Title :
Optimization of broadband circularly polarized wide-slot antenna
Author :
An-Na Wang ; Wen-Xun Zhang
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
Abstract :
In this paper, a new circularly-polarized antenna consisting of a circular wide-slot loaded by three radial metal strips is designed. By adjusting the proper position and length of each strip using optimization procedure of constrained multi-objective genetic algorithm combined with simulation software, the axial ratio (AR) bandwidth of the antenna along the normal vector is broadened, and the 13.9% common bandwidth for 1 dB AR and -10 dB return loss (RL) is achieved. Furthermore, the AR deteriorated with angle at different frequencies are displayed and studied.
Keywords :
broadband antennas; genetic algorithms; slot antennas; axial ratio bandwidth; broadband circular polarization wide-slot antenna; constrained multiobjective genetic algorithm; radial metal strips; simulation software; broadband antenna; circularly polarized antenna; multi-objective genetic algorithm; wide-slot antenna;
Conference_Titel :
Microwave Technology and Computational Electromagnetics, 2009. ICMTCE. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-84919-140-1
DOI :
10.1049/cp.2009.1271
