abstract antenna提取汇总，报short，antenna提取结果不正确

note30933

谢谢分享

ncash0933

谢谢分享

lndxeb

楼主好文

一叶知东

peng930824 发表于 2022-9-29 10:34
楼主您好，我有个小问题请教，我在用工具的时候，用一个buf做测试，，不知道什么原因，根据流程导入lef gds ...

可能是你字体问题

smint1986

5/3nm的VNW和VPW容易提取不出来，需要取extract这里对应的signal和power定义layer

smint1986

有时在pin的时候填map 报错，可能是目前的gds不含这一层，找个含这一层的gds就可能不报错，layermap含有没有用

smint1986

当block提取不出来多边形的时候，需要在step（abstract）overlap换成always，且 using geometry on layers换成对应的boundary

smint1986

天线问题：
Antenna region：这里定义逻辑运算的方式。Antenna Regions：定义栅极/漏极的 逻辑区域（需几何运算
Antenna Extraction ：是天线最后出来用那个层表示，这里只定义层，没有逻辑和运算关系指定 物理层提取范围（直接写层名）
两者协同作用，且两部分不能写同样的内容 若两者规则相同，工具无法区分 物理层 和 逻辑区域，导致天线值缺失
Comparison of Geometry Specifications for Antenna Regions and
Antenna Extraction
When defining the geometry specification for the polysilicon layer in the Layer Assignment
for Antenna Extraction table, do not use the same specification as the one you used in the
Layer Assignment for Antenna Regions table. If you do, Abstract Generator cannot extract
the full polysilicon shape and cannot output antenna values for the input gate.
In the following example, notice the different geometry specifications in the two tables.
Excluding Signal Nets from Antenna Calculation
The Signal nets to be excluded from antenna calculation field allows you to specify the
nets that should not be considered for antenna extraction and therefore, lets you avoid
antenna calculations for the specified pins. For example, by specifying the expression as in*
for the signal nets to be excluded, you can exclude all nets with names beginning with in from
antenna calculation.
This field is enabled only if one of the calculate antenna options is selected.