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Overview and Prospects of High Power Amplifier Technology Trend for 5G and beyond 5G Base Stations
IEICE TRANSACTIONS on Electronics
Publication Date: 2021/10/01
Online ISSN: 1745-1353
Type of Manuscript: Special Section INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
5G, beyond 5G, high power amplifier, base-station, Doherty amplifier, digital power amplifier,
Full Text: FreePDF(2.6MB)
High power amplifier technologies for base transceiver stations (BTSs) for the 5th generation (5G) mobile communication systems and so-called beyond 5G (B5G) systems are reviewed. For sub-6, which is categorized into frequency range 1 (FR1) in 5G, wideband Doherty amplifiers are introduced, and a multi-band load modulation amplifier, an envelope tracking amplifier, and a digital power amplifier for B5G are explained. For millimeter wave 5G, which is categorized into frequency range 2 (FR2), GaAs and GaN MMICs operating at around 28GHz are introduced. Finally, future prospect for THz GaN devices is described.