Antenna device
AssigneeDenso Corporation
InventorJungaun Lee
Life of this patent
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Abstract
An antenna device includes a substrate having a base material containing a dielectric and a conductor, a waveguide, an antenna, and a matching portion arranged in the base material as a part of the conductor. The antenna faces the upper wall portion, and has a plurality of patch portions arranged in an array, a plurality of feeding lines extending in a direction from the patch portion and individually provided for the patch portions, and a plurality of short-circuit portions individually provided for the patch portions and electrically connecting the patch portion and the upper wall portion. The upper wall portion has a plurality of openings 34 individually formed with respect to the feeding lines. Each of the feeding lines extends into the waveguide through the corresponding opening.
Claims7
An antenna device, comprising:
- a substrate having a base material containing a dielectric and a conductor arranged in the base material;
- a waveguide that is arranged in the base material as a part of the conductor, and has an upper wall portion, a lower wall portion facing the upper wall portion in a plate thickness of the base material, and a side wall portion connected to the upper wall portion and the lower wall portion;
- an antenna that is arranged in the base material as a part of the conductor, and has a plurality of patch portions arranged in an array so as to face the upper wall portion in the plate thickness direction, a plurality of feeding lines extending in the plate thickness direction from the patch portions and individually provided for the patch portions, and a plurality of short-circuit portions individually provided for the patch portions and electrically connecting the patch portions and the upper wall portion;
- and a matching portion that is arranged in the base material as a part of the conductor and is individually provided with respect to the patch portions in order to match an impedance of the waveguide and an impedance of the antenna;
- wherein the upper wall portion has a plurality of openings individually formed with respect to the feeding lines, and each of the feeding lines extends to an inside of the waveguide through a corresponding opening.
Dependencies are inferred from the claim text.