A Single-Antenna Full-Duplex Subsystem With High Isolation and High Gain

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Li Zhang;Miao Lv;Zhi-Ya Zhang;Yu Wang;Fanchao Zeng;Can Ding;Chenhui Dai
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引用次数: 0

Abstract

In this paper, a single-antenna full-duplex subsystem is proposed, consisting of a high isolation network and a stacked patch antenna with reflector. The employed patch antenna is fed by two ports with very similar input impedances to make the reflected signals identical. The high isolation network composed of two hybrids and two circulators plays a crucial part in achieving high transmitting to receiving (Tx-Rx) isolation. It is able to cancel out the inevitable reflected signals from the antenna ports and the leakage signals from the circulators. The theoretical analysis is presented and the subsystem is also fabricated and measured. According to the measurement results, across the operation band from 2.018 to 2.12 GHz, the subsystem has VSWR <1.55,> 50 dB, axial ratio <2.4,>10.2 dBic. Compared with the state-of-art single-antenna full-duplex subsystems, the proposed design features high Tx-Rx isolation level and high gain, which is suitable for microwave radio relay communication and satellite detection application.
具有高隔离度和高增益的单天线全双工子系统
本文提出了一种单天线全双工子系统,由一个高隔离度网络和一个带反射器的叠层贴片天线组成。采用的贴片天线由两个输入阻抗非常接近的端口馈电,以使反射信号相同。由两个混合器和两个环行器组成的高隔离度网络在实现高发射到接收(Tx-Rx)隔离度方面起着至关重要的作用。它能够抵消天线端口不可避免的反射信号和环行器的泄漏信号。本文介绍了理论分析,并制作和测量了该子系统。测量结果表明,在 2.018 至 2.12 GHz 的工作频段内,子系统的驻波比为 50 dB,轴向比为 10.2 dBic。与最先进的单天线全双工子系统相比,所提出的设计具有高 Tx-Rx 隔离度和高增益的特点,适用于微波无线电中继通信和卫星探测应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
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