Dual-band class J power amplifier at 2.45 and 5.8 GHz for UAVs communications

Morales-Fernandez, Ainhoa, Fernandez-Barciela, Monica, Isasi-Vicente, Fernando, Martin-Rodriguez, Fernando and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. Dual-band class J power amplifier at 2.45 and 5.8 GHz for UAVs communications. IEEE Access 10 , pp. 48673-48680. 10.1109/ACCESS.2022.3172475

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Abstract

A hybrid dual-band power amplifier (PA) prototype working at two Industrial, Scientific and Medical (ISM) bands, 2.4-2.5 GHz and 5.725-5.875 GHz, was designed for Unmanned Aerial Vehicles (UAVs) communication applications in Spain. Initially, two single-band PA prototypes centered at each band were designed to evaluate the single-band achievable RF performance. In all the PAs, the Gallium Nitride (GaN) Qorvo HEMT TGF2977-SM was used, as well as microstrip transmission lines technology. To achieve wideband, good linearity and efficiency, the PAs were designed in class J. The measured results for the dual-band PA prototype at the 2dB compression point at the lower and higher bands, respectively, are 14.8 dB and 11.2 dB of Transducer Power Gain ( GT ), 35.7 dBm and 34.8 dBm of RF output power (Pout) and 59.2% and 43.5% of Drain Efficiency ( η ). At 3dB compression the respective lower and higher bands results are 37.9 dBm and 37 dBm of Pout and 73.9% and 55% of η .

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Additional Information:	This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher:	Institute of Electrical and Electronics Engineers
ISSN:	2169-3536
Date of First Compliant Deposit:	26 May 2022
Date of Acceptance:	24 April 2022
Last Modified:	08 May 2023 23:23
URI:	https://orca.cardiff.ac.uk/id/eprint/149916

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