Version 4
SHEET 1 1332 1748
WIRE 160 112 128 112
WIRE -656 176 -688 176
WIRE -544 176 -576 176
WIRE -448 176 -496 176
WIRE -400 176 -448 176
WIRE -288 176 -320 176
WIRE -240 176 -288 176
WIRE 128 208 128 112
WIRE 128 208 -80 208
WIRE -688 240 -688 176
WIRE -240 256 -240 176
WIRE -80 256 -80 208
WIRE 128 256 128 208
WIRE -496 272 -496 176
WIRE -80 384 -80 336
WIRE 128 384 128 320
WIRE 128 384 -80 384
WIRE 192 384 128 384
WIRE 192 400 192 384
WIRE -688 416 -688 320
WIRE -608 416 -688 416
WIRE -544 416 -544 176
WIRE -544 416 -608 416
WIRE -496 416 -496 336
WIRE -368 416 -496 416
WIRE -240 416 -240 336
WIRE -240 416 -368 416
WIRE -608 432 -608 416
WIRE -368 432 -368 416
FLAG -368 432 0
FLAG 192 400 0
FLAG 160 112 Vout
IOPIN 160 112 Out
FLAG -448 176 Vcap
FLAG -288 176 Vind
FLAG -608 432 0
SYMBOL cap -512 272 R0
SYMATTR InstName C1
SYMATTR Value {Cap1}
SYMBOL ind2 -256 240 R0
WINDOW 3 -5 80 Right 2
SYMATTR Value {PrimInd}
SYMATTR InstName L1
SYMBOL ind2 -64 240 M0
WINDOW 3 -5 63 Right 2
SYMATTR Value {SecInd}
SYMATTR InstName L2
SYMATTR SpiceLine Rser=7
SYMBOL cap 112 256 R0
SYMATTR InstName C2
SYMATTR Value {Cap2}
SYMBOL ind2 -304 160 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName L3
SYMATTR Value {IndL3}
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.325
SYMBOL ind2 -560 160 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName L4
SYMATTR Value {IndL3}
SYMATTR Type ind
SYMBOL current -688 240 R0
WINDOW 123 24 108 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName I1
SYMATTR Value ""
TEXT -704 88 Left 2 !.ac oct 3000000 50K 500k
TEXT -224 232 Left 2 !K1 L1 L2 1.
TEXT -576 136 Left 2 !K2 L3 L4 0.001
TEXT -432 232 Left 2 ;Antenna Loop
TEXT -56 272 Left 2 ;CT Secondary
TEXT -384 288 Left 2 ;CT primary
TEXT 248 -272 Left 2 !.MEAS Max Peak F2             FIND nothing AT nowhere\n.MEAS AC SigAvg AVG mag(V(Vout))\n.MEAS AC SigMax1 MAX mag(V(Vout)) TARG mag(V(Vout))=SigAvg FALL=1\n.MEAS AC SigLvl1 FIND mag(V(Vout)) AT 60000\n.MEAS AC SigDelta1 PARAM SigLvl1/SigMax1\n.MEAS AC CenterFreq1 WHEN mag(V(Vout))=SigMax1 CROSS=1\n.MEAS AC BandWidth1 targ mag(V(Vout))=SigMax1/sqrt(2) fall=1\n+ trig mag(V(Vout))=SigMax1/sqrt(2) rise=1\n.MEAS AC Q1 PARAM pow(10,CenterFreq1/(BandWidth1*20))\n \n.MEAS Max Peak F2             FIND nothing AT nowhere\n; find the last Vout peak and call it "SigMax2"\n.MEAS AC SigMax2 MAX mag(V(Vout)) TRIG mag(V(Vout))=SigAvg RISE=LAST\n;.MEAS AC SigLvl2 FIND mag(V(Vout)) AT 60000\n;.MEAS AC SigDelta2 PARAM SigLvl2/SigMax2\n.MEAS AC CenterFreq2 WHEN mag(V(Vout))=SigMax2\n.MEAS AC BandWidth2 trig mag(V(Vout))=SigMax2/sqrt(2) rise=1\n+ targ mag(V(Vout))=SigMax2/sqrt(2) fall=last\n.MEAS AC Q2 PARAM pow(10,CenterFreq2/(BandWidth2*20))\n \n.MEAS Min Peak F3             FIND nothing AT nowhere\n; find the Vcap min peak and call it "SigMin3"\n.MEAS AC SigMin3 MIN mag(V(Vcap)) \n.MEAS AC CenterFreq3 WHEN mag(V(Vcap))=SigMin3\n.MEAS AC BandWidth3 TRIG mag(V(Vcap))=SigMin3*sqrt(2) FALL=1\n+ TARG mag(V(Vcap))=SigMin3*sqrt(2) RISE=last\n.MEAS AC Q3 PARAM pow(10,CenterFreq3/(BandWidth3*20))\n \n.MEAS Parameter Calculations  FIND nothing AT nowhere\n.param PrimTurns = 4\n.param SecTurns = 100\n.PARAM  TurnsRatio = SecTurns/PrimTurns\n.MEAS T PARAM  pow(10, TurnsRatio/20)\n.PARAM  SecInd = 30m\n.PARAM  PrimInd = SecInd / (TurnsRatio**2)\n.MEAS P PARAM  pow(10, PrimInd/20)\n.MEAS S PARAM  pow(10, SecInd/20)\n.PARAM IndL3 = 89.42µ\n.PARAM Cap1 = 50.42n\n.PARAM Cap2 = 10p\n.PARAM F1 = 1/(2 * pi * sqrt((Cap1 + (Cap2 * (TurnsRatio**2))) * (IndL3 + PrimInd) ))\n.MEAS F1-kHz PARAM pow(10, F1/20000)\n.PARAM F2 = 1/(2 * pi * sqrt(Cap1 * IndL3) )\n.MEAS F2-MHz PARAM pow(10, F2/20000000)\n.PARAM F3 = 1/(2 * pi * sqrt(Cap2 * SecInd) )\n.MEAS F3-MHz PARAM pow(10, F3/20000000)