PicoSat TT&C Hardware design
description
Transcript of PicoSat TT&C Hardware design
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2
Electrical
Engineering
DivisionTT&C 架構圖
Transponder
CW circuit
UHF/VHF Antenna
CW 29MHz AntennaMorse Code I/P
Modem
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3
Electrical
Engineering
DivisionBlock diagram-ModemBlock diagram-Modem
FSK Modulator
FSKDeModulator
OSC.
Contr
ol
OB
MU
control
Mod/DeMod
Matching circuit
RF
module
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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
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5
Electrical
Engineering
DivisionBlock diagram-CWBlock diagram-CW
DC
Switch
Osc.
Driver
OB
MU
C
ontrol
MatchingCircuit
Amplifier Amplifier
Antenna
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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
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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
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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
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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
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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
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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
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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
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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
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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
DB(|S[3,1]|) *Splitter
DB(|S[3,2]|) *Splitter
DB(|S[1,1]|) *Splitter
DB(|S[2,2]|) *Splitter
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15
Electrical
Engineering
DivisionRF module for transponderRF module for transponder
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16
Electrical
Engineering
DivisionStructure by Photo-PCBStructure by Photo-PCB
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17
Electrical
Engineering
Division
RF module&Modem RF module&Modem mounting mounting
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18
Electrical
Engineering
Division
RF module control signal wiring
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19
Electrical
Engineering
DivisionComponent modify
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20
Electrical
Engineering
DivisionVHF antenna test setVHF antenna test set
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21
Electrical
Engineering
DivisionCW antenna test setCW antenna test set
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22
Electrical
Engineering
DivisionStructure by Photo-YamSatStructure by Photo-YamSat
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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
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24
Electrical
Engineering
DivisionTest-Spurious fail recordTest-Spurious fail record
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25
Electrical
Engineering
DivisionTest-VHF modulation recordTest-VHF modulation record
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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
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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.
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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
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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”.
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國家太空計劃室
Section : TT&CBy :Yuga_HsuDate : 2005/04/21
CW Hardware Design
Continue Wave (CW) Transmitter
Design & Measurement
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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
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What's Continue Wave
國家太空計劃室
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
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CW Telemetry Data
國家太空計劃室
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國家太空計劃室
Specifications
Frequency 29.49MHz
Output power 200mW/each port
Filter loss < 2dB
Splitter loss < 3.5dB
Max. Spurious output < -50dBc
Frequency stability ±25Hz/day
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Transmitter Configuration
國家太空計劃室
Ant2
Splitter Filter
Ant1
Crystal Oscillator
2thAmplifier
1th Amplifier
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Oscillator Circuit國家太空計劃室
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Amplifier Circuit國家太空計劃室
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The Amplifier Output Voltage 國家太空計劃室
4.96V
F=29.48MHz
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The Amplifier Circuit國家太空計劃室
2S1971/0
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Low Pass Filter Design國家太空計劃室
Microwave Office Simulation
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Low Pass Filter Simulation國家太空計劃室
Simulation Result
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The Filter Circuit國家太空計劃室
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Amplifier Output Without Filter國家太空計劃室
29.49MHz24.06dBm
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國家太空計劃室Amplifier Output With Filter
29.49MHz22.06dBm
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Power Splitter Design國家太空計劃室
Microwave Office Simulation
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Power Splitter Simulation國家太空計劃室
Simulation Result
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The Splitter Circuit國家太空計劃室
RF in
Ant 2
Ant 1
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CW Transmitter Schematic國家太空計劃室
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國家太空計劃室
The Circuit Outline
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The CW Layout Design國家太空計劃室
Protel_PCB Layout
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CW Layout Circuit國家太空計劃室
Enable GND
+5V GND
Ant1
Ant2
Splitter
Filter
OSC
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CW Output Power國家太空計劃室
29.49MHz24.06dBm
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CW Low-Pass Filter國家太空計劃室
Without Filter
with Filter
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CW Spurious Measurement國家太空計劃室
52dBc58.9MHz
63dBc88.4MHz
Max. Spurious
29.4MHz
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The Transmitter Noise Per Hz國家太空計劃室
Noise