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本帖最后由 shark4685 于 2010-6-25 15:35 编辑 / I* d0 \4 ^1 O
( ?% C0 g: o, f' ?! c1 ?, @第四讲
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9 p( G, c% r. q* K3 K2D场求借器－－用来求传输线的s 参数等...." r: c7 k! H& V( c+ |3 `
----------------------------------------------------------------------网表如下：( @! I. [1 x! C9 d2 E
*Micro Diff stripline/ ?5 d5 U% n# u* }% b9 S
*Micro Diff stripline.sp : caluclate micro diff stripline's s parament&rlgc model[*.s4p&*.rlgc]7 X s7 b9 |# S/ j- l- k$ H! R& o
*created by Li Liming
( Q4 { A# V' k0 @5 J*****************************************************. \4 N! n/ ^( T, M, ]2 v$ |
* Material ×××; d5 L+ p' b! ~1 y( G- i
* Stack layer0 A. _9 p5 {! I4 |2 x. s' I6 k4 o
*//////////----dWidth--- dGap ---dWidth----//////////dThickness8 S' p/ P6 U8 c6 E" q v
*////////////////////////////////////////////////////dHeight1
" \6 i! Q8 m/ Z% a7 \*----------------------------------------------------dThickness8 Y! I* W# |6 d
******************************************************
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.param dHeight1=9.84mil/ B6 k! d/ d2 j& M( Q
.param dWidth =10mil, F" q; F$ @6 j+ s% B+ @* N
.param dGap =8mil% ~9 }) N7 [! o) m7 T p! M
.param dThickness=2.2mil
9 [" l, ^3 a& u Q. T# o.param dLength=6000mil
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*******定义2种材料*******/ ~8 `+ N( Q; T! n: `; J. y, T
.material die dielectric er=3.48 losstangent=0.0037) L* J: n L4 j4 ~3 w
.material copper metal conductivity=57.6meg- ]8 ~$ s; V2 Q6 r; f( z
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*******定义走线的参数，如形状，长度，厚度*******. z6 d2 r! }# C% i
.shape trace rectangle width=dWidth height=dThickness0 k) L$ r# \/ R4 C& J
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*******定义层叠, 注意层叠是从下往上的。*******$ @( f7 d; J K
.layerstack stack* [* d# l# }4 _& i4 R! M" r
+layer=(copper,dThickness) layer=(die,dHeight1) ' \% a# x7 f, U) V% l
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*******定义仿真精度，格点，输出数据，计算类型*******
6 @; _# P% i: o.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes- X- a2 c: l/ J9 V/ C9 e0 F# v
+ACCURACY = LOW GRIDFACTOR = 1! J5 R( T0 G/ | i, ~
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*******定义扫描过程*******
( c) h, X7 f( E7 T9 V t.model dstrip w modeltype=fieldsolver5 S" d1 l% m' D$ E; b0 p
+layerstack=stack! O' k5 b9 e4 q {- N
+fsoptions=opt1
! F3 w! J, j" Z4 Q+rlgcfile=micro_diff_stripline.rlgc0 Y o" x) j. j7 T2 I# J, |) s
+outputformat=rlgcfile
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3 Q( s/ c7 ]' x7 @8 M+ Q( N******把差分的2段导体分别放置在平面上，用如下坐标定义他们的位置）*********( ~5 K6 E9 p m3 N6 Q
+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
2 T- ^8 b5 O: ^2 c) {+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)5 G+ S: r/ P" Q' x% A' Z
1 T1 ?8 c- n2 U# n6 P5 `*******信号类型*******
& v- u1 g2 C/ U2 C( \1 b% C0 c4 ]8 ewtrace inP inN 0 outP outN 0 fsmodel=dstrip n=2 l=dLength
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9 j3 o" V7 k6 ?0 k.tran 25ps 1ns M0 H" f8 S0 g3 ?0 o3 t& w8 d
.probe v(inp) v(inn)& h+ m4 m4 k' u: Y; `8 m
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*******.LIN语句，导出s参数*******
0 [+ r% w$ i$ E' i1 h* k- I.LIN sparcalc=1 modelname=my_custom_model $ ^1 M2 j: d( [
+ filename=couple2line format=touchstone dataformat=db
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*******定义2个节点间的端口******" b. H2 n$ a z8 r
P1 inP inN 0 dc=0 ac=0.84 port=1 z0=50
/ M' r" p; d- }9 t8 QP2 outP outN 0 dc=0 ac=0.84 port=2 z0=50
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! [- q/ ~ p* J; d# i, I.AC LIN 100001 1g 15G
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.end
; @6 l- f( l4 I. s3 u' R1 e－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
' f. l) H$ P3 K( U微带差分线的s参数 从1g－15g |
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发表于 2010-5-27 11:31
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支持！
反对！
发表于 2010-5-27 23:01
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顶一下