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*diff line on the top layer0 S) ~6 j# }5 `# a% R. `
*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]1 Y0 M# ^( q) j3 U! c2 w
*created by liliming
0 I) o+ s( u3 `9 Q( J6 ~2 T: X7 X*****************************************************
" P$ z4 k& a% z# @7 ^* material FR-4 W= S=
7 Q. N+ P _1 B5 h0 \* CRISS SECTUIB DUAGRAN AS FIKKIWUBG4 _ t" z( E" q6 g Q0 y
*//////////----dWidth--- dGap ---dWidth----//////////dThickness
# _, z0 m6 m# a! r0 N*////////////////////////////////////////////////////dHeight1
- `6 E: J, y- C' b+ I4 [. W( r*----------------------------------------------------dThickness/ B7 L8 C: }' X l+ B
******************************************************, E' R2 t( q+ c9 S# j$ ^# j9 T
.param dHeight1=8mil
2 |1 m! S. u' u$ V& {& v2 S3 c.param dWidth =5mil
' `5 |" O% Q5 I; h.param dGap =9mil
8 h8 O. \8 Q. d! z% V, r* ~' ~.param dThickness=1.2mil0 r% h# T" C9 _9 R/ x; r- W
.param dLength=10000mil2 r$ k; c% r+ J( o* y e
.options probe post+ _& ]7 c0 @3 S
vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)6 F# G( i9 w9 ^& g/ T
wline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength
% m* m) ?$ Z" r( ~' }7 v) b.material die dielectric er=4.3 losstangent=0.017, {# @* _' l8 R# j7 p6 }( n/ f
.material copper metal conductivity=57.6meg
, {, B- }4 Q. q9 }2 U& I.shape trace rectangle width=dWidth height=dThickness
) D) W! c. g+ p! b5 W& ].layerstack stack o; q6 {: E% h, N8 P B8 u
+layer=(copper,dThickness) layer=(die,dHeight1)3 U- z) i- W ^2 h! G/ t. z3 u
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes/ t8 V* J! z9 G4 f3 k4 c
.model dstrip w modeltype=fieldsolver
( d' q( m9 E# P+layerstack=stack: K i8 s7 K2 c; Z
+fsoptions=opt1
. j- J: [% r1 V) z, V9 t+rlgcfile=pcbdiff_top.rlgc
. }8 F. M& V! t- i5 x+outputformat=rlgcfile8 }( a1 L8 Z' }8 o2 E
+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
: `$ d- ?; a7 V9 Z4 W* G6 x+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)5 q g6 o* O! W. O( Z1 s
.tran 1ns 10ns4 e9 o* O* Q1 T1 B, ]' @+ @9 V
.probe v(out1) v(in1)# p7 t' F# G- l) m9 w
.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
