volume | PIER Journals

Abstract

In this study, a quad-port ultra-wideband (UWB) multiple input multiple output (MIMO) antenna with triple band-rejection characteristics is demonstrated. The suggested diversity MIMO antenna comprises four similar rectangular radiators positioned in orthogonal manner by utilizing polarization diversity. For superior interelement isolation, a fan-shaped decoupler is lithographed on the back of the substrate. The MIMO antenna exhibits an operational bandwidth of 9 GHz (3-12 GHz) for each port, with |S₁₁| ≤ -10 dB. This version is more concise and properly formatted. The MIMO aerial exhibits an impedance bandwidth 3-12 GHz) for each port (|S₁₁| ≤ -10 dB) along with an interelement isolation exceeding 20 dB. Additionally, to exclude the 3.5-4.1 GHz (downlink C-band), 4.43-4.79 GHz (INSAT), and 5.25-5.71 GHz (Wireless LAN) bands that coexist in UWB spectrum, the antenna elements are equipped with three U-shaped slots. The MIMO diversity metrics, including isolation, envelope correlation coefficient, diversity gain, TARC, CCL, multiplexing efficiency and group delay, were computed and reported. The reported aerial prototype has been constructed, and the measured results have been validated against the simulated findings.

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Dr. Thotakura Sushma

Dr. Rajesh Gogineni

Dr. Nallagonda Vijaya Ratnam

Dr. Sadineni Ramesh Babu

Dr. Sunitha Mandava

Dr. Paruchuri Venkata Krishna Kanth