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IQ_DemodTuned (I/Q Demodulator, Tuned)


Available in ADS

Parameters

Name

Description

Units

Default

Fnom

Nominal input frequency

GHz

1

Rout

Output resistance

Ohm

50

Notes/Equations
  1. This is a tuned demodulator that selects the input harmonic closest to the specified Fnom frequency and generates two baseband output signals equal to the instantaneous in-phase and quadrature-phase components of the selected carrier frequency.
    If there is no analysis harmonic frequency close enough to the Fnom frequency, a warning is issued and the output is 0. Input impedance is infinite; output impedance is set by Rout, and is limited to a minimum value of 0.1 Ohm. The open circuit output voltages are defined simply by


    where
    k represents the value at the analysis harmonic frequency closest to the Fnom value
    0 represents the baseband component of the output voltages.
    All non-baseband output frequency components are 0.
  2. In transient and baseband envelope simulations, because the imaginary part of baseband signals is 0, this model replicates the input on the I output only.
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