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Using .PWL for Input waveform for doing PSS (shooting method) & Pnoise

RFQuery over 12 years ago

Dear All,

I was trying to simulate my circuit (using PSS/PNOISE) which has mixer for downconversion.

The clock for the mixers are coming from another circuit block.

When I simulate with my clock source circuit it takes a lot of time to simulate the PSS.

So I want to simulate the clock source separately and capture the output waveform in a .PWL file.

This .PWL file I want to feed the main circuit for doing PSS/PNOISE analysis.

I am confused how it will work. Can anybody tell how this way of simulation will work with PSS/PNOISE. How this will affect the accuracy of the PSS/PNOISE simulation.

Kind Regards,

Tawna over 12 years ago

Hi RFQuery,

If you want to use a PWL source in your circuit, you should look at Chapter10 of the MMSIM 12.1 (note the version!) of the SpectreRF User Guide.

Below is a link (you must have a Cadence Online Support account to view this.)

http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=pubs;q=/spectreRF/spectreRF12.1/Chap10.html

There are caveats of which you should be aware. This document will tell you how to do it.

Best regards,
Tawna
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RFQuery over 12 years ago

Dear Tawna,
Thanks a lot.
Kind Regards
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