Circularly polarized annual ring antenna perturbed by asymmetrical defected ground structures for improved gain

S. Pyo, M. J. Lee, H. S. Lee, S. H. Kim, Y. S. Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A novel perturbing methodology using asymmetrical defected ground structure (DGS) is proposed for a circularly polarized (CP) annual ring antenna with improved antenna gain. By loading two fairs of half dumbbell-shaped DGS at four diagonal corners of the ring radiator, the orthogonally polarized modes are controlled. Simulated and measured results show that the proposed antenna demonstrates good CP radiations at the resonant frequency.

Original languageEnglish
Pages (from-to)2994-2996
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume53
Issue number12
DOIs
Publication statusPublished - 2011 Dec

Keywords

  • antenna gain
  • circular polarization
  • defected ground structure
  • microstrip annual ring antenna

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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