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*diff line on the top layer# @0 m9 h9 s# t# g. @3 u
*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]4 u# C1 b8 R6 ?( ^
*created by liliming, n* |" m8 b) s
*****************************************************
0 q* E7 t2 x f* material FR-4 W= S=
1 ?4 d. M* E3 l! l/ ?! }! X: z5 d* CRISS SECTUIB DUAGRAN AS FIKKIWUBG, t0 w9 D! k/ g' G
*//////////----dWidth--- dGap ---dWidth----//////////dThickness
; R1 y: L4 Z. A*////////////////////////////////////////////////////dHeight14 D. \2 D8 l! v% ?- w t- j; I
*----------------------------------------------------dThickness
8 Z8 {, X1 S5 v6 }3 \) S******************************************************! u' C3 |# y+ g/ [. V
.param dHeight1=8mil) R! [; i0 r( {
.param dWidth =5mil
$ k- |- L7 Y, S* y6 p.param dGap =9mil
: l* }* r3 C4 l [ a& J.param dThickness=1.2mil% z5 d/ V1 N! j7 O* h
.param dLength=10000mil
, H- x: m: J4 z2 ^4 Y.options probe post
5 r0 @( i" i8 l: r, |vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)
# \( P" L# w) ?3 f" I; Lwline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
) V" [8 Q* Y# g7 |.material die dielectric er=4.3 losstangent=0.0174 s; q# r2 C! U2 j1 I& J' [
.material copper metal conductivity=57.6meg. d: X% H) F3 a# q
.shape trace rectangle width=dWidth height=dThickness
$ R0 c/ ]* `& [7 \3 O.layerstack stack
, P9 T8 H+ p: y0 `" g% a+layer=(copper,dThickness) layer=(die,dHeight1)
3 F( w& ^* ^9 v) {.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes
* X' ~% `5 q0 p) g( o' X.model dstrip w modeltype=fieldsolver$ {1 W( {" f3 N: N9 _/ ~! O
+layerstack=stack
5 s3 E j7 }! L2 O8 _( C+fsoptions=opt1+ P. t4 Z1 Q! k% K" v. }
+rlgcfile=pcbdiff_top.rlgc( j! F: B8 h: X. `7 G
+outputformat=rlgcfile
% [" c4 o/ q. P* x+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
/ {! J* `) O, ]! E; I: ^) O. h4 S+ @+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)# L+ ~& s- c3 m& {
.tran 1ns 10ns1 v3 X( q* r m* v
.probe v(out1) v(in1)1 @) r4 l x# o2 h2 e
.end |
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发表于 2010-5-15 11:09
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楼主
RLGC模型先上有人顶再上s参数
