A dual-polarization single-layered antenna for GPS and ISM bands

Author

Matsunaga, Mayumi ; Matsunaga, Toshiaki

Author_Institution

Dept. of Electr. & Electron. Eng., Ehime Univ., Matsuyama, Japan

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

A novel planer antenna which radiates dual polarized waves at two frequencies is presented in this paper. A combination of a dipole and spiral antenna gave the antenna that radiates circularly polarized waves at a GPS band, 1.5 GHz, and linear polarized waves at an ISM band, 2.45 GHz. The most attractive points of this antenna are that its structure is a single layer, is fed by only one port, and it does not need any phase-shifters for radiating circularly polarized waves. The performances of the antenna have been improved compared with our conventional single layered dual polarization antenna. Simulation results of return loss, radiation patterns and axial ratio of the antenna are delineated.

Keywords

Global Positioning System; dipole antennas; spiral antennas; GPS band; ISM bands; dipole antenna; dual polarization antenna; dual polarization single layered antenna; dual polarized waves; linear polarized waves; phase shifters; planer antenna; radiation pattern; spiral antenna; Dipole antennas; Global Positioning System; Periodic structures; Polarization; Simulation; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6349182

Filename

6349182