Heining, SimonSimonHeiningMichler, FabianFabianMichlerScheiner, BenedictBenedictScheinerHassan, EmadeldeenEmadeldeenHassanKölpin, AlexanderAlexanderKölpinWeigel, RobertRobertWeigelLurz, FabianFabianLurz2020-06-242020-06-242020-01IEEE Radio and Wireless Symposium, RWS: 9050025 (2020)http://hdl.handle.net/11420/6420Continuous wave (CW) radars show an excellent performance in high precision distance measurements. However, when it comes to absolute distances, the ambiguity of these systems is a notable issue. To extend the unambigous range beyond λ/2, dual tone systems have been presented using two spaced CW measurements. In this paper, a broadband multi-tone radar operating in the K-band using six-port technology is presented. By using more than two frequencies, the unambigous range can be further enlarged. The radar system presented in this paper is able to perform 5-FSK measurements within a bandwidth of 5.5GHz delivering an update rate of 25Hz and a precision of 37.96μm.enbroadbandradarsix-portsynthesizerwaveguideConference Paper10.1109/RWS45077.2020.9050025Other