Design and optimisation of a novel dual-band circularly polarised microstrip antenna

Author

Gaffar, Md ; Zaman, M.A. ; Choudhury, Sajid Muhaimin ; Matin, Md Abdul

Author_Institution

Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh

Volume

5

Issue

14

fYear

2011

Firstpage

1670

Lastpage

1674

Abstract

A novel dual-band circularly polarised patch feed antenna is presented. It is theoretically analysed and simulated. It is optimised with a genetic algorithm (GA) which is capable of producing an antenna design that has a low voltage standing wave ratio (VSWR), low cross-polarisation and large bandwidths but small dimensions. A hybrid finite-element method/method of moment model was used to simulate the proposed antenna in which 1.54% axial ratio bandwidth was obtained. Both the effectiveness of the optimisation methodology and the proposed antenna configuration have been scrutinised by simulation and theoretical analysis.

Keywords

design engineering; finite element analysis; genetic algorithms; method of moments; microstrip antennas; multifrequency antennas; dual-band circularly polarised microstrip antenna design; dual-band circularly polarised microstrip antenna optimisation; dual-band circularly polarised patch feed antenna; genetic algorithm; hybrid finite-element method; low cross-polarisation; method of moment model; optimisation methodology; voltage standing wave ratio;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2010.0050

Filename

6111383