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5G终端MIMO OTA测试方法研究现状与展望 被引量:7
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作者 马楠 余菲 +2 位作者 杨晓丽 许晓东 张治 《电信科学》 2021年第2期22-31,共10页
MIMO(multi-input multi-output)OTA(over-the-air)测试是评估天线系统辐射性能的重要方法,也是设备在研发、生产阶段必经的步骤之一。随着5G移动通信系统的到来,毫米波等新特性的引入,为传统MIMO OTA测试方法带来了新的挑战,也使得OTA... MIMO(multi-input multi-output)OTA(over-the-air)测试是评估天线系统辐射性能的重要方法,也是设备在研发、生产阶段必经的步骤之一。随着5G移动通信系统的到来,毫米波等新特性的引入,为传统MIMO OTA测试方法带来了新的挑战,也使得OTA测试成为5G毫米波终端唯一可行的测试解决方案。首先论述了5G OTA测试所面临的挑战,分析了4G移动通信系统OTA测试方法在5G OTA性能测试中的适用性,并探究了如何将低频测试方法扩展到毫米波终端测试。然后总结了3GPP对于MIMO OTA测试的研究现状,详细阐述了简单扇形排列的多探头吸波暗室(simple-sectored multi-probe anechoic chamber,SS-MPAC)的系统模型、测试原理以及性能评价指标等,并验证了SS-MPAC配置中利用更少的探头仍可以获得合理的测试精度。最后对未来的研究趋势进行了展望。 展开更多
关键词 5G 多天线终端 SS-MPAC 空口测试
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High Isolation and Low Correlation Small Size Multi-Antenna for MIMO Mobile Terminals
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作者 Song Zhaohui Ding Zhiyong 《China Communications》 SCIE CSCD 2012年第5期100-107,共8页
A new method of forming a four-port multi-antenna by a two-unit patch antenna array is proposed to design a high isolation low correlation stroll size multi-antenna. Dual polarization is real-ized by the method of fee... A new method of forming a four-port multi-antenna by a two-unit patch antenna array is proposed to design a high isolation low correlation stroll size multi-antenna. Dual polarization is real-ized by the method of feeding in two ports. Defec-ted Ground Structure (DGS) is used to eliminate the coupling between the two antenna units. The test results show that the isolation between two ports reaches around 20dB, and that the antenna correlation coefficients is less than 0. 5, which meets the requirements of future mobile communi-cation systems and provides a solution to multi-antenna of MIMO terminals. 展开更多
关键词 MIMO mobile terminal antenna corre-lation DIVERSITY
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