IMPROVEMENT OF FAR FIELD RADIATION PATTERN OF LINEAR ARRAY ANTENNA
USING GENETIC ALGORITHM

Abstract
In this paper, the beam pattern of Linear Array Antennas with isotropic elements is examined. The design goal is to reduce the sidelobe level with a minimum beamwidth increase for the far field radiation pattern of the array by varying its electrical as well as its physical configuration. In this paper the cases of a uniformly excited and uniformly spaced array, uniformly excited and non-uniformly spaced array, and a non-uniformly excited and uniformly spaced array are examined for both symmetric as well as asymmetric array, and a comparison is done between them. Real Coded Genetic Algorithm (RGA) is used to find the optimal locations as well as the optimal excitations for the problem as per the cases considered.

Authors
Sudipta Das, Somen Bhattacharjee, Durbadal Mandal
National Institute of Technology, Durgapur, India

Keywords
Symmetric Linear Array Antenna, Asymmetric Linear Array Antenna, Sidelobe Reduction, First Null Beamwidth, Real Coded Genetic Algorithm.
Published By :
ICTACT
Published In :
ICTACT Journal on Communication Technology
( Volume: 1 , Issue: 1 )
Date of Publication :
March 2010

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