* Coupled lines SP

V1 p1 0 dc 0 ac 1 portnum 1 z0 50
V2 p2 0 dc 0 ac 1 portnum 2 z0 50
V3 p3 0 dc 0 ac 1 portnum 3 z0 50
V4 p4 0 dc 0 ac 1 portnum 4 z0 50

A1 %hd(p1 0) %hd(p2 0) %hd(p3 0) %hd(p4 0) %vd(p1 0) %vd(p2 0) %vd(p3 0) %vd(p4 0) CPMLIN1
.MODEL CPMLIN1 CPMLIN(w=1e-3 l=20e-3 s=0.3e-3 er=9.8 h=1e-3 t=35e-6 tand=1e-3 rho=0.022e-6 d=0.15e-6 model=0 disp=0)

.control

sp lin 100 0.2e9 4.2e9

plot abs(s_1_1) abs(s_3_1) abs(s_2_1) abs(s_4_1)
plot abs(s_3_1)

.endc