QPSO FOR FAILURE CORRECTION OF LINEAR ARRAY ANTENNA INCLUDING WIDE NULL PLACEMENT

• Main Authors: R. Muralidaran, A. Vallavaraj, Hemant Patidar, G. K. Mahanti
• Format: Article
• Language: English
• Published: ICT Academy of Tamil Nadu 2014-09-01
• Series: ICTACT Journal on Communication Technology
• Subjects: Antenna Array; Failure Correction; Quantum Particle Swarm Optimization; Side Lobe Level; Wide Null Placement
• Online Access: http://ictactjournals.in/paper/IJCT_Paper_2_959_962.pdf

In this paper, the authors have proposed a method based on Quantum Particle Swarm Optimization (QPSO) algorithm in the context of radiation pattern correction of a linear array of isotropic antennas corrupted with one or more faulty antenna elements. Care is taken to maintain the values of side lobe level and maximum Wide Null Placement of the corrected pattern to be identical to the values of non-defective radiation pattern. This correction is made possible by altering the beam weights of the remaining elements in the array. The advantage of this method is that the necessity of replacement of the faulty elements is eliminated. Simulation is done on the linear antenna array constructed of individual isotropic elements separated by identical inter-element spacing and the results obtained from the simulation depict the effectiveness of the proposed method. This method can also be extended to other array geometries.