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*diff line on the top layer' w! A# q M$ ~: Y
*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]1 V9 R3 a2 @) ]: s) t
*created by liliming- v8 g9 q6 P2 e, H! B
*****************************************************! d" r8 {+ t! \
* material FR-4 W= S=
6 ~. a. T' W& V5 Y! j9 {1 c* CRISS SECTUIB DUAGRAN AS FIKKIWUBG% ~! L" T/ B$ ]. c' E5 p0 `
*//////////----dWidth--- dGap ---dWidth----//////////dThickness$ s: H0 c$ I6 j
*////////////////////////////////////////////////////dHeight17 N6 ?( f% h% l$ D+ y9 o# R
*----------------------------------------------------dThickness1 y6 Y4 `3 A$ x- V7 b% x' ?, K
******************************************************1 I4 v' I8 r1 t
.param dHeight1=8mil4 f' h( ]& d1 m% Q S% K. Z
.param dWidth =5mil
& {4 `6 X2 Y! _2 T- z6 f.param dGap =9mil
& w7 w& k' |6 `.param dThickness=1.2mil
: D6 \; T4 f$ o2 s- \5 _+ n.param dLength=10000mil
4 M: H: Y4 |2 b# _.options probe post. c; _/ T& Z2 y; E( e2 y# F4 y
vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)
2 A/ Q& C+ V4 Q9 k: V e6 Z Lwline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
4 Z: n0 C x/ h6 N.material die dielectric er=4.3 losstangent=0.0170 S7 p) \+ m- t' A V+ w
.material copper metal conductivity=57.6meg
5 X! N8 {+ B4 O) I: g0 J* Z.shape trace rectangle width=dWidth height=dThickness. @6 d4 {4 A7 d4 A; F# t$ }$ m
.layerstack stack o- _8 k) _- a& L$ K
+layer=(copper,dThickness) layer=(die,dHeight1)
+ r* x/ M6 y7 P# {.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes7 \( \ ?1 z( e2 V
.model dstrip w modeltype=fieldsolver
, t, x: c2 n1 Z( y+layerstack=stack- U' o5 C/ p8 e) ~& ?
+fsoptions=opt17 \/ |( e, ^7 j; G& T, K
+rlgcfile=pcbdiff_top.rlgc; [/ F' ?1 M9 k( ~4 X- v1 v
+outputformat=rlgcfile
) n$ U. }* T) z$ ~' A: V+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
6 R3 I2 |5 }" z$ Z7 N* c+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
4 k, t0 g/ f( d( p+ Z+ n$ V, B.tran 1ns 10ns- N( K" ?7 z: R" h6 h
.probe v(out1) v(in1)7 K& u% `5 Y) [' K* Z5 l
.end |
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