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Finding output impedance in Cadence

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elbadry

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cadence impedance

How can I find output impedance in Cadence? ( I mean the whole circuit's o/p impedance and not transistors' ro)

I have to use one of the periodic analysis types because my circuit is driven. Is there something quick to do that?

Or would I need to add a port at the o/p, and use PSP analysis?

Thanks in advance
 

cadence output resistance

U can simply run an sp analysis and draw the Smith chart view
Then the real part and image part of the normalized output impedance can be read once you put the cursor on the S22 curve.

rgds
 

cadence ic + input + output impedance

Yes, but if elbadry says his circuit is driven? Then he would need to use psp analysis like he proposed himself. elbadry, what kind of circuit is it?
 

find output impedance

It is a mixer...

So, you suggest that I run a psp analysis and then find Z22 (with the input as port 1 and the o/p as port 2)?
 

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