An efficient ULA pattern nulling approach in the presence of unknown interference

In this study, an adaptive pattern nulling approach of half-wave dipole uniform linear arrays (DULA), inspired by binary bat algorithm (BBA)-based beamformers and the phase-only control of array excitation weights, has been proposed. This helps suppress interference with unknown directions in the si...

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Published in:Journal of electromagnetic waves and applications 2021-01, Vol.35 (1), p.1-18
Main Authors: Luyen, Tong Van, Kha, Hoang Manh, Tuyen, Nguyen Viet, Giang, Truong Vu Bang
Format: Article
Language:English
Subjects:
array pattern synthesis
bat algorithm
beamforming
interference suppression
null-steering
Pattern nulling
ULA antennas
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description In this study, an adaptive pattern nulling approach of half-wave dipole uniform linear arrays (DULA), inspired by binary bat algorithm (BBA)-based beamformers and the phase-only control of array excitation weights, has been proposed. This helps suppress interference with unknown directions in the sidelobe region. Several scenarios have been conducted to investigate the performance of the proposal including operation speed and adaptive pattern nulling with or without the effect of mutual coupling. The simulation results show that the proposed approach is a potential solution to precisely place nulls at any direction of unknown interferences while maintaining the main lobe and suppressing the sidelobes. In addition, regarding the pattern nulling, the approach proposed in this study demonstrates greater efficiency and higher speed than those using binary particle swarm optimization (BPSO).
doi_str_mv 10.1080/09205071.2020.1819442
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source Taylor and Francis:Jisc Collections:Taylor and Francis Read and Publish Agreement 2024-2025:Science and Technology Collection (Reading list)
subjects array pattern synthesis
bat algorithm
beamforming
interference suppression
null-steering
Pattern nulling
ULA antennas
title An efficient ULA pattern nulling approach in the presence of unknown interference
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