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High efficiency power amplifiers for modern mobile communications: The load-modulation approach

Ramella, Chiara, Piacibello, Anna, Quaglia, Roberto, Camarchia, Vittorio and Pirola, Marco 2017. High efficiency power amplifiers for modern mobile communications: The load-modulation approach. Electronics 6 (4) , 96. 10.3390/electronics6040096

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Abstract

Modern mobile communication signals require power amplifiers able to maintain very high efficiency in a wide range of output power levels, which is a major issue for classical power amplifier architectures. Following the load-modulation approach, efficiency enhancement is achieved by dynamically changing the amplifier load impedance as a function of the input power. In this paper, a review of the widely-adopted Doherty power amplifier and of the other load-modulation efficiency enhancement techniques is presented. The main theoretical aspects behind each method are introduced, and the most relevant practical implementations available in recent literature are reported and discussed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: MDPI
ISSN: 2079-9292
Date of First Compliant Deposit: 16 July 2018
Date of Acceptance: 9 November 2017
Last Modified: 16 Jul 2018 14:15
URI: http://orca-mwe.cf.ac.uk/id/eprint/112464

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