US 12,270,939 B2
Radar device
Takaaki Kishigami, Tokyo (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Sep. 14, 2021, as Appl. No. 17/474,993.
Application 17/474,993 is a continuation of application No. PCT/JP2020/005732, filed on Feb. 14, 2020.
Claims priority of application No. 2019-053760 (JP), filed on Mar. 20, 2019.
Prior Publication US 2022/0050176 A1, Feb. 17, 2022
Int. Cl. G01S 7/41 (2006.01); G01S 7/03 (2006.01); G01S 13/42 (2006.01); G01S 13/02 (2006.01)
CPC G01S 7/415 (2013.01) [G01S 7/03 (2013.01); G01S 13/42 (2013.01); G01S 2013/0245 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A radar apparatus, comprising:
an antenna array which consists of a transmission array antenna and a reception array antenna;
a radar transmission circuit which, in operation, transmits a radar signal by using the transmission array antenna; and
a radar reception circuit which, in operation, receives a reflected wave signal that is the radar signal reflected by a target by using the reception array antenna, wherein
the transmission array antenna consists of a plurality of transmission antennas arranged in a first direction, and lengths of all of a first plurality of spacings between adjacent transmission antennas of the plurality of transmission antennas increase in the first direction, and
the reception array antenna consists of a plurality of reception antennas arranged in the first direction, and lengths of all of a second plurality of spacings between adjacent reception antennas of the plurality of reception antennas decrease in the first direction.