Synthesis of phased array antenna for side lobe level reduction using the differential evolution algorithm

• Published in: International journal of speech technology Vol. 23; no. 2; pp. 337 - 342
• Main Authors: Tej, Ravi, Kavya, K. Ch. Sri, Kotamraju, Sarat K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2020; Springer Nature B.V
• Subjects: Algorithms; Amplitudes; Antenna arrays; Artificial Intelligence; Engineering; Evolutionary algorithms; Evolutionary computation; Level (quantity); Phased arrays; Sidelobe reduction; Sidelobes; Signal,Image and Speech Processing; Social Sciences; Synthesis; Side lobe level; Equal phase; Phased array; Uniform excitation; Unequal spacing
• ISSN: 1381-2416; 1572-8110
• DOI: 10.1007/s10772-020-09701-2

In this paper, we synthesis an array consisting of uniformly excited unequally spaced elements for reducing SLLs. A globally optimal solution for the array elements phase and position is determined by using a differential evolutionary algorithm for a given radiation pattern. Reduced side-lobe levels are observed with position-phase synthesis. The obtained results are compared with the possible two cases i.e., uniform amplitude equal phase (variable position-control) and uniform amplitude unequal phase (variable phase-control). The obtained results justify that the position-phase synthesis technique is not only reduces the side-lobe levels to (− 25.28) dB, but also preserves the advantages of both variable position-controlled synthesis and variable phase-controlled synthesis with a minimum number of array elements.