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How to see the Devices/Instances contributing to the circuit Noise Figure in Pnoise analysis

RFStuff

Dear All,

I am using IC5141 & MMSIM14  and I am doing Pnoise simulation for my Circuit.

Can anybody please tell how  to see the Devices/Instances LIST contributing to the circuit Noise Figure in Pnoise analysis.

Kind Regards,

  • The Results->Print->Noise Summary will tell you the contributors to the output noise. Provided you exclude the noise in the source, and the noise in the load, the ranking of the contributions should essentially be the same - it's just not showing you it as a proportion of noise figure. Since the noise factor is (totalNoiseAtOutput-noiseAtOutputFromLoad)/noiseAtOutputFromInputPort you could always transform those numbers if needed (probably overkill though - just looking at the noise summary out to be enough, unless I'm not understanding you correctly).

    Regards,

    Andrew.

  • Dear Andrew,

    Thanks for your reply.

    I add the TOP INSTANCE in the NOISE-OFF option.

    But still I am getting a SSB-NF figure of 7.34dB and in the Noise summary I am not seeing any component.

    Could you please tell what may be the cause ?

  • I think one of your other posts supersedes this one, and I answered that a few minutes ago (sorry for the delay - I've got very behind due to a rather busy couple of months in my day job).

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