Patent ID: 6130640
Filing Date: 2000-10-10
Classification: G01S,H01L

Abstract:
A radar module comprising:a substrate;an antenna assembly mounted on said substrate, said antenna assembly comprising a plurality of transmitting and receiving channels including respective planar array antenna elements each composed of a plurality of patches connected to and spaced along a linear distal end portion of a feeder line, said planar array antenna elements being arrayed in a direction substantially perpendicular to the linear distal end portion of the feeder line;a plurality of transmitting and receiving assemblies mounted on said substrate, for selectively transmitting high-frequency signals to said planar array antenna elements and selectively receiving echo signals from said planar array antenna elements;a plurality of circulators mounted on said substrate and associated with the transmitting and receiving channels, respectively, said circulators connecting the respective linear distal end portions of the feeder lines to transmission and reception end portions which are connected to the transmitting and receiving assemblies, respectively;a common signal generator circuit mounted on said substrate for generating a signal to be supplied to the transmission portions connected to the transmitting assemblies; anda signal distributor mounted on said substrate for distributing the signal generated by said common signal generator circuit through binary branch circuits in plural stages to said transmission portions connected to the transmitting assemblies.