Multi-beam antenna device for radar system of e.g. automobile - has offset antenna supported by common holder with radar modules each having integral prim. radiator

摘要

The antenna device has a number of radar modules (1,2,3,7) each with IC panels of transmission and reception circuits, for transmitting and receiving EM waves, contained in a common housing (7). The housing has an integral prim. radiator (1) lying at the focus of an offset reflector (9) supported by a common holder (10) with the radar modules. Each module pref. has a baseplate (3) carrying microstrip transmission lines and transmission and reception circuits along the microstrip transmission lines. USE/ADVANTAGE - Small easily assembled antenna providing time multiplexed horizontal scanning beam for detecting obstacles.