A novel MEMS-based CPW-fed slot antenna for broadband circular polarization and unidirectional radiation

Weiqiang Chen, Guifu Ding, Zhijuan Su, Binhong Li

Research output: Contribution to journalArticlepeer-review

Abstract

A novel CPW-fed millimeter wave slot antenna for broadband circular polarization and unidirectional radiation with multilayer 3D structures is discussed. The antenna is fabricated based on micro-electro-mechanical systems micro-fabrication technology. Through a special short-circuiting stub perturbation method, the circular ring slot antenna generates circularly polarized radiation and achieves a broad impedance bandwidth of 20% with voltage standing-wave ratio (VSWR) ≤ 2 and circularly polarized bandwidth of 17.6% with AR ≤ 3 dB. By adding a special wave guiding slot structure and wave cutoff slot structure, a novel approximate perfect magnetic conductor surface, the antenna radiates unidirectionally and the peak gain increases from about 5.2 dB to 7.5 dB.

Original languageEnglish (US)
Pages (from-to)2352-2359
Number of pages8
JournalJournal of Micromechanics and Microengineering
Volume17
Issue number11
DOIs
StatePublished - Nov 1 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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