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  1. #1
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    stability factor for lower frequencies?

    Hello everyone.
    I am designing a VGA for signals up to 3Ghz.
    It seems that everytime I put a feedback in my circuit the K factor gets lower than 1, though the phase margin and gain margin calculations would seem to suggest that the system is stable.
    I was wondering whether I can still trust the K factor for lower frequencies and in systems with feedback.
    Does anybody know where I could find some info about that?

    Thank you

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  2. #2
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    tony_lth's Avatar
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    Re: stability factor for lower frequencies?

    You can try Mu and MuPrime, that can give you better indications.



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