Antenna device
AssigneesDenso Corporation, Toyota Jidosha Kabushiki Kaisha, MIRISE Technologies Corporation
InventorsJungaun Lee, Toshihiko Takahata
Life of this patent
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Abstract
An antenna device includes a polarization conversion unit in which a conversion space is formed to propagate radio wave. A first waveguide extends from the conversion space to one side in a longitudinal direction, and a second waveguide extends from the conversion space to the other side in the longitudinal direction. The first waveguide is extended in a height direction in a cross-section perpendicular to the longitudinal direction, and a second waveguide is extended in a width direction in the cross-section. Plural antenna apertures are connected to the second waveguide.
Claims9
An antenna device comprising:
- a monolithic microwave integrated circuit (MMIC);
- a polarization conversion unit electrically connected to the MMIC, a conversion space is formed in the polarization conversion unit to propagate radio wave;
- a first waveguide section in which a first waveguide is formed to be connected to the conversion space from one side in a first direction and extend from the conversion space to the one side in the first direction so as to propagate the radio wave;
- and
- a second waveguide section in which a second waveguide and a plurality of antenna apertures are formed, wherein
- the second waveguide is connected to the conversion space from another side and extends from the conversion space to the other side so as to propagate the radio wave,
- the plurality of antenna apertures is connected to the second waveguide from one side in a second direction perpendicular to the first direction,
- the plurality of antenna apertures is arranged side by side in the first direction and open to an external space by facing the one side in the second direction,
- the conversion space has one end provided on the one side in the first direction and connected to the first waveguide, and another end provided on the other side and connected to the second waveguide,
- the polarization conversion unit propagates the radio wave between the one end and the other end of the conversion space, and changes an oscillation direction of electric field of the radio wave so that the electric field of the radio wave oscillates in a third direction perpendicular to the first direction and the second direction at the one end of the conversion space and oscillates in the second direction at the other end of the conversion space,
- the first waveguide has a first shape extended in the second direction in a cross-section perpendicular to the first direction, and
- the second waveguide has a second shape extended in the third direction in the cross-section.
Dependencies are inferred from the claim text.