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J Electromagn Eng Sci > Volume 10(4); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(4):303-308.
DOI: https://doi.org/10.5515/JKIEES.2010.10.4.303   
Improving the Isolation of MIMO Antennas Using Split Ring Resonators
Young-Ki Lee, Hae-Il Chung, Jae-Hoon Choi
Dept. of Electronics and Computer Engineering, Hanyang University
Abstract
This paper proposes a method for improving the isolation characteristic of multi-input multi-output (MIMO) antennas using a split ring resonator (SRR) array structure between the two radiating elements. The fabricated antenna satisfies the 10 dB return loss requirement in the Mobile-WiMAX frequency band from 3.4 GHz to 3.6 GHz. The isolation between the two radiating elements is improved by approximately 20 dB at the center frequency by inserting a SRR array structure. The measured peak gains of the two elements are 2.3 dBi and 2.4 dBi, respectively.
Key words: MIMO, Split Ring Resonator, Isolation Characteristic, Metamaterial

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