FET intrinsic gain characterisation

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IntuitiveAnalog

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Hi everyone,

I am characterizing a Field effect transistor with a verilog A model using spectre. I want to plot gmro (intrinsic gain) vs vds. But the problem is that, the model does not store gm or gds values in dc operating points. Is there any test bench from which I can extract gmro vs vds plot without actually getting gm and gds values individually?
Any suggestion is appreciated.

Thanks!!!
 

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