A Compact RF Frontend Module of Active Phased Array Antenna for High SHF Wideband Massive MIMO in 5G

Hideyuki NAKAMIZO
Shintaro SHINJO
Koji TSUTSUMI
Satoshi YAMAGUCHI
Hideharu YOSHIOKA
Akihiro OKAZAKI
Akinori TAIRA
Kenichi TAJIMA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E100-C    No.10    pp.818-824
Publication Date: 2017/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E100.C.818
Type of Manuscript: Special Section INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
massive MIMO,  active phased array antenna,  high SHF,  RF frontend,  5G,  

Full Text: FreePDF(1.5MB)
Summary: 
In order to meet various requirements for the 5th generation mobile communication, a high SHF wideband massive-MIMO system has been widely studied which offers wide system bandwidth and high spectral efficiency. A hybrid beamforming configuration which combines analog beamforming by APAA (Active Phased Array Antenna) and digital MIMO signal processing is one of the promising approaches for reducing the complexity and power consumption of the high SHF wideband massive-MIMO system. In order to realize the hybrid beamforming configuration in high SHF band, small size, low power consumption and precise beam forming over the wide-band frequency range are strongly required for RF frontend which constitutes analog beam former. In this paper, a compact RF frontend module for high SHF wideband 5G small cell base station is proposed. This RF frontend module is prototyped. Various key components of the RF frontend module are fabricated in 15GHz band, and measured results show that high RF performances are able to meet the requirements of RF frontend.