移动通信天线远场三维测试系统集成技术

针对现有及未来5G移动通信天线空间辐射特性测试需求和特点,设计了一套分布式天线远场三维测试系统,集成于高性能微波暗室内。发射天线采用多工位设计,高效率地实现了远程无人值守测试。基于U型测试转台实现了待测天线的三维方向图一键测试,具备双测试通路多频点多端口测试功能,有效提高了天线测试效率。系统软件具有较强后处理能力,将测试理论知识有效地应用于工程实践,如软件时域门和远场修正技术等,可获取更为精确的测试结果。以运营商提供的定向基站天线作为系统性能验证鉴定天线,通过与其在其它优良测试远场获取的测试数据进行对比。结果表明,本系统能够较好地满足运营商对目前移动通信天线测试场地及设备的测试要求,具备一键测试、多功能、宽频带、高精度、高效率等特点,易于拓展具备5G移动通信天线空间辐射特性的测试功能。

Far-field 3D Measurement System for Mobile Communication Antenna

A distributed antenna far-field three-dimensional measurement system is designed to meet the requirements and characteristics of the existing and future 5G mobile communication antenna space radiation characteristics test. The system is integrated into a high- performance microwave anechoic chamber. The transmitting antenna is designed with multiple antennas, which effectively realizes remote unattended testing. Based on the U-type test turntable, the three-dimensional pattern one key test of the antenna to be measured is realized, which has the function of dual-channel, multi-frequency and multi-port test, and effectively improves the efficiency of antenna test. The system software has strong post- processing ability. Applying test theory knowledge to engineering practice, such as software time-domain gate and far-field correction technology, more accurate test results can be obtained. The directional base station antenna provided by the operator is used as the system performance verification and identification antenna, and compared with the test data obtained from other excellent test far field. The results show that the system can meet the requirements of mobile communication antenna test site and equipment for operators. It has the characteristics of a key test, multi- function, broadband, high precision and high efficiency. The space radiation characteristic test function of 5G mobile communication antenna is easy to expand.