DocumentCode :
2129400
Title :
IPSO based performance comparison of optimum uniform and non-uniform spacing of circular antenna arrays
Author :
Ram, Gopi ; Mandal, Durbadal ; Kar, Rajib ; Ghoshal, Sakti Prasad
Author_Institution :
Department of Electronics and Communication Engineering, National Institute of Technology Durgapur, India
fYear :
2013
fDate :
Jan. 31 2013-Feb. 1 2013
Firstpage :
139
Lastpage :
143
Abstract :
In this paper a design problem of non-uniform circular antenna arrays for maximum side lobe level reduction is dealt with. Circular antenna array has achieved great popularity in the field of Electromagnetics and Communications. Performance comparison of radiation patterns between two cases of circular antenna array as: (i) optimal non-uniform current amplitude excitation weights with optimal uniform spacing, and (ii) non-uniform current amplitude excitation weights with optimal non-uniform spacing. The optimized radiation pattern of the array is obtained using Improved Particle swarm Optimization (IPSO). Circular array antennas lying on x-y plane are assumed. The array is assumed to have the maximum radiation along positive z- axis. Single and multiple nulls are imposed by optimizing the current amplitude excitation weights and optimizing inter-element spacing through IPSO. Various simulated results are presented and hence performances of the radiation patterns are analyzed.
Keywords :
Antenna arrays; Antenna radiation patterns; Convergence; Genetic algorithms; Optimization; Particle swarm optimization; Circular Array Antennas; First Null Beamwidth; Improved Particle Swarm Optimization; Side Lobe Level;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Knowledge and Smart Technology (KST), 2013 5th International Conference on
Conference_Location :
Chonburi, Thailand
Print_ISBN :
978-1-4673-4850-8
Type :
conf
DOI :
10.1109/KST.2013.6512803
Filename :
6512803
Link To Document :
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