A Circularly Polarized Cylindrical Dielectric Resonator Antenna Using a Helical Exciter

Author

Motevasselian, Alireza ; Ellgardt, A. ; Jonsson, B.L.G.

Author_Institution

Sch. of Electr. Eng., KTH-R. Inst. of Technol., Stockholm, Sweden

Volume

61

Issue

3

fYear

2013

fDate

3/1/2013 12:00:00 AM

Firstpage

1439

Lastpage

1443

Abstract

A novel circularly polarized cylindrical dielectric resonator antenna excited by an external tape helix is presented. The helix is fed by a coaxial line through a small hole on a finite size ground plane. The configuration offers a compact and easy to fabricate feeding network providing a 3 dB axial-ratio bandwidth of 6.4%. A prototype of the proposed configuration is fabricated and measured. Measured and simulated return loss, axial-ratio, radiation pattern, and realized gain are presented and discussed together with design guidelines.

Keywords

antenna feeds; antenna radiation patterns; dielectric resonator antennas; polarisation; ήnite size ground plane; antenna radiation pattern; axial-ratio; circular polarized cylindrical dielectric resonator antenna; coaxial line; external tape helix; gain 3 dB; helical exciter; Antenna measurements; Antenna radiation patterns; Bandwidth; Dielectric constant; Dielectric resonator antennas; Helical antennas; Circular polarization; cylindrical; dielectric resonator antenna; helix; probe feed;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2229954

Filename

6361278