团队介绍:中兴通讯股份有限公司测试技术研究团队,针对非地面网络(NTN)圆极化天线测试中,单音激励源在宽带性能表征精准度与测试效率上的不足,探索提出以5G新空口(NR)解调参考信号作为激励的测试方法。本成果是赵路研究团队借助解调参考信号多端口配置下时域对齐、频域正交的特性,构建适配的参考与激励信号,实现对圆极化天线不同指向幅度、相位信息的精准获取,再通过正交线极化合成天线方向图,解决了传统方案宽带性能评估不准、效率偏低的问题。实际测试显示,该方法稳定性与准确性良好,在宽带、大动态范围接收场景下仍能保持稳定同步,有效提升了NTN圆极化天线测试的精度与效率,为5G NR技术与卫星通信系统的融合提供了实用的测试技术支持。
一种基于5G NR DMRS的圆极化天线方向图的测试方法
赵 路,曹 进,谭宗英,李永国
(中兴通讯股份有限公司,陕西 西安 710000)
摘要:针对天线方向图测试中单音激励源难以准确评估非地面网络(Non-Terrestrial Network, NTN)圆极化天线的宽带性能以及测试效率低的问题,提出一种基于5G新空口(New Radio, NR)解调参考信号(Demodulation Reference Signal, DMRS)的宽带激励源方向图测试方法。利用5G NR业务信道中不同端口间DMRS信号的正交性,设计了最优正交性DMRS的参考信号和激励信号,实现对圆极化天线在不同指向下幅度和相位的高精度测量,并利用正交线极化转换合成天线方向图。试验结果表明,该方法适用于NTN系统圆极化天线的宽带性能评估,并显著提升测试效率。
关键词:5G新空口;非地面网络;圆极化天线;解调参考信号;方向图测试
中图分类号:TN915.65;TN98 文献标志码:A
文章编号:2095-6533(2025)06-0040-09
A measurement method for circularly polarized antenna patterns based on 5G NR DMRS
ZHAO Lu, CAO Jin, TAN Zongying, LI Yongguo
(ZTE Corporation, Xi'an 710000, China)
Abstract: Aiming at the problems that single-tone excitation sources in antenna pattern testing have difficulty in accurately evaluating the broadband performance of circularly polarized antennas in non-terrestrial networks (NTN), as well as its low efficiency, a broadband excitation source pattern measurement method based on the 5G new radio (NR) demodulation reference signals (demodulation reference signal, DMRS) is proposed. By leveraging the orthogonality of DMRS signals across different ports in the 5G NR service channel, optimal orthogonal DMRS reference signals and excitation signals are designed, enabling high-precision measurement of amplitude and phase across various antenna pointing angles. The antenna radiation pattern is then synthesized with the orthogonal linearly polarized components. Experimental results demonstrate that the proposed method is well-suited for evaluating the broadband performance of circularly polarized antennas in NTN systems, while significantly improves the testing efficiency.
Keywords: 5G new radio; non-terrestrial networks; circularly polarized antennas; demodulation reference signal; pattern measurement
基金项目:科学技术部国家重点研发计划课题 (2022YFB3404600)
作者简介:赵路 (1976—),男,陕西西安人,硕士,中兴通讯高级工程师,主要研究方向为无线通信、智算等。E-mail:zhao.lu@zte.com.cn
曹进 (1982—),男,山东泰安人,硕士,中兴通讯工程师,主要研究方向为5G-A、NTN和6G等关键技术。E-mail:cao.jin@zte.com.cn
引文格式:赵路,曹进,谭宗英,等.一种基于5G NR DMRS的圆极化天线方向图的测试方法[J].西安邮电大学学报,2025,30(6):40-48.
ZHAO L,CAO J,TAN Z Y,et al.A measurement method for circularly polarized antenna patterns based on 5G NR DMRS[J].Journal of Xi'an University of Posts and Telecommunications,2025,30(6):40-48.