Version 4 SHEET 1 3200 1748 WIRE 560 -864 464 -864 WIRE 752 -864 624 -864 WIRE -288 -800 -496 -800 WIRE -128 -800 -208 -800 WIRE -272 -752 -384 -752 WIRE 464 -752 464 -864 WIRE 560 -752 464 -752 WIRE 752 -752 752 -864 WIRE 752 -752 640 -752 WIRE -288 -688 -496 -688 WIRE -128 -688 -128 -800 WIRE -128 -688 -208 -688 WIRE -272 -640 -384 -640 WIRE -128 -624 -128 -688 WIRE -32 -624 -128 -624 WIRE 208 -624 96 -624 WIRE 336 -624 208 -624 WIRE 464 -624 464 -752 WIRE 464 -624 416 -624 WIRE 560 -624 464 -624 WIRE 752 -608 752 -752 WIRE 752 -608 624 -608 WIRE 816 -608 752 -608 WIRE 208 -592 208 -624 WIRE 560 -592 528 -592 WIRE -288 -576 -496 -576 WIRE -128 -576 -128 -624 WIRE -128 -576 -208 -576 WIRE 528 -560 528 -592 WIRE -272 -528 -336 -528 WIRE 208 -512 208 -528 WIRE -288 -464 -496 -464 WIRE -128 -464 -128 -576 WIRE -128 -464 -208 -464 WIRE -816 -432 -928 -432 WIRE -672 -432 -736 -432 WIRE -272 -416 -384 -416 WIRE -1264 -368 -1440 -368 WIRE -1088 -368 -1184 -368 WIRE -1440 -352 -1440 -368 WIRE -880 -352 -928 -352 WIRE -880 -320 -880 -352 WIRE -816 -272 -928 -272 WIRE -672 -272 -736 -272 WIRE -1088 -256 -1088 -288 WIRE 544 -240 448 -240 WIRE 736 -240 608 -240 WIRE -288 -176 -496 -176 WIRE -128 -176 -208 -176 WIRE -272 -128 -384 -128 WIRE 448 -128 448 -240 WIRE 544 -128 448 -128 WIRE 736 -128 736 -240 WIRE 736 -128 624 -128 WIRE -288 -64 -496 -64 WIRE -128 -64 -128 -176 WIRE -128 -64 -208 -64 WIRE -272 -16 -384 -16 WIRE -128 0 -128 -64 WIRE -32 0 -128 0 WIRE 192 0 80 0 WIRE 320 0 192 0 WIRE 448 0 448 -128 WIRE 448 0 400 0 WIRE 544 0 448 0 WIRE 736 16 736 -128 WIRE 736 16 608 16 WIRE 800 16 736 16 WIRE 192 32 192 0 WIRE 544 32 512 32 WIRE -288 48 -496 48 WIRE -128 48 -128 0 WIRE -128 48 -208 48 WIRE 512 64 512 32 WIRE -272 96 -336 96 WIRE 192 112 192 96 WIRE -288 160 -496 160 WIRE -128 160 -128 48 WIRE -128 160 -208 160 WIRE -272 208 -384 208 WIRE -624 800 -736 800 WIRE 192 800 80 800 WIRE -736 832 -736 800 WIRE 80 832 80 800 WIRE 1648 832 1648 816 WIRE 1648 832 1568 832 WIRE 1648 848 1648 832 WIRE 1568 864 1568 832 WIRE -624 992 -736 992 WIRE 192 992 80 992 WIRE -736 1024 -736 992 WIRE 80 1024 80 992 FLAG -224 -128 0 FLAG -224 -16 0 FLAG -224 96 0 FLAG -224 208 0 FLAG -1440 -352 0 FLAG 1648 736 +5V FLAG 1568 864 0 FLAG 1648 928 -5V FLAG -384 -128 V_0_deg FLAG -384 -16 V_90_deg FLAG -336 96 V_180_deg FLAG -384 208 V_270_deg FLAG -736 912 0 FLAG -624 800 V_0_deg FLAG -736 1104 0 FLAG -624 992 V_90_deg FLAG 80 912 0 FLAG 192 800 V_180_deg FLAG 80 1104 0 FLAG 192 992 V_270_deg FLAG 208 -512 0 FLAG -1088 -256 0 FLAG -224 -752 0 FLAG -224 -640 0 FLAG -224 -528 0 FLAG -224 -416 0 FLAG -384 -752 V_0_deg FLAG -384 -640 V_90_deg FLAG -336 -528 V_180_deg FLAG -384 -416 V_270_deg FLAG -496 -464 P FLAG -496 48 P FLAG -496 -800 M FLAG -496 -64 M FLAG -32 -624 1A FLAG 96 -624 1A FLAG -32 0 2A FLAG -672 -432 P FLAG -672 -272 M FLAG 192 112 0 FLAG 576 -16 +5V FLAG 576 48 -5V FLAG 512 64 0 FLAG 80 0 2A FLAG 816 -608 I FLAG 800 16 Q FLAG -880 -320 0 FLAG 592 -640 +5V FLAG 592 -576 -5V FLAG 528 -560 0 SYMBOL sw -192 -176 M270 SYMATTR InstName S7 SYMATTR Value MYSW SYMBOL sw -192 -64 M270 SYMATTR InstName S2 SYMATTR Value MYSW SYMBOL sw -192 48 M270 SYMATTR InstName S4 SYMATTR Value MYSW SYMBOL sw -192 160 M270 SYMATTR InstName S6 SYMATTR Value MYSW SYMBOL voltage -1168 -368 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 118 56 VBottom 2 WINDOW 39 90 64 VBottom 2 SYMATTR InstName V3 SYMATTR Value SINE(0 5u {RF_Freq}) SYMATTR Value2 AC 1 SYMATTR SpiceLine Rser=50 SYMBOL voltage 1648 720 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V4 SYMATTR Value 5 SYMBOL voltage 1648 832 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V5 SYMATTR Value 5 SYMBOL voltage -736 816 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value PULSE(0 1 0 0.001p 0.001p {SW_time} {4*SW_time}) SYMBOL voltage -736 1008 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PULSE(0 1 {SW_time} 0.001p 0.001p {SW_time} {4*SW_time}) SYMBOL voltage 80 816 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V6 SYMATTR Value PULSE(0 1 {2*SW_time} 0.001p 0.001p {SW_time} {4*SW_time}) SYMBOL voltage 80 1008 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V7 SYMATTR Value PULSE(0 1 {3*SW_time} 0.001p 0.001p {SW_time} {4*SW_time}) SYMBOL cap 224 -528 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C1 SYMATTR Value {C_Sample} SYMBOL res 432 -640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10 SYMBOL ind2 -912 -336 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L1 SYMATTR Value 0.044µ SYMATTR Type ind SYMBOL ind2 -912 -256 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L2 SYMATTR Value 0.044 SYMATTR Type ind SYMBOL ind2 -1104 -384 R0 SYMATTR InstName L3 SYMATTR Value 0.18 SYMATTR Type ind SYMBOL sw -192 -800 M270 SYMATTR InstName S1 SYMATTR Value MYSW SYMBOL sw -192 -688 M270 SYMATTR InstName S3 SYMATTR Value MYSW SYMBOL sw -192 -576 M270 SYMATTR InstName S5 SYMATTR Value MYSW SYMBOL sw -192 -464 M270 SYMATTR InstName S8 SYMATTR Value MYSW SYMBOL res -720 -448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 10 SYMBOL res -720 -288 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 10 SYMBOL cap 208 96 R180 WINDOW 0 24 56 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C3 SYMATTR Value {C_Sample} SYMBOL res 640 -144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 5k SYMBOL Opamps\\UniversalOpamp2 576 16 R0 SYMATTR InstName U2 SYMATTR SpiceModel level.1 SYMATTR Value2 Avol=1Meg GBW=100Meg Slew=100Meg SYMBOL res 416 -16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10 SYMBOL cap 608 -256 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 220p SYMBOL res 656 -768 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 5k SYMBOL Opamps\\UniversalOpamp2 592 -608 R0 SYMATTR InstName U1 SYMATTR SpiceModel level.1 SYMATTR Value2 Avol=1Meg GBW=100Meg Slew=100Meg SYMBOL cap 624 -880 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 220p TEXT -760 384 Left 2 !.model MYSW SW(Vt=0.9 Vh=0 Ron=1 Roff=100G) TEXT 392 512 Left 2 !.tran 0 0.25m 40u 5m\n;.ac dec 10 10 1000Meg;\n;.noise V(V_outQ) V3 dec 10 10 100meg\n;.op TEXT -760 424 Left 2 !.param RF_freq=14.2Meg LO_freq={RF_freq - Audio_freq} LO_period={1/LO_freq} SW_time={LO_period/4} TEXT 256 -408 Left 2 !.param C_Sample=0.047u TEXT -776 688 Left 4 ;Signals for voltage-controlled switches \nused to simulate our multiplexer. TEXT 1048 616 Left 4 ;Power Connections TEXT -1312 -448 Left 2 ;RF signal in TEXT -416 -992 Left 4 ;Multiplexer TEXT 384 472 Left 4 ;Simulation Control TEXT 392 656 Left 2 !;step oct param Audio_freq 1000 10000 1 TEXT 392 624 Left 2 !.param Audio_freq 10000 TEXT -584 -800 Left 2 ;1B1 TEXT -584 -688 Left 2 ;1B2 TEXT -584 -576 Left 2 ;1B3 TEXT -584 -464 Left 2 ;1B4 TEXT -576 -176 Left 2 ;2B1 TEXT -576 -64 Left 2 ;2B2 TEXT -576 48 Left 2 ;2B3 TEXT -576 160 Left 2 ;2B4 TEXT -1088 -528 Left 2 !K1 L1 L2 L3 1 TEXT -1240 -568 Left 2 ;8 turns primary, 4 turns bifilar secondary TEXT -1432 -912 Left 2 ;Design notes: Due to the C_samlple: BW = 1/(4 pi RC_sample) TEXT -1016 -880 Left 2 ;where R = ((50/4)+10)||10 TEXT -1016 -840 Left 2 ;Gain = -5k/(10+10 + 50/4) TEXT -1008 -808 Left 2 ;Noise Figure: 9.4 dB TEXT -1440 -776 Left 2 ;NF calculated from: http://dicks-website.eu/noisecalculator/index.html