Volume 11 - Volume 11
Multiobjective Optimization Using Modified Binary PSO for Reduction of Sidelobe Level of the Thinned Array Antenna
Abstract
To design an efficient communication system, controlling the energy present in the side lobes of the
far-field pattern is essential with a considered antenna array. This paper discussed one method for
synthesizing a thin antenna array for optimizing three objectives simultaneously. They are several
active elements, peak SLL and FNBW. All these objectives are in contrast in nature. This multiobjective technique furnishes appreciable flexibility for any specified application. A planar array
antenna of 20X10 and 10X10 is synthesized using modified BPSO and in the position updating equation, a modified sigmoid function is used, including spread distance. Numerical results state that
MBPSO performs well, and the array antenna of 20X10 with 54% filled aperture (108 elements) produces maximum PSLL and FNBW of -19.28dB and 28 in the remaining ∅ plane, respectively. The
pattern representation in the far-field at three cutting planes with low PSLL’s of -20dB. Whereas 0X10 planar array antenna with 52% thinning percentage produces the best PSLL of -22.04 dB and -23.44 dB in ∅ = 0 & 90 principal planes, respectively. The FNBW has observed in two planes is around 31. And also achieved a compromised solution of PSLL and FNBW of -19.28 dB and 27, respectively.
Paper Details
PaperID: 2313
Author's Name: A. Gayatri, ; M. Surendra Kumar and A.M. Prasad
Volume: Volume 11
Issues: Volume 11
Keywords: Planar Array, Antenna Array, Thinning, PSO, Sidelobe Level.
Year: 2021
Month: July
Pages: 2715-2725