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how to extract attenna.lef from cadence abstract generator ?

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feel_on_on

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When abstract generator extract lef file which is include antenna.lef and which is not include antenna.lef, what is the difference on set " signal tab ,power tab,and Antenna tab ,General Tab ?

tf file dump as following :

characterizationRules(
;( rule layer1 layer2 value )
;( ---- ------ ------ ----- )
( thickness "METAL1" 0.53 )
( defaultAntennaRule "METAL1" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( defaultAntennaRule "VIA12" (20.0 _NA_ ((0 20) (0.201 20) (0.202 74.0) (0.404 148.0)) _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( thickness "METAL2" 0.53 )
( defaultAntennaRule "METAL2" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( defaultAntennaRule "VIA23" (20.0 _NA_ ((0 20) (0.201 20) (0.202 74.0) (0.404 148.0)) _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( thickness "METAL3" 0.53 )
( defaultAntennaRule "METAL3" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( defaultAntennaRule "VIA34" (20.0 _NA_ ((0 20) (0.201 20) (0.202 74.0) (0.404 148.0)) _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( thickness "METAL4" 0.53 )
( defaultAntennaRule "METAL4" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( defaultAntennaRule "VIA45" (20.0 _NA_ ((0 20) (0.201 20) (0.202 74.0) (0.404 148.0)) _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( thickness "METAL5" 0.53 )
( defaultAntennaRule "METAL5" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( defaultAntennaRule "VIA56" (20.0 _NA_ ((0 20) (0.201 20) (0.202 74.0) (0.404 148.0)) _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
( thickness "METAL6" 0.99 )
( defaultAntennaRule "METAL6" (_NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_ _NA_) )
) ;characterizationRules

Who can tell me how to get these value ?
 

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