Kazuaki Takano

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.

AN ADAPTIVE CRUISE CONTROL USING WHEEL TORQUE MANAGEMENT TECHNIQUE

In this paper, the authors present a longitudinal control method with an adaptive cruise control system that uses a wheel torque management technique. A speed controller and a headway controller are added to the system, based on the wheel torque management technique. The speed control feature does not require the use of tuning parameters. Test results of the control system are reported.

77GHz MMIC transceiver modules with thick-film multi-layer ceramic substrate for automotive radar applications

A 77GHz MMIC transceiver module has been developed for automotive radar applications by using a low-cost thick-film multi-layer ceramic substrate. The module accommodating all MMIC-based transceiver functions in a single-cavity housing for improved manufacturability can be either assembled with built-in Tx/Rx antennas or mounted on external antenna sheet, depending on required antenna beam width. The module, measuring 25/spl times/25/spl times/3.4mm/sup 3/ with 3.3g in weight, has demonstrated >150m target detection capability when evaluated in a radar system, compatible with our current production-type radar.