A 24-GHz Butler-Matrix-Based Switched Beamformer in GaAs

Qing Yi Jiang, Yo Shen Lin

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

1 Scopus citations

Abstract

A 24-GHz switched beamformer in GaAs for a 4-element linear antenna array is proposed, which is composed of an absorptive SP4T switch and a 4×4 Butler matrix. Through the utilization of slow-wave microstrip lines and bridged-T coils, a compact chip size of 2 mm × 2 mm is achieved. The measured insertion loss at 24 GHz is within 11.16±0.95 dB and the measured phase error is less than 6° for the four beam states.

Original languageEnglish
Title of host publication2021 IEEE MTT-S International Microwave Symposium, IMS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages534-537
Number of pages4
ISBN (Electronic)9781665403078
DOIs
StatePublished - 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

  • Absorptive switch
  • Butler matrix
  • beamformer
  • bridged-T coil
  • slow-wave microstrip line

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