DocumentCode :
1549874
Title :
A Bandwidth Improved Circular Polarized Slot Antenna Using a Slot Composed of Multiple Circular Sectors
Author :
Yeung, Sai Ho ; Man, Kim Fung ; Chan, Wing Shing
Author_Institution :
City Univ. of Hong Kong, Kowloon, China
Volume :
59
Issue :
8
fYear :
2011
Firstpage :
3065
Lastpage :
3070
Abstract :
A circular polarized (CP) slot antenna is designed with a slot composed of multiple circular sectors (MCS). The design has advantages of having a wide 3 dB axial ratio (AR) bandwidth of 57.4%, achieving a good AR smaller than 2 dB in most areas of the frequency range. The design of the antenna follows a multi-objective optimization procedure that applies computational power rather than human tuning. A comparison of the optimized antenna design with other wideband CP antennas in the literature shows that it has advantages of having a smaller physical size in the cross-sectional area than the antennas with multiple feeding structures and a wider operating bandwidth than all the compared antennas.
Keywords :
optimisation; slot antennas; bandwidth improved circular polarized slot antenna; computational power; multiobjective optimization procedure; multiple circular sectors; multiple feeding structures; optimized antenna design; wideband antennas; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Optimization; Slot antennas; Circuit optimization; circular polarization; slot antennas; wideband;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2158953
Filename :
5871304
Link To Document :
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