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

Publication
IEICE TRANSACTIONS on Electronics   Vol.E104-C    No.10    pp.526-533
Publication Date: 2021/10/01
Publicized: 2021/05/13
Online ISSN: 1745-1353
DOI: 10.1587/transele.2021MMI0008
Type of Manuscript: Special Section INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
5G,  beyond 5G,  high power amplifier,  base-station,  Doherty amplifier,  digital power amplifier,  

Full Text: FreePDF(2.6MB)

Summary: 
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.