Version 4
SHEET 1 4584 1316
WIRE 608 -496 576 -496
WIRE 720 -496 688 -496
WIRE 848 -496 720 -496
WIRE 928 -496 896 -496
WIRE 1104 -496 1008 -496
WIRE 1104 -480 1104 -496
WIRE 576 -464 576 -496
WIRE 720 -464 720 -496
WIRE 896 -448 896 -496
WIRE 1040 -448 896 -448
WIRE 928 -400 896 -400
WIRE 1040 -400 1040 -448
WIRE 1040 -400 1008 -400
WIRE 1104 -384 1104 -400
WIRE 576 -368 576 -384
WIRE 720 -368 720 -384
WIRE 848 -352 848 -496
WIRE 896 -352 896 -400
WIRE 896 -352 848 -352
WIRE 1040 -352 896 -352
WIRE 928 -304 896 -304
WIRE 1040 -304 1040 -352
WIRE 1040 -304 1008 -304
WIRE 720 -272 720 -288
WIRE 896 -256 896 -304
FLAG 720 -272 0
FLAG 576 -368 0
FLAG 720 -384 S11
FLAG 1104 -384 0
FLAG 1104 -496 out
FLAG 896 -256 0
SYMBOL res 704 -384 R0
SYMATTR InstName R1
SYMATTR Value 1e6
SYMBOL voltage 576 -480 R0
WINDOW 3 24 104 Invisible 0
WINDOW 123 24 44 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value ""
SYMATTR Value2 AC 2
SYMATTR InstName V1
SYMBOL voltage 720 -480 R0
WINDOW 3 24 104 Invisible 0
WINDOW 123 24 44 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value ""
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMBOL res 592 -480 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 50
SYMBOL res 1088 -496 R0
WINDOW 3 34 11 Left 0
WINDOW 0 41 59 Left 0
SYMATTR Value 450
SYMATTR InstName R3
SYMBOL ind2 912 -480 R270
WINDOW 3 4 56 VBottom 0
WINDOW 0 32 56 VTop 0
SYMATTR Value {inductance}
SYMATTR InstName L1
SYMATTR Type ind
SYMBOL ind2 912 -384 R270
WINDOW 3 4 56 VBottom 0
WINDOW 0 32 56 VTop 0
SYMATTR Value {inductance}
SYMATTR InstName L2
SYMATTR Type ind
SYMBOL ind2 912 -288 R270
WINDOW 3 4 56 VBottom 0
WINDOW 0 32 56 VTop 0
SYMATTR Value {inductance}
SYMATTR InstName L3
SYMATTR Type ind
TEXT 904 -840 Left 0 !.ac lin 800 1e5 2e8
TEXT 576 -840 Left 0 ;TriFilarTransformer
TEXT 576 -800 Left 0 ;R. Campbell 2/18/10
TEXT 576 -768 Left 0 ;Bandpass Filter Design
TEXT 1088 -328 Left 0 ;note 450 ohm R
TEXT 848 -592 Left 0 !k1 L1 L2 L3 {coupling}
TEXT 904 -768 Left 0 !.param coupling .999
TEXT 904 -720 Left 0 !.param inductance 10uH
TEXT 904 -664 Left 0 !;step param inductance 5uH 15uH 5uH