PM_UnwrapDemodTuned (PM Unwrapped Demodulator, Tuned)
Symbol
Available in ADS
Parameters
Name |
Description |
Units |
Default |
---|---|---|---|
Sensitivity |
Demodulation sensitivity, in deg/Volt |
deg |
10 |
Fnom |
Nominal input frequency |
GHz |
1 |
MaxAngle |
Unwrapped phase angle range (+/− MaxAngle) |
deg |
3600 |
Notes/Equations
- This is a tuned demodulator that selects the input harmonic closest to the specified Fnom frequency and generates a baseband output signal equal to the instantaneous unwrapped phase 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. The input impedance is infinite. The output impedance is 0. - The phase range of this demodulator is equal to ± MaxAngle. The phase at time 0 is set equal to the normal 180° phase of the selected carrier frequency. By tracking modulo 360° phase transitions, the unwrapped phase, relative to the initial time 0 value, is calculated. The user can then set the desired modulo range with the MaxAngle parameter. A large number will generate totally unwrapped phase.
This unwrapping of phase works for time sweeps in envelope analyses; it cannot be used to unwrap the phase of frequency or other parameter sweeps. - In transient and baseband envelope simulations, this model does not generate the expected results because the imaginary part of baseband signals is 0.