Spiral antenna
First Claim
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1. A spiral antenna comprising:
- an antenna element formed into a spiral shape on a dielectric substrate;
a cavity formed to have a space with the antenna element; and
a radio wave absorber placed on an upper surface of the dielectric substrate to cover a terminal end portion of the spiral.
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Abstract
According to one embodiment, a spiral antenna includes an antenna element, a cavity, and a radio wave absorber. The spiral antenna is formed into a spiral shape on a dielectric substrate. The cavity is formed to have a space with the antenna element. The radio wave absorber is placed to cover a terminal end portion of the spiral.
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Citations
4 Claims
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1. A spiral antenna comprising:
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an antenna element formed into a spiral shape on a dielectric substrate; a cavity formed to have a space with the antenna element; and a radio wave absorber placed on an upper surface of the dielectric substrate to cover a terminal end portion of the spiral. - View Dependent Claims (2, 3, 4)
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Specification