US 12,230,882 B2
Radar apparatus using transmitting array antenna and receiving array
Takaaki Kishigami, Tokyo (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed on Apr. 26, 2023, as Appl. No. 18/307,721.
Application 18/307,721 is a continuation of application No. 17/184,126, filed on Feb. 24, 2021, granted, now 11,670,866.
Application 17/184,126 is a continuation of application No. 16/154,034, filed on Oct. 8, 2018, granted, now 10,965,038, issued on Mar. 30, 2021.
Claims priority of application No. 2017-197194 (JP), filed on Oct. 10, 2017.
Prior Publication US 2024/0291167 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 21/00 (2006.01); G01S 7/03 (2006.01); G01S 7/28 (2006.01); G01S 7/52 (2006.01); G01S 13/02 (2006.01); G01S 13/28 (2006.01); G01S 13/42 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 21/0025 (2013.01) [G01S 7/032 (2013.01); G01S 7/2813 (2013.01); G01S 7/52047 (2013.01); G01S 13/284 (2013.01); G01S 13/42 (2013.01); H01Q 21/061 (2013.01); H01Q 21/065 (2013.01); G01S 2013/0245 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A radar apparatus comprising:
a radar transmitter that transmits a radar signal through a transmitting array antenna; and
a radar receiver that receives, through a receiving array antenna, a reflected-wave signal produced by the radar signal being reflected by a target,
wherein the transmitting array antenna consists of a plurality of first antennas and one or more second antennas,
wherein the plurality of first antennas are arranged at different positions in a first direction,
wherein each of the one or more second antennas is arranged at a different position from each of the plurality of first antennas in the first direction and in a second direction orthogonal to the first direction,
wherein the receiving array antenna consists of a plurality of third antennas and a fourth antenna,
wherein the plurality of third antennas are arranged at different positions in the first direction,
wherein the fourth antenna is arranged at a different position from each of the plurality of third antennas in the first direction and in the second direction,
wherein at least one of inter-element spacings between adjacent antennas of the plurality of first antennas in the first direction is the same as an antenna aperture length in the first direction of the receiving array antenna, and
wherein an inter-element spacing between adjacent antennas of the transmitting array antenna in the second direction is different from an inter-element spacing between adjacent antennas of the receiving array antenna in the second direction.