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本帖最后由 shark4685 于 2010-6-25 15:35 编辑
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9 C' H9 P. Z( b第四讲
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2D场求借器－－用来求传输线的s 参数等....
& \; x! Y. ]' \4 I0 D: A4 v/ D----------------------------------------------------------------------网表如下：/ Y) e9 e' {6 u0 Z; j. G0 R' E
*Micro Diff stripline6 b+ `2 X5 {5 p
*Micro Diff stripline.sp : caluclate micro diff stripline's s parament&rlgc model[*.s4p&*.rlgc]0 e' ^+ z. P" e6 Z, o# d
*created by Li Liming
2 X+ d' F" c/ p) F; ?' L$ [*****************************************************
w* k+ J* `2 ^* f1 O) i1 j9 n* Material ×××" \, J/ {: e2 X, d' {
* Stack layer9 G0 O! j0 q: f. C5 ~$ X7 s
*//////////----dWidth--- dGap ---dWidth----//////////dThickness! J' b6 \4 i: N2 U& [5 @
*////////////////////////////////////////////////////dHeight1" U' P# X$ m( E7 H
*----------------------------------------------------dThickness
4 g0 _( z# _" e6 H2 J/ |******************************************************8 }: Z/ Z) U+ x
- b) [9 D3 j' O# a. K6 s4 c.param dHeight1=9.84mil
9 I/ R2 x) N2 r4 k& I/ P.param dWidth =10mil( u/ ~. P! l, \6 @" L; T
.param dGap =8mil% i5 M) k7 q7 q
.param dThickness=2.2mil
: n0 N+ s8 u( B2 K8 F.param dLength=6000mil2 F+ V, w: W, [: ?% ]
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*******定义2种材料*******
4 z, W+ X+ y4 i/ I9 ^" I, b.material die dielectric er=3.48 losstangent=0.0037
$ }# L8 w4 k: W.material copper metal conductivity=57.6meg
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*******定义走线的参数，如形状，长度，厚度*******; ]" v2 T+ W% |$ m1 z
.shape trace rectangle width=dWidth height=dThickness5 d, a# j. u2 ^& P. Z
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*******定义层叠, 注意层叠是从下往上的。*******
/ K+ @) `6 Y; S8 p; C1 o; q# N.layerstack stack
0 b/ T# b' u% }& a6 D* S* M. k+layer=(copper,dThickness) layer=(die,dHeight1)
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* U# C3 p( [8 i6 t) r! `5 W% k4 ?*******定义仿真精度，格点，输出数据，计算类型*******1 f+ c6 b7 p: u+ o/ }
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes
8 o( G2 C N1 Y3 h/ S4 h+ACCURACY = LOW GRIDFACTOR = 1. m( ?! n6 C. t; F8 R
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*******定义扫描过程*******
( N( p) y* O" ~6 D; q* V8 Q.model dstrip w modeltype=fieldsolver
8 U1 b! I9 w* B+ o2 [+layerstack=stack
1 C& R6 h9 j* n" r( D+fsoptions=opt1
/ | w1 P* l- N; J! C. M+rlgcfile=micro_diff_stripline.rlgc
; ~' x( } U# D/ r% z+outputformat=rlgcfile
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******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 U$ j9 h" b# p. F& g7 s0 R& Y5 J/ b+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
2 y* E; }! M) G% {9 m+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
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: z5 y. n' ^8 M. Z2 ^*******信号类型*******" J6 k. A7 Z' c8 e* v
wtrace inP inN 0 outP outN 0 fsmodel=dstrip n=2 l=dLength& `! `3 l% J1 z
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.tran 25ps 1ns
; v* w1 h2 E! u i8 |0 U8 D0 [.probe v(inp) v(inn)
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9 K; K% P" @ ? O1 [*******.LIN语句，导出s参数*******
+ L7 Q3 Z8 `' J' V1 P.LIN sparcalc=1 modelname=my_custom_model 4 O+ R; Z" | `3 ?& i
+ filename=couple2line format=touchstone dataformat=db5 h' M9 B0 X0 q1 j& J. A" U
' z9 D: p8 E6 x2 r7 x, s6 Z*******定义2个节点间的端口******/ D: J7 A% Z9 R! O! D
P1 inP inN 0 dc=0 ac=0.84 port=1 z0=50
( T7 K. B) @$ O {/ E4 j! ]2 aP2 outP outN 0 dc=0 ac=0.84 port=2 z0=50
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8 n1 z* \" b: {/ v2 A.AC LIN 100001 1g 15G# [6 t) @/ H% j2 g+ o9 o
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.end
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4 C1 B3 W9 C; ~1 Y, f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