Experimental characterization of a dual-input OLMBA for back-off efficiency improvement

Urvoy, Jean-Baptiste, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Powell, Jeff R. and Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X 2023. Experimental characterization of a dual-input OLMBA for back-off efficiency improvement. Presented at: 53rd European Microwave Conference (EuMC), Berlin, Germany, 19-21 September 2023. Proceedings of 53rd European Microwave Conference. IEEE, pp. 267-270. 10.23919/EuMC58039.2023.10290592

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Abstract

This paper describes the characterization campaign carried out on an Orthogonal Load Modulated Balanced Amplifier with separate RF inputs aimed at optimizing back-off efficiency over a broad frequency range. The steps used to narrow down the set of available parameters, using single-input characterization, and identify the optimal conditions for dual-input drive, are described in detail. The hardware shows a 6-dB back-off efficiency in excess of 35% on most of the 1.6-3.0 GHz bandwidth, with a corresponding maximum output power of at least 45 dBm. This shows that the use of the OLMBA for back-off enhancement has great potential.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	9798350347395
Last Modified:	19 Dec 2023 12:31
URI:	https://orca.cardiff.ac.uk/id/eprint/164714

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