US 12,222,437 B2
Radar device
Takaaki Kishigami, Tokyo (JP); and Naoya Yosoku, Kanagawa (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Holdings Corporation, Osaka (JP)
Filed on Sep. 21, 2023, as Appl. No. 18/472,038.
Application 18/472,038 is a continuation of application No. 17/081,248, filed on Oct. 27, 2020, granted, now 11,822,002.
Application 17/081,248 is a continuation of application No. 16/855,710, filed on Apr. 22, 2020, granted, now 10,854,992, issued on Dec. 1, 2020.
Application 16/855,710 is a continuation of application No. 16/596,206, filed on Oct. 8, 2019, granted, now 10,673,149, issued on Jun. 2, 2020.
Application 16/596,206 is a continuation of application No. 16/170,755, filed on Oct. 25, 2018, granted, now 10,615,516, issued on Apr. 7, 2020.
Application 16/170,755 is a continuation of application No. 15/067,172, filed on Mar. 10, 2016, granted, now 10,141,657, issued on Nov. 27, 2018.
Claims priority of application No. 2015-061979 (JP), filed on Mar. 25, 2015.
Prior Publication US 2024/0012096 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/02 (2006.01); G01S 7/282 (2006.01); G01S 7/35 (2006.01); G01S 13/02 (2006.01); G01S 13/42 (2006.01); G01S 13/44 (2006.01); G01S 13/931 (2020.01); H01Q 21/08 (2006.01); H01Q 21/22 (2006.01)
CPC G01S 7/023 (2013.01) [G01S 7/0234 (2021.05); G01S 13/42 (2013.01); G01S 13/4463 (2013.01); H01Q 21/08 (2013.01); G01S 7/282 (2013.01); G01S 7/352 (2013.01); G01S 2013/0245 (2013.01); G01S 13/931 (2013.01); H01Q 21/22 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A radar device comprising:
a transmitting array antenna;
a receiving array antenna;
a radar transmission circuitry which, in operation, transmits radar signals through the transmitting array antenna; and
a radar receiving circuitry which, in operation, receives reflected wave signals through the receiving array antenna, wherein the reflected wave signals are the radar signals reflected by an object,
wherein,
the transmitting array antenna includes a plurality of transmitting antennas,
the receiving array antenna includes a plurality of receiving antennas,
the plurality of transmitting antennas are arranged at different positions in a first direction,
the plurality of receiving antennas are arranged at different positions in the first direction,
a transmitting antenna pitch, which is a pitch between two adjacent transmitting antennas of the transmitting array antenna, is larger than 1 wavelength in the first direction,
a receiving antenna pitch, which is a pitch between two adjacent receiving antennas of the receiving array antenna, is larger than 1 wavelength in the first direction,
an absolute value of a difference between the transmitting antenna pitch and the receiving antenna pitch is not smaller than 0.5 wavelength and not larger than 0.75 wavelength in the first direction, and
at least one antenna of the plurality of transmitting antennas and the plurality of receiving antennas includes a plurality of antenna elements arranged in the first direction.