Overview and Prospects of high power amplifier technology trend for 5G and beyond 5G base stations

Koji YAMANAKA; Shintaro SHINJO; Yuji KOMATSUZAKI; Shuichi SAKATA; Keigo NAKATANI; Yutaro YAMAGUCHI

doi:10.1587/transele.2021MMI0008

This article has now been updated. Please use the final version.

Overview and Prospects of high power amplifier technology trend for 5G and beyond 5G base stations

Koji YAMANAKA, Shintaro SHINJO, Yuji KOMATSUZAKI, Shuichi SAKATA, Keigo NAKATANI, Yutaro YAMAGUCHI

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Keywords: 5G, beyond 5G, high power amplifier, base-station, Doherty amplifier, digital power amplifier

JOURNAL FREE ACCESS Advance online publication

Article ID: 2021MMI0008

DOI https://doi.org/10.1587/transele.2021MMI0008

The final version of this article is now available: Vol. E104.C (2021), No. 10 pp. 526-533

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Abstract

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.

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