Journal of Xidian University ›› 2020, Vol. 47 ›› Issue (1): 60-65.doi: 10.19665/j.issn1001-2400.2020.01.009

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Scheme for antenna design used in in-band full-duplex communication

LIU Weirong1,XUN Jianhui2(),SHI Lingfeng2   

  1. 1. The department of Computer Science, Jining University, Ji’ning 273155, China
    2. Key Lab. of High-Speed Circuit Design and EMC, Ministry of Education, Xidian University, Xi’an 710071, China
  • Received:2019-09-02 Online:2020-02-20 Published:2020-03-19
  • Contact: Jianhui XUN E-mail:xunjh@iiot.ac.cn

Abstract:

In order to effectively suppress the self-interference of the in-band full-duplex communication system, a solution for designing the transceiver antenna based on the simple ring structure and collinear dipole is proposed. In this design, two printed dipole antennas are placed in the zero radiation direction of each other to achieve low port isolation between the two transceiver antennas. Then a simple ring structure is added to improve the isolation between the two antennas. Experimental results show that the two transceiver antennas designed by this scheme have omnidirectional radiation characteristics and can obtain a high port isolation of better than 45.9 dB in 2.4~2.6 GHz band. The scheme for designing the transceiver antenna proposed in this paper can not only effectively reduce the interference between two transceiver antennas, but also provide omnidirectional signal coverage. It is an effective solution for designing transceiver antennas for the in-band full-duplex communication system.

Key words: dipole antennas, in-band full-duplex, receiving antennas, loop, interference suppression, antenna radiation patterns

CLC Number: 

  • TN92

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