Wideband and Low-Profile Omnidirectional Circularly Polarized Patch Antenna

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Y. M. Pan
  • S. Y. Zheng
  • B. J. Hu

Detail(s)

Original languageEnglish
Article number6814854
Pages (from-to)4347-4351
Journal / PublicationIEEE Transactions on Antennas and Propagation
Volume62
Issue number8
Online published13 May 2014
Publication statusPublished - Aug 2014
Externally publishedYes

Abstract

A wideband low-profile omnidirectional circularly polarized (CP) patch antenna is proposed and investigated in this communication. The design utilizes two monopolar modes of a circular patch which connects to a modified ground plane by a set of conductive vias, to achieve wide-band impedance matching. The curved branches introduced at the edge of circular ground plane excite a degenerate mode and create CP fields. To verify the design, a prototype operating at 2.4 GHz-WLAN band has been fabricated and measured. Measured reflection coefficient, axial ratio (AR), radiation pattern, and antenna gain agree well with simulation results. The proposed prototype has a low profile of 0.024λ0 , a 10-dB impedance bandwidth of 19.8% and a 3-dB AR bandwidth of 19.3%. To further characterize the design concept, a parametric study of the proposed antenna is carried out using HFSS, and general design guidelines are provided.

Research Area(s)

  • Circular polarization, low-profile antenna, omnidirectional antenna, patch antenna, wideband antenna

Citation Format(s)

Wideband and Low-Profile Omnidirectional Circularly Polarized Patch Antenna. / Pan, Y. M.; Zheng, S. Y.; Hu, B. J.

In: IEEE Transactions on Antennas and Propagation, Vol. 62, No. 8, 6814854, 08.2014, p. 4347-4351.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal