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你可以先了解下曼哈顿距离的概念。
& r0 G" [) c/ P' {# Q! @/ J0 C% E他这个代表两点之间的距离。
9 [6 `$ q; f+ q) D1 |在SI中，用来设置没有布线的两点之间的默认长度信息。
: X) ?2 ?% {3 W% h8 D所以可以设置比率，你可以任意倍数长，当然不能少于两点之间的线段。! |" O8 @; V4 {! O+ \
截止频率：
9 }( [7 S% T9 hCutoff Frequency
$ L5 X3 k( ~: f' l$ H7 B; O M+ nUse the Cutoff Frequency parameter to establish a bandwidth for generating interconnect parasitics. When you set Cutoff Frequency to 0, and you choose BEM2D as the field solver, it generates DC values for the RLGC matrix only, and does not account for internal inductance. 3 L. X1 D2 N1 M! |
The section that follows explains the EMS2D settings used to generate frequency data. One option is to mimic how BEM2D uses the cutoff frequency setting; when you set this value
( S5 O& \3 i; `& v9 p7 y M" Dto 0, EMS2D provides internal inductance. |
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发表于 2012-8-15 14:23
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