Circularly polarized open-loop antenna

Author

Li, Rong-Lin ; Fusco, Vincent F. ; Nakano, H.

Author_Institution

Sch. of Electr. & Electron. Eng., Queens Univ., Belfast, UK

Volume

51

Issue

9

fYear

2003

fDate

9/1/2003 12:00:00 AM

Firstpage

2475

Lastpage

2477

Abstract

A printed circular open-loop antenna is introduced as a simple structure for producing circular polarization; the antenna is fed with a coaxial probe. By introducing a gap within the circular loop a traveling-wave current is excited and thus circularly polarized radiation can be achieved. An optimized circularly polarized antenna is designed through numerical analysis using a so-called parametric method of moment technique. Experimental verification of the new antenna is presented. The antenna has a 3-dB axial ratio bandwidth of 12% with an input VSWR of less than 2.

Keywords

antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; loop antennas; method of moments; microstrip antennas; optimisation; circular polarization; circularly polarized radiation; coaxial probe feed; numerical analysis; open-loop antenna; optimized antenna; parametric method of moments; printed antenna; traveling-wave current excitation; Bandwidth; Coaxial components; Current distribution; Design optimization; Geometry; Moment methods; Polarization; Probes; Receiving antennas; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2003.809845

Filename

1229919