A Concept of Pattern-Reconfigurable Single-Element Antenna Based on Half-Mode Substrate-Integrated Cavity

Feng-Xue Liu, Wen-Bin Dou, Jie Cui, Shengjian Jammy Chen, Christophe Fumeaux

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

Abstract

A concept of pattern-reconfigurable singleelement antenna operating at 2.45 GHz is proposed in this paper. The antenna consists of two back-to-back half-mode substrate-integrated cavities with switchable shortings at both radiation apertures. One of the cavities is fed by an SMA probe while the other cavity is excited by the coupling through an aperture on the shared sidewall. This leads to the excitation of an even and an odd mode in the coupled cavities. Changing the states of the two switchable shortings leads to the switching between the even and odd coupled modes, which reconfigures the radiation pattern, and changes the main beam direction. The measured results on a fabricated prototype where the switches are mimicked by retractable screws validate the concept and illustrate that the main beam can be steered in the direction of either θ =12° or 36°.

Original languageEnglish
Title of host publication14th European Conference on Antennas and Propagation, EuCAP 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9788831299008
DOIs
Publication statusPublished - Mar 2020
Externally publishedYes

Publication series

Name14th European Conference on Antennas and Propagation, EuCAP 2020

Keywords

  • coupled modes
  • half-mode substrate-integrated cavity antenna
  • pattern reconfiguration
  • shorting pin

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