Volume 16, Issue 2 (June 2020)                   IJEEE 2020, 16(2): 146-152 | Back to browse issues page

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Jamunaa D, Mahanti G K, Hasoon F N. Digitally Excited Reconfigurable Linear Antenna Array Using Swarm Optimization Algorithms. IJEEE 2020; 16 (2) :146-152
URL: http://ijeee.iust.ac.ir/article-1-1430-en.html
Abstract:   (3171 Views)
This paper describes the synthesis of digitally excited pencil/flat top dual beams simultaneously in a linear antenna array constructed of isotropic elements. The objective is to generate a pencil/flat top beam pair using the excitations generated by the evolutionary algorithms. Both the beams share common variable discrete amplitude excitations and differ in variable discrete phase excitations. This synthesis is treated as a multi-objective optimization problem and is handled by Quantum Particle Swarm Optimization algorithm duly controlling the fitness functions. These functions include many of the radiation pattern parameters like side lobe level, half power beam width and beam width at the side lobe level in both the beams along with the ripple in the flat top band of flat top beam. In addition to it, the dynamic range ratio of the amplitudes excitations is set below a certain level to diminish the mutual coupling effects in the array. Two sets of experiments are conducted and the effectiveness of this algorithm is proved by comparing it with various versions of swarm optimization algorithms.
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  • This paper is different from other papers in the sense that both the discrete amplitudes as well as discrete phases are digitally controlled using attenuators and phase shifters with mutual coupling effects. This reduces the complexity in the feeding networks.
  • Mutually coupling is duly considered by introducing the DRR parameter.
  • Along with the HPBW parameter, which is usually considered in most of the papers, beamwidth at SLL is considered in addition to HPBW.
  • All the above are simultaneously done in a single paper.
  • In addition to the radiation pattern parameters, statistical parameters are also included for comparison purposes.

Type of Study: Research Paper | Subject: Antenna
Received: 2019/01/31 | Revised: 2019/06/20 | Accepted: 2019/06/28

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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.