Wide-Beam Dielectric Resonator Antennas Based on the Fusion of Higher-Order Modes

Ma Boyuan, Jin Pan, Shaode Huang, Deqiang Yang, Yongxin Guo*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

26 Citations (Scopus)

Abstract

Geometry-induced resonant modes with intrinsic broad beam coverage are synthesized within step-shaped dielectric resonator antennas (DRAs). Following the idea of mode fusion, a synthesized mode inherits and combines the modal features from several conventional ones of regular DRAs. Superior flexibility and design freedom in beam shaping are thus obtained, leading to a 3 dB beamwidth exceeding 200° in both main planes. To form such a broad-beam mode, three regular higher-order modes from rectangular DRAs are chosen and merged. Their modal radiation patterns have fine complementation, meanwhile, they are readily excited by a shared feed. To further demonstrate the mechanism of mode fusion, the modal field distribution of the presented DRAs is analyzed. A design guide is presented as well. © 2021 IEEE.
Original languageEnglish
Pages (from-to)8866-8871
JournalIEEE Transactions on Antennas and Propagation
Volume69
Issue number12
Online published25 Jun 2021
DOIs
Publication statusPublished - Dec 2021
Externally publishedYes

Research Keywords

  • Dielectric resonator antennas (DRAs)
  • higher-order modes
  • mode synthesis
  • radiation patterns
  • wide beam

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