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The effects of mutual coupling between antenna elements of the performance adaptive arrays
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Date
2003
Author
Özkaya, Güney
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Array processing involves manipulation of signals induced on various antenna elements. In an adaptive array system, the radiation pattern is formed according to the signal environment by using signal processing techniques. Adaptive arrays improve the capacity of mobile communication systems by placing nulls in the direction of interfering sources and by directing independent beams toward various users. Adaptive beamforming algorithms process signals induced on each array element that are assumed not to be affected by mutual coupling between the elements. The aim of this thesis is to investigate the effects of mutual coupling on the performance of various adaptive beamforming algorithms. The performance parameters such as signal to interference plus noise ratio and speed of convergence of the adaptive algorithms are studied and compared by both neglecting and considering the mutual coupling for the least mean squares, recursive least squares, conjugate gradient and constant modulus algorithms. Finally, it is concluded that the effect of mutual coupling is major in the performance of blind algorithms rather than non-blind algorithms. The results are obtained by simulations carried out on MATLAB.
Subject Keywords
Adaptive antennas
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http://etd.lib.metu.edu.tr/upload/2/1093079/index.pdf
https://hdl.handle.net/11511/13642
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Graduate School of Natural and Applied Sciences, Thesis
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G. Özkaya, “The effects of mutual coupling between antenna elements of the performance adaptive arrays,” M.S. - Master of Science, Middle East Technical University, 2003.
