Application of broadband microstrip patch antenna as a perfect substitute for monopole antenna

Author

Chen, J. ; Fu, G. ; Wu, G.-D. ; Gong, S.-X.

Author_Institution

Key Nat. Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an, China

fYear

2010

fDate

8-11 May 2010

Firstpage

321

Lastpage

324

Abstract

A novel broadband omni-directional circular patch antenna is proposed to substitute for a broadband monopole antenna for its proverbial advantages. Considering the inherent narrow bandwidth of conventional microstrip patch antennas, electromagnetic coupling feed technology, shorting pins and matching network designed by means of genetic algorithm (GA) optimizers are used simultaneously to broaden the bandwidth of this circular patch antenna. This presented microstrip circular patch antenna can reach a bandwidth of 65% for voltage standing-wave ratio (VSWR) less than 2.3, and its least horizontal gain is greater than 0.2 dB which is almost the same as that of a monopole antenna working in this frequency band. Its horizontal pattern is as omni-directional as that of a monopole antenna, which enable it to replace a broadband monopole antenna commendably. The experimental results and simulation results agree with each other well.

Keywords

antenna feeds; antenna radiation patterns; broadband antennas; genetic algorithms; microstrip antennas; monopole antennas; broadband monopole antenna; broadband omnidirectional circular patch antenna; electromagnetic coupling feed technology; genetic algorithm optimizers; matching network; voltage standing-wave ratio; Algorithm design and analysis; Bandwidth; Broadband antennas; Design optimization; Electromagnetic coupling; Feeds; Genetic algorithms; Microstrip antennas; Patch antennas; Pins;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-5705-2

Type

conf

DOI

10.1109/ICMMT.2010.5524950

Filename

5524950