Radar device

A radar signal processing circuitry, comprising:

• a radar transmission circuitry, which, in operation, outputs a radar signal to one of two or more first antennas and two or more second antennas;
• and
• a radar reception circuitry, which, in operation, inputs a reflected wave signal from another of the two or more first antennas and the two or more second antennas, wherein the reflected wave signal includes the radar signal reflected by an object,
• wherein,
• two adjacent first antennas among the two or more first antennas are arranged at a first antenna pitch in a direction,
• two adjacent second antennas among the two or more second antennas are arranged at a second antenna pitch in the direction,
• the first antenna pitch is 1 wavelength or more,
• the second antenna pitch is 1 wavelength or more, and
• an absolute value of a difference between the first antenna pitch and the second antenna pitch in the direction is not smaller than 0.5 wavelength and not larger than 0.75 wavelength.

A radar apparatus, comprising:

• a radar transmission circuitry, which, in operation, outputs a radar signal to one of two or more first antennas and two or more second antennas;
• and
• a radar reception circuitry, which, in operation, inputs a reflected wave signal from another of the two or more first antennas and the two or more second antennas, wherein the reflected wave signal includes the radar signal reflected by an object,
• wherein,
• two adjacent first antennas among the two or more first antennas are arranged at a first antenna pitch in a direction,
• two adjacent second antennas among the two or more second antennas are arranged at a second antenna pitch in the direction,
• the first antenna pitch is 1 wavelength or more,
• the second antenna pitch is 1 wavelength or more, and
• an absolute value of a difference between the first antenna pitch of the first antenna and the second antenna pitch of the second antenna in the direction is not smaller than 0.5 wavelength and not larger than 0.75 wavelength.