Michler, FabianFabianMichlerSchoenhaerl, StefanStefanSchoenhaerlSchellenberger, SvenSvenSchellenbergerShi, KilinKilinShiScheiner, BenedictBenedictScheinerLurz, FabianFabianLurzWeigel, RobertRobertWeigelKölpin, AlexanderAlexanderKölpin2022-02-072022-02-072020-08IEEE MTT-S International Microwave Symposium (2020)http://hdl.handle.net/11420/11662This publication addresses the problem of offsets and offset drifts in continuous-wave radar systems and presents a compensation circuit as hardware solution. In the first part, the sources of static offsets in the baseband voltages are identified and quantified by using an exemplary six-port based radar system. To solve the problem, an offset control circuit is introduced and the benefit, a better use of the analog-to-digital-converter's inputs leading to a reduction of quantization noise, is derived in theory and validated by measurement. The compensation circuit is digitally controlled by a microcontroller and can be used in any six-port or mixer-based radar system.en0149-645x2020980983Automatic gain controlContinuous-wave radarOffset compensationSix-port radarVital parameter sensingConference Paper10.1109/IMS30576.2020.9223859Other