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*diff line on the top layer/ j, _4 m; ]* J
*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]
! F' r+ o9 S( b3 k8 p. v. D* {*created by liliming
4 b. [( J. C. e/ T9 z0 a' f( \" {*****************************************************
4 s' }3 u0 y6 I7 p) j* material FR-4 W= S=* G$ {6 D0 x2 S- K8 i" q
* CRISS SECTUIB DUAGRAN AS FIKKIWUBG
' e0 T3 _7 v/ ~& V*//////////----dWidth--- dGap ---dWidth----//////////dThickness& C8 U, j9 T! ?7 {, D
*////////////////////////////////////////////////////dHeight1
: l8 V1 G: f# G2 x5 P# D3 M; p1 L*----------------------------------------------------dThickness
3 x3 L+ j8 w8 q% p# c! O0 f******************************************************
$ ?' Y2 v0 x/ S2 H2 p/ s5 V.param dHeight1=8mil* n) N6 q k+ V. M4 F9 Y
.param dWidth =5mil T# N. Y: f5 z/ Z1 F) A
.param dGap =9mil' v$ X G9 g+ i8 P
.param dThickness=1.2mil
- q" ^& u9 L, r) j* x.param dLength=10000mil
& r* L3 a* m2 ~.options probe post G1 U. @, }4 y; l. U
vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns) g y" `3 w2 F
wline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
9 o7 n7 P0 l$ A8 ~% }: S.material die dielectric er=4.3 losstangent=0.017: y4 ]+ o; _* T2 N3 h& G3 Y
.material copper metal conductivity=57.6meg0 U2 k; I( R N: n0 w2 G" [
.shape trace rectangle width=dWidth height=dThickness
" T/ d. V) E( W/ z4 c2 K$ t6 z.layerstack stack
) Q9 v% B* v6 @+layer=(copper,dThickness) layer=(die,dHeight1)
4 o$ A" t3 b4 s$ W5 ^5 {.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes
- Y# c; i, n: U' \- d! K- P.model dstrip w modeltype=fieldsolver
3 G4 v v7 n- S2 e0 K- H' q+layerstack=stack( H, R+ K7 f+ U+ P- F
+fsoptions=opt11 F& ?& B. }9 l' l: D: }" H4 I' P/ D
+rlgcfile=pcbdiff_top.rlgc
2 d* V6 M+ D1 ]: G! B: D+outputformat=rlgcfile: }2 E# w) H0 D( B+ k- Y0 d' F
+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)8 k' ~# V' o2 \6 y
+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)# U! W' C* d. k& N
.tran 1ns 10ns9 G9 d; |& f' y' i7 N0 M( r
.probe v(out1) v(in1), E7 {' q( a: l; Z0 C
.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