* SPICE netlist
C3a N003 0 15p
C1 N002 N003 2.2p
RLoad s21 0 50
R3 0 s11 1e9
L1 N002 N003 5.6n
C3b s21 0 8.2p
Cin Vin 0 15p
L2 N003 s21 15n
C3 N001 0 100n
L3 N001 Vin 22n
R1 N004 Vin 50
V1 N004 0 AC 2
V2 Vin s11 AC 1
C2 Vin N002 15p
C4 N006 0 15p
C5 N005 N006 2.2p
RLoad1 N008 0 50
L4 N005 N006 15n
C6 N008 0 8.2p
Cin1 RFIO 0 15p
L5 N006 N008 15n
C7 N001 0 100n
L6 N001 RFIO 22n
C8 RFIO N005 15p
R2 0 N009 1e9
R4 N007 RFIO 50
V3 N007 0 AC 2
V4 RFIO N009 AC 1
.AC dec 10000 100k 100G

* LTspice schematic (.asc)
Version 4
SHEET 1 1552 1232
WIRE -280 -616 -344 -616
WIRE -280 -600 -280 -616
WIRE -280 -520 -280 -536
WIRE -344 -472 -344 -616
WIRE -280 -472 -344 -472
WIRE -152 -472 -200 -472
WIRE 136 -472 88 -472
WIRE 264 -472 200 -472
WIRE -696 -328 -776 -328
WIRE -568 -328 -616 -328
WIRE -488 -328 -568 -328
WIRE -360 -328 -376 -328
WIRE -152 -328 -152 -472
WIRE -152 -328 -360 -328
WIRE -8 -328 -152 -328
WIRE 24 -328 -8 -328
WIRE 88 -328 88 -472
WIRE 88 -328 56 -328
WIRE 120 -328 88 -328
WIRE 264 -328 264 -472
WIRE 264 -328 200 -328
WIRE 408 -328 264 -328
WIRE 536 -328 488 -328
WIRE 712 -328 536 -328
WIRE 776 -328 712 -328
WIRE -776 -312 -776 -328
WIRE -568 -312 -568 -328
WIRE -8 -280 -8 -328
WIRE 264 -280 264 -328
WIRE 536 -280 536 -328
WIRE 712 -280 712 -328
WIRE -568 -216 -568 -232
WIRE -568 -216 -664 -216
WIRE -568 -200 -568 -216
WIRE -776 -104 -776 -232
WIRE -568 -104 -568 -120
WIRE -8 -72 -8 -216
WIRE 264 -72 264 -216
WIRE 536 -72 536 -216
WIRE 712 -72 712 -200
WIRE -344 72 -344 -472
WIRE -280 72 -344 72
WIRE -280 88 -280 72
WIRE -280 168 -280 152
WIRE -344 216 -344 72
WIRE -280 216 -344 216
WIRE -152 216 -200 216
WIRE 136 216 88 216
WIRE 264 216 200 216
WIRE -696 360 -776 360
WIRE -568 360 -616 360
WIRE -488 360 -568 360
WIRE -360 360 -376 360
WIRE -152 360 -152 216
WIRE -152 360 -360 360
WIRE -8 360 -152 360
WIRE 24 360 -8 360
WIRE 88 360 88 216
WIRE 88 360 56 360
WIRE 120 360 88 360
WIRE 264 360 264 216
WIRE 264 360 200 360
WIRE 408 360 264 360
WIRE 536 360 488 360
WIRE 712 360 536 360
WIRE 776 360 712 360
WIRE -776 376 -776 360
WIRE -568 376 -568 360
WIRE -8 408 -8 360
WIRE 264 408 264 360
WIRE 536 408 536 360
WIRE 712 408 712 360
WIRE -568 488 -568 456
WIRE -776 584 -776 456
WIRE -568 584 -568 568
WIRE -8 616 -8 472
WIRE 264 616 264 472
WIRE 536 616 536 472
WIRE 712 616 712 488
FLAG 264 -72 0
FLAG 712 -72 0
FLAG -776 -104 0
FLAG 536 -72 0
FLAG -8 -72 0
FLAG -488 -328 Vin
FLAG -360 -328 Vin
FLAG -280 -520 0
FLAG -568 -104 0
FLAG -664 -216 s11
FLAG 776 -328 s21
FLAG 264 616 0
FLAG 712 616 0
FLAG 536 616 0
FLAG -8 616 0
FLAG -360 360 RFIO
FLAG -280 168 0
FLAG -776 584 0
FLAG -488 360 RFIO
FLAG -568 584 0
SYMBOL cap 248 -280 R0
SYMATTR InstName C3a
SYMATTR Value 15p
SYMBOL cap 136 -456 R270
SYMATTR InstName C1
SYMATTR Value 2.2p
SYMBOL res 696 -296 R0
SYMATTR InstName Load
SYMATTR Value 50
SYMBOL res -552 -104 R180
SYMATTR InstName R3
SYMATTR Value 1e9
SYMBOL ind 104 -312 R270
SYMATTR InstName L1
SYMATTR Value 5.6n
SYMBOL cap 520 -280 R0
SYMATTR InstName C3b
SYMATTR Value 8.2p
SYMBOL cap -24 -280 R0
SYMATTR InstName Cin
SYMATTR Value 15p
SYMBOL ind 392 -312 R270
SYMATTR InstName L2
SYMATTR Value 15n
SYMBOL cap -296 -600 R0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL ind -296 -456 R270
SYMATTR InstName L3
SYMATTR Value 22n
SYMBOL res -712 -312 R270
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL voltage -776 -328 R0
SYMATTR InstName V1
SYMATTR Value ""
SYMATTR Value2 AC 2
SYMBOL voltage -568 -328 R0
SYMATTR InstName V2
SYMATTR Value ""
SYMATTR Value2 AC 1
SYMBOL cap 24 -312 R270
SYMATTR InstName C2
SYMATTR Value 15p
SYMBOL cap 248 408 R0
SYMATTR InstName C4
SYMATTR Value 15p
SYMBOL cap 136 232 R270
SYMATTR InstName C5
SYMATTR Value 2.2p
SYMBOL res 696 392 R0
SYMATTR InstName Load1
SYMATTR Value 50
SYMBOL ind 104 376 R270
SYMATTR InstName L4
SYMATTR Value 15n
SYMBOL cap 520 408 R0
SYMATTR InstName C6
SYMATTR Value 8.2p
SYMBOL cap -24 408 R0
SYMATTR InstName Cin1
SYMATTR Value 15p
SYMBOL ind 392 376 R270
SYMATTR InstName L5
SYMATTR Value 15n
SYMBOL cap -296 88 R0
SYMATTR InstName C7
SYMATTR Value 100n
SYMBOL ind -296 232 R270
SYMATTR InstName L6
SYMATTR Value 22n
SYMBOL cap 24 376 R270
SYMATTR InstName C8
SYMATTR Value 15p
SYMBOL res -552 584 R180
SYMATTR InstName R2
SYMATTR Value 1e9
SYMBOL res -712 376 R270
SYMATTR InstName R4
SYMATTR Value 50
SYMBOL voltage -776 360 R0
SYMATTR InstName V3
SYMATTR Value ""
SYMATTR Value2 AC 2
SYMBOL voltage -568 360 R0
SYMATTR InstName V4
SYMATTR Value ""
SYMATTR Value2 AC 1