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Phase Noise simulation accuracy

Gmacera

Hi,

I am trying to simulate the phase noise of a clock receiver block. It is a complex block, but you can imagine as a cascade of various buffers which are biased by some other biasing blocks (which work in DC).

The operating frequency is 10 GHz.

I'm running a PSS with the following settings:

-beat frequency=10GHz

-oversample factor: none

-number of harmonics: 10

Accurancy defaults (errpreset): Conservative

All the other are left blank.

I'm running a PNOISE after with the following settings:

Sweeptype: Default

Start-Stop: 1k-10M

Maximum Sidebands: 10

Output: Voltage (and I selected the nodes to calculate the PN)

Input source: None

Noise Type: Sources

The question is: What is the method to verify that the phase noise I'm getting is accurate enough? Is there any parameter to change and confirm that results are the same?

  • Frank Wiedmann

    You could increase the Maximum Sidebands and see if it makes a difference.

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