Fully-MMIC 76 GHz radar for ACC

The 76 GHz FSK (frequency shift keying) monopulse radar for the ACC (adaptive cruise control) using MMIC (monolithic microwave integrated circuits) has been developed. The radar transmits 2 frequencies in time-duplex, and measures the distance and the relative speed of targets. The monopulse feature detects the azimuth angle of targets without a scanning mechanism. A fully-MMIC 76 GHz module was developed, and the module was incorporated with microstrip-patch planar antennas. The MMIC module and signal processing electronics were combined into compact one-body unit. Basic radar performance and the new feature of the signal processing algorithm to discriminate multiple stationary targets were evaluated with good results.