US 12,123,943 B2
Radar device
Masato Kohtani, Nisshin (JP)
Assigned to DENSO CORPORATION, Kariya (JP); MIRISE Technologies Corporation, Nisshin (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by DENSO CORPORATION, Kariya (JP); MIRISE Technologies Corporation, Nisshin (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Aug. 31, 2021, as Appl. No. 17/463,072.
Claims priority of application No. 2020-166976 (JP), filed on Oct. 1, 2020.
Prior Publication US 2022/0107408 A1, Apr. 7, 2022
Int. Cl. G01S 13/931 (2020.01); G01S 7/03 (2006.01); G01S 13/02 (2006.01)
CPC G01S 13/931 (2013.01) [G01S 7/03 (2013.01); G01S 2013/0245 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A radar device for a vehicle comprising:
two or more receiving channels, each of which includes a mixer, wherein:
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
one or more first phase shifters and a variable gain amplifier as a high frequency unit disposed between each of the sub-array antenna elements and the mixer;
the sub-array antenna elements in the phased array antenna include at least one grouping element in which two or more sub-array antenna elements are grouped and at least one non-grouping element having a single sub-array antenna element which is not grouped;
a total numerical number of the sub-array antenna elements in the at least one grouping element and the at least one non-grouping element is greater than a numerical number of the one or more first phase shifters;
the at least one or more of the receiving channels further includes a second phase shifter; and
the sub-array antenna elements, the variable gain amplifier, the one or more first phase shifters, the second phase shifter, and the mixer are arranged in this order.