Abstract:
In view of the new requirements of vehicle antenna performance test in new technology scenarios such as automatic driving and vehicle networking, based on the research results of near-field measurement technology in recent years,the design adopts the combination of spherical near-field and plane near-field, and integrates a set of vehicle antenna test system. Based on the 8 m diameter azimuth turntable, the system realizes the test and positioning of the vehicle antenna for small and medium-sized vehicles. Based on the 12 m diameter arc multi probe test stand, it realizes the hemispherical near field test of the vehicle mobile communication antenna in the working frequency band of 400 MHz-6 GHz. Based on the single probe sampling stand with a scanning distance of 2.5 m, it realizes the plane near field test of the vehicle radar antenna in the working frequency band of 6-80 GHz. In the calibration field, the calibration horn antenna is used as the system performance verification antenna, and the near-field test results are compared with those in the calibration field. The test results show that the system has the characteristics of broadband, multi-function, high precision and high efficiency, and it is an excellent experimental platform for measuring vehicle antenna in China.