Synthesis of concentric circular antenna arrays using dragonfly algorithm


BABAYİĞİT B.

INTERNATIONAL JOURNAL OF ELECTRONICS, cilt.105, ss.784-793, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 105 Konu: 5
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1080/00207217.2017.1407964
  • Dergi Adı: INTERNATIONAL JOURNAL OF ELECTRONICS
  • Sayfa Sayıları: ss.784-793

Özet

Due to the strong non-linear relationship between the array factor and the array elements, concentric circular antenna array (CCAA) synthesis problem is challenging. Nature-inspired optimisation techniques have been playing an important role in solving array synthesis problems. Dragonfly algorithm (DA) is a novel nature-inspired optimisation technique which is based on the static and dynamic swarming behaviours of dragonflies in nature. This paper presents the design of CCAAs to get low sidelobes using DA. The effectiveness of the proposed DA is investigated in two different (with and without centre element) cases of two three-ring (having 4-, 6-, 8-element or 8-, 10-, 12-element) CCAA design. The radiation pattern of each design cases is obtained by finding optimal excitation weights of the array elements using DA. Simulation results show that the proposed algorithm outperforms the other state-of-the-art techniques (symbiotic organisms search, biogeography-based optimisation, sequential quadratic programming, opposition-based gravitational search algorithm, cat swarm optimisation, firefly algorithm, evolutionary programming) for all design cases. DA can be a promising technique for electromagnetic problems.