CPC G01S 13/04 (2013.01) [B60W 40/08 (2013.01); B60W 2420/408 (2024.01); B60W 2540/221 (2020.02); B60W 2540/223 (2020.02); B60W 2540/229 (2020.02)] | 11 Claims |
1. An in-cabin radar apparatus, which forms an adaptively received beam distribution in a space in a vehicle, comprising:
a control circuit which recognizes an object in a vehicle by transmitting radar signals through i transmission channels and processing radar signals reflected by the object in the vehicle and received through j receiving channels;
a transmitting antenna part which is installed at one side in a direction parallel to the control circuit and in which i transmitting antennas are disposed in a line in a vertical direction;
a receiving antenna part which is installed at one side in a direction perpendicular to the control circuit and in which j receiving antennas are disposed in a line in a horizontal direction;
i transmission side feed lines, each of which electrically connects the control circuit to one of the i transmitting antennas; and
j receiving side feed lines, each of which electrically connects the control circuit to one of the j receiving antennas,
wherein:
the i transmitting antennas of the transmitting antenna part are disposed in the vertical direction;
each of the i transmitting antennas includes a pair of transmitting antenna patches between which a distance is greater than or equal to 0.6 times and less than 1 times a transmitting and receiving wavelength and which are disposed obliquely;
the j receiving antennas of the receiving antenna part are disposed in the horizontal direction; and
each of the j receiving antennas includes a pair of receiving antenna patches between which a distance is greater than or equal to 0.6 times and less than 1 times the transmitting and receiving wavelength and which are disposed obliquely.
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