Patent ID: 11933875
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 4:
5. A radar apparatus, comprising:
transmission circuitry, which, in operation, transmits each of a plurality of transmission signals using each of a plurality of transmit antennas; and
reception circuitry, which, in operation, receives each of a plurality of reflected wave signals using each of a plurality of receive antennas, the plurality of reflected wave signals being the plurality of transmission signals reflected by an object, wherein
the plurality of transmit antennas include at least one first transmit antenna and a plurality of second transmit antennas,
in a first direction, an absolute value of a difference between, a first spacing and a second spacing is a defined value based on a wavelength of the plurality of transmission signals, the first spacing being a spacing between the at least one first transmit antenna and a phase center of the plurality of second transmit antennas which are used for beam synthesis, the second spacing being a spacing between adjacent receive antennas of the plurality of receive antennas,
the plurality of second transmit antennas are arranged at positions where the plurality of second transmit antennas do not overlap in both of the first direction and a second direction orthogonal to the first direction,
in the first direction, the second spacing is wider than an aperture length between the plurality of second transmit antennas which are arranged side by side at a minimum spacing among spacings between the plurality of second transmit antennas in the first direction, and
in the second direction, the adjacent receive antennas of the plurality of receive antennas are arranged at a minimum spacing among spacings between the plurality of second transmit antennas in the second direction.