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*diff line on the top layer
" L& l) Z/ E% R$ b" D4 n0 P*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]8 |3 U% f) ?5 r7 b. k
*created by liliming: z8 F( M8 J& Z& X& }( ?
*****************************************************" U; m5 w* c! P) S' c
* material FR-4 W= S= C7 x6 I9 g( I5 m" u1 x9 C( B
* CRISS SECTUIB DUAGRAN AS FIKKIWUBG
2 _7 I+ t* f6 X* r7 p2 L7 L*//////////----dWidth--- dGap ---dWidth----//////////dThickness) [# G: J5 I+ L' }
*////////////////////////////////////////////////////dHeight1
& B9 W) L g+ ^7 j# g+ P2 h2 A* Z*----------------------------------------------------dThickness* O6 f0 @( |/ F/ E# B/ I' s
******************************************************& [& P5 j1 o' F, l
.param dHeight1=8mil" ]/ ~* G8 h) E- F6 M8 w. J6 a
.param dWidth =5mil
7 b6 z$ g B8 Z.param dGap =9mil
, r% B* ?, a0 v0 k- K.param dThickness=1.2mil
$ f2 W9 ^# D& Q5 x2 n.param dLength=10000mil
6 ]1 o/ Q* W, k# T.options probe post
* t! G" v: I: a _6 z# ovimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)
) C) @/ S0 U6 _" c% `+ g2 i! M1 Mwline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
& ^" V, h) R" ?.material die dielectric er=4.3 losstangent=0.017% ?/ Q+ x, y; j, B0 S$ e
.material copper metal conductivity=57.6meg
3 G- h6 w# `; @/ h.shape trace rectangle width=dWidth height=dThickness- `4 N/ [* x" F2 y* `
.layerstack stack, V- |4 P1 C9 S7 J0 P$ w
+layer=(copper,dThickness) layer=(die,dHeight1)3 i" r+ f Y$ V+ f3 U5 K
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes* d; \- y: x, }/ w F: ^
.model dstrip w modeltype=fieldsolver5 K/ ~, u- f8 Y: l) _2 s# m
+layerstack=stack
) C8 W* n, }8 ]/ T" M# f+fsoptions=opt1
/ ^$ `8 p, Q# L7 s9 j+rlgcfile=pcbdiff_top.rlgc
2 F: Y& U% \& C7 G9 ~' K+outputformat=rlgcfile
4 Z/ G0 a: X4 Q6 _2 ^+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
0 X9 s" m5 R& C+ G/ r1 G- z9 q+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)5 p: l. K. j- E
.tran 1ns 10ns
$ G+ F4 b N' b) O; a- L.probe v(out1) v(in1)
; n) ?6 J5 j3 V.end |
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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