Output problem in ADS

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Sadegh.j

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Hi

I am trying to measure the output capacitance of the circuit using the S-Param simulation and with the "Zin" tool. The problem is that I need the DC voltage of a node to. When I name the node and go the "Data Display Window", I cannot see the named node. Why?
 

Dear Friend
from component palette select simulation-DC
then select DC and add it to your schematic
by this way in the simulation results you can see your dc node voltages

good luck
 

i agree , or from simlutae window select annotate DC solution

khouly
 

It says:

"Either DC analysis was not performed in the last analysis of the design or dc data of Swept analysis cannot be back-annotated at this time"

What should I do?

Added after 1 minutes:

Dear Friend
from component palette select simulation-DC
then select DC and add it to your schematic
by this way in the simulation results you can see your dc node voltages
Click to expand...

Interesting, Now, no HB simulation is performed.
 

how HB and Dc sgould be performed ?

can u send ur project

khouly
 

Dear Khouly

What I actually need is to know whether my transistor is in the triode region or not?

Thanks
 

simply in the HB engine in Params tabe , and select Device operating point detailed , and ur done

wish this solve ur problem

khouly
 

But I have to use S-parameter to measure Zin.
 

yeah , but S paramter simulation , it is very normal to use
 

But it keeps giving me the error that I have written above. I have attached the circuit. I appreciate your help. Just could you please tell me how you have figured out the operating region using ADS?
 

yeah , it gives u this coz u r sweeping the DC , so there is no one operating point , its a sweep

to be able to get all the data , don't sweep the voltage make it single point

to know the region , get the Vdsat , and see if ur VDS is large than it


khouly
 

    Sadegh.j

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