US 12,146,978 B2
Radar device and transmitting/receiving array antenna
Kenta Iwasa, Tokyo (JP); Takaaki Kishigami, Tokyo (JP); and Hidekuni Yomo, Kanagawa (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Sep. 15, 2021, as Appl. No. 17/476,098.
Application 17/476,098 is a continuation of application No. PCT/JP2020/010659, filed on Mar. 11, 2020.
Claims priority of application No. 2019-053737 (JP), filed on Mar. 20, 2019.
Prior Publication US 2022/0003834 A1, Jan. 6, 2022
Int. Cl. G01S 7/282 (2006.01); G01S 7/285 (2006.01); G01S 13/42 (2006.01); H01Q 21/29 (2006.01)
CPC G01S 7/282 (2013.01) [G01S 7/285 (2013.01); G01S 13/428 (2013.01); H01Q 21/293 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A radar apparatus comprising:
a first radar circuit to which a first array antenna is connected; and
a second radar circuit to which a second array antenna is connected, wherein
the first array antenna and the second array antenna are arranged on a two-dimensional plane formed by a first axis and a second axis,
the second array antenna includes a plurality of second antenna lines,
each of the plurality of second antenna lines includes a plurality of second antennas, wherein adjacent second antennas of the plurality of second antennas are spaced apart at a first interval in the first axis direction and at a second interval in the second axis direction,
the first array antenna includes three or more first antenna lines,
each of the three or more first antenna lines includes a plurality of first antennas,
the plurality of first antennas are individually arranged at a same position in the second axis direction and at different positions in the first axis direction, and
of the three or more first antenna lines, two first antenna lines arranged continuously in the second axis direction include at least one all of the first antennas arranged at different positions in the first axis direction.