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Design of Band-Notched MIMO Antenna for UWB Applications

Ahmed Shaker 1 and Ayman Haggag 2
1. Faculty of Engineering, Helwan University, Cairo, Egypt
2. Faculty of Industrial Education, Helwan University, Cairo, Egypt

Abstract—A compact ultra-wideband (UWB) Multiple-Input-Multiple-Output (MIMO) antenna with a notched band is presented. The proposed design consists of four unipolar UWB radiators, and these monopole radiators are placed perpendicular to each other to exploit polarization diversity, where the four-element ultra-wideband (UWB) Multiple-Input-Multiple-Output (MIMO) antenna is presented. The total size of the antenna is 60x60 mm2. The operating frequency of the antenna is 3.1–11 GHz with a return loss of less than 10 dB, except at the notched band of 4.9– 5.9 GHz. This antenna consists of an isosceles trapezoidal plate with a circular notch cut and two transitional steps as well as a partial ground plane. For UWB bandwidth enhancement techniques: use of a partial ground plane, and modify the gap between the radioactive element and ground plane technique, using steps to control the resistance stability and a notch cut technique. The notch cut from the radiator is too used to reduce the size of the plane antenna. The measured -10 dB return loss bandwidth for the designed antenna is about 116.3% (8.7 GHz). The MIMO antenna does not require any additional structure to improve insulation. The proposed antenna supplies an acceptable radiation pattern and relatively flat gain over the entire frequency band.

Index Terms—Multiple Input Multiple Output (MIMO), Ultra-wide Band (UWB), Notched UWB, CST

Cite: Ahmed Shaker and Ayman Haggag, "Design of Band-Notched MIMO Antenna for UWB Applications," Journal of Communications vol. 16, no. 1, 1-7, January 2021. Doi: 10.12720/jcm.16.1.1-7

Copyright © 2021 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.