Multi-band antenna
AssigneeCanon Kabushiki Kaisha
InventorHajime Shimura
Life of this patent
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Abstract
An antenna which operates in a plurality of frequency bands includes a feeding point, a first conductor which is connected to the feeding point, and at least two second conductors which are branched from the first conductor, have a linear shape, and include open ends as ends on a side opposite to the first conductor. The open ends of the two second conductors face in almost the same direction substantially parallel to a side closest to the feeding point out of the sides of an antenna region. The two second conductors include a part at which the distance between the two conductors at a portion parallel to the side is a first distance, and another part at which the distance is a second distance shorter than the first distance, and are electromagnetically coupled at, at least the other part.
Claims13
A multi-band antenna which operates in a plurality of frequency bands, comprising:
- a feeding point;
- a first conductor which is connected to said feeding point;
- and
- at least two second conductors which are branched from said first conductor, have a linear shape, and include open ends as ends on a side opposite to said first conductor,
- wherein the open ends of said second conductors face in substantially the same direction substantially parallel to a side closest to said feeding point out of sides of a region where the antenna is formed,
- said second conductors include a part at which a distance between said conductors at a portion parallel to the side is a first distance, and another part at which the distance is a second distance shorter than the first distance, and
- said second conductors are electromagnetically coupled at at least the other part,
- the other parts of each of the last two conductors are arranged on different flat surfaces.
Dependencies are inferred from the claim text.