Low-Cost Gap Waveguide Technology Using Shallow Grooves and Glide-Symmetric Semicircular-Holes EBG Structures

Wenhao Tan, Yijing He*, Hao Luo, Guoqiang Zhao, Houjun Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this letter, a novel electromagnetic bandgap (EBG) structure is proposed to manufacture gap waveguides (GWs) at high frequencies. The proposed EBG structure combines parallel shallow grooves and glide-symmetric semicircular holes, located on the upper and lower plate, respectively. Attributed to much-reduced milling depth, an efficient and easier manufacturing process can be realized for the proposed structure. Besides, the layout of the milling grooves can be flexibly adapted, making the proposed EBG structure more easily conformal with GWs. As a validation of the concept, both straight and bent side-by-side GWs exploring the proposed EBG structure are elaborately designed, fabricated, and experimentally tested, verifying the features of low loss and high isolation, respectively.

Original languageEnglish
Article number3303864
Pages (from-to)2901-2905
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume22
Issue number12
DOIs
Publication statusPublished - 1 Dec 2023

Keywords

  • Electromagnetic bandgap (EBG) structure
  • gap waveguide (GW) technology
  • glide symmetry
  • millimeter-waves
  • soft surface

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