How to find the input impedance of a circuit in ADS?

how to find the input impedance of a circuit in ADS? is there a non polar capacitor in the library, i have only found capacitor with polarity.

regards

in s parameter simulation pallet there is a meas called Zin , u can use it to calculate the input impedance of the circuit u want

wish this can help

khouly

running an s parameters simulTION and plotting s11 on a smith chart will give you the value of the zin associaated with the s11 at the frquency of interest besides you can define an equation that gives you the value of zin
zin=(1+s11)/(1-s11) then include it in a table you can find AN example of a smith chart plot attached

use the below formula..

Zin_ohm=zin(s(1,1)).

Place in the display equation format...
plot it using rectangular...

Hope this step help..

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