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Design and Analysis of Four-Port MIMO Antenna with Dual-Band Rejection Characteristics

Author(s):

Routhu Charishma , Vasireddy Venkatadri Institute of Technology; Yadla Gowthami, Vasireddy Venkatadri Institute of Technology; Yeddu Sri Lakshmi, Vasireddy Venkatadri Institute of Technology; Yalavarthi Roopa Sree Sai, Vasireddy Venkatadri Institute of Technology

Keywords:

Envelop correlation coefficient (ECC); Complementary split ring resonator (CSRR); Multiple Input Multiple Output (MIMO); Koch fractal

Abstract

The combination of (ultra-wideband) UWB and multi input-multi-output (MIMO) significantly improves the date rate transmission capacity, spectrum efficiency and overall quality of the communication link in comparison to single antenna systems. The proposed MIMO antenna is comprised of four identical elliptical shaped monopole radiators that are placed orthogonal to each other. A second order Koch fractal geometry is applied at the edges of the ground patch to minimize the overall ize of the ground plane without changing its peripheral dimension and without compromising the lower frequency response. Further, in order to eliminate the undesired resonant bands (3.5 and 5.5 GHz) from UWB, an elliptical complementary split ring resonator (CSRR) is introduced in the monopole radiator. In order to reduce the inert-element coupling in the proposed MIMO antenna, a different approach (of slotted edge substrate) is used as a substitute of traditional decoupling stub/elements. In the entire operating band of 3 to 13.5 GHz, inter-element isolation more than 22 dB and envelope correlation coefficient (ECC) less than 0.008 are obtained. The measured parameters of the fabricated prototype antenna are found to be satisfied with the simulated results.

Other Details

Paper ID: IJSRDV8I10749
Published in: Volume : 8, Issue : 1
Publication Date: 01/04/2020
Page(s): 1088-1091

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