A compact dual-element UWB-MIMO antenna with single band-notched characteristics

Neha Dalakoti; Priyanka Jain

doi:10.1515/freq-2023-0356

Article

A compact dual-element UWB-MIMO antenna with single band-notched characteristics

Neha Dalakoti and Priyanka Jain

Published/Copyright: March 7, 2024

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From the journal Frequenz Volume 78 Issue 7-8

Abstract

In this paper, a UWB MIMO (multi-input multi-output) antenna working from 3.3 GHz to 10 GHz with a single band notch at 4.5 GHz has been proposed. The antenna comprises of two circular microstrip patches of radius 6.4 mm with tapered microstrip feed line of input impedance 50 Ω connected to them. 1.6 mm thick FR4 substrate (εr = 4.4, tanδ = 0.02) of length and width 38 mm × 38 mm has been used. Partial ground consisting staircase, T-shaped slot, and defected H-shape slot have been utilized to enhance bandwidth and improve isolation. Additionally, C-shaped slot has been created on radiating element to produce a notch at 4.5 GHz. The design achieves a maximum gain of 5.8 dBi at 8.5 GHz and minimum gain of 0.5 dBi at 4.5 GHz. Isolation between the ports is more than 20 dB in the major portion of band of operation. It goes greater than 25 dB in the notch band. Envelope correlation coefficient (ECC) and diversity gain (DG) of 0.0006 and approx. 9.99 dB respectively has been obtained. Channel capacity loss of <−10 dB has been achieved. The proposed antenna is acceptable candidate for UWB MIMO applications.

Keywords: band-notched; compact; tapered fed; UWB; MIMO

Corresponding author: Neha Dalakoti, Electronics and Communication, Delhi Technological University, Bawana Road, Shahbad Daulatpur Village, Rohini, Delhi, 110042, India, E-mail: nehadalakoti_2k21phdec18@dtu.ac.in

Research ethics: This research has been carried out by keeping the originality of the work in the prime center. Authors of this paper are responsible for any conflict.
Author contributions: Mrs. Neha Dalakoti has done the simulation, fabrication and measurements presented in this paper under the guidance of Mrs. Priyanka Jain, Professor, Dept. Of ECE, DTU.
Competing interests: The authors state no conflict of interest.
Research funding: None declared.
Data availability: Not applicable.

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Received: 2023-10-05

Accepted: 2024-02-14

Published Online: 2024-03-07

Published in Print: 2024-08-27

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Articles in the same Issue

https://doi.org/10.1515/freq-2023-0356

Keywords for this article

band-notched; compact; tapered fed; UWB; MIMO