PicoSat TT&C Hardware design

2005.04.21EE/劉錦文liu_cliff@nspo.org.tw

Electrical

Engineering

DivisionTT&C 架構圖

Transponder

CW circuit

UHF/VHF Antenna

CW 29MHz AntennaMorse Code I/P

Electrical

Engineering

DivisionBlock diagram-ModemBlock diagram-Modem

FSK Modulator

FSKDeModulator

control

Mod/DeMod

Matching circuit

module

Electrical

Engineering

DivisionBlock diagram-TransponderBlock diagram-Transponder

Matching circuit

RF moduleVX-1R

DividerCombiner

control

Rreq. contr

ol Band

select

monitor

Antenna

Electrical

Engineering

DivisionBlock diagram-CWBlock diagram-CW

Switch

Driver

ontrol

MatchingCircuit

Amplifier Amplifier

Antenna

Electrical

Engineering

DivisionInterfaceInterface

TT&C Transponder

Data in

Data out

control

Rreq. contr

ol Band

select

monitor

CW control

VHF Antenna

CWAntenna

Electrical

Engineering

DivisionTT&C schematic-allTT&C schematic-all

RF_RST

X2 3.579M

RF_PWR

C220.1uF

0.068uH

RF_PWR

C38open

C418pF

R32470

BB_CMD

OBMU_RFM

C23 10u/10V

C518pF

C24330p

C29330p

RF_ACK

R1 10k

R24open

C3333p

RF_RST

L1CHOCK

C170.1uF

C12 100pF

D1 IN4148

RF_ACK

C340.01uF

C16 0.1uF

R23open

RF_FUNC

(RX_5V)

Shieling

C218pF

D2 IN4148

C90.1uF

R7 6.8k

0.01uF

5V C39

RF_PTT

(GND_PWR)

CW BOARD

C2010u/10V

C80.1uF

R26a 1

16/XTAL

RXAMPOUT

Vss Vbias

R27a470

C39b0.1uF

TRU1THRU

(TX_5V)

To CW antenna

C36270p

C118pF

C30open

3.579M

VX-1Rd

PWRCHPTT/MIC

VCCGND

SPKRMODPWR_S

RF_RSTRF_ACK

C31open

ToAntenna1port

16/XTAL

RXAMPOUT

Vss Vbias

C2647p

R12100

R22a200

0.068uH

BB_CMD_TX

R3 100k

BB_CMD

Q42N2222A

C350.01uF

MAX414

1234567

1011121314

OUT1IN1-IN1+V+IN2+IN2-OUT2

IN3-OUT3

IN3+V-

IN4+IN4-

C60.1uF

0.1uFC39a

C2547pF

C280.1u

YamSat TT&C schematic drawing

YAMSAT-DRAW-0040

A3 2.00

NSPO°ê®a¤ÓªÅ p¹º«Ç

SIZE DRAWING NO. ISS.

SCALE WEIGHT SHEET OF

BB_TLM

R8 10k

C210.1uF

C30.1uF

BB_CMD

RF_PTT

C10 1nF

BB_TLM

Q1C1973

ToAntenna2port

R2100k

C270.1uF

C11 100pF

Q31906

R5 100

R19100

C180.1uF

C7 0.1uF

29.355MHz

RF_UPTUNE

OBMU_TT&C

Q2C1384

BB_CMD_TX

C3210u

C130.1uF C15

RF_UPTUNE已有修正

Electrical

Engineering

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

RF_PWR

OBMU_RFM

C23 10u/10V

RF_ACKRF_RST

L1CHOCK

(RX_5V)

(GND_PWR)C2010u/10V

TRU1THRU

(TX_5V)

TX_5VBB_CMD_TX

BB_CMD

RF_PTTBB_TLM

C270.1uF

OBMU_TT&C

BB_CMD_TX

RF_UPTUNE

Electrical

Engineering

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

X2 3.579M

C418pF

C518pF

5VC16 0.1uF

C90.1uF

R7 6.8k

16/XTAL

RXAMPOUT

Vss Vbias

C60.1uF

BB_TLM

R8 10k

C180.1uF

Electrical

Engineering

Division

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

BB_CMD

R1 10k5V

C170.1uF

C12 100pF

D1 IN4148

C218pF

D2 IN4148

5V C39

C80.1uF

C118pF

3.579M

16/XTAL

RXAMPOUT

Vss Vbias

R12100

R3 100k

MAX414

1234567

1011121314

OUT1IN1-IN1+V+IN2+IN2-OUT2

IN3-OUT3

IN3+V-

IN4+IN4-

C30.1uF

C10 1nF

R2100k

C11 100pF

R5 100

C7 0.1uF

C130.1uF

Electrical

Engineering

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

RF_RST

RF_PWR

RF_ACK

RF_FUNC

RF_PTT

VX-1Rd

PWRCHPTT/MIC

VCCGND

SPKRMODPWR_S

RF_RSTRF_ACK

R12100

RF_UPTUNE

Electrical

Engineering

Division

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

15pF ToAntenna1port

0.068uH

ToAntenna2port

Electrical

Engineering

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

• SimulatorMicrowave office 4.

0• Theoretical

Wilkson power divider, ref.Microwave engineering/Pozar

0.068 uHL1

0.068 uHL2

33 pFC1

15 pFC2

15 pFC3

100 OhmR1

Z=P=50 Ohm1

Z=P=50 Ohm2

Z=P=50 Ohm3

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

0.439 GHz -24

0.145 GHz -3.08

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

Electrical

Engineering

DivisionRF module for transponderRF module for transponder

Electrical

Engineering

DivisionStructure by Photo-PCBStructure by Photo-PCB

Electrical

Engineering

Division

RF module&Modem RF module&Modem mounting mounting

Electrical

Engineering

Division

RF module control signal wiring

Electrical

Engineering

DivisionComponent modify

Electrical

Engineering

DivisionVHF antenna test setVHF antenna test set

Electrical

Engineering

DivisionCW antenna test setCW antenna test set

Electrical

Engineering

DivisionStructure by Photo-YamSatStructure by Photo-YamSat

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

failfailfail

105 116 110

145.85015 145.84975 145.85088

Electrical

Engineering

DivisionTest-Spurious fail recordTest-Spurious fail record

Electrical

Engineering

DivisionTest-VHF modulation recordTest-VHF modulation record

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

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.

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

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

Splitter Filter

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

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

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

Splitter

Filter

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

PicoSat TT&C Hardware design

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Transcript of PicoSat TT&C Hardware design

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