A 258-GHz CMOS Transmitter with Phase-Shifting Architecture for Phased-Array Systems

Toyoyuki Hagiwara, Natsu Yamaki, Koki Sekine, Hajime Sakai, Kenta Sahara, Kyoya Takano, Shinsuke Hara, Sangyeop Lee, Ruibing Dong, Satoru Tanoi, Shunichi Kubo, Satoshi Miura, Akifumi Kasamatsu, Takeshi Yoshida, Shuhei Amakawa, Kunio Sakakibara, Yohtaro Umeda, Minoru Fujishima

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a 258-GHz CMOS transmitter with phase-shifting capability for phased-array systems targeting sixth-generation mobile network (6G). Phase shifters are inserted in local oscillator (LO) paths to limit the bandwidth required of the phase shifters. A power detector is used to detect and calibrate the phase difference between a pair of phase shifters in the two power-combined paths of the transmitter. It is fabricated using a 40-nm CMOS technology. A data rate of 16 Gb/s and output power of-6.8 dBm are achieved with quaternary phase-shift keying (QPSK). The calibration procedure of the phase shifters is verified by simulation.

Original languageEnglish
Title of host publication2021 IEEE MTT-S International Microwave Symposium, IMS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages705-708
Number of pages4
ISBN (Electronic)9781665403078
DOIs
Publication statusPublished - 7 Jun 2021
Event2021 IEEE MTT-S International Microwave Symposium, IMS 2021 - Virtual, Atlanta, United States
Duration: 7 Jun 202125 Jun 2021

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2021-June
ISSN (Print)0149-645X

Conference

Conference2021 IEEE MTT-S International Microwave Symposium, IMS 2021
Country/TerritoryUnited States
CityVirtual, Atlanta
Period7/06/2125/06/21

Keywords

  • 300-GHz band
  • CMOS
  • phase shifter
  • sixth-generation mobile network (6G)
  • terahertz
  • transmitter

Fingerprint

Dive into the research topics of 'A 258-GHz CMOS Transmitter with Phase-Shifting Architecture for Phased-Array Systems'. Together they form a unique fingerprint.

Cite this