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International Journal of Antennas and Propagation
Volume 2014, Article ID 473063, 5 pages
http://dx.doi.org/10.1155/2014/473063
Research Article

Design of Highly Isolated Compact Antenna Array for MIMO Applications

College of Communication Engineering, Chongqing University, Chongqing 400044, China

Received 4 June 2014; Revised 2 September 2014; Accepted 6 November 2014; Published 20 November 2014

Academic Editor: Dau-Chyrh Chang

Copyright © 2014 Tiancong Huang et al. 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

In order to achieve very high data rates in both the uplink and downlink channels, the multiple antenna systems are used within the mobile terminal as well as the base station of the future generation of mobile networks. When implemented in a size limited platform, the multiple antenna arrays suffer from strong mutual coupling between closely spaced array elements. In this paper, a rigorous procedure for the design of a 4-port compact planar antenna array with high port isolation is presented. The proposed design involves a decoupling network consisting of reactive elements, whose values can be obtained by the method of eigenmode analysis. Numerical results show the effectiveness of the proposed design approach in improving the port isolation of a compact four-element planar array.