Automated vehicle driving systems are becoming increasingly sophisticated and complex as we move toward fully automated driving. Accurate detection information such as distance, angle, relative speed, and radar cross section (RCS) will become increasingly important to correctly control increasingly sophisticated and complex automated driving systems.

RF signals emitted from the antennas of the onboard radar used in these systems penetrate not only the chassis (radome) in which the radar module is mounted, but also the vehicle emblem and bumper to detect the environment outside the vehicle. Ideally, the transmission characteristics (amplitude and phase) of the RF signal should be uniform, but emblems and bumpers have a multi-layered structure (material, primer, paint, etc.), and their thickness and shape vary from part to part depending on the vehicle exterior design, making it very important to understand their transmission characteristics. Therefore, it is very important to understand their transmission characteristics.

This presentation will cover technical topics related to transmission characteristics (amplitude and phase) of emblems, bumpers, etc., as well as evaluation of characteristics using the R&S QAR50 radar radome tester and a dielectric constant calculation tool that utilizes the measurement data. The Radar Radome Tester enables the acquisition of two-dimensional data, making it possible for anyone to quickly, easily, and intuitively evaluate the properties of materials. The measurement algorithm allows the tester to be used for a wide range of applications, from the evaluation of material (flat plate) characteristics before molding to the evaluation of finished products after molding.