A Symmetric Wideband Doherty Power Amplifier for the n78 - 5G NR Frequency Band

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Abstract

This paper describes the design of a wideband Doherty power amplifier for fifth generation mobile network applications in sub-6 GHz frequency bands. The presented symmetric design uses different drain-supply voltages for the main and peaking amplifiers to achieve high efficiency at deep power back-off levels. The advantages and disadvantages over conventional asymmetric designs are discussed focusing on the case of wideband Doherty power amplifiers. A new Doherty com-biner is proposed which equalises the impedance transformation ratio between the back-off and peak power points. Finally, a proof-of-concept prototype is developed which can achieve higher than 50% drain efficiency for power levels between peak output power and 8 dB power back-off, for the frequency range between 3.3 GHz and 3.8 GHz.
Original languageEnglish
Title of host publication2022 18th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
PublisherIEEE Xplore
Pages268-273
Number of pages6
ISBN (Print)978-1-6654-6976-0
DOIs
Publication statusPublished - 12 Oct 2022
Event8th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob): WiMob 2022 - Thessaloniki, Greece
Duration: 10 Oct 202212 Oct 2022

Conference

Conference8th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
Abbreviated titleWiMob 2022
Period10/10/2212/10/22

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