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Performance of a circular crossed‐dipole array for SDMA configuration adopting directivity and polarization control using particle swarm optimization algorithm
Author(s) -
Mahmoud K. R.,
Bansal R.,
ElAdawy M. I.,
ZainudDeen S. H.,
Ibrahem Sabry M. M.
Publication year - 2009
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20314
Subject(s) - directivity , circular buffer , particle swarm optimization , dipole , beamforming , circular polarization , polarization (electrochemistry) , dipole antenna , algorithm , electronic engineering , engineering , physics , optics , topology (electrical circuits) , computer science , electrical engineering , microstrip , antenna (radio) , chemistry , quantum mechanics , programming language
Abstract In this article, the performance of a circular crossed‐dipole array (CCDA) for space division multiple access (SDMA) configurations adopting directivity and polarization control is presented. The array consists of 12 dual‐polarized elements uniformly distributed in a circular configuration; each dual‐polarized element (crossed‐dipole) consists of two half‐wave dipoles in a ±45° slant configuration. The modified particle swarm optimization and moment of method (MPSO‐MOM) algorithm is used to calculate the complex weightings of the array elements in a mutual coupling environment for beamforming synthesis. In addition, the performance of the adaptive array using discrete feedings (1‐bit amplitude and 4‐bit phase shifters or only 4‐bit phase shifters) is studied. © 2008 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2009.