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Measurements >> RF Measurements >> Group Delay measurement in Cadence
https://designers-guide.org/forum/YaBB.pl?num=1313280431

Message started by Larry_80 on Aug 13^th, 2011, 5:07pm

Title: Group Delay measurement in Cadence
Post by Larry_80 on Aug 13^th, 2011, 5:07pm

Could someone please put me through how to plot/measure the average group delay vs frequency of a TransImpedance Amplifier in Cadence. Is it possible to plot -d(phase)/dw, if i recall, that's the definition of group delay! If i haved to find the derivative of the phase to do this, how do i plot phase in cadence? Thanks

Title: Re: Group Delay measurement in Cadence
Post by rfcooltools.com on Sep 7^th, 2011, 5:29pm

Larry_80,

Depending on the version of cadence you are using it should be an explicit function in the calculator called "groupDelay".

http://rfcooltools.com

Title: Re: Group Delay measurement in Cadence
Post by rfidea on Sep 21^st, 2011, 12:01pm

Or you can use the deriv() function if you like, deriv(phase(VF("/vout"))/2/pi