ECE 498ECE 498

Frequency Division MultiplexingFrequency Division Multiplexing

On On

PCB (Printed Circuit Board)PCB (Printed Circuit Board)

Science and Engineering Project CenterDepartment of Electrical and Computer Engineering

Seattle University

Frequency Division MultiplexingFrequency Division Multiplexing On On

PCB (Print Circuit Board)PCB (Print Circuit Board)

ECE 498ECE 498

Team Members:Team Members:

Kun-Chin ChienKun-Chin Chien

Michael MitchellMichael Mitchell

Coord. Advisor:Coord. Advisor:

Dr. Al MoserDr. Al Moser

Faculty Advisor:Faculty Advisor:

Dr. Robert G. HeerenDr. Robert G. Heeren

Our Goal

• Incorporation of a FDM circuit onto a PCB to allow students to aim their focus on the study of signal flow

Overview

• Project Specifics

• FDM Laboratory Winter Quarter 05

• Replacement multiplier IC

• New PSpice schematic and PCB layout

Project Steps:1. Design of Low Pass & Band Pass Filters2. Research a PSpice model for the IC and

build the complete schematic into PSpice3. Research designs for PCB Footprints 4. Create the Netlist to be imported into OrCad

Layout Plus5. Design the PCB layout6. Route the PCB layout

FDM LaboratoryFDM LaboratoryOverviewOverview

FDM SchematicFDM Schematic With IC MC1496 With IC MC1496

R68750R69

750

R70

50k

MC1496

Same Carrier Input

fc1

+12 Vdc

Appendix 1: Schematic Diagram

Message Input

Output to Spectrum Analyzer

fc2

Channel # 2

Channel # 1

+3

-2

V+7

V-4

OUT6

OS11

OS25

LM 741CN

LM741

Output to Spectrum Analyzer

Carrier Input

R721k

0

Channel # 3fc3

Same Carrier Input

0

R731k

+12 Vdc

Message Input

Carrier Input

+12 Vdc

fc1

fc2

R1

3.9kRL3.9k

RL13.9k

C4

0.1u

30kHz Bandpass Filter

C50.1u

R2

1k

R3

1k

06

+3

-2

V+7

V-4

OUT6

OS11

OS25

U2

LM-741

0

V1

0Vdc

MODULATOR

012

0

R424k

C2

1n

C3

1n

R5

11k

V2

0Vdc

+3

-2

V+7

V-4

OUT6

OS11

OS25

U7

LM-741

0

V10

0Vdc

-12 Vdc

-12 Vdc

-12 Vdc

0

ADDER

R66.2k

C18

1n

C19

1n

R7

10k

V11

0Vdc

0

0

10kHz Bandpass Filter

3 +

2- V+

7V-

4

OUT6

C28

C35

C11

U4

LM318

+12 Vdc

+3

-2

V+7

V-4

OUT6

OS11

OS25

U8

LM-741

0

V13

0Vdc

0

R82.7k

C20

1n

C21

1n

R9

11k

V14

0Vdc

0

R10

1k

R156.8k

fc3

5

DEMODULATOR

14

2 3

21RF

50k

0

V4

10Vdc

V510Vdc

0

V6

-8.0Vdc

R116.8k

0 0

C22

1u

0 0

C230.1u

R501k

C24

0.1u

Same Carrier Input

C25

1u

R5151

C261u

R12

33k

0

R711k

R52

1.3k

6

12

R13

33k

R53

100

14 5

32

R14

33k

Channel # 1

10

8

4

1 MC1496

R541k

8

0

C270.005u

R553.0k

C9

1u

0 0

R563.0k

C100.1u

R57

10k

R201k

0

C11

0.1u

C28

0.1u

fm1

0

C12

1u

C290.1u

R2151

R58

1k

0 C61u

R16

1.3k

0

6

12

R17

100

Output to Spectrum Analyzer

+12 Vdc

5

3

14

2

8

10

4

1

Carrier Input

MC1496

R181k

0

C70.005u

R193.0k

R223.0k

R23

10k

0

C8

0.1u

0

C130.1u

R24

1k

R25

51

10

R26

3.9k

Channel # 2

4

1

RL23.9k

R2751

RL33.9k

0

C14

0.1u

C30

1u

0

C150.1u

R28

1k

C310.1u

R29

1k

0

R591k

6

C32

0.1u

12

0

C33

1u

R6051

fm2

3 +

2- V+

7V-

4

OUT6

C28

C35

C11

U5

LM318

C341u

R61

1.3k

R30

1k

0

6

R316.8k

5

12

14

3

R62

100

0

2

5

3

14

V8

-8.0Vdc

2

8

8

0

10

R3251

1 MC1496

4

R33

51

R631k

0

1

10

R3451

4

C350.005u

R3551

R643.0k

+12 Vdc

R36750

R653.0k

Channel # 3

R37750

R66

10k

MC1496

R38

50k

0 0

C36

0.1u

R39750

C370.1u

R67

1k

R40750

R41

50k

MC1496

R42

3.9kRL43.9k

RL53.9k

C16

0.1u

fm3

C170.1u

R43

1k

R44

1k

0

06

0

12 3 +

2- V+

7V-

4

OUT6

C28

C35

C11

U6

LM318

R45

1k

R466.8k

Message Input

14 5

3

0

2

V9

-8.0Vdc

0

8

R47

51

10

4

1

R4851

20kHz Bandpass Filter

R4951

Analog DevicesAnalog DevicesAnalog MultiplierAnalog Multiplier

AD633JNAD633JN

1

TP8TEST POIN T

X11

X22

Y13

Y24

Z6

W7

V+8

V-5

D 1

AD 633J /AD

+3

-2

V+7

V-4

OU T6

OS11

OS25

BPF1

LM741

R L2_3

11.2k

1

10V1

TEST POIN T

R L2_1

5.6k

R L2_2

5.6k

R L1_3

22.5k

R L1_1

11.25k

R L1_2

11.25k

V4

C L1_1

2n

C L1_21n

1

10V2

TEST POIN T

C L2_1

1n

C L2_21n

V4

0

V4

V1

0

0

0

V1

1

2

TEST POIN T

BN C

0

R D 1_21k

R M2_1

50KSET = 0 .5

out2

V1

R D 2_21k

R M1_1

50kSET = 0 .5

V1

R A3

50k

SET = 0 .5

R D 1_1

50kSET = 0 .5

R D 2_1

50kSET = 0 .5

X11

X22

Y13

Y24

Z6

W7

V+8

V-5

D 2

AD 633J /AD

0

R B1_1

11k

0

R B1_224k

R B2_1

10k

R B2_26.2k

V5

FR EQ = 10kVAMPL = 10VVOFF = 0

C B1_1

1n

C B2_1

1n

V6

FR EQ = 20kVAMPL = 2.5VVOFF = 0

C B2_2

1n

0

0

0

0

0

V1

0

Vm1

C B1_2

1n

R A1

33k

0

Vm2

R A2

33k

0

0

R A46.8k

V315V

V415V

0

0

0

V7

FR EQ = 1kVAMPL = 2.5VVOFF = 0

0 0

0

1C ommon Ground

TEST POIN T

R M1_21k

0

00

V110V

V210V

Vc V3

1

2

C A

BN C

V4V2

+3

-2

V+7

V-4

OU T6

OS11

OS25

LPF1

LM741

+3

-2

V+7

V-4

OU T6

OS11

OS25

LPF2

LM741

V3

+3

-2

V+7

V-4

OU T6

OS11

OS25

BPF2

LM741

V3

+3

-2

V+7

V-4

OU T6

OS11

OS25

Adder

LM741

X11

X22

Y13

Y24

Z6

W7

V+8

V-5

M1

AD 633J /AD

V1

Vm1

X11

X22

Y13

Y24

Z6

W7

V+8

V-5

M2

AD 633J /AD

V3

C M1_1

0.1u

Vm2

1

2

IM1

BN C

C M1_2

0.1u

V3

0

V2

1

2

IM2

BN C

1

TP7TEST POIN T

C M2_1

0.1u

Vc

0

1

2

OM1

BN C

V2

C M2_2

0.1u 0

Vc

1

2

OM2

BN C

V2

out1

Vc

0

0

V2

R M2_21k

0

0

Vc

0

0

V2

0

C D 1_1

0.1u

C D 1_2

0.1u

V4

C D 2_1

0.1u

C D 2_2

0.1u

ModulatorModulator DemodulatorDemodulatorAdderAdder Band Pass FilterBand Pass Filter Low Pass FilterLow Pass Filter

FDM SchematicFDM SchematicWith IC AD633JNWith IC AD633JN

Foot Print of the Banana Plug Jack

AMP BNC ConnectorAMP BNC ConnectorAMP 222132-1AMP 222132-1

Foot Print of theBayonet Neill Concelman

Foot Print of theVariable Resistor

Layout of the Circuit(Using OrCad Layout Plus)

Layout of the Circuit (Un-routed)

Layout of the Circuit (6 Layers)

-15V

Input 1

Input 2

CarrierAdder

Test Point

Output 1

Output 2

+10V

-10V

+15V

Modulator

DemodulatorBPF

LPF

2 Layers

Manufactured Price Of the PCB

Number of LayersNumber of Layers PricePrice

22 500500

44 10001000

66 18001800

88 23002300

1010 27002700

Size of the Board 4.925in(L) X 3.6in(W)

Price is dependent on the number of layers, not the number of boards

ECE 498

ConclusionConclusion

ECE 498

QuestionsQuestions

????????

Thank you for your Thank you for your attention!attention!

ECE 498