A single-feeding circularly polarized microstrip antenna with the effect of hybrid feeding

Author

Kim, Hyungrak ; Lee, Byoung Moo ; Yoon, Young Joong

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

2

Issue

1

fYear

2003

fDate

6/25/1905 12:00:00 AM

Firstpage

74

Lastpage

77

Abstract

A single series feed cross-aperture coupled microstrip antenna with the effect of hybrid feeding is proposed and demonstrated. To understand this antenna better, the characteristics according to the variation of parameters are shown. This proposed antenna has the following advantages of the effect of hybrid feeding: improved axial ratio bandwidth (4.6%); high gain (8 dBi); flat 3 dB gain bandwidth (above 16.7%). In measured radiation patterns, we have 3 dB beamwidth of /spl plusmn/30/spl deg/ and good F/B (front to back ratio) of 20 dB.

Keywords

UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; 110 MHz; 2.4 GHz; 240 MHz; 8 dB; axial ratio bandwidth; beamwidth; circularly polarized microstrip antenna; gain; gain bandwidth; hybrid feeding; radiation patterns; series feed; Antenna feeds; Antenna radiation patterns; Bandwidth; Dielectric substrates; Global Positioning System; Microstrip antennas; Polarization; Radar antennas; Satellite antennas; Wireless communication;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2003.813382

Filename

1210750