PS Harmonic Estimator (Real, Imaginary)

Measure real and imaginary parts of periodic signal harmonic


Physical Signals/Periodic Operators


The PS Harmonic Estimator (Real, Imaginary) block measures real and imaginary parts of a single frequency component (harmonic) of a periodic signal.

A signal is periodic if it completes a pattern within a measurable time frame, called a period, and repeats that pattern over identical subsequent periods. The signal base frequency is the number of periods per second.

The block accepts a physical signal with one or more harmonics present. It outputs the real and imaginary parts of the signal for the selected harmonic.

To obtain meaningful results, run the simulation for at least one full time period of the signal.


Base frequency

Specify the periodic signal frequency. The default value is 60 Hz.

Harmonic number

Specify the number of harmonic within the periodic signal. The value must be a positive integer. The default value is 1.


The block has one physical signal input port and two physical signal output ports:

  • Re — Outputs the real part of the harmonic signal.

  • Im — Outputs the imaginary part of the harmonic signal.

Introduced in R2015b

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