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International Journal of Antennas and Propagation
Volume 2012, Article ID 526121, 8 pages
http://dx.doi.org/10.1155/2012/526121
Research Article

A Measurement System for the Position and Phase Errors of the Elements in an Antenna Array Subject to Mutual Coupling

Department of Computer Science, Electrical and Space Engineering, LuleƄ University of Technology, 971 87 LuleƄ, Sweden

Received 31 May 2011; Revised 17 October 2011; Accepted 31 October 2011

Academic Editor: Hoi Shun Lui

Copyright © 2012 Tore Lindgren and Johan Borg. 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

When deploying large antenna arrays in arctic environments, a local measurement system may be necessary in order to ensure control over the position and phase of the individual antenna elements. In this paper, a method of estimating the position and phase of each individual antenna element in the presence of mutual coupling is presented. It uses both measurements of the scattering matrix in the array and measurements of the electric field using a minimum of four probes located in the near field of the array. Simulations show that the method gives accurate results even in the presence of noise in the measurements. The geometry of the probe-array system affects the performance significantly.