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[Assura QRC] In what conditions can inductance be extracted?

bjbit

I am testing if I can extract inductance parameters from any layout using Assura QRC "RLCK". However, in the extracted SPICE file, there is no inductance records, while resistance and capacitance extractions are working properly. Here I attach the images of a simple inverter layout and its QRC setting. Anything I am missing? Thanks in advance.

   

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  • Hi bjbjt

    You are running return-limited inductance extraction using QRC 11.1.0-p337. I see the following warnings in the log file:

    WARNING (ADVGN-221293): No inductances were extracted from the design 
    even though inductance extraction was run.
WARNING (ADVGN-221294): Check the ?rcxplNetFile and ?userRegion files for errors 
    that may have prevented inductances from being extracted.

    Would you please enable the PEEC buttion, select the entire cellview as the region and retry? It could be that return-limited is unable to find suitable inductors if your layout is too small.


    Best regards
    Quek

Reply

  • Hi bjbjt

    You are running return-limited inductance extraction using QRC 11.1.0-p337. I see the following warnings in the log file:

    WARNING (ADVGN-221293): No inductances were extracted from the design 
    even though inductance extraction was run.
WARNING (ADVGN-221294): Check the ?rcxplNetFile and ?userRegion files for errors 
    that may have prevented inductances from being extracted.

    Would you please enable the PEEC buttion, select the entire cellview as the region and retry? It could be that return-limited is unable to find suitable inductors if your layout is too small.


    Best regards
    Quek

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