1 picosat tt&c hardware design 2005.04.21 ee/ 劉錦文 [email protected]

1

PicoSat TT&C Hardware design

2005.04.21EE/劉錦文[email protected]

2

Electrical

Engineering

DivisionTT&C 架構圖

Transponder

CW circuit

UHF/VHF Antenna

CW 29MHz AntennaMorse Code I/P

Modem

3

Electrical

Engineering

DivisionBlock diagram-ModemBlock diagram-Modem

FSK Modulator

FSKDeModulator

OSC.

Contr

ol

OB

MU

control

Mod/DeMod

Matching circuit

RF

module

4

Electrical

Engineering

DivisionBlock diagram-TransponderBlock diagram-Transponder

Matching circuit

PTT

MODEM

RF moduleVX-1R

DividerCombiner

Reset

control

Rreq. contr

ol Band

select

DC

monitor

Antenna

Antenna

5

Electrical

Engineering

DivisionBlock diagram-CWBlock diagram-CW

DC

Switch

Osc.

Driver

OB

MU

C

ontrol

MatchingCircuit

Amplifier Amplifier

Antenna

6

Electrical

Engineering

DivisionInterfaceInterface

TT&C Transponder

Data in

Data out

GND

Reset

control

Rreq. contr

ol Band

select

DC

monitor

CW control

DC

+

5V

DC

+

3.6V

GN

D

VHF Antenna

CWAntenna

7

Electrical

Engineering

DivisionTT&C schematic-allTT&C schematic-all

T5a

5V

15pF

RF_RST

X2 3.579M

RF_PWR

C220.1uF

R11

100k

0.068uH

TRU8

THRU

1T

R410k

RF_PWR

C38open

C418pF

T2

R32470

BB_CMD

JP1

OBMU_RFM

12345

C23 10u/10V

C518pF

5V

TRU6

THRU

1T

J2

SMA1

2

C24330p

TRU5

THRU

1T

C29330p

RF_ACK

R1 10k

R24open

C3333p

RF_RST

5V

L1CHOCK

R30

270

0.00

5V

T4

C170.1uF

C12 100pF

D1 IN4148

RF_ACK

C340.01uF

C16 0.1uF

TRU2

THRU

1T

R9

10k

R23open

R31

1k

RF_FUNC

(RX_5V)

Shieling

3.6V

C218pF

D2 IN4148

C90.1uF

R7 6.8k

J1

SMA1

2

3.6V

C37

0.01uF

5V C39

0.1uF

R181K

BB_CW

RF_PTT

(GND_PWR)

CW BOARD

C19

0.1uF

C2010u/10V

C80.1uF

R26a 1

5V

U3

MX614

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16/XTAL

XTAL

M0

M1

RXIN

RXAMPOUT

TXOUT

Vss Vbias

RXEQ

TXD

CLK

RXD

DET

/RDY

Vdd

L4

short

R27a470

C39b0.1uF

TRU1THRU

1T

15pF

(TX_5V)

To CW antenna

C36270p

C118pF

C30open

R10

10k

X1

3.579M

TRU3

THRU

1T

VX-1R

RA1

VX-1Rd

123

11

109

456

78

PWRCHPTT/MIC

RF

VCCGND

SPKRMODPWR_S

RF_RSTRF_ACK

C31open

BB_CW

5V

L2

short

5V

ToAntenna1port

U1

MX614

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16/XTAL

XTAL

M0

M1

RXIN

RXAMPOUT

TXOUT

Vss Vbias

RXEQ

TXD

CLK

RXD

DET

/RDY

Vdd

R28

10

C2647p

R12100

L3

short

33pF

5V

TX_5V

R22a200

0.068uH

BB_CMD_TX

R6

10k

R21

short

R3 100k

BB_CMD

Q42N2222A

C350.01uF

5V

JP3

DRU

12345

J3SMA

1

2

R1710

U2

MAX414

1234567

98

1011121314

OUT1IN1-IN1+V+IN2+IN2-OUT2

IN3-OUT3

IN3+V-

IN4+IN4-

OUT4

C60.1uF

0.1uFC39a

C2547pF

C280.1u

R20

2k

YamSat TT&C schematic drawing

YAMSAT-DRAW-0040

1 1

A3 2.00

1:1

NAME

ORIG

CHECK

PM

QA

CADM

DATE

/ /

/ /

/ /

/ /

/ /

NSPO°ê®a¤ÓªÅ p¹º«Ç

TITLE

SIZE DRAWING NO. ISS.

SCALE WEIGHT SHEET OF

REV.

T3

C14

0.1uF

BB_TLM

R8 10k

C210.1uF

RF_S

C30.1uF

R29

22k

100k

BB_CMD

RF_PTT

5V

C10 1nF

BB_TLM

Q1C1973

5V

R25

47k

ToAntenna2port

R2100k

C270.1uF

5V

C11 100pF

Q31906

R5 100

R19100

NC

5V

C180.1uF

C7 0.1uF

X3

29.355MHz

R26

1

R16

6.8k

RF_S

RF_UPTUNE

TRU7

THRU

1T

JP2

OBMU_TT&C

12345

5V

Q2C1384

BB_CMD_TX

TRU4

THRU

1T

+

C3210u

C130.1uF C15

4.7uF

RF_UPTUNE已有修正

8

Electrical

Engineering

DivisionTT&C schematic-Pin assignmentTT&C schematic-Pin assignment

RF_PWR

JP1

OBMU_RFM

12345

C23 10u/10V

TRU5

THRU

1T

RF_ACKRF_RST

L1CHOCK

(RX_5V)

3.6V

BB_CW

(GND_PWR)C2010u/10V

TRU1THRU

1T

(TX_5V)

TRU3

THRU

1T

5V

TX_5VBB_CMD_TX

BB_CMD

JP3

DRU

12345

BB_CMD

RF_PTTBB_TLM

C270.1uF

RF_S

JP2

OBMU_TT&C

12345

BB_CMD_TX

TRU4

THRU

1T

RF_UPTUNE

9

Electrical

Engineering

DivisionTT&C schematic-FSK modulatorTT&C schematic-FSK modulator

X2 3.579M

C418pF

C518pF

5VC16 0.1uF

R9

10k

C90.1uF

R7 6.8k

C19

0.1uF

U3

MX614

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16/XTAL

XTAL

M0

M1

RXIN

RXAMPOUT

TXOUT

Vss Vbias

RXEQ

TXD

CLK

RXD

DET

/RDY

Vdd

R10

10k

R6

10k

C60.1uF

BB_TLM

R8 10k

5V

5V

C180.1uF

5V

C15

4.7uF

10

Electrical

Engineering

Division

TT&C schematic-FSK TT&C schematic-FSK demodulatordemodulator

R11

100k

R410k

BB_CMD

R1 10k5V

C170.1uF

C12 100pF

D1 IN4148

C218pF

D2 IN4148

5V C39

0.1uF

C80.1uF

C118pF

X1

3.579M

5V

U1

MX614

1

2

3

4

5

6

7

8 9

10

11

12

13

14

15

16/XTAL

XTAL

M0

M1

RXIN

RXAMPOUT

TXOUT

Vss Vbias

RXEQ

TXD

CLK

RXD

DET

/RDY

Vdd

R12100

R3 100k

U2

MAX414

1234567

98

1011121314

OUT1IN1-IN1+V+IN2+IN2-OUT2

IN3-OUT3

IN3+V-

IN4+IN4-

OUT4

C14

0.1uF

C30.1uF

C10 1nF

5V

R2100k

C11 100pF

R5 100

C7 0.1uF

C130.1uF

11

Electrical

Engineering

DivisionTT&C schematic-FM radioTT&C schematic-FM radio

RF_RST

RF_PWR

RF_ACK

RF_FUNC

3.6V

RF_PTT

VX-1R

RA1

VX-1Rd

123

11

109

456

78

PWRCHPTT/MIC

RF

VCCGND

SPKRMODPWR_S

RF_RSTRF_ACK

R12100

RF_S

NC

R16

6.8k

RF_UPTUNE

12

Electrical

Engineering

Division

TT&C schematic-Divider/ TT&C schematic-Divider/ CombinerCombiner

15pF

J2

SMA1

2

J1

SMA1

2

15pF ToAntenna1port

33pF

0.068uH

100k

0.068uH

ToAntenna2port

13

Electrical

Engineering

DivisionDivider/Combiner simulation(1)Divider/Combiner simulation(1)

• SimulatorMicrowave office 4.

0• Theoretical

Wilkson power divider, ref.Microwave engineering/Pozar

IND

L=ID=

0.068 uHL1

IND

L=ID=

0.068 uHL2

CAP

C=ID=

33 pFC1

CAP

C=ID=

15 pFC2

CAP

C=ID=

15 pFC3

RES

R=ID=

100 OhmR1

PORT

Z=P=50 Ohm1

PORT

Z=P=50 Ohm2

PORT

Z=P=50 Ohm3

14

Electrical

Engineering

DivisionDivider/Combiner simulation(2)Divider/Combiner simulation(2)

0.05 0.15 0.25 0.35 0.45 0.5Frequency (GHz)

VHF Splitter

-30

-20

-10

0

0.439 GHz -24

0.145 GHz -3.08

DB(|S[2,1]|) *Splitter





15

Electrical

Engineering

DivisionRF module for transponderRF module for transponder

16

Electrical

Engineering

DivisionStructure by Photo-PCBStructure by Photo-PCB

17

Electrical

Engineering

Division

RF module&Modem RF module&Modem mounting mounting

18

Electrical

Engineering

Division

RF module control signal wiring

19

Electrical

Engineering

DivisionComponent modify

20

Electrical

Engineering

DivisionVHF antenna test setVHF antenna test set

21

Electrical

Engineering

DivisionCW antenna test setCW antenna test set

22

Electrical

Engineering

DivisionStructure by Photo-YamSatStructure by Photo-YamSat

23

Electrical

Engineering

DivisionTest-Test recordTest-Test record

S/N : 1K01 Rev: 0.02 , 10/26/2001

Freq. Test Data

Item Spec. MHz 25℃ 45℃ -5℃1 Psat >= 27 dBm(3.6V) 145.85 26.95 27.48 27.2

2 Tx Noise Density @10MHz <= -110 dBc/Hz @Psat O/P 145.85 -128 -123 -132

25~50MHz <= -50 dBc -70 -73.63 -89

50~130 MHz <= -50dBc -72 -50 -80.17

3 Spurious 130~140 MHz <= -50 dBc -73 -70.33 -70

@Psat O/P 140~150 MHz <= -50dBc - - -

150~300 MHz <= -50dBc -61 -68 -82

300~1000 MHz <= -50dBc -52 -20 -40.33

100Hz < 60dBc/Hz

1kHz < 70dBc/Hz

10kHz < 80dBc/Hz

100kHz < 90dBc/Hz

5 Freq. Stability +/- 20ppm 145.85

6 Threshold <=-155dB 145.85 NA -200 -200

7 Psat >= 23 dBm(5V) 29.355 22 22 228 Tx Noise Density @10MHz <= -110 dBc/Hz @Psat O/P 29.355 -45 -115 -114

2.5~25MHz <= -50 dBc -76 -81 -91

9 Spurious 25~50 MHz <= -50dBc 9 -45 -44.83

@Psat O/P 50~140 MHz <= -50 dBc 3 1 2.1140~1000 MHz <= -50dBc -35 -22.83 -26

100Hz < 60dBc/Hz

1kHz < 70dBc/Hz

10kHz < 80dBc/Hz

100kHz < 90dBc/Hz

11 Freq. Stability +/- 20ppm 29.355 29.3583 29.356283 29.35707

90 105 -107

29.355

65 86 -80.82

82 106 -103

85 104 -109

Phase Noise4

10 Phase noise

YamSat TT&C test datasheetDate: 11/6'2001 By: Cliff Liu Appr:

145.85

fail fail fail

fail fail fail

failfailfail

105 116 110

145.85015 145.84975 145.85088

24

Electrical

Engineering

DivisionTest-Spurious fail recordTest-Spurious fail record

25

Electrical

Engineering

DivisionTest-VHF modulation recordTest-VHF modulation record

26

Electrical

Engineering

DivisionEnd to end test (1)

• Frequency : 145.85MHz• Bit rate : 1.2kHz• Test Item : Free space 145.85MHz interferen

ce at HsinChu.• Location : 南寮• Distance : 1km• Date : 10/4’2001

27

Electrical

Engineering

Division

End to end test (1)-Test End to end test (1)-Test resultresult

• VHF Command BER > 10-6

Telemetry BER >10-6

• CWMorse code decode during test period: 95%

• ConclusionVery good a test result.

28

Electrical

Engineering

DivisionEnd to end test(2)End to end test(2)

• Location Ground Station at NSPO’10F

Latitude: 24o47’02.4” Longitude: 121o00’07.04” The height above mean sea level : 150m

Beacon site at NSPO’10F Distant of ground station 25m.

湖口休息站 Latitude: 24o51’35.8” Longitude: 121o00’43.0” The height above mean sea level : 195m Distant to Ground Station 8.68km

29

Electrical

Engineering

DivisionTest result summaryTest result summary

• VHFFrequency 145.85MHzReal test path loss: 133~142dB

The 600km orbital height max. space loss = 145dB

The theoretical value of path loss: 99dB Performance of data package

50% successfully received Amateur radio to estimate are “Acceptable”.

國家太空計劃室

Section : TT&CBy :Yuga_HsuDate : 2005/04/21

CW Hardware Design

Continue Wave (CW) Transmitter

Design & Measurement

Overall 國家太空計劃室

What's Continue Wave

CW Specifications

Transmitter Configuration

Oscillator Circuit

Amplifier Circuit

Low Pass Filter Design

Power Splitter Design

Output power Measurement

What's Continue Wave


波的頻率和振幅是固定不變的特殊的節奏斷續發射電波也是屬於一種調制的方式電路相當簡單，容易製作干擾很多的狀況下比語音容易分辨有較長通訊的距離

CW Telemetry Data



Specifications

Frequency 29.49MHz

Output power 200mW/each port

Filter loss < 2dB

Splitter loss < 3.5dB

Max. Spurious output < -50dBc

Frequency stability ±25Hz/day

Transmitter Configuration


Ant2

Splitter Filter

Ant1

Crystal Oscillator

2thAmplifier

1th Amplifier

Oscillator Circuit國家太空計劃室

Amplifier Circuit國家太空計劃室

The Amplifier Output Voltage 國家太空計劃室

4.96V

F=29.48MHz

The Amplifier Circuit國家太空計劃室

2S1971/0

Low Pass Filter Design國家太空計劃室

Microwave Office Simulation

Low Pass Filter Simulation國家太空計劃室

Simulation Result

The Filter Circuit國家太空計劃室

Amplifier Output Without Filter國家太空計劃室

29.49MHz24.06dBm

國家太空計劃室Amplifier Output With Filter

29.49MHz22.06dBm

Power Splitter Design國家太空計劃室

Microwave Office Simulation

Power Splitter Simulation國家太空計劃室

Simulation Result

The Splitter Circuit國家太空計劃室

RF in

Ant 2

Ant 1

CW Transmitter Schematic國家太空計劃室


The Circuit Outline

The CW Layout Design國家太空計劃室

Protel_PCB Layout

CW Layout Circuit國家太空計劃室

Enable GND

+5V GND

Ant1

Ant2

Splitter

Filter

OSC

CW Output Power國家太空計劃室

29.49MHz24.06dBm

CW Low-Pass Filter國家太空計劃室

Without Filter

with Filter

CW Spurious Measurement國家太空計劃室

52dBc58.9MHz

63dBc88.4MHz

Max. Spurious

29.4MHz

The Transmitter Noise Per Hz國家太空計劃室

Noise

1 picosat tt&c hardware design 2005.04.21 ee/ 劉錦文 [email protected]

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