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What is the USE of No of Harmonics/maxacfrequency if one does simulation for IIP3/P1dB

RFQuery

 Dear All,

 Can anybody please tell "What is the USE of No of Harmonics/maxacfrequency if one does simulation for IIP3/P1dB" in PSS analysis.
Parents

  • As Tawna said, you didn't mention whether you are using harmonic balance or shooting. With harmonic balance, if you don't have enough harmonics to represent the harmonic content of the signals, the energy from the missing harmonics can leak into the harmonics you've chosen, compromising the accuracy. With shooting that doesn't happen because it is simulated in the time domain, but it tends not to be so good at simulating circuits with extremely high dynamic range (such as IIP2/IIP3 simulations where the input power was low).

    Regards,

    Andrew.

Reply

  • As Tawna said, you didn't mention whether you are using harmonic balance or shooting. With harmonic balance, if you don't have enough harmonics to represent the harmonic content of the signals, the energy from the missing harmonics can leak into the harmonics you've chosen, compromising the accuracy. With shooting that doesn't happen because it is simulated in the time domain, but it tends not to be so good at simulating circuits with extremely high dynamic range (such as IIP2/IIP3 simulations where the input power was low).

    Regards,

    Andrew.

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