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ADE-GXL optimization issue

hmcheema

Hello,

 I wish to run optimization for getting the maximum frequency tuning range of a VCO. This means that i need two frequencies corresponding to Vtune=0 V and Vtune=1.2V. (Vtune is the voltage applied to the varactors)

The optimization should then take the difference of the two frequencies and maximize it based on the parameters given.

To achieve this, i added two tests providing the two frequencies and naming them Freq0 and Freq1 but ADE-GXL does not allow to write an expression including outputs from two different tests.

 Is there a way to write an expression like Freq1-Freq0 and then add a specification to maximize it? Please see attached screenshot for reference.  

Kind help from the Cadence officials will be appreciated. Any other method which i can do?

Screen-shot of ADE-GXL setup

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  • hmcheema

    Thanks Andrew and Firas Barakat who sent a detailed email to answer the question. I am able to combine the two outputs of different tests in one expression.

    Kind Regards.

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  • hmcheema

    Thanks Andrew and Firas Barakat who sent a detailed email to answer the question. I am able to combine the two outputs of different tests in one expression.

    Kind Regards.

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