一种用于带内全双工通信的天线设计方案

doi:10.19665/j.issn1001-2400.2020.01.009

摘要/Abstract

摘要：

为了有效地抑制带内全双工通信系统的本地自扰,提出了一种基于简单环形结构和共线偶极子的收发天线设计方案。该方案首先将两个印刷偶极子天线分别放入对方的零辐射方向上,实现了两个收发天线之间较低的端口隔离度;然后在此基础上增加了一个简单的环形结构,进一步将两个天线间的隔离度进行提升。实验测试结果表明,采用该方案设计的两个收发天线具有全向的辐射特性,并且能够在2.4 ~ 2.6 GHz频带内获得优于45.9 dB 的端口隔离度。这种收发天线设计方案不仅能有效地降低两个收发天线之间的互扰,同时还能提供全向的信号辐射,为带内全双工通信系统提供了一个有效的解决方案。

关键词: 偶极子天线, 带内全双工, 接收天线, 环形结构, 自扰抑制, 辐射方向图

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

中图分类号:

TN92

刘伟荣,寻建晖,史凌峰. 一种用于带内全双工通信的天线设计方案[J]. 西安电子科技大学学报, 2020, 47(1): 60-65.

LIU Weirong,XUN Jianhui,SHI Lingfeng. Scheme for antenna design used in in-band full-duplex communication[J]. Journal of Xidian University, 2020, 47(1): 60-65.

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参数	值/mm	参数	值/mm	参数	值/mm
W₁	3	S	85	ΔR	2.75
H₁	22	L₂	23	D	37.5
L₁	21	R₁	29