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Help, Error with simulation


I tried to simulate an LNA using Virtual-Source Carbon Nanotube Field-Effect Transistor using HSPICE 2008,03 but it gave me this error " hsp-vacomp: Error: Symbol name 'i' is undefined." 

Could you please help me regarding this issue.

Thank you in advance

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    Geoffrey Coram

    Can you get access to a newer version of HSpice?  2008.03 is pretty old.


    It looks like 'i' is only used in a for-loop inside the function CarrierDensity.  Please change that 'i' to 'ii' and verify that it is that variable that is causing trouble.

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