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Compact ACS-fed MIMO antenna with dual-band notch characteristics for UWB applications

Published online by Cambridge University Press:  30 November 2023

Zhongyuan Lu Open the ORCID record for Zhongyuan Lu [Opens in a new window] ,
Han Lin ,
Zhonggen Wang ,
Wenyan Nie  and
Weidong Mu
Zhongyuan Lu
Affiliation:
School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, China
Han Lin*
Affiliation:
School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, China
Zhonggen Wang
Affiliation:
School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, China
Wenyan Nie
Affiliation:
School of Mechanical and Electrical Engineering, Huainan Normal University, Huainan, China
Weidong Mu
Affiliation:
School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, China
*
Corresponding author: Han Lin; Email: [email protected]
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Abstract

An ultra-wideband (UWB) and compact-size four-port multiple input multiple output (MIMO) antenna with a footprint of 34 mm × 34 mm fed by an asymmetric coplanar strip (ACS) is investigated. The proposed antenna is composed of four orthogonally placed identical modified elliptical-shaped radiators and achieves an impedance bandwidth of 3.4–12.2 GHz. By etching two inverted L-shaped slots in the radiator element, WLAN band and X-band are rejected in the operating communication range. Because of the usage of a meander line decoupler, the isolation enhancement at the 8–12 GHz band is achieved and the isolation is more than 18 dB for most of the UWB range. The performance of the proposed antenna is studied in terms of isolation between each port, radiation pattern, current distribution, gain, envelope correlation coefficient, diversity gain, and total active reflection coefficient. The compact size and reduced complexity make the proposed design highly suitable for portable devices.

Keywords

asymmetric coplanar stripdiversity performancedual-band notch characteristicsMIMO antenna
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 3 , April 2024 , pp. 478 - 486
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Copyright
© The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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