Vol. 12

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2009-10-20

Synthesis of Thinned Planar Circular Array Antennas Using Modified Particle Swarm Optimization

By Narendra Nath Pathak, Gautam Mahanti, Shashank K. Singh, Jitendra Kumar Mishra, and Ajay Chakraborty
Progress In Electromagnetics Research Letters, Vol. 12, 87-97, 2009
doi:10.2528/PIERL09090606

Abstract

In this paper, the authors present an optimization method based on modified Particle Swarm Optimization (PSO) algorithm for thinning large multiple concentric circular ring arrays of uniformly excited isotropic antennas that will generate a pencil beam in the vertical plane with minimum relative side lobe level (SLL). Two different cases have been studied, one with fixed uniform inter-element spacing and another with optimum uniform inter-element spacing. In both the cases, the number of switched off elements is made equal to 220 or more. The half-power beam width of the synthesized pattern is attempted to make equal to that of a fully populated array with uniform spacing of 0.5 λ. Simulation results of the proposed thinned arrays are compared with a fully populated array to illustrate the effectiveness of our proposed method.

Citation


Narendra Nath Pathak, Gautam Mahanti, Shashank K. Singh, Jitendra Kumar Mishra, and Ajay Chakraborty, "Synthesis of Thinned Planar Circular Array Antennas Using Modified Particle Swarm Optimization," Progress In Electromagnetics Research Letters, Vol. 12, 87-97, 2009.
doi:10.2528/PIERL09090606
http://www.jpier.org/PIERL/pier.php?paper=09090606

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