A 60 GHz Hybrid Analog/Digital Beamforming Receiver with Interference Suppression for Multiuser Gigabit/s Radio Access

Koji TAKINAMI  Hiroyuki MOTOZUKA  Tomoya URUSHIHARA  Masashi KOBAYASHI  Hiroshi TAKAHASHI  Masataka IRIE  Takenori SAKAMOTO  Yohei MORISHITA  Kenji MIYANAGA  Takayuki TSUKIZAWA  Noriaki SAITO  Naganori SHIRAKATA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.7   pp.856-865
Publication Date: 2016/07/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.856
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
IEEE 802.11ad,  WiGig,  60 GHz,  direct conversion,  CMOS,  beamforming,  interference suppression,  interference rejection combining,  

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Summary: 
This paper presents a 60 GHz analog/digital beamforming receiver that effectively suppresses interference signals, targeting the IEEE 802.11ad/WiGig standard. Combining two-stream analog frontends with interference rejection digital signal processing, the analog beamforming steers the antenna beam to the desired direction while the digital beamforming provides gain suppression in the interference direction. A prototype has been built with 40 nm CMOS analog frontends as well as offline baseband digital signal processing. Measurements show a 3.1 dB EVM advantage over conventional two-stream diversity during a packet collision situation.