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International Journal of Antennas and Propagation
Volume 2012, Article ID 864306, 7 pages
http://dx.doi.org/10.1155/2012/864306
Research Article

Design of a MIMO Antenna with Improved Isolation Using MNG Metamaterial

Department of Electronics and Communications Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea

Received 2 April 2012; Accepted 23 May 2012

Academic Editor: Ananda S. Mohan

Copyright © 2012 Youngki Lee 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

A multi-input multi-output (MIMO) antenna with improved isolation using an interdigital split ring resonator (SRR) is proposed. The necessary impedance bandwidth is obtained by utilizing the coupling between the meander strip and an inverted L strip. Using interdigital SRR, a negative permeability was generated, while achieving improved isolation between the two radiating elements. The fabricated antenna satisfies the 10 dB return loss in the long-term evolution (LTE) band 40 from 2.3 GHz to 2.4 GHz. The measured peak gains of the two elements were 2.0 dBi and 1.3 dBi. The measured envelope correlation coefficient was less than 0.16 over the frequency band of interest.