Antenna device and radar apparatus

An antenna device comprising a transmitting antenna including a plurality of transmission channels and a receiving antenna including a plurality of reception channels, wherein

• the transmitting antenna includes first, second, third, and fourth transmitting antennas,
• an interval between the first transmitting antenna and the second transmitting antenna is wider than an overall width of the receiving antenna,
• an interval between the third transmitting antenna and the fourth transmitting antenna is narrower than an interval between adjacent channels among the plurality of the reception channels, and
• the first and second transmitting antennas are arranged in a direction of arrangement of the reception channels, and the third and fourth transmitting antennas are arranged in the direction of arrangement of the reception channels.

An antenna device comprising a transmitting antenna including a plurality of transmission channels and a receiving antenna including a plurality of reception channels, wherein

• the transmitting antenna includes first, second, third, and fourth transmitting antennas,
• an interval between the first transmitting antenna and the second transmitting antenna is wider than an overall width of the receiving antenna,
• an interval between the third transmitting antenna and the fourth transmitting antenna is narrower than an interval between adjacent channels among the plurality of the reception channels, and
• the transmitting antenna operates using a pair of the first transmitting antenna and the second transmitting antenna in a first operation mode, and operates using a pair of the third transmitting antenna and the fourth transmitting antenna in a second operation mode.

An antenna device comprising:

• a receiving antenna in which a sub-array including a plurality of element antennas is formed and a plurality of the sub-arrays are arranged along a first direction;
• first and second transmission sub-array antennas and third and fourth transmission sub-array antennas that are arranged along the first direction, the first and second transmission sub-array antennas being arranged on one side of the receiving antenna and the third and fourth transmission sub-array antennas being arranged on another side of the receiving antenna;
• fifth and sixth transmission sub-array antennas and seventh and eighth transmission sub-array antennas that are arranged along the first direction, the fifth and sixth transmission sub-array antennas being arranged on one side of the receiving antenna and the seventh and eighth transmission sub-array antennas being arranged on another side of the receiving antenna;
• ninth and tenth transmission sub-array antennas and eleventh and twelfth transmission sub-array antennas that are arranged along a second direction orthogonal to the first direction, the ninth and tenth transmission sub-array antennas being arranged on one side of the first, second, fifth, and sixth transmission sub-array antennas and the eleventh and twelfth transmission sub-array antennas being arranged on another side of the first, second, fifth, and sixth transmission sub-array antennas;
• and
• thirteenth and fourteenth transmission sub-array antennas and fifteenth and sixteenth transmission sub-array antennas that are arranged along the second direction, the thirteenth and fourteenth transmission sub-array antennas being arranged on one side of the third, fourth, seventh, and eighth transmission sub-array antennas and the fifteenth and sixteenth transmission sub-array antennas being arranged on another side of the third, fourth, seventh, and eighth transmission sub-array antennas, wherein
• the first and fifth transmission sub-array antennas are arranged in the second direction,
• the second and sixth transmission sub-array antennas are arranged in the second direction,
• the third and seventh transmission sub-array antennas are arranged in the second direction,
• the fourth and eighth transmission sub-array antennas are arranged in the second direction,
• in each of the first, second, third, and fourth transmission sub-array antennas, a plurality of element antennas are connected to a single feeding point,
• in each of the fifth, sixth, seventh, and eighth transmission sub-array antennas, a plurality of element antennas are connected to a single feeding point,
• in each of the ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, and sixteenth transmission sub-array antennas, a plurality of element antennas are connected to a single feeding point, and
• an interval between phase centers of the first and second transmission sub-array antennas, an interval between phase centers of the third and fourth transmission sub-array antennas, an interval between phase centers of the fifth and sixth transmission sub-array antennas, and an interval between phase centers of the seventh and eighth transmission sub-array antennas are each narrower than an interval between phase centers of the sub-array located on one side of the receiving antenna and the sub-array located on another side of the receiving antenna.

An antenna device comprising:

• an antenna substrate having a first face, the first face having disposed thereon a plurality of element antennas connected to first, second, third, and fourth transmission channels, first conductor patterns connected to the element antennas, and a plurality of element antennas connected to a plurality of reception channels arranged between the first and second transmission channels;
• a first substrate abutting directly on a second face of the antenna substrate or joined indirectly to the second face via a bonding material, the second face being a back face opposite to the first face;
• and
• one or more second substrates electrically connected with the first substrate via a plurality of conductive connection members between the one or more second substrates and an opposite face of the first substrate to the face abutting directly on or joined indirectly to the antenna substrate, the second substrates having integrated circuits mounted on faces thereof, the faces of the second substrates facing the first substrate, the integrated circuits generating radio frequency signals, the second substrates having second conductor patterns formed thereon, the second conductor patterns each having one end connected to a corresponding one of the integrated circuits, wherein
• a plurality of waveguides are formed in the first substrate, and each of the waveguides has one end and another end, the one end of each waveguide facing or opposed to the second face of the antenna substrate and forming a waveguide microstrip converter between a corresponding one of the first conductor patterns and the waveguide, the other end of each waveguide being opposed to another end of a corresponding one of the second conductor patterns,
• the waveguides include at least a waveguide connected to the first transmission channel, another waveguide connected to the third transmission channel, a waveguide connected to the second transmission channel, and another waveguide connected to the fourth transmission channel,
• the waveguide connected to the first transmission channel and the other waveguide connected to the third transmission channel are located at different positions from each other, or the waveguide connected to the second transmission channel and the other waveguide connected to the fourth transmission channel are located at different positions from each other, and
• the waveguides are present between the first conductor patterns and the integrated circuits to transmit the radio frequency signals.

An antenna device comprising:

• a first transmitting antenna including transmission channels A, B, C, and D;
• a second transmitting antenna including transmission channels E, F, G, and H;
• and
• a receiving antenna including a plurality of reception channels, wherein
• the reception channels are arranged along a first direction,
• a combination of the transmission channels A and B and a combination of the transmission channels E and F are arranged along the first direction, a combination of the transmission channels C and D and a combination of the transmission channels G and H are arranged along the first direction,
• the transmission channels A and B are arranged along a second direction perpendicular to the first direction,
• the transmission channels E and F are arranged along the second direction,
• the transmission channels C and D are arranged along the first direction,
• the transmission channels G and H are arranged along the first direction,
• an interval between a phase center of the first transmission antenna and a phase center of the second transmission antenna is wider than an overall width of the receiving antenna,
• an interval between phase centers of the combination of the transmission channels C and D and an interval between phase centers of the combination of the transmission channels G and H are narrower than an interval between adjacent channels among the reception channels.

An antenna device comprising:

• a first transmitting antenna including first, second, third, and fourth transmission channels;
• a second transmitting antenna including fifth, sixth, seventh, and eighth transmission channels;
• and
• a receiving antenna including a plurality of reception channels, wherein
• the reception channels are arranged along a first direction,
• a combination of the first and third transmission channels, a combination of the second and fourth transmission channels, a combination of the fifth and seventh transmission channels, and a combination of the sixth and eighth transmission channels are arranged along the first direction,
• the first and third transmission channels are arranged along a second direction perpendicular to the first direction,
• the second and fourth transmission channels are arranged along the second direction,
• the fifth and seventh transmission channels are arranged along the second direction,
• the sixth and eighth transmission channels are arranged along the second direction,
• an interval between a phase center of the first transmission antenna and a phase center of the second transmission antenna is wider than an overall width of the receiving antenna, and
• an interval between a phase center of the combination of the first and third transmission channels and a phase center of the combination of the second and fourth transmission channels is narrower than an interval between adjacent channels among the reception channels.

An antenna device comprising:

• a transmitting antenna including transmission channels;
• and a receiving antenna including a plurality of reception channels, wherein
• the transmission antenna includes first, second, third, and fourth transmission antennas,
• an interval between the first transmission antenna and the second transmission antenna is wider than an overall width of the receiving antenna,
• an interval between the third transmission antenna and the fourth transmission antenna is narrower than an interval between adjacent channels among the reception channels,
• the first, third, and fourth transmission antennas are connected to different waveguides from each other, and
• the waveguides are each connected to one chip via a waveguide microstrip converter.