* SPICE netlist
C4 N004 N003 100nF
R6 N001 N004 {R}
R9 N007 N010 {R}
C2 N010 v1 41nF
R1 N005 N001 {(K1- 1)* R}
C3 N002 N005 {Q/R}
R2 v1 N002 {R}
R3 N006 v1 {(K1- 1)* R}
R10 N006 0 {R}
R4 N011 N007 {(K2- 1)* R}
C1 N009 N011 {L2/R**2}
R5 N008 N009 {R}
R7 N012 N008 {(K2- 1)* R}
R8 N012 0 {R}
XU4 N002 N001 v1 opamp Aol=100K GBW=10000Meg ;pnba invin)noninvin)out
XU2 N002 N006 N005 opamp Aol=100K GBW=10000Meg ;pnba invin)noninvin)out
XU1 N009 N012 N011 opamp Aol=100K GBW=10000Meg ;pnba invin)noninvin)out
XU3 N009 N007 N008 opamp Aol=100K GBW=10000Meg ;pnba invin)noninvin)out
V1 N003 0 AC 1 0
.ac dec 100 100 1000K
.param R=1K
.param K1=2 K2=0.5
.param L1=71mHy L2=29.26mHy

* LTspice schematic (.asc)
Version 4
SHEET 1 1024 896
WIRE 144 -448 -208 -448
WIRE 288 -432 208 -432
WIRE 368 -432 288 -432
WIRE 144 -416 112 -416
WIRE -400 -288 -512 -288
WIRE -320 -288 -336 -288
WIRE -208 -288 -208 -448
WIRE -208 -288 -240 -288
WIRE -128 -288 -208 -288
WIRE -32 -288 -48 -288
WIRE 0 -288 -32 -288
WIRE 112 -288 112 -416
WIRE 112 -288 64 -288
WIRE 144 -288 112 -288
WIRE 288 -288 288 -432
WIRE 288 -288 224 -288
WIRE 432 -288 368 -288
WIRE 512 -288 432 -288
WIRE -512 -240 -512 -288
WIRE 512 -240 512 -288
WIRE 112 -160 112 -288
WIRE 112 -160 80 -160
WIRE -32 -144 -32 -288
WIRE 16 -144 -32 -144
WIRE -512 -128 -512 -160
WIRE 432 -128 432 -288
WIRE 432 -128 80 -128
WIRE 512 -128 512 -160
WIRE 144 128 -208 128
WIRE 288 144 208 144
WIRE 368 144 288 144
WIRE 144 160 112 160
WIRE -464 288 -480 288
WIRE -400 288 -464 288
WIRE -320 288 -336 288
WIRE -208 288 -208 128
WIRE -208 288 -240 288
WIRE -128 288 -208 288
WIRE -32 288 -48 288
WIRE 0 288 -32 288
WIRE 112 288 112 160
WIRE 112 288 64 288
WIRE 144 288 112 288
WIRE 288 288 288 144
WIRE 288 288 224 288
WIRE 432 288 368 288
WIRE 512 288 432 288
WIRE 512 336 512 288
WIRE 112 416 112 288
WIRE 112 416 80 416
WIRE -32 432 -32 288
WIRE 16 432 -32 432
WIRE 432 448 432 288
WIRE 432 448 80 448
WIRE 512 448 512 416
FLAG 512 -128 0
FLAG 368 -432 v1
FLAG 512 448 0
FLAG -464 288 v1
FLAG -512 -128 0
SYMBOL cap -336 -304 R90
SYMATTR InstName C4
SYMATTR Value 100nF
SYMBOL res -224 -304 R90
SYMATTR InstName R6
SYMATTR Value {R}
SYMBOL res -224 272 R90
SYMATTR InstName R9
SYMATTR Value {R}
SYMBOL cap -336 272 R90
SYMATTR InstName C2
SYMATTR Value 41nF
SYMBOL res -32 -304 R90
SYMATTR InstName R1
SYMATTR Value {(K1- 1)* R}
SYMBOL cap 64 -304 R90
SYMATTR InstName C3
SYMATTR Value {Q/R}
SYMBOL res 240 -304 R90
SYMATTR InstName R2
SYMATTR Value {R}
SYMBOL res 384 -304 R90
SYMATTR InstName R3
SYMATTR Value {(K1- 1)* R}
SYMBOL res 496 -256 R0
SYMATTR InstName R10
SYMATTR Value {R}
SYMBOL res -32 272 R90
SYMATTR InstName R4
SYMATTR Value {(K2- 1)* R}
SYMBOL cap 64 272 R90
SYMATTR InstName C1
SYMATTR Value {L2/R**2}
SYMBOL res 240 272 R90
SYMATTR InstName R5
SYMATTR Value {R}
SYMBOL res 384 272 R90
SYMATTR InstName R7
SYMATTR Value {(K2- 1)* R}
SYMBOL res 496 320 R0
SYMATTR InstName R8
SYMATTR Value {R}
SYMBOL OpAmps\\opamp 176 -368 M180
SYMATTR InstName U4
SYMATTR SpiceLine2 GBW=10000Meg
SYMBOL OpAmps\\opamp 48 -208 M0
SYMATTR InstName U2
SYMATTR SpiceLine2 GBW=10000Meg
SYMBOL OpAmps\\opamp 48 368 M0
SYMATTR InstName U1
SYMATTR SpiceLine2 GBW=10000Meg
SYMBOL OpAmps\\opamp 176 208 M180
SYMATTR InstName U3
SYMATTR SpiceLine2 GBW=10000Meg
SYMBOL voltage -512 -256 R0
SYMATTR InstName V1
SYMATTR Value ""
SYMATTR Value2 AC 1 0