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Measurements >> RF Measurements >> Gm
https://designers-guide.org/forum/YaBB.pl?num=1166422179

Message started by sivacharan on Dec 17^th, 2006, 10:09pm

Title: Gm
Post by sivacharan on Dec 17^th, 2006, 10:09pm

To measure the transconductance of the mixer i used QPSS analysis.
But after running the simulation, i clicked on the output node of the port.
But the tool is saying "res/PLUS is not a kept output".
What does it mean??

Thank you.

Title: Re: Gm
Post by didac on Dec 17^th, 2006, 11:07pm

Hi,

Without more info I guess that the Mixer output is in current mode. If you want to see a current in Spectre you must first select like an Outputs-->to be saved. After saving it in the form you can run the simulation and you can view the output without further problems.

Title: Re: Gm
Post by sivacharan on Dec 18^th, 2006, 12:10am

didac,

yes, my mixer output is current. i didn't save the output node to plot current.
i got the result after saving the output node on the outputs list.

Thank you didac....