Version 4
SHEET 1 880 680
WIRE -544 -224 -544 -256
WIRE -544 -112 -544 -144
WIRE -544 64 -544 32
WIRE -544 176 -544 144
WIRE -512 -256 -544 -256
WIRE -512 32 -544 32
WIRE -240 -192 -336 -192
WIRE -240 -192 -240 -256
WIRE -240 -128 -240 -192
WIRE -240 96 -336 96
WIRE -240 96 -240 32
WIRE -240 160 -240 96
WIRE -208 -256 -240 -256
WIRE -208 -128 -240 -128
WIRE -208 32 -240 32
WIRE -208 160 -240 160
WIRE -176 -304 -192 -304
WIRE -176 -288 -176 -304
WIRE -176 -80 -192 -80
WIRE -176 -80 -176 -96
WIRE -176 -16 -192 -16
WIRE -176 0 -176 -16
WIRE -176 208 -192 208
WIRE -176 208 -176 192
WIRE -128 368 -128 336
WIRE -128 480 -128 448
WIRE -96 336 -128 336
WIRE -80 -128 -144 -128
WIRE -48 32 -144 32
WIRE -48 32 -48 -96
WIRE -16 -256 -144 -256
WIRE 16 160 -144 160
WIRE 16 160 16 -224
WIRE 96 368 96 336
WIRE 96 480 96 448
WIRE 112 -256 48 -256
WIRE 112 -128 -16 -128
WIRE 128 336 96 336
WIRE 272 -256 208 -256
WIRE 272 -128 208 -128
WIRE 304 -304 288 -304
WIRE 304 -288 304 -304
WIRE 304 -80 288 -80
WIRE 304 -80 304 -96
WIRE 368 -256 336 -256
WIRE 368 -224 368 -256
WIRE 368 -128 336 -128
WIRE 368 -128 368 -160
WIRE 400 -256 368 -256
WIRE 400 -128 368 -128
WIRE 432 -208 368 -160
WIRE 432 -208 432 -224
WIRE 432 -176 368 -224
WIRE 432 -160 432 -176
WIRE 432 368 432 336
WIRE 432 480 432 448
WIRE 464 336 432 336
WIRE 496 -256 464 -256
WIRE 496 -128 464 -128
WIRE 656 368 656 336
WIRE 656 480 656 448
WIRE 688 336 656 336
FLAG -128 480 0
FLAG -96 336 cos_fa
IOPIN -96 336 Out
FLAG 96 480 0
FLAG 128 336 sin_fa
IOPIN 128 336 Out
FLAG 432 480 0
FLAG 464 336 cos_fm
IOPIN 464 336 Out
FLAG 656 480 0
FLAG 688 336 sin_fm
IOPIN 688 336 Out
FLAG -192 -16 cos_fa
FLAG -192 208 sin_fa
FLAG -192 -304 cos_fa
FLAG -192 -80 sin_fa
FLAG 288 -304 cos_fm
FLAG 288 -80 sin_fm
FLAG 496 -256 LSB
FLAG 496 -128 USB
FLAG -544 -112 0
FLAG -512 -256 cos_fs
IOPIN -512 -256 Out
FLAG -544 176 0
FLAG -512 32 sin_fs
IOPIN -512 32 Out
FLAG -336 -192 cos_fs
IOPIN -336 -192 In
FLAG -336 96 sin_fs
IOPIN -336 96 In
SYMBOL voltage -128 352 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 1V {fa} 0 0 90)
SYMBOL voltage 96 352 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(0 1V {fa} 0 0 0)
SYMBOL voltage 432 352 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 1V {fm} 0 0 90)
SYMBOL voltage 656 352 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value SINE(0 1V {fm} 0 0 0)
SYMBOL multiply -176 160 R0
SYMATTR InstName X1
SYMBOL multiply -176 32 M180
SYMATTR InstName X2
SYMBOL multiply -176 -128 R0
SYMATTR InstName X3
SYMBOL multiply -176 -256 M180
SYMATTR InstName X4
SYMBOL add -48 -128 R0
SYMATTR InstName X5
SYMBOL sub 16 -256 R0
SYMATTR InstName X6
SYMBOL multiply 304 -128 R0
SYMATTR InstName X7
SYMBOL multiply 304 -256 M180
SYMATTR InstName X8
SYMBOL add 432 -128 M180
SYMATTR InstName X9
SYMBOL sub 432 -256 R0
SYMATTR InstName X10
SYMBOL voltage -544 -240 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value SINE(0 1V {fs} 0 0 90)
SYMBOL voltage -544 48 R0
WINDOW 123 24 122 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V6
SYMATTR Value SINE(0 1V {fs} 0 0 180)
SYMBOL butterworth-lpf-7 160 -256 R0
WINDOW 39 -21 34 Left 0
SYMATTR InstName X11
SYMATTR SpiceLine fg={fg}
SYMBOL butterworth-lpf-7 160 -128 R0
WINDOW 39 -21 34 Left 0
SYMATTR InstName X12
SYMATTR SpiceLine fg={fg}
TEXT -562 402 Left 0 !.tran 0 12ms 2ms
TEXT 104 112 Left 0 !* SSB-receiver with 2.4 kHz bandwidth:\n.param  fm=1.5kHz  fg=1.2kHz\n* CW-receiver with 250 Hz bandwidth:\n* .param  fm=800Hz  fg=125Hz
TEXT 104 -16 Left 0 ;fa: tuning shift (adds to RF-mixer-freqency)\nfm: center frequency of demodulated signal\nfg: half receiver bandwidth
TEXT -560 -48 Left 0 !.param fs=+1300Hz
TEXT 104 64 Left 0 !.param fa=+1.0kHz
TEXT -560 240 Left 0 ;Input Signal according to a carrier which is\n1.3kHz above the the RF-mixer-frequency
TEXT -544 -416 Left 0 ;@Title\nSSB/CW-Receiver using I-Q-Demodulation with Fine-Tuning in the Audio-Frequency Range
TEXT -560 448 Left 0 ;@Author\nAndreas Czechanowski (DL4SDC) 2006-02-11