A 1.8–2.3 GHz broadband Doherty power amplifier with a minimized impedance transformation ratio

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Title: A 1.8–2.3 GHz broadband Doherty power amplifier with a minimized impedance transformation ratio
Authors: Yang, Mengsu
Xia, Jing
Zhu, Anding
Permanent link: http://hdl.handle.net/10197/10243
Date: 9-Dec-2015
Online since: 2019-05-01T10:11:13Z
Abstract: In this paper, the design and measurement results of a 1.8 GHz to 2.3 GHz broadband Doherty power amplifier (DPA) are reported. A modified load modulation network is designed to minimize impedance transformation ratio over the entire dynamic range for the purpose of extending the operating bandwidth. Experimental results show that the drain efficiency of the proposed DPA maintains above 50% and 63% with continuous wave input signal powers of 26 dBm and 34 dBm, respectively, from 1.8 GHz to 2.3 GHz. When stimulated by a 60-MHz, 12- carrier UMTS signal at 2.14 GHz, the proposed DPA achieved an average efficiency of 53% at 7.6 dB back-off, while the corresponding adjacent channel leakage ratio is linearized to -48.4 dBc with digital predistortion.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2015 IEEE
Keywords: Doherty power amplifiersBroadband power amplifiersDigital predistortionHigh-efficiency amplifiers
DOI: 10.1109/apmc.2015.7411667
Language: en
Status of Item: Not peer reviewed
Is part of: 2015 Asia-Pacific Microwave Conference Proceedings
Conference Details: The 2015 Asia-Pacific Microwave Conference (APMC), Nanjing, China, 6-9 December 2015
ISBN: 978-1-4799-8765-8
Appears in Collections:Electrical and Electronic Engineering Research Collection

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