Antenna device and radar device
AssigneeKabushiki Kaisha Toshiba
InventorsTetsu SHIJO, Shuichi Obayashi
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Abstract
According to one embodiment, an antenna device is provided with a dielectric substrate whose both surfaces are covered by first and second metal films, a via-hole row in which via-holes are arranged in two rows on the dielectric substrate, and a waveguide line is formed by the first and the second metal films, and a slot pair provided in the first metal film. The slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line. A center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.
Claims10
An antenna device comprising:
- a dielectric substrate whose one surface is covered by a first metal film and the other surface is covered by a second metal film;
- a via-hole row in which via holes are arranged in two rows at a predetermined interval on the dielectric substrate, the via-hole row with the first metal film and the second metal film forming a waveguide line is by;
- and
- a plurality of slot pairs provided in the first metal film at a predetermined interval from each other,
- wherein each slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line, and
- a center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.
An antenna device comprising:
- a waveguide formed of a conductor and having a hollow portion as a waveguide line;
- and
- a plurality of slot pairs provided on one surface of the waveguide to be spaced from each other at a predetermined interval,
- wherein each slot pair each has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line, and
- a center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.
Dependencies are inferred from the claim text.