US Patent 12123943 Radar device

A radar device for a vehicle includes: two or more receiving channels, each of which includes a mixer. At least one or more of the receiving channels includes: a phased array antenna divided into at least two or more branches to provide sub-array antenna elements; and a first phase shifter and a variable gain amplifier as a high frequency unit disposed between each of the sub-array antenna elements and the mixer. A numerical number of the sub-array antenna elements is equal to or more than a numerical number of the high-frequency units.