A Wideband, Low-Profile, and 1-Bit Beam-Scanning Reflectarray at X-Band

Pei Ling Chi*, Shuo Ching Hung, Tao Yang

*Corresponding author for this work

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

Abstract

A 1-bit reconfigurable reflectarray with wide-angle scanning range from 9.15 GHz to 10.9 GHz is proposed in this paper. To allow wideband coverage while maintaining low profile, the unit cell loaded by one p-i-n diode was designed to optimally increase element bandwidth, i.e., the bandwidth for reflection-phase difference within 180° ± 20° between the diode's on- and off-states. To achieve greater degree of structural optimization and improvement for aperture efficiency, p-i-n diodes and the biasing network were deployed on the opposite side of phasing elements. A 10 × 10 reconfigurable reflectarray was prototyped and can experimentally scan its main beam from +40° to -40° at frequencies of 9.15, 10, and 10.9 GHz with peak gain of 14.97 dBi. The measured 1-dB bandwidth is 10.8%.

Original languageEnglish
Title of host publication2023 Asia-Pacific Microwave Conference, APMC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages435-437
Number of pages3
ISBN (Electronic)9781665494182
DOIs
StatePublished - 2023
Event31st Asia-Pacific Microwave Conference, APMC 2023 - Taipei, Taiwan
Duration: 5 Dec 20238 Dec 2023

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
ISSN (Electronic)2690-3946

Conference

Conference31st Asia-Pacific Microwave Conference, APMC 2023
Country/TerritoryTaiwan
CityTaipei
Period5/12/238/12/23

Keywords

  • 1-bit
  • beam scanning
  • linear polarization
  • p-i-n diodes
  • reconfigurable
  • reflectarray antenna
  • wideband
  • X band

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