Class-J RF power amplifier with wideband harmonic suppression

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Title: Class-J RF power amplifier with wideband harmonic suppression
Authors: Tuffy, NealZhu, AndingBrazil, Thomas J.
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Date: 10-Jun-2011
Online since: 2021-03-31T11:29:23Z
Abstract: This work outlines a design approach used for achieving highly efficient power amplification over a wide bandwidth, given narrowband passive harmonic load-pull results at a single center frequency. Specific considerations have been given to harmonic suppression concerns which are addressed by appropriate choice of matching network topology. The method is justified by amplifier fabrication using a commercially available 10W GaN HEMT transistor and achieving an efficiency of at least 60% over a 15% bandwidth from 2.3-2.7GHz. Output power between 10-12W was delivered across the band, centered at 2.5GHz. Harmonic suppression of at least -41dBc and -39dBc was obtained across the second and third harmonic bands respectively, largely removing the dependency on post-filtering.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2011 IEEE
Keywords: Class-JHarmonic suppressionHigh efficiencyPower amplifier
DOI: 10.1109/MWSYM.2011.5972873
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Language: en
Status of Item: Peer reviewed
Is part of: 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011
Conference Details: The 2011 IEEE MTT-S International Microwave Symposium, Baltimore, Maryland, United States of America, 5-10 June 2011
ISBN: 9781612847566
ISSN: 0149-645X
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Appears in Collections:Electrical and Electronic Engineering Research Collection

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