A CPW-fed planar log-periodic dipole antenna with suppressed cross polarization

Author

Lin, Keng-Chih ; Lin, Yi-Cheng

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2010

fDate

11-17 July 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, a novel CPW-fed PLPDA is proposed. The antenna exhibits a fixed phase center and good cross-polarization discrimination. And the stripline structure is employed to suppress the cross-polarization level. In order to realize a fully planar structure, a conductor-backed CPW feed is co-design with the stripline with the feed port located at the edge of the PCB antenna. The optimization on the balun offset length is performed to improve the pattern stability that the maximum gain is directed to the zenith over the wide frequency range.

Keywords

antenna feeds; antenna radiation patterns; baluns; coplanar waveguides; dipole antennas; electromagnetic wave polarisation; log periodic antennas; microstrip antennas; optimisation; planar antennas; strip lines; CPW-fed planar log periodic dipole antenna; PCB antenna; balun offset length; conductor-backed CPW feed; cross polarization suppression; fully planar structure; optimization; pattern stability; stripline structure; Coplanar waveguides; Dipole antennas; Feeds; Frequency measurement; Impedance matching; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE

Conference_Location

Toronto, ON

ISSN

1522-3965

Print_ISBN

978-1-4244-4967-5

Type

conf

DOI

10.1109/APS.2010.5562196

Filename

5562196