Investigation on defected ground-plane structures to improve isolation and correlation in multi-band MIMO antenna
by M. Swagath Babu; G. Idayachandran; A. Rajesh; T. Shankar; R. Nakkeeran
International Journal of Information and Computer Security (IJICS), Vol. 8, No. 3, 2016

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.

Online publication date: Wed, 21-Sep-2016

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