Higher Order Mode Excitation for High-Gain Broadside Radiation From Cylindrical Dielectric Resonator Antennas

Author

Guha, D. ; Banerjee, A. ; Kumar, C. ; Antar, Y.M.M.

Author_Institution

Inst. of Radio Phys. & Electron., Univ. of Calcutta, Kolkata, India

Volume

60

Issue

1

fYear

2012

Firstpage

71

Lastpage

77

Abstract

A resonant mode (HEM_12δ), other than those ( HEM_11δ and TM_01δ) conventionally excited and used in a cylindrical dielectric resonator antenna (CDRA) has been examined with a view for using it as another radiating mode with broadside radiation patterns. Excitation of the mode, being the most challenging aspect, has been discussed and resolved by employing an innovative technique. The proposed concept has been successfully verified and experimentally demonstrated for the first time. More than 8-dBi peak gain with excellent broadside radiation has been obtained from a prototype shaped from a commercially available low-loss dielectric material with relative permittivity 10.

Keywords

antenna radiation patterns; dielectric losses; dielectric materials; resonators; CDRA; broadside radiation patterns; cylindrical dielectric resonator antennas; high-gain broadside radiation; higher order mode excitation; low-loss dielectric material; resonant mode; Antenna radiation patterns; Electric fields; Feeds; Gain; Probes; Prototypes; Resonant frequency; Cylindrical dielectric resonator antenna; dielectric resonator antenna; radiation modes in cylindrical dielectric resonators;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2167922

Filename

6018263