Version 4
SHEET 1 1160 680
WIRE 736 -96 688 -96
WIRE 992 -96 944 -96
WIRE 208 -64 -64 -64
WIRE 304 -64 208 -64
WIRE 560 -64 448 -64
WIRE -64 -48 -64 -64
WIRE 688 -48 688 -96
WIRE 944 -48 944 -96
WIRE 208 0 80 0
WIRE 304 0 208 0
WIRE 560 0 448 0
WIRE 80 16 80 0
WIRE -64 48 -64 32
WIRE 688 64 688 32
WIRE 944 64 944 32
WIRE 80 112 80 96
WIRE 736 112 688 112
WIRE 688 144 688 112
WIRE -16 224 -64 224
WIRE -64 256 -64 224
WIRE 688 256 688 224
WIRE -64 352 -64 336
WIRE -16 400 -64 400
WIRE -64 432 -64 400
WIRE -64 528 -64 512
FLAG -64 48 0
FLAG 80 112 0
FLAG 560 -64 I0
FLAG 560 0 Q0
FLAG 688 256 0
FLAG 688 64 0
FLAG 944 64 0
FLAG -64 352 0
FLAG -64 528 0
FLAG -16 224 b0
FLAG -16 400 b1
FLAG 736 -96 im
FLAG 736 112 qm
FLAG 992 -96 iqm
IOPIN 992 -96 Out
FLAG 208 0 AM
FLAG 208 -64 FM
SYMBOL voltage 80 0 R0
SYMATTR InstName V1
SYMATTR Value 1
SYMBOL SpecialFunctions\\modulate2 304 -64 R0
WINDOW 39 -35 135 Left 0
SYMATTR InstName A1
SYMATTR SpiceLine space={F0} mark={F0*2}
SYMBOL voltage -64 -64 R0
SYMATTR InstName V3
SYMATTR Value 0
SYMBOL bv 688 -64 R0
SYMATTR InstName B1
SYMATTR Value V=V(I0)*V(b0)
SYMBOL bv 688 128 R0
SYMATTR InstName B2
SYMATTR Value V=V(Q0)*V(b1)
SYMBOL bv 944 -64 R0
SYMATTR InstName B3
SYMATTR Value V=V(qm)+V(im)
SYMBOL voltage -64 240 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PWL time_scale_factor={T} (0 1, 1 1, 1.0001 -1, 2 -1, 3 -1, 3.0001 1, 4 1)
SYMBOL voltage -64 416 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value PWL time_scale_factor={T} (0 1, 1 1, 2, 1, 2.0001 -1, 3 -1, 4 -1, 4.0001 1)
TEXT -64 -176 Left 0 !.tran 0 40u 0 5n
TEXT 208 112 Left 0 ;freq = space + (mark-space)*FM
TEXT 296 -184 Left 0 !.param F0=1e6
TEXT 296 -160 Left 0 !.param T=8/F0
TEXT -64 -152 Left 0 !.options plotwinsize=0
TEXT 952 -136 Left 0 ;Output