Open AccessRobust adaptive beamforming with low sensitivity for mutual coupling based on auxiliary elements
Author(s) -
Zhang Tao,
Zhang Guanglei,
Li Xiaoming
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0135
Subject(s) - sensitivity (control systems) , adaptive beamformer , coupling (piping) , beamforming , computer science , degradation (telecommunications) , algorithm , control theory (sociology) , topology (electrical circuits) , layer (electronics) , electronic engineering , biological system , mathematics , materials science , engineering , telecommunications , mechanical engineering , artificial intelligence , combinatorics , nanotechnology , control (management) , biology
The performance of the conventional adaptive beamformer undergoes degradation in the presence of the mutual coupling between the neighbouring elements. To eliminate the sensitivity for the MC, the dummy elements are fixed around the array. Here, the authors demonstrate the optimal layers of auxiliary elements for uniform rectangular array (URA) in the case of the specific MC model and give the concrete theoretical proof. The corresponding derivation proves that only one layer of auxiliary elements is needed to tackle with the MC effect, and the output SINR and beampattern are improved by means of the proposed method for URA. Finally, the simulation results have shown the effectiveness of authors’ method.