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Fujitsu Ten has developed a compact frequency modulated continuous wave (FMCW) millimeter-wave radar with a scanning function. To get the desired performance, weight and compactness, we integrated the transmitting and receiving antennas, and minimized the number of parts by means of monolithic microwave integrated circuit (MMIC) and analog IC technology. As a result, we were able to add a high speed scan by means of an actuator. We use a digital signal processor (DSP) and software that can correctly recognize multiple targets. We have successfully evaluated the radar's suitability for adaptive cruise control (ACC) by installing it in a test car. This paper describes the technologies used and the results of the evaluation