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Design >> RF Design >> limitations of kf stability factor
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Message started by aaron_do on May 7^th, 2013, 3:20am

Title: limitations of kf stability factor
Post by aaron_do on May 7^th, 2013, 3:20am

Hi all,

I have come across this document which says that k-factor is insufficient when considering multi-stage amplifiers or even multi-finger transistors.

http://www.home.agilent.com/upload/cmc_upload/All/AMCAD-STAN_presentation.pdf?cmpid=1-3623739609&cc=SG&lc=eng

Just wondering what kind of limitations does k-factor have?

thanks,
Aaron

EDIT:
For example, is it possible for a multistage amplifier to be internally unstable but have an overall k>1?