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A compact triple band-notched quasi-self-complementary UWB MIMO antenna decoupled by SRRs

Published online by Cambridge University Press:  25 November 2022

Jinrong Su Open the ORCID record for Jinrong Su [Opens in a new window] ,
Yanling Li ,
Xinwei Chen Open the ORCID record for Xinwei Chen [Opens in a new window] ,
Guorui Han  and
Wenmei Zhang
Jinrong Su*
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China
Yanling Li
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China
Xinwei Chen
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China
Guorui Han
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China
Wenmei Zhang
Affiliation:
School of Physics and Electronic Engineering, Shanxi University, Shanxi 030006, China
*
Author for correspondence: Jinrong Su, E-mail: sujinrong@sxu.edu.cn
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Abstract

In this paper, a compact four-element quasi-self-complementary (QSC) ultra-wideband (UWB) multiple-input multiple-output antenna with triple band-notched characteristics is proposed. Coplanar waveguides fed QSC structure is designed as radiation element to achieve wideband and small size. Besides, regular hexagonal split-ring resonators with single negative properties are designed and added on the back of the substrate to obtain high isolation in the whole operating band. Moreover, a double-fork-shaped slit is etched in each radiating element to generate three notched bands covering 3.63–4.24, 5.15–5.98, and 7.17–8 GHz. The experiment results indicate that the isolation of the proposed antenna is higher than 22 dB and the peak gain varies from 2.5 to 6.7 dB in the entire band of 3–18 GHz, which demonstrates that it is suitable for UWB applications.

Keywords

High isolationnotched bandsquasi-self-complementary (QSC)split-ring resonator (SRR)UWB-MIMO antenna
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 7 , September 2023 , pp. 1251 - 1261
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Copyright
© The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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