High efficiency GaN 2.5 to 9 GHz power amplifiers realized in multilayer LCP hybrid technology

Powell, J. R., Shepphard, Daniel and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2016. High efficiency GaN 2.5 to 9 GHz power amplifiers realized in multilayer LCP hybrid technology. IEEE Microwave and Wireless Components Letters 26 (6) , pp. 440-442. 10.1109/LMWC.2016.2559502

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Abstract

This letter presents wide bandwidth and high efficiency hybrid balanced and push-pull amplifier circuit topologies using Gallium Nitride (GaN) transistors and Liquid Crystal Polymer (LCP) multilayer circuit techniques. Push-pull circuit configurations allow differential and common mode impedances to be presented at even and odd harmonics independently, enabling the continuous mode (class BJ) design space to be exploited. Push-pull amplifiers display drain efficiencies > 40%, output power > 5 W over a bandwidth of 3.5 to 8.5 GHz at 2 dB compression levels, and under CW conditions. By comparison, although designed with identical performance goals, a conventional quadrature balanced amplifier performance is below that of the push-pull configuration.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher:	IEEE
ISSN:	1531-1309
Date of Acceptance:	8 March 2016
Last Modified:	21 Oct 2022 07:03
URI:	https://orca.cardiff.ac.uk/id/eprint/99042

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