An Interpretative Study on Circularly Polarized Patch Antenna Using Artificial Ground Structure

Author

Maruyama, Shoichi ; Fukusako, Takeshi

Author_Institution

Dept. of Comput. Sci. & Electr. Eng., Kumamoto Univ., Kumamoto, Japan

Volume

62

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

5919

Lastpage

5924

Abstract

This communication presents some interpretative studies on a circularly polarized broadband patch antenna using an artificial ground structure (AGS). This patch antenna has a broadband characteristics in both impedance and axial ratio, which are more than 20% and 40%, respectively. The principle to expand the 3-dB axial ratio characteristics is discussed using a combination of circularly polarized patch antenna and an AGS polarizer. Furthermore, a broadband matching method using an extended outer conductor of coaxial cable is discussed. The mechanism of the matching structure is also discussed.

Keywords

broadband antennas; coaxial cables; conductors (electric); microstrip antennas; artificial ground structure polarizer; broadband antenna; broadband matching; circularly polarized patch antenna; coaxial cable; conductor; Broadband antennas; Broadband communication; Conductors; Impedance; Patch antennas; Resonant frequency; Substrates; Artificial ground structure (AGS); artificial magnetic conductor (AMC); axial ratio; broadband antenna; circular polarization; matching; microstrip patch antenna; polarizer;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2014.2357431

Filename

6897931