* SPICE netlist
V1 Vi 0 AC 1 0
Rb N009 Vi {Q1*R/a}
Rc 0 N009 {Q1*R/(1-a)}
R3 N010 Vo1 {R}
R4 Vo1 N012 {R}
R5 N012 0 {R}
C1 N009 0 {1/R/w01}
C2 N010 N011 {1/R/w01}
R1 N011 N009 {R}
XU1 N010 N012 N011 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
XU2 N010 N009 Vo1 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
Rb2 N001 Vo1 {Q2*R/b}
Rc2 0 N001 {Q2*R/(1-b)}
R3_b N003 Vo2 {2*R}
R4_b Vo2 N006 {2*R}
R5_b N006 0 {R}
C3 N001 0 {1/R/w02}
C2_b N003 N005 {1/R/w02}
R1_b N005 N001 {R}
XU3 N003 N006 N005 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
XU4 N003 N001 Vo2 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
Rb3 N002 Vo2 {Q3*R/d}
Rc3 0 N002 {Q3*R/(1-d)}
R3_c N004 Vo3 {4*R}
R4_c Vo3 N008 {4*R}
R5_c N008 0 {R}
C5 N002 0 {1/R/w03}
C2_c N004 N007 {1/R/w03}
R1_c N007 N002 {R}
XU5 N004 N008 N007 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
XU6 N004 N002 Vo3 opamp Aol=100K GBW=10Meg ;pnba invin)noninvin)out
.param R=1 C=1 w0=2*pi
.param a=0.6035 b=0.684 d=0.957
.param Q1=7.981 w01= 1*w0
.param Q2=16.01 w02= 1.1077*w0
.param Q3=16.01 w03= 0.903*w0
.ac dec 1000 0.1 10

* LTspice schematic (.asc)
Version 4
SHEET 1 1968 864
WIRE -360 -432 -680 -432
WIRE 664 -432 344 -432
WIRE -248 -416 -296 -416
WIRE 88 -416 -248 -416
WIRE 776 -416 728 -416
WIRE -360 -400 -408 -400
WIRE 664 -400 616 -400
WIRE -920 -256 -936 -256
WIRE -776 -256 -840 -256
WIRE -680 -256 -680 -432
WIRE -680 -256 -776 -256
WIRE -648 -256 -680 -256
WIRE -536 -256 -568 -256
WIRE -504 -256 -536 -256
WIRE -408 -256 -408 -400
WIRE -408 -256 -440 -256
WIRE -360 -256 -408 -256
WIRE -248 -256 -248 -416
WIRE -248 -256 -280 -256
WIRE -216 -256 -248 -256
WIRE -104 -256 -136 -256
WIRE -40 -256 -104 -256
WIRE 88 -256 88 -416
WIRE 104 -256 88 -256
WIRE 248 -256 184 -256
WIRE 344 -256 344 -432
WIRE 344 -256 248 -256
WIRE 376 -256 344 -256
WIRE 488 -256 456 -256
WIRE 520 -256 488 -256
WIRE 616 -256 616 -400
WIRE 616 -256 584 -256
WIRE 664 -256 616 -256
WIRE 776 -256 776 -416
WIRE 776 -256 744 -256
WIRE 808 -256 776 -256
WIRE 920 -256 888 -256
WIRE 984 -256 920 -256
WIRE -776 -192 -776 -256
WIRE -680 -192 -680 -256
WIRE -40 -192 -40 -256
WIRE 248 -192 248 -256
WIRE 344 -192 344 -256
WIRE 984 -192 984 -256
WIRE -408 -144 -408 -256
WIRE -408 -144 -440 -144
WIRE 616 -144 616 -256
WIRE 616 -144 584 -144
WIRE -536 -128 -536 -256
WIRE -504 -128 -536 -128
WIRE 488 -128 488 -256
WIRE 520 -128 488 -128
WIRE -104 -112 -104 -256
WIRE -104 -112 -440 -112
WIRE 920 -112 920 -256
WIRE 920 -112 584 -112
WIRE -776 -48 -776 -112
WIRE -680 -48 -680 -128
WIRE -680 -48 -776 -48
WIRE -40 -48 -40 -112
WIRE -40 -48 -680 -48
WIRE 248 -48 248 -112
WIRE 344 -48 344 -128
WIRE 344 -48 248 -48
WIRE 984 -48 984 -112
WIRE 984 -48 344 -48
WIRE -936 0 -936 -256
WIRE -248 0 -936 0
WIRE -360 48 -680 48
WIRE -248 64 -248 0
WIRE -248 64 -296 64
WIRE -360 80 -408 80
WIRE -920 224 -984 224
WIRE -776 224 -840 224
WIRE -680 224 -680 48
WIRE -680 224 -776 224
WIRE -648 224 -680 224
WIRE -536 224 -568 224
WIRE -504 224 -536 224
WIRE -408 224 -408 80
WIRE -408 224 -440 224
WIRE -360 224 -408 224
WIRE -248 224 -248 64
WIRE -248 224 -280 224
WIRE -216 224 -248 224
WIRE -104 224 -136 224
WIRE -40 224 -104 224
WIRE -984 288 -984 224
WIRE -776 288 -776 224
WIRE -680 288 -680 224
WIRE -40 288 -40 224
WIRE -408 336 -408 224
WIRE -408 336 -440 336
WIRE -536 352 -536 224
WIRE -504 352 -536 352
WIRE -104 368 -104 224
WIRE -104 368 -440 368
WIRE -984 432 -984 368
WIRE -776 432 -776 368
WIRE -776 432 -984 432
WIRE -680 432 -680 352
WIRE -680 432 -776 432
WIRE -40 432 -40 368
WIRE -40 432 -680 432
FLAG -984 432 0
FLAG -776 -48 0
FLAG 248 -48 0
FLAG -248 64 Vo1
IOPIN 720 -64 Out
FLAG 88 -416 Vo2
IOPIN 1056 -544 Out
FLAG 776 -416 Vo3
IOPIN 1744 -544 Out
FLAG -984 224 Vi
IOPIN -16 96 In
SYMBOL voltage -984 272 R0
SYMATTR InstName V1
SYMATTR Value ""
SYMATTR Value2 AC 1 0
SYMBOL res -824 208 R90
SYMATTR InstName Rb
SYMATTR Value {Q1*R/a}
SYMBOL res -760 384 R180
SYMATTR InstName Rc
SYMATTR Value {Q1*R/(1-a)}
SYMBOL res -376 240 R270
SYMATTR InstName R3
SYMATTR Value {R}
SYMBOL res -232 240 R270
SYMATTR InstName R4
SYMATTR Value {R}
SYMBOL res -56 272 R0
SYMATTR InstName R5
SYMATTR Value {R}
SYMBOL cap -696 288 R0
SYMATTR InstName C1
SYMATTR Value {1/R/w01}
SYMBOL cap -440 208 R90
SYMATTR InstName C2
SYMATTR Value {1/R/w01}
SYMBOL res -552 208 R90
SYMATTR InstName R1
SYMATTR Value {R}
SYMBOL OpAmps\\opamp -472 288 M0
SYMATTR InstName U1
SYMBOL OpAmps\\opamp -328 128 M180
SYMATTR InstName U2
SYMBOL res -824 -272 R90
SYMATTR InstName Rb2
SYMATTR Value {Q2*R/b}
SYMBOL res -760 -96 R180
SYMATTR InstName Rc2
SYMATTR Value {Q2*R/(1-b)}
SYMBOL res -376 -240 R270
SYMATTR InstName R3_b
SYMATTR Value {2*R}
SYMBOL res -232 -240 R270
SYMATTR InstName R4_b
SYMATTR Value {2*R}
SYMBOL res -56 -208 R0
SYMATTR InstName R5_b
SYMATTR Value {R}
SYMBOL cap -696 -192 R0
SYMATTR InstName C3
SYMATTR Value {1/R/w02}
SYMBOL cap -440 -272 R90
SYMATTR InstName C2_b
SYMATTR Value {1/R/w02}
SYMBOL res -552 -272 R90
SYMATTR InstName R1_b
SYMATTR Value {R}
SYMBOL OpAmps\\opamp -472 -192 M0
SYMATTR InstName U3
SYMBOL OpAmps\\opamp -328 -352 M180
SYMATTR InstName U4
SYMBOL res 200 -272 R90
SYMATTR InstName Rb3
SYMATTR Value {Q3*R/d}
SYMBOL res 264 -96 R180
SYMATTR InstName Rc3
SYMATTR Value {Q3*R/(1-d)}
SYMBOL res 648 -240 R270
SYMATTR InstName R3_c
SYMATTR Value {4*R}
SYMBOL res 792 -240 R270
SYMATTR InstName R4_c
SYMATTR Value {4*R}
SYMBOL res 968 -208 R0
SYMATTR InstName R5_c
SYMATTR Value {R}
SYMBOL cap 328 -192 R0
SYMATTR InstName C5
SYMATTR Value {1/R/w03}
SYMBOL cap 584 -272 R90
SYMATTR InstName C2_c
SYMATTR Value {1/R/w03}
SYMBOL res 472 -272 R90
SYMATTR InstName R1_c
SYMATTR Value {R}
SYMBOL OpAmps\\opamp 552 -192 M0
SYMATTR InstName U5
SYMBOL OpAmps\\opamp 696 -352 M180
SYMATTR InstName U6