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*diff line on the top layer
6 a1 l, j6 C2 ~) k$ M( T*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]
+ c; R: j, N# ~+ z2 k# o1 M*created by liliming
8 M7 p& s$ V4 s% j2 L7 ^9 d4 p) ]*****************************************************# T9 }1 H, O0 [" I) I
* material FR-4 W= S=, h' @) Y, F3 {/ d
* CRISS SECTUIB DUAGRAN AS FIKKIWUBG# B% M x7 i3 g- d5 W3 y
*//////////----dWidth--- dGap ---dWidth----//////////dThickness9 l$ K5 v# \# |
*////////////////////////////////////////////////////dHeight1
# k5 B! D% N ^; X*----------------------------------------------------dThickness- Y; }- k# M* Q: N& }
******************************************************8 @7 g9 a- z$ X- o
.param dHeight1=8mil# }1 s1 S S5 n- N, m6 r/ a3 a# K1 W: j
.param dWidth =5mil
+ o& a/ @/ D' F ?7 u.param dGap =9mil6 C% q2 i4 A7 M2 d$ E
.param dThickness=1.2mil
/ }9 {! m" H( W4 Q.param dLength=10000mil
, \ z; _( J( w( b4 D. `.options probe post
: B% e0 |) y! M& u9 vvimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)8 _2 Z9 _2 M, t" \: u! H
wline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
1 j5 r' @/ R- j$ f" e# ~.material die dielectric er=4.3 losstangent=0.017 T4 o- m! T$ w6 M
.material copper metal conductivity=57.6meg
/ N' D- m5 y0 D) y5 x, s.shape trace rectangle width=dWidth height=dThickness; x8 T) k/ E; O8 h
.layerstack stack
5 Y/ v+ z ~% p" x/ {: p2 Z+layer=(copper,dThickness) layer=(die,dHeight1)
- o" ^, P$ }7 T1 i( H4 d1 A! s.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes! o6 b+ J6 _& v% |1 {
.model dstrip w modeltype=fieldsolver& A7 B- q% m) n; T
+layerstack=stack
a6 x) K1 R9 N, @+fsoptions=opt1* y+ D! P. J9 o4 |: Y+ c8 D
+rlgcfile=pcbdiff_top.rlgc
& J. N1 l* T1 U* b1 F/ y/ _4 l+outputformat=rlgcfile. Y- N( _) z2 g( ?5 R
+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
: S$ z, {+ M1 E+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
9 B( ]2 X) r7 z+ h% {* p.tran 1ns 10ns( j2 }4 }5 C3 x6 F6 H$ s( M' J
.probe v(out1) v(in1)3 Z: r8 Y# u* ]) Z- e
.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