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Efficiency‐enhanced Doherty power amplifier using Chireix‐like compensation technology

Zhang, Zhiwei, Cheng, Zhiqun, Liu, Guohua, Ke, Huajie, Sun, Hao, Gao, Steven (2019) Efficiency‐enhanced Doherty power amplifier using Chireix‐like compensation technology. International Journal of RF and Microwave Computer-Aided Engineering, 29 (11). Article Number 21949. ISSN 1096-4290. (doi:10.1002/mmce.21949) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:76519)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1002/mmce.21949

Abstract

This article presents a novel efficiency‐enhanced Doherty power amplifier (DPA) by using a Chireix‐like compensation technique. This technique introduces a compensation circuit structure at the combiner to offset the phase difference effect of a DPA for enhancing drain efficiency. A DPA based on the proposed structure is fabricated with two 10 W GaN high electron mobility transistor (HEMT) transistors. The fabricated DPA with such proposed compensation structure manifests a measured saturated output power of 43.5 dBm and drain efficiency of 68% to 71% in the frequency range of 3.2 to 3.7 GHz. Forty‐five percent of drain efficiency can be achieved at 6 dB power back‐off. And the adjacent channel leakage ratio (ACLR) is better than −48.6 dBc with digital predistortion.

Item Type: Article
DOI/Identification number: 10.1002/mmce.21949
Uncontrolled keywords: Chireix-like compensation technique, Doherty power amplifier, efficiency-enhanced, phase difference
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 16 Sep 2019 13:28 UTC
Last Modified: 16 Feb 2021 14:07 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/76519 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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