A dipole-fed multi-polarization spiral antenna including a coaxial feeding element

Author

Matsunaga, Motoshi

Author_Institution

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

fYear

2013

fDate

8-12 April 2013

Firstpage

3970

Lastpage

3973

Abstract

A multi-polarization spiral antenna including a transforming element from coaxial cable is presented in this paper. The spiral antenna radiates circularly and linearly polarized waves simultaneously at three bands. Moreover, the antenna does not need an impedance converter and balun, even though it is fed by using a coaxial cable. In this paper, the return-loss characteristics and radiation patterns of the antenna are delineated for showing that the antenna not only can be fed directly by a coaxial cable without any baluns and impedance converters but also can be used in a GPS band as well as mobile bands.

Keywords

antenna feeds; antenna radiation patterns; baluns; coaxial cables; dipole antennas; impedance convertors; multifrequency antennas; polarisation; spiral antennas; GPS band; antenna radiation patterns; balun; coaxial cable; coaxial feeding element; dipole-fed multipolarization spiral antenna; impedance converters; mobile band; return loss characteristics; transforming element; Antenna radiation patterns; Coaxial cables; Dipole antennas; Feeds; Spirals; GPS; loop antennas; mobile phones; multi-frequency; multi-polarization; small antennas; spiral antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2013 7th European Conference on

Conference_Location

Gothenburg

Print_ISBN

978-1-4673-2187-7

Electronic_ISBN

978-88-907018-1-8

Type

conf

Filename

6547057