Isolation Improvement Using the Field-Circuit Combined Method for In-Band Full-Duplex MIMO Antenna Arrays

Authors

  • Yiran Da School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Jianjia Yi School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China
  • Jianxing Li 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.371203

Keywords:

antenna array, decoupling, field-circuit combined, in-band full-duplex

Abstract

This paper proposes a field-circuit combined decoupling method for co-polarized in-band full-duplex multiple-input multiple-output (MIMO) antenna arrays. The proposed field-circuit combined method is composed of decoupling network and neutralization-based decoupling. An in-band full-duplex antenna with high isolation and low cross-polarization level is designed and extended to a 1 × 4 linear array. The decoupling network and ADS are applied for the array to alleviate the mutual coupling by rebuilding the neutralization wave paths in the circuit and field domains. Thus, low coupling (< −25 dB) among the transmitting/receiving antennas and high isolation (> 47 dB) between the transmitting and receiving antennas are achieved at 2.6 GHz, exhibiting a superior decoupling performance.

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Author Biographies

Yiran Da, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Yiran Da received the B.S. degree in Information Engineering from Xi’an Jiaotong University, Xi’an, China, in 2020, where she is currently pursuing the M.S. degree. Her research interests include base station antenna design and mutual coupling reduction.

Jianjia Yi, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Jianjia Yi (Member, IEEE) received the B.S. degree in Electrical Engineering from the Harbin Institute of Technology, Harbin, China, in 2009, the M.S. degree in Telecommunication Engineering from Politecnico di Torino, Turin, Italy, in 2012, and the Ph.D. degree in Physics from University Paris Saclay, Paris, France, in 2015. From 2016 to 2019, he was an Associate Professor with the State Key Laboratory of Integrated Services Networks, School of Telecommunications Engineering, Xidian University, Xi’an, China. He is currently an Associate Professor with Xi’an Jiaotong University, Xi’an. He has coauthored two book chapters and more than 60 articles in peer-reviewed international journals and conference proceedings. His research interests include theoretical and computational electromagnetics with applications to antenna theory and design, antennas, frequency-selective surfaces, transmitarray, andmetagratings.

Jianxing Li, School of Information and Communications Engineering Xi’an Jiaotong University, Xi’an, 710049, China

Jianxing Li (S’15-M’18) received the B.S. degree in Information and Communications Engineering, and the M.S. and Ph.D. degrees in Electromagnetic Field and Microwave Techniques, all from Xi’an Jiaotong University, Xi’an, China, in 2008, 2011, and 2016, respectively. From 2014 to 2016, he was a visiting researcher with the Department of Electrical and Computer Engineering, Duke University, Durham, NC, USA. He is currently an associate professor at Xi’an Jiaotong University. His research interests include microwave and mmWave circuits and antennas, wireless power transfer, and multi-functional mmWave antennas.

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

Xiaoming Chen (M’16–SM’19) received the B.Sc. degree in electrical engineering from Northwestern Polytechnical University, Xi’an, China, in 2006, and M.Sc. and PhD degrees in electrical engineering from Chalmers University of Technology, Gothenburg, Sweden, in 2007 and 2012, respectively. From 2013 to 2014, he was a postdoctoral researcher at the same University. From 2014 to 2017, he was with Qamcom Research & Technology AB, Gothenburg, Sweden. Since 2017, he has been a professor at Xi’an Jiaotong University, Xi’an, China. His research areas include MIMO antennas, over-the-air testing, reverberation chambers, and hardware impairments and mitigation. Prof. Chen serves as a Senior Associate Editor (AE) for IEEE Antennas and Wireless Propagation Letters and received the Outstanding AE Awards in 2018, 2019, 2020, and 2021. He received the URSI (International Union of Radio Science) Young Scientist Awards in 2017 and 2018.

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Published

2022-12-31

How to Cite

[1]
Y. . Da, J. . Yi, J. . Li, and X. . Chen, “Isolation Improvement Using the Field-Circuit Combined Method for In-Band Full-Duplex MIMO Antenna Arrays”, ACES Journal, vol. 37, no. 12, pp. 1200–1207, Dec. 2022.

Issue

2022: Vol 37 Iss 12

Section

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