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ABSTRACT
In this paper, a tri-band multiple-input multiple-output (MIMO) antenna with high isolation characteristic is designed and fabricated for coal mine applications. It is composed of two symmetrical trident planar monopoles which can achieve tri-band characteristics. The isolation between the elements is higher than 20 dB across the whole frequency region by firstly placing the two elements symmetrically, loading a T-shaped branch and etching two rectangular slots on the ground successively. The proposed antenna can operate at three bands, i.e., 1.85∼2.70 GHz, 3.24∼3.99 GHz and 4.65∼5.80 GHz, which simultaneously cover the operating frequency band of WiMAX, WiFi, 4G, and 5G New Radio (NR) for mining. Good agreements can be observed between the simulated and measured results. The designed tri-band MIMO antenna has the advantages of low profile, compact structure and easy to conform with the platform, thus having a broad prospect in coal mine applications.
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No potential conflict of interest was reported by the author(s).
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Yanhong Xu
Yanhong Xu was born in 1989. She graduated from the State Key Laboratory of Antenna and Microwave Technology of Xidian University in 2017 with a Ph.D. in Electronic Science and Technology, and conducted postdoctoral research at the State Key Laboratory of Terahertz and Millimeter Waves of City University of Hong Kong from 2018 to 2020. At present, she is engaged in the interdisciplinary discipline of electronic technology and mining safety, and her main research directions include millimeter wave antenna technology, phased array antenna analysis and synthesis, new system array antenna technology, ultra-wideband antenna technology, etc. As the first author, she has published more than ten high-level academic papers, including 7 SCI Region I papers, 3 SCI Region II papers, presided over the National Natural Science Foundation of China Youth Program and Xi'an University of Science and Technology Outstanding Youth Fund Project, and participated in the National Natural Science Foundation of China General Project, National Defense Key Project and other vertical projects. In addition, she serves as a reviewer for internationally renowned journals such as IEEE TAP, IEEE AWPL, IEEE TAES, IET SP, IET MAP and so on.
Peipei Dong
Peipei Dong received the B.S degree in communication and information engineering from Xi'an University of Science and Technology in 2017. She is currently pursuing the M.S. degree in electronic science and technology with Xi'an University of Science and Technology. Her research interests include antenna design for different applications.
Anyi Wang
Anyi Wang received his Ph.D. in Signal and Information Processing from Xidian University in 2001, and conducted postdoctoral research in Datang Mobile Communication Equipment Co., Ltd. His main research directions are key technologies of broadband digital mobile communication, intelligent information processing technology and intelligent coal mines, etc. He has obtained 12 national invention patents and published more than 80 academic papers related to core journals.