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Simulators >> RF Simulators >> How to find the Phase Noise for the DIVIDER
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Message started by Ricky Chen on Mar 25^th, 2012, 9:01pm

Title: How to find the Phase Noise for the DIVIDER
Post by Ricky Chen on Mar 25^th, 2012, 9:01pm

Dear all,

I want to simulate the phase noise of my divider which take input differential clock source (ideal). Some phase recombinations circuits after the divider give me multiple phase outputs. I want to see the phase noise of each phase output

Can any body tell how can I do the phase noise simulation of my divider. ( please point to any suitable documents)

I want to do following simulations with the divider

1) simulate without any phase noise in the clock

2) simulate with certain amount phase noise in the clock

3) Lastly, I want to make some trasnsistors of the divider NOISELESS and then do the phase noise simulation

I could make the flicker noise of desired MOS transistors zero but How can I make their thermal NOISe zero.

Title: Re: How to find the Phase Noise for the DIVIDER
Post by Frank Wiedmann on Mar 26^th, 2012, 2:31am

I'm not sure if this is possible. However, if you are using Cadence, you should be able to get all the information you need with a single simulation run by using the Noise Summary feature of ADE.

Title: Re: How to find the Phase Noise for the DIVIDER
Post by Frank Wiedmann on Mar 28^th, 2012, 5:03am

Andrew Beckett has just pointed out at http://www.cadence.com/community/forums/T/22011.aspx that it is in fact possible in Spectre to turn off or on the noise of specified devices.