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

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4 Author(s)
Md. Gaffar ; Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh ; M. A. Zaman ; S. M. Choudhury ; Md. A. Matin

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.

Published in:

IET Microwaves, Antennas & Propagation  (Volume:5 ,  Issue: 14 )