S-parameter theory in Cadence

Discussion in 'Cadence' started by Arik Zafrany, Jun 9, 2010.

  1. Arik Zafrany

    Arik Zafrany Guest

    Hi,

    Does anyone knows where can I find a manual or an explanation on how
    Spectre computes the S parameters of a circuit?
    I need to know why GT (transducer gain) is equal to S21 in cadence.

    Thanks,
    Arik
     
    Arik Zafrany, Jun 9, 2010
    #1
  2. Arik Zafrany wrote, on 06/09/10 11:38:
    Hi Arik,

    Good to meet you today. Anyway, the definition of what is done is in
    <MMSIMinstDir>/doc/spectreRF/spectreRF.pdf (Chapter 20 in my case, called
    "Plotting Spectre S-Parameter Simulation Data").

    It says that plotting GT from the direct plot form will give |S21|^2 because it
    assumes that the source and load reflection coefficients are zero. It gives the
    full equation for Transducer Gain in the same section, and if you use the
    Calculator to plot GT you should be able to specify the source and load
    terminations.

    Best Regards,

    Andrew.
     
    Andrew Beckett, Jun 29, 2010
    #2
  3. Arik Zafrany

    Eric Guest

    Thank you Andrew :)
     
    Eric, Jul 1, 2010
    #3
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