US 12,228,637 B2
Radar device and method
Xu Zhu, Kawasaki Kanagawa (JP); and Hiroki Mori, Kawasaki Kanagawa (JP)
Assigned to KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 23, 2022, as Appl. No. 17/678,112.
Claims priority of application No. 2021-141121 (JP), filed on Aug. 31, 2021.
Prior Publication US 2023/0069118 A1, Mar. 2, 2023
Int. Cl. G01S 13/89 (2006.01); G01S 7/04 (2006.01); H01Q 21/06 (2006.01); H01Q 21/08 (2006.01)
CPC G01S 13/89 (2013.01) [G01S 7/04 (2013.01); H01Q 21/061 (2013.01); H01Q 21/08 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A radar device comprising:
antenna panels, the antenna panels including a first transmission panel, a first reception panel, and a second reception panel, or including a first transmission panel, a second transmission panel, and a first reception panel;
wherein:
the first transmission panel includes first transmission antennas at intervals of m times a distance d, and a first transmission circuit coupled to the first transmission antennas;
the first reception panel includes first reception antennas at intervals of n times the distance d, and a first reception circuit coupled to the first reception antennas;
the distance d is substantially a half wavelength of an electromagnetic wave transmitted from the first transmission panel;
m is a positive integer of two or more;
n is a positive integer of two or more;
m and n are coprime to each other;
in a case where the antenna panels include the first transmission panel, the first reception panel, and the second reception panel:
the second reception panel includes second reception antennas at intervals of n times the distance d, and a second reception circuit coupled to the second reception antennas;
transmission by the first transmission circuit, reception by the first reception circuit, and reception by the second reception circuit are performed in synchronization;
the first transmission panel is on a first plane;
the first reception panel is on a second plane;
the second reception panel is on a third plane;
a first transmission surface of the first transmission panel and a first reception surface of the first reception panel are between the first plane and the second plane;
the first reception surface of the first reception panel and a second reception surface of the second reception panel are between the second plane and the third plane;
an angle between the first plane and the second plane is larger than 0 degrees and smaller than 180 degrees; and
an angle between the second plane and the third plane is larger than 0 degrees and smaller than 180 degrees; and
in a case where the antenna panels include the first transmission panel, the second transmission panel, and the first reception panel:
the second transmission panel includes second transmission antennas at intervals of m times the distance d, and a second transmission circuit coupled to the second transmission antennas;
transmission by the first transmission circuit, transmission by the second transmission circuit, and reception by the first reception circuit are performed in synchronization;
the first transmission panel is on a fourth plane;
the second transmission panel is on a fifth plane;
the first reception panel is on a sixth plane;
the first transmission surface of the first transmission panel and a second transmission surface of the second transmission panel are between the fourth plane and the fifth plane;
the second transmission surface of the second transmission panel and the first reception surface of the first reception panel are between the fifth plane and the sixth plane;
an angle between the fourth plane and the fifth plane is larger than 0 degrees and smaller than 180 degrees; and
an angle between the fifth plane and the sixth plane is larger than 0 degrees and smaller than 180 degrees.