Title: Investigation on defected ground-plane structures to improve isolation and correlation in multi-band MIMO antenna

Authors: M. Swagath Babu; G. Idayachandran; A. Rajesh; T. Shankar; R. Nakkeeran

Addresses: Department of Communication Engineering, School of Electronics Engineering, VIT University, Vellore, India ' Department of Electronics Engineering, School of Engineering and Technology, Pondicherry University, Puducherry, India ' Department of Communication Engineering, School of Electronics Engineering, VIT University, Vellore, India ' Department of Communication Engineering, School of Electronics Engineering, VIT University, Vellore, India ' Department of Electronics Engineering, School of Engineering and Technology, Pondicherry University, Puducherry, India

Abstract: In this paper, a cleft-shaped multi-band multiple input multiple output (MIMO) antenna has been investigated with various defected ground-plane structure (DGS) for wideband operation of global positioning system (GPS) at L2 band (1,200 MHz) and long term evolution advanced (LTE-A) at tri-band (700 MHz, 1,800 MHz and 2,600 MHz) wireless applications. The DGS includes co-directional complementary split ring resonator (C-CSRR) and rhombus structures. Through appropriate placement of these DGS, the reflection coefficient is found to be less than −10 dB and the bandwidth is at least 200 MHz in all the structures. With the proposed structure, the envelope correlation coefficient (ECC) is found to be almost equal to zero for C-CSRR and rhombus shaped DGS at all the bands.

Keywords: defected ground-plane structure; DGS; multiple input multiple output; MIMO antennas; long term evolution advanced; LTE-A; global positioning systems; GPS; isolation; correlation; multi-band antennas.

DOI: 10.1504/IJICS.2016.079186

International Journal of Information and Computer Security, 2016 Vol.8 No.3, pp.258 - 271

Received: 09 Jul 2015
Accepted: 23 Jan 2016
Published online: 21 Sep 2016 *

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