整车空口天线测试技术的发展趋势

Development Trend of Vehicle OTA Antenna Testing Technology

智能网联汽车集成了各种智能感知系统,车载天线通信性能的评估普遍应用空口(OTA)测试技术。文章阐述了OTA测试标准现状、整车OTA测试面临的挑战,介绍了整车天线测试的直接远场法、紧缩场法、近场转换结合远场法各自的特点,分别测试了车载天线无源指标以及手机和整车的有源发射指标。从测试原理、测试方案、工程实践等方面阐述了汽车OTA测试技术的发展趋势。

The intelligent connected vehicle integrates various intelligent perception systems,and over-theair(OTA)testing technology is commonly applied in the evaluation of the communication performance of the vehicle-mounted antennas.The article elaborates on the current status of OTA testing standards,the challenges faced by whole vehicle OTA testing,and introduces the characteristics of direct far-field method,compact range method,and near-field transformation combined with far-field method for whole vehicle OTA testing.The passive performance of vehicle-mounted antenna and the active emission performance of the mobile phone and the whole vehicle are tested separately.The development trend of automotive OTA testing technology is explained from the aspects of testing principles,testing schemes,and engineering practices.