Receiving antenna coil
AssigneeSumida Corporation
InventorTsuyoshi Sato
Life of this patent
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Abstract
The present invention provides a receiving antenna coil capable of realizing both improvement in the reception characteristic and miniaturization. In a receiving antenna coil, at least one of an X-axis winding core part and a Y-axis winding core part is formed in a plurality of bars. While increasing occupancy of the winding core parts (the X-axis winding core part and the Y-axis winding core part) in a region in the XY plane surrounded by a Z-axis receiving coil, the length of the winding core parts can be assured long. Further, since the X-axis winding core part and the Y-axis winding core part are provided in the same plane, the height of the core is suppressed, and the dimension of the entire receiving antenna coil can be suppressed.
Claims19
A receiving antenna coil, comprising:
- a core including an X-axis winding core part extending in an X-axis direction and a Y-axis winding core part extending in a Y-axis direction crossing said X-axis direction;
- an X-axis receiving coil wound around said X-axis winding core part and a Y-axis receiving coil wound around said Y-axis winding core part;
- and
- a Z-axis receiving coil wound in a Z-axis direction crossing both said X-axis direction and said Y-axis direction so as to surround said X-axis winding core part and said Y-axis winding core part,
- wherein said X-axis winding core part and said Y-axis winding core part each comprises a magnetic material and are provided in a same plane, and said X-axis winding core part comprises one or more bars provided in a plurality of places in said Y-axis direction, and said Y-axis winding core part comprises one or more bars provided in a plurality of places in said X-axis direction, and
- wherein said X-axis winding core part and said Y-axis winding core part form a closed rectangular loop shape or an H-letter shape in an XY plane.
A receiving antenna coil, comprising:
- a core including an X-axis winding core part comprising a magnetic material extending in an X-axis direction and a Y-axis winding core part comprising a magnetic material extending in a Y-axis direction crossing said X-axis direction;
- an X-axis receiving coil wound around said X-axis winding core part and a Y-axis receiving coil wound around said Y-axis winding core part;
- and
- a Z-axis receiving coil wound in a Z-axis direction crossing both said X-axis direction and said Y-axis direction so as to surround said X-axis winding core part and said Y-axis winding core part,
- wherein said X-axis winding core part and said Y-axis winding core part are respectively formed in a plurality of bars,
- wherein said core is constructed by combining an X-axis core including said X-axis winding core part and a Y-axis core including said Y-axis winding core part, and
- wherein said X-axis core and said Y-axis core are provided in a same plane and form an open rectangular loop shape, and
- wherein at least one of said X-axis core and said Y-axis core comprises an engagement part for making said X-axis core and said Y-axis core fit each other.
A receiving antenna coil, comprising:
- a core being configured in a square shape, said square shape being orientated in a plane along an X-axis direction and a Y-axis direction, said core comprising:
- a first flange provided in a first corner of the square shape;
- a second flange provided in a second corner of the square shape;
- a third flange provided in a third corner of the square shape;
- a fourth flange provided in a fourth corner of the square shape;
- a first rod provided between the first flange and the second flange;
- a second rod provided between the second flange and the third flange;
- a third rod provided between the third flange and the fourth flange;
- a fourth rod provided between the first flange and the fourth flange;
- a first X-axis receiving coil wound around the first rod;
- a second X-axis receiving coil wound around the third rod, said first X-axis receiving coil and said second X-axis receiving coil being electrically connected;
- a first Y-axis receiving coil wound around the second rod;
- a second Y-axis receiving coil wound around the fourth rod, the first Y-axis receiving coil and the second Y-axis receiving coil being electrically connected;
- and
- a Z-axis receiving coil wound in a Z-axis direction crossing both the X-axis direction and the Y-axis direction so as to surround said X first rod, second rod, third rod, and fourth rod,
- wherein each of said first rod, said second rod, said third rod, and said fourth rod comprise a magnetic material and is provided in the plane along the X-axis direction and the Y-axis direction.
Dependencies are inferred from the claim text.