*Broken plane with two traces above it
*  This is the example presented at DAC '93 
*
.units mils
.default nwinc=1 nhinc=1 h=1 w=8
*****.default sigma=1.49e3
.default z=8
*
*ground plane definition
*
g_one x1=-1000 y1=-500 z1=0.0
+  x2=-50 y2=-500 z2=0
+  x3=-50 y3=500 z3=0
+  thick=1 seg1=10 seg2=10
+  nhinc=1
+ nAin (-500,16,0)
+ nBin (-500,-16,0)
+ n1bridge (-50,400,0)
+ n2bridge (-50,-400,0)
*

g_two x1=1000 y1=-500 z1=0.0
+  x2=50 y2=-500 z2=0
+  x3=50 y3=500 z3=0
+  thick=1 seg1=10 seg2=10
+  nhinc=1
+ nAout (500,16,0)
+ nBout (500,-16,0)
+ n3bridge (50,400,0)
+ n4bridge (50,-400,0)
*

nA1 x=-500 y=16
nA2 x=500 y=16
EA1 nA1 nA2

nB1 x=-500 y=-16
nB2 x=500 y=-16
EB1 nB1 nB2

n1br x=-50 y=400 z=0
n2br x=-50 y=-400 z=0
n3br x=50 y=400 z=0
n4br x=50 y=-400 z=0

.equiv n1br n1bridge
.equiv n2br n2bridge
.equiv n3br n3bridge
.equiv n4br n4bridge

E1bridge n1br n3br
E2bridge n2br n4br

*  3 loops
.external nA1 nAin trace1
.equiv nA2 nAout
.external nB1 nBin trace2
.equiv nB2 nBout

.freq fmin=1e-1 fmax=1e19 ndec=0.05
.end