FPGA-DSP Board for Narrowband SDR
Part 2: transmission and RF front end
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Extra info / Update
FPGA, DSP, SDR, Radio, Transmitter, Receiver, Amateur Radio
Level
Expert level
Time
2 hours approx.
Tools
SMD soldering tools
Cost
£45 / €50 / $55 approx.
Component list
160160-1: bare PCB for Radio board
Component List
Resistors
Default: 1%, 100mW, 0603
R1,R2,R10 = 1kOhm
R3,R5 = 56Ohm
R4,R6 = 120Ohm
R7 = 5.6kOhm
R8 = 22kOhm
R9 = 330Ohm, 1%, 250mW, 1206
Capacitors
Default: 0603
C1,C4 = 150pF
C2,C3 = 270pF
C5,C6,C8,C9,C11,C13-C18 = 100nF
C7 = 1nF
C10 = 8.2pF, ±0.25pF
C12 = 10pF
Inductors
L1,L2,L3 = 330nH, 5%, 310mA, fres 60 MHz (36502AR33JTDG, TE Connectivity)
L4,L5,L6 = 1000Ohm @ 100MHz, 200mA (HZ0603B102R-10, Laird Technologies)
Semiconductors
D1 = BAS70-04
LED1 = green, 0805
T1 = BFR520
IC1,IC2 = SA602AD, SO-8
Miscellaneous
K1,K2,K3,K5 = SMA connector, straight jack, 50Ohm
K4 = 3-pin pinheader, 0.1” pitch, vertical
K6,K7 = 2-way PCB screw terminal block, 0.2” pitch
FL1 = 45MHz crystal filter, 1kOhm, BW=15kHz (see text), e.g. Golledge crystal filter GSF-75 45R15B1 45.0MHz
PCB # 160160-1
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