Braun, Tobias T.Tobias T.BraunSchöpfel, JanJanSchöpfelSchweer, ChristianChristianSchweerPohl, NilsNilsPohl2023-07-112023-07-112022https://publica.fraunhofer.de/handle/publica/44540310.1109/IMS37962.2022.98656012-s2.0-85137996114We present a harmonic radar system based on an RFID tag to improve traffic safety for outside vehicles like pedal cyclists. The tag consists of a high gain amplifier chain focused on low power consumption and a frequency doubler. This allows for detection up to a distance of 80 m, with the received signal being close to clutter-free. The transceiver chip with its receive channel at the harmonic frequency is also presented. It expands a conventional radar system at the fundamental frequency. In conjunction with a two-channel backend, the two receivers at different frequencies can be measured simultaneously. Thereby the harmonic receive channel can be directly compared with its fundamental equivalent.enamplifiersautomotive applicationsD-bandFMCWharmonicradarSiGetagW-bandconference paper