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A miniaturized UWB-MIMO antenna with quadruple band-notched characteristics

Published online by Cambridge University Press:  03 April 2018

Ling Wu ,
Yingqing Xia ,
Xia Cao  and
Zhengtao Xu
Ling Wu*
Affiliation:
College of Physical Science and Technology, Huazhong Normal University, No. 152 luoyu Road, Wuhan, Hubei 430070, People's Republic of China
Yingqing Xia
Affiliation:
College of Physical Science and Technology, Huazhong Normal University, No. 152 luoyu Road, Wuhan, Hubei 430070, People's Republic of China
Xia Cao
Affiliation:
Wuhan Qingchuan University, Wuhan, Hubei 430070, People's Republic of China
Zhengtao Xu
Affiliation:
College of Physical Science and Technology, Huazhong Normal University, No. 152 luoyu Road, Wuhan, Hubei 430070, People's Republic of China
*
Author for correspondence: Ling Wu, E-mail: [email protected]
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Abstract

A simple multiple-input-multiple-output (MIMO) antenna with quad-band-notched characteristics for ultra-wideband (UWB) system is proposed and tested in the article. Based on two similar radiators, the UWB-MIMO system only occupies 22 mm × 28 mm. By etching an inverted L-like meander slot, two inverted L-shaped slots, and adding a C-shaped stub beside the feeding line, four notched bands are realized (3.25–3.6, 5.05–5.48, 5.6–6, and 7.8–8.4 GHz) to suppress interference from WiMAX, lower WLAN, upper WLAN, and uplink of X-band satellite communication system. With a T-like stub extruding from the ground plane, port isolation is effectively improved. The results show that the antenna covers 3.1–10.6 GHz UWB frequency band except four rejected bands and has high isolation of better than −20 dB over most of the frequency band. Moreover, envelope correlation coefficient and good radiation patterns also prove that the introduced antenna is suitable for UWB applications.

Keywords

Multiple-input-multiple-output (MIMO)quad-notched bandultra-wideband (UWB)
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 8 , October 2018 , pp. 948 - 955
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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