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International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 196925, 10 pages
http://dx.doi.org/10.1155/2012/196925
Research Article

How FPGAs Can Help Create Self-Recoverable Antenna Arrays

Faculty of Engineering, University of Rijeka, 51000 Rijeka, Croatia

Received 12 March 2012; Revised 20 September 2012; Accepted 27 September 2012

Academic Editor: Krishnasamy Selvan

Copyright © 2012 Miroslav Joler. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An approach to utilize Field Programmable Gate Array (FPGA) technology to control antenna arrays is presented based on the scenario of sensing a failure of any array element, analyzing degradation of the radiation pattern due to that failure, and finding a new set of excitations to the array elements in order to recover the radiation pattern as close to the original state as possible, thus creating a self-recoverable antenna array (SRA). The challenges of the SRA concept and embodiment of the recovery algorithm(s) are discussed. The results of the radiation recovery are presented on a few array cases, followed by a discussion on the advantages and possible limitations of the FPGA-based array control.