A Wideband High Front-to-Back Ratio Directional Filtering Slot Antenna and its Application in MIMO Terminals

Authors

  • Hailong Yang School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China, Department of Navigation, Guidance and Simulation Xi’an Research Institute of High-Tech, Xi’an 710024, China
  • Haitian Liu School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China https://orcid.org/0009-0004-6614-4194
  • Xuping Li School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China
  • Yapeng Li School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China
  • Shanzhe Wang School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China
  • Jinsheng Zhang Department of Navigation, Guidance and Simulation Xi’an Research Institute of High-Tech, Xi’an 710024, China
  • Chenhao Wang Xi’an Key Laboratory of Intelligence Xi’an Technological University, Xi’an 710021, China
  • Yun Fang School of Automation and Electronic Information Xiang’tan University, Xiang’tan 411105, China

DOI:

https://doi.org/10.13052/2024.ACES.J.391106

Keywords:

Directional antenna, front-to-back (F/B) ratio, slot antenna

Abstract

In this paper, a directional filtering slot antenna with a wideband high front-to-back (F/B) ratio is proposed, which aims to improve the anti-interference capability of the unit antenna in the spatial and frequency domains and reduce the coupling between MIMO units. The fundamental structure of this antenna is a transformed defective ground slot antenna, featuring superior filtering attributes in the frequency domain. To achieve a wideband F/B, boost the directional characteristics, and further augment the anti-interference capabilities of the filtering slot antenna, the leading terminal and slot are, respectively, integrated into the filtering antenna. A 2×2 MIMO antenna ensemble is also designed, utilizing the directional filtering slot antenna as the element. This antenna not only exhibits commendable filtering proficiency across the frequency and spatial domains but also effectively inhibits the surface wave and space wave coupling between MIMO antenna units. The simulated and measured results show that the operating bandwidth of the directional filtering slot antenna is 2.8-11.3 GHz, the F/B of the radiation pattern is larger than 15 dB, and the isolation between the 2×2 MIMO antenna units is greater than 20 dB without any decouplingstructure.

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Author Biographies

Hailong Yang, School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China, Department of Navigation, Guidance and Simulation Xi’an Research Institute of High-Tech, Xi’an 710024, China

Hailong Yang received the B.S. in communicating engineering from Heze University, Heze, China, in 2012. M.S and Ph.D. degrees in communicating engineering from Xi’an University of Technology, Xi’an, China, in 2015 and 2019. His research interests include wave propagation and antenna design.

Haitian Liu, School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China

Haitian Liu was born in Liaoningi Province, China, 1999. He is currently pursuing a Master of Engineering degree in the School of Electronic Engineering, Xi’an University of Posts and Telecommunications. His current research interests include artificial intelligence, and array antennas.

Xuping Li, School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China

Xuping Li was born in Xi’an, Shanxi, China, in 1981. He received the Ph.D. degree in electromagnetic fields and microwave technology from Xidian University, Xi’an, China, in 2015. His research interests are antenna theory and engineering.

Yapeng Li, School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China

Yapeng Li received the Ph.D. degree in electronic science and technology from Xidian University, Xi’an, China, in 2020. His research interests include phased array radar and antenna design.

Shanzhe Wang, School of Electronic Engineering Xi’an University of Posts & Telecommunications, Xi’an 710100, China

Shanzhe Wang received the Ph.D. degree in Electronic Science and Technology from Beijing Jiaotong University, Beijing, China, in 2022. His research interests include fixed-frequency beam-scanning leaky-wave antennas.

Jinsheng Zhang, Department of Navigation, Guidance and Simulation Xi’an Research Institute of High-Tech, Xi’an 710024, China

Jinsheng Zhang received the Ph.D. degree in Control Science and Engineering from the Xi’an Research Institute of High-Tech, Xi’an, China, in 2009. He is currently a professor at the Department of Navigation, Guidance and Simulation.

Chenhao Wang, Xi’an Key Laboratory of Intelligence Xi’an Technological University, Xi’an 710021, China

Chenhao Wang received the Ph.D. degree in electromagnetic field and microwave technology from Xi’an University of Technology, Xi’an, China, in 2022. His current research interests include spoof surface plasmon polaritons.

Yun Fang, School of Automation and Electronic Information Xiang’tan University, Xiang’tan 411105, China

Yun Fang received his Ph.D. degree in Electromagnetic Field and Microwave Technology in 2020. His research interests include numerical computation of electromagnetic field wave propagation.

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Published

2024-11-30

How to Cite

[1]
H. . Yang, “A Wideband High Front-to-Back Ratio Directional Filtering Slot Antenna and its Application in MIMO Terminals”, ACES Journal, vol. 39, no. 11, pp. 980–986, Nov. 2024.

Issue

2024: Vol 39 Iss 11

Section

General Submission

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