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本帖最后由 shark4685 于 2010-6-25 15:35 编辑
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) Q0 l0 O: {, w- z: e% U第四讲
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: B/ B$ \; c& S, b% C( f7 K2D场求借器－－用来求传输线的s 参数等....8 E9 M% a& q6 E" F
----------------------------------------------------------------------网表如下：9 m8 {9 w( ~0 q9 x) H; P. F2 @* m
*Micro Diff stripline
: o9 G: X' g9 \5 B/ J*Micro Diff stripline.sp : caluclate micro diff stripline's s parament&rlgc model[*.s4p&*.rlgc]
. L, {' b1 G' s' ^; c4 f% d* g*created by Li Liming1 g) Q2 f" @, @' t8 a
*****************************************************
* ^$ J4 J2 {" E* Material ×××: r* R. s _3 V$ r9 P3 W, [+ \4 u
* Stack layer
Y. n" F7 p; X" J" Y+ B7 n*//////////----dWidth--- dGap ---dWidth----//////////dThickness
8 d8 T0 @/ w$ y" e! a) G*////////////////////////////////////////////////////dHeight1" P* t9 l/ n( r& y8 X
*----------------------------------------------------dThickness
: d) M' G3 a0 O/ w C******************************************************, C8 G1 w5 D) V" r/ p) h; B0 Y
# E# p8 y2 @3 l4 S* F- `.param dHeight1=9.84mil
) k$ r# S) v# S.param dWidth =10mil2 j! t2 x( B# ~6 S% |" i P+ y
.param dGap =8mil
# l5 D- \! }6 }.param dThickness=2.2mil
0 F3 m* ]# M+ }4 B) L+ S+ e5 M8 q5 [; \.param dLength=6000mil' ]( c. [9 d& k
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*******定义2种材料*******# c2 n5 n+ Q! d6 |
.material die dielectric er=3.48 losstangent=0.00373 r5 b+ y! x! Z
.material copper metal conductivity=57.6meg
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& [, D$ f: b% \$ r. a8 @*******定义走线的参数，如形状，长度，厚度*******$ |5 @7 c. e' S
.shape trace rectangle width=dWidth height=dThickness1 M, K* c1 J: c* C
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*******定义层叠, 注意层叠是从下往上的。*******& H) ~9 n1 l. P6 V
.layerstack stack4 h( R+ ]) x; B
+layer=(copper,dThickness) layer=(die,dHeight1) 1 I8 {6 \" a/ r3 n
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*******定义仿真精度，格点，输出数据，计算类型*******: h. c, C; y) k0 d
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes
: ?* S5 k1 P4 ?) G; t+ACCURACY = LOW GRIDFACTOR = 13 B/ `3 h m& H9 N. `6 E, r
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*******定义扫描过程*******0 ^7 W& R; c6 w- {7 Q
.model dstrip w modeltype=fieldsolver
3 @6 B9 z0 O/ j/ B+layerstack=stack0 H- ?% Q. L7 P* f, i
+fsoptions=opt18 y! R2 v! M2 s8 J( A3 Q1 S
+rlgcfile=micro_diff_stripline.rlgc; h6 {9 V1 ^' V! b! ~
+outputformat=rlgcfile
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3 R! `$ J# ]% R$ T******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）*********
4 _9 o# r' c3 l4 o! h1 d+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal) L0 K/ C8 k& U( Y0 b4 r" C; ~* c
+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
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l' o' n% O- A2 z0 ?*******信号类型*******3 ~4 C7 |! x4 {* ]9 U
wtrace inP inN 0 outP outN 0 fsmodel=dstrip n=2 l=dLength% e5 b4 H4 V8 G# s& n
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.tran 25ps 1ns
" n6 h3 L8 Y2 W' X- ^.probe v(inp) v(inn)
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) z+ z- R3 `- w: c0 e T0 @*******.LIN语句，导出s参数*******2 B- ]+ \) \1 N. c
.LIN sparcalc=1 modelname=my_custom_model
0 [, b+ C( \6 X% g: ?+ filename=couple2line format=touchstone dataformat=db
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*******定义2个节点间的端口******2 \4 }0 B4 L0 q# E6 ]. D
P1 inP inN 0 dc=0 ac=0.84 port=1 z0=50# B7 x% B. L; x1 D t, z
P2 outP outN 0 dc=0 ac=0.84 port=2 z0=50% ?) q# |# F& V5 X4 _+ i, R
1 U; n& v5 b' w& E R5 m.AC LIN 100001 1g 15G5 o2 p3 z" x" A6 Q. V
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.end
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2 ]0 D7 `. }5 y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