US 12,078,745 B2
Radar device
Takaaki Kishigami, Tokyo (JP); Kenta Iwasa, Tokyo (JP); and Hidekuni Yomo, Kanagawa (JP)
Assigned to PANASONIC AUTOMOTIVE SYSTEMS CO., LTD., Kanagawa (JP)
Appl. No. 17/439,682
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Feb. 14, 2020, PCT No. PCT/JP2020/005749
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/189116, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-053751 (JP), filed on Mar. 20, 2019.
Prior Publication US 2022/0163623 A1, May 26, 2022
Int. Cl. G01S 7/00 (2006.01); G01S 7/03 (2006.01); G01S 13/44 (2006.01); H01Q 21/06 (2006.01); H04B 7/0413 (2017.01)
CPC G01S 7/032 (2013.01) [G01S 13/4463 (2013.01); H01Q 21/065 (2013.01); H04B 7/0413 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A radar apparatus comprising:
a radar transmitter circuit that transmits a radar signal by using a transmission array antenna; and
a radar receiver circuit that receives a reflected wave signal that is the radar signal reflected from a target by using a reception array antenna, wherein
the transmission array antenna includes a plurality of transmission antenna groups,
each of the plurality of transmission antenna groups includes a plurality of transmission antennas arranged at a second spacing that is a first integer multiple of a first spacing in a first direction,
a spacing at which each of the plurality of transmission antenna groups is arranged is a fourth spacing that is a second integer multiple of a third spacing in a second direction perpendicular to the first direction,
the reception array antenna is made up of a plurality of reception antenna groups,
each of the plurality of reception antenna groups includes a plurality of reception antennas arranged at a fifth spacing that is a third integer multiple of the first spacing in the first direction,
a spacing at which each of the plurality of reception antenna groups is arranged is a sixth spacing that is a fourth integer multiple of the third spacing in the second direction,
the first integer is smaller than the second integer, and
the third integer larger than the fourth integer.