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*diff line on the top layer
2 l8 B7 E, U! v; s y6 d*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]: q7 i/ |* s, m" i+ m( ]! C+ D) h
*created by liliming1 X; u9 w. d3 x% c/ w
*****************************************************
' Y0 z# Y, k. p: a7 T6 E( F* material FR-4 W= S=
- V0 O h7 ^* z1 G& _* CRISS SECTUIB DUAGRAN AS FIKKIWUBG' ?& [2 X$ D3 ?3 |+ f$ s
*//////////----dWidth--- dGap ---dWidth----//////////dThickness
& _& r! u- H) p9 d*////////////////////////////////////////////////////dHeight1
/ o2 q- t- T) q3 f*----------------------------------------------------dThickness9 C' H% z1 @* U* N# s! x1 e
******************************************************
; v, j7 \4 U! @% J.param dHeight1=8mil
: ~1 g$ A h/ \; [.param dWidth =5mil
: Z7 J. _, u8 F9 R6 `.param dGap =9mil
7 _* I. @, {# e.param dThickness=1.2mil" E6 b" g: P( q* p: ]& a
.param dLength=10000mil: P3 @, v. P6 i
.options probe post
( u+ Y$ G3 h6 G& Cvimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns); n; ^! c' j& B- s6 q
wline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength6 ]( _0 a* e; A4 l; W
.material die dielectric er=4.3 losstangent=0.017) B1 z+ b9 P9 H# V2 |
.material copper metal conductivity=57.6meg
; M0 Z+ X! ^3 w' {.shape trace rectangle width=dWidth height=dThickness* d0 o7 r' M' A- W+ l
.layerstack stack! x, F) |. l$ c7 x6 R8 E
+layer=(copper,dThickness) layer=(die,dHeight1)* M- g6 O% r Q( Q0 z, @% |
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes
, L" X# H% f, n: |6 W) }.model dstrip w modeltype=fieldsolver, @2 s6 }6 _9 @+ R/ s! [
+layerstack=stack
& Y- ]1 V1 p- K" J6 y+ l! H+fsoptions=opt1
V- a) ?: R# [- c9 K+rlgcfile=pcbdiff_top.rlgc4 n. U1 K+ w2 ~$ J6 v
+outputformat=rlgcfile
. n, ~) v% b) B5 u+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal): r& }" S7 L; q& @& R4 `+ M; K
+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
% C# x4 f6 ]5 M! h! }, h3 z.tran 1ns 10ns4 q" ~; d( w" W6 u
.probe v(out1) v(in1)
" B/ ~8 a4 E' c) e0 ~$ d# o0 h.end |
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/1 
发表于 2010-5-15 11:09
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淘帖
支持！
反对！
楼主
RLGC模型先上有人顶再上s参数