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    Nonlinearity Modeling of Chireix Outphasing Power Combiner under Amplitude Imbalance


    Afanasyev, Pavel and Ramabadran, Prasidh and Farrell, Ronan and Dooley, John (2019) Nonlinearity Modeling of Chireix Outphasing Power Combiner under Amplitude Imbalance. In: 2019 17th IEEE International New Circuits and Systems Conference (NEWCAS). IEEE, pp. 1-4. ISBN 9781728110318

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    Abstract

    This work proposes a concise standalone model for Chireix power combiner. The model is based on the analysis of the nonlinear behaviour of a Chireix power combiner under amplitude imbalance. The generalised equations for input impedance of Chireix combiner branches excited by signals with different amplitudes have been derived. The results predicted by the model were validated using both commercial high frequency circuit simulations and experimentally measured results. As a result the proposed model serves two purposes. For one it can be used directly in a larger circuit simulation to predict the performance of an outphasing power amplifier. It can also be used as the basis for a linearization strategy for outphasing power amplifiers.

    Item Type: Book Section
    Additional Information: Cite as: P. Afanasyev, P. Ramabadran, R. Farrell and J. Dooley, "Nonlinearity Modeling of Chireix Outphasing Power Combiner Under Amplitude Imbalance," 2019 17th IEEE International New Circuits and Systems Conference (NEWCAS), Munich, Germany, 2019, pp. 1-4, doi: 10.1109/NEWCAS44328.2019.8961240.
    Keywords: behavioral modelling; outphasing amplifier; power amplifiers; nonlinear circuit; Chireix;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 14220
    Identification Number: https://doi.org/10.1109/NEWCAS44328.2019.8961240
    Depositing User: Ronan Farrell
    Date Deposited: 22 Mar 2021 14:39
    Publisher: IEEE
    Refereed: Yes
    URI:

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