A Circularly Polarized Patch Antenna Array with Reduced Mutual Coupling Using the Aperture-Loading Decoupling Technique

Authors

  • Xin Cheng School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Bingyi Qian School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Le Chang School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Jinlin Liu School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Xiaoming Chen School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

DOI:

https://doi.org/10.13052/2022.ACES.J.371209

Keywords:

Circular polarization, mutual coupling reduction, decoupling aperture, array antenna

Abstract

An aperture-loaded decoupling strategy for 1 × 8 circularly polarized (CP) patch antenna array is presented in this article. By introducing an additional coupling path, the mutual coupling between adjacent antennas is cancelled. The result shows that more than 20-dB isolation enhancement is obtained by applying this strategy at the center frequency of 3.38 GHz. Mutual coupling between both adjacent and non-adjacent elements are suppressed to less than -25 dB. Moreover, the impedance bandwidth and axial ratio (AR) is also improved with decoupling. Compared with conventional CP antenna decoupling methods, the proposed approach has the characteristics of low profile, compact size, and low impact for the ground plane. It is shown that the AR bandwidth can be enhanced using the proposed decoupling method.

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Author Biographies

Xin Cheng, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Xin Cheng received his Bachelor’s degree in Optical Information Science and Technology from Shaanxi University of Science & Technology, Xi’an, China, in 2016. He is currently pursuing a Ph.D. degree in Electronic Science and Technology with Xi’an Jiaotong University, Xi’an, China. His current research interests include antenna array decoupling techniques and gap waveguide technology.

Bingyi Qian, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Bingyi Qian received his B.S. degree in Electronics and Information Engineering from Xidian University, Xi’an, China, in 2020, where he is currently pursuing an M.S. degree in Electronics Science and Technology from Xi’an Jiaotong University, Xi’an. His current research interests include microstrip antenna design, mutual coupling reduction, and 5G mobile antennas.

Le Chang, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Le Chang received his B.S. degree in Electronics and Information Engineering from Xidian University, Xi’an, China, in 2012, and his Ph.D. degree in Electrical Engineering from Tsinghua University, Beijing, China, in 2017. From 2017 to 2020, he was with the Antenna and RF Group, Huawei Device Ltd., Beijing, where he worked as a Senior Engineer. Since 2021, he has been a Special Appointed Researcher with Xi’an Jiaotong University, Xi’an. His current research interests include 5G mobile antennas, millimeter-wave antennas, and phased arrays.

Jinlin Liu, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Jinlin Liu received his B.Sc. degree in communications engineering from the University of Electronic Science and Technology of China, Chengdu, China, in 2005. He received the Vordiploma degree from the Munich University of Technology, Munich, Germany, in 2011, and the Swedish Licentiate degree and Ph.D. degree from the Chalmers University of Technology, Gothenburg, Sweden, in 2016 and 2019, respectively. From 2005 to 2007, he was with Intel, Chengdu branch, as a Test Engineer. From 2013 to 2014, he was with Eurodesign GmbH, Munich, as a PCB Test Engineer. His current research interests include fundamental electromagnetic theory, millimeter-wave planar antennas in general, gap waveguide technology, and frequency-selective surfaces. He received the Best Student Paper Award First Place at the 2017 International Symposium on Antennas and Propagation. He serves on the Review Board for several journals, including the IEEE Transactions on Antennas and Propagation, the IEEE Transactions on Microwave Theory and Techniques, the IEEE Transactions on Components, Packaging, and Manufacturing, the IEEE Antennas and Wireless Propagation Letters, the IEEE Microwave and Wireless Components Letters, and the Journal of Electromagnetic Waves and Applications.

Xiaoming Chen, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Xiaoming Chen received his B.Sc. degree in electrical engineering from Northwestern Polytechnical University, Xi’an, China, in 2006, and his M.Sc. and Ph.D. degrees in electrical engineering from the Chalmers University of Technology, Gothenburg, Sweden, in 2007 and 2012, respectively. From 2013 to 2014, he was a Post-Doctoral Researcher with the Chalmers University of Technology. From 2014 to 2017, he was with Qamcom Research and Technology AB, Gothenburg, Sweden. Since 2017, he has been a Professor at Xi’an Jiaotong University, Xi’an. His current research interests include multi-in multi-out (MIMO) antennas, over-the-air (OTA) testing, reverberation chambers, and hardware impairments and mitigation. Prof. Chen serves as a Senior Associate Editor (AE) for IEEE Antennas and Wireless Propagation Letters. He received the Outstanding AE Award in 2018, 2019, 2020, 2021, and 2022. He received the URSI (International Union of Radio Science) Young Scientist Award in 2017 and 2018.

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Published

2022-12-31

How to Cite

[1]
X. . Cheng, B. . Qian, L. . Chang, J. . Liu, and X. . Chen, “A Circularly Polarized Patch Antenna Array with Reduced Mutual Coupling Using the Aperture-Loading Decoupling Technique”, ACES Journal, vol. 37, no. 12, pp. 1249–1256, Dec. 2022.

Issue

2022: Vol 37 Iss 12

Section

Antennas, Metasurfaces, and Testing Methodologies for 5G/6G Communication