Gain 135 Gain 155 Gain 175 Eff 135 Eff 155 Eff 175
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
16 18 20 22 24 26 28 30 32 34 36 38 40 42
3rd
Har
mo
nic
(d
Bc)
2n
d H
arm
on
ic (
dB
c)
Output Power (dBm)
H2 135 H2 155 H2 175 H3 135 H3 155 H3 175
Preliminary Specification
PA + SP4T
Tagore Technology Inc. Confidential 18 Rev 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
16 18 20 22 24 26 28 30 32 34 36 38 40 42
Dra
in C
urr
ent
(A)
Output Power (dBm)
Id 135 Id 155 Id 175
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