How does spectre handle noise from s-parameter nport device?

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ezbentley

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I am running noise simulation and it indicates that some of the major noise contribution comes from various s-parameter models in my circuit. How does spectre calculate the noise of those models? Technically s-parameter model does not contain any information about noise.
 

Re: How does spectre handle noise from s-parameter nport dev

The circuit simulator will use a representative input noise source and consider all the circuits as noiseless. S-parameter equipment will use some white noise source as a frequency-sweep input source.
 

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