Phase-comparison monopulse radar with switched transmit beams for automotive application

We have developed a millimeter-wave automotive radar with /spl plusmn/10-degree azimuthal field of view for an adaptive cruise control. A novel technique has been introduced for realizing the wide field of view. That is a phase-comparison monopulse technique with switched transmit beams. This technique makes it possible to widen the field of view with a simple structure.