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*diff line on the top layer+ B. m; Q' `! D* {) X$ {5 [
*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]
1 W! M6 V8 c i! v. Y*created by liliming' q: a# s+ p. {3 V* s# |
*****************************************************
$ i& n; B' w/ ?" y7 Y# s* v% g1 O5 p; X* material FR-4 W= S=4 {& t) Q; v$ H5 _
* CRISS SECTUIB DUAGRAN AS FIKKIWUBG
. ]% O# Q1 w8 C$ R0 e3 d*//////////----dWidth--- dGap ---dWidth----//////////dThickness
; Z4 @; B& A# B) U! J1 M*////////////////////////////////////////////////////dHeight1
$ K! {* [7 y6 w) J N& d( ^*----------------------------------------------------dThickness) f. k$ {% [( l7 Y4 ]2 x( p7 E
******************************************************6 O; h8 o" x6 b) J3 Y
.param dHeight1=8mil& p6 c6 J7 ~4 a
.param dWidth =5mil
: H: g( r8 {& X7 r.param dGap =9mil$ m, Y+ n4 O( k% G! e4 ?: G
.param dThickness=1.2mil; p: c6 @7 Y; i. H
.param dLength=10000mil
- [6 W) | x" ], F3 Y8 Q2 H.options probe post0 v8 ?- ~0 U: B6 J
vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)" y/ `5 W) S, z+ _5 h+ a: |
wline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
6 Z: d! } y7 n n8 N: B7 H4 `+ N.material die dielectric er=4.3 losstangent=0.017
" }' j6 j; V9 S( V% i.material copper metal conductivity=57.6meg
; ^/ ^2 V# v$ J- \- t" T7 j' D) s* z.shape trace rectangle width=dWidth height=dThickness' S# f$ M9 L( f" g9 }
.layerstack stack2 q5 l' D" k- f" H! M( Q
+layer=(copper,dThickness) layer=(die,dHeight1)
9 J$ o& {6 \! W. r! E& ]; t2 v.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes& A( B4 P* j2 b1 u
.model dstrip w modeltype=fieldsolver5 P8 k' A7 d. S
+layerstack=stack
# I! U# y& q. g& l- k" d6 y' @- Z& c+fsoptions=opt1
" j1 A! O, W" s" k4 P+ Z6 I+rlgcfile=pcbdiff_top.rlgc' t+ W# @% v8 S9 r% ?
+outputformat=rlgcfile
# R+ }2 x: R8 R+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
) R, u0 n, S1 Q7 M8 R& S+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
/ O8 M. @, N% k* B/ G- `.tran 1ns 10ns
& z' G% L( I/ Z# f/ @- U.probe v(out1) v(in1)
. e" R; Y! t1 h) q.end |
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发表于 2010-5-15 11:09
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RLGC模型先上有人顶再上s参数
