Design of a Compact Circular Waveguide Antenna of Low Polarization Level using EBG Structures

Authors

  • Josefa Gómez Computer Sciences Department University of Alcalá, 28871 Alcalá de Henares (Madrid), Spain
  • Abdelhamid Tayebi Computer Sciences Department University of Alcalá, 28871 Alcalá de Henares (Madrid), Spain
  • Iván González Computer Sciences Department University of Alcalá, 28871 Alcalá de Henares (Madrid), Spain
  • Felipe Cátedra Computer Sciences Department University of Alcalá, 28871 Alcalá de Henares (Madrid), Spain

Keywords:

Design of a Compact Circular Waveguide Antenna of Low Polarization Level using EBG Structures

Abstract

A new technique to improve the performance, in terms of bandwidth, gain and polarization purity, of conventional circular waveguide antennas using an electromagnetic band gap (EBG) structure is presented. The proposed antenna is composed by a circular waveguide and two layers with squared holes located over the waveguide aperture. The dimensions of the antenna have been obtained by means of an optimization process that uses a rigorous analysis tool. According to the results, a notable enhancement in polarization purity and gain is demonstrated when incorporating the second grid. The EBG antenna has the peak gain 14.36 dBi and the cross polarization level is lower than 40 dB within a wide bandwidth of 17%. A prototype has been fabricated and measured operating at 9.1GHz.

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Published

2022-05-02

How to Cite

[1]
J. . Gómez, A. . Tayebi, I. . González, and F. . Cátedra, “Design of a Compact Circular Waveguide Antenna of Low Polarization Level using EBG Structures”, ACES Journal, vol. 26, no. 5, pp. 375–382, May 2022.

Issue

2011: Vol 26 Iss 5

Section

General Submission