Modeling the Nonlinear Response of Multitones With Uncorrelated Phase

Traditional simulation approaches for predicting the frequency-domain response of nonlinear devices to multiple tone excitation enforce correlation of the phases of the individual tones. This is the case with time-domain simulators and transform-based schemes such as Harmonic balance as the waveform...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 2007-10, Vol.55 (10), p.2147-2156
Hauptverfasser: Hart, F.P., Steer, M.B.
Format: Artikel
Sprache:eng
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Zusammenfassung:Traditional simulation approaches for predicting the frequency-domain response of nonlinear devices to multiple tone excitation enforce correlation of the phases of the individual tones. This is the case with time-domain simulators and transform-based schemes such as Harmonic balance as the waveform must be single valued, thus enforcing correlation. Previous efforts in frequency-domain simulators using the arithmetic operator method (AOM) also produced results in good agreement with measurements for correlated-phase input signals. Here, the AOM is applied to directly determine the spectral response of nonlinear systems to excitation by multiple uncorrelated tones in a single simulation. Verification is provided using measurements of a nonlinear amplifier excited by 15 independent tones and comparison to the average of the ensemble of results from multiple correlated-phase simulations.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2007.906462