Bandwidth and Gain Enhancement of an Aperture Antenna With Modified Ring Patch

Author

Honari, M. Mahdi ; Abdipour, Abdolali ; Moradi, Gholamreza

Author_Institution

Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1413

Lastpage

1416

Abstract

In this letter, a linear-polarized ring aperture-coupled antenna with single modified ring patch is presented. In our proposed design, the patch is applied to improve the bandwidth and gain, simultaneously. In addition, the designed feed-line shape also has a considerable effect on the bandwidth. The simulation results show that matching bandwidth with a VSWR lower than 1.5 and 1-dB gain ripple bandwidth is 34% and 42%, respectively. The peak gain of 9.2 dB and radiation efficiency above 96% over the bandwidth are achieved. There is a good agreement between simulation and measurement results. An adequate cross polarization can be obtained in the E-plane and H-plane.

Keywords

antenna feeds; aperture antennas; aperture-coupled antennas; microstrip antennas; E-plane; H-plane; VSWR; adequate cross polarization; bandwidth enhancement; bandwidth matching; feed line shape design; gain enhancement; linear-polarized ring aperture-coupled antenna; modified ring patch; radiation efficiency; Antenna radiation patterns; Bandwidth; Broadband antennas; Feeds; Gain; Patch antennas; Aperture-coupled antenna; bandwidth and gain enhancement; modified ring patch; ring aperture;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2178998

Filename

6099551