Antenna unit having power radiation conductor
First Claim
1. An antenna unit comprising:
- an antenna body having a substrate comprising at least one of a dielectric material and a magnetic material;
at least one power supply conductor arranged in the substrate;
the antenna body having on a surface of said substrate at least one power supply terminal for applying a voltage to said power supply conductor; and
a power radiation conductor provided in proximity to a surface of said substrate of said antenna body, the power radiation conductor being electrically isolated from the power supply conductor;
the substrate comprising a plurality of layers stacked on each other establishing a direction normal to the stacked layers; and
said at least one power supply conductor being spirally arranged inside said substrate so as to have a spiral axis extending perpendicular to the direction normal to the stacked layers.
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Accused Products
Abstract
An antenna unit which has a high gain and a wide bandwidth at a low resonance frequency thereof. The antenna unit comprises an antenna body and a power radiation electrode. The antenna body comprises a rectangular-prism-like substrate comprising a dielectric material, whose major ingredients are e.g., barium oxide, aluminum oxide and silica. A power supply conductor is provided in the substrate and is made of copper or copper alloy and is wound in a spiral in the direction of height of the substrate. A power supply terminal for applying a voltage to the power supply conductor is provided on a surface of the substrate. Further, a power radiation electrode, which comprises, e.g., a nearly rectangular metallic plate made of copper, copper alloy or aluminum, is provided on the surface of the substrate of the antenna body. This power radiation electrode is electrically isolated from the power supply conductor.
15 Citations
31 Claims
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1. An antenna unit comprising:
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an antenna body having a substrate comprising at least one of a dielectric material and a magnetic material; at least one power supply conductor arranged in the substrate; the antenna body having on a surface of said substrate at least one power supply terminal for applying a voltage to said power supply conductor; and a power radiation conductor provided in proximity to a surface of said substrate of said antenna body, the power radiation conductor being electrically isolated from the power supply conductor; the substrate comprising a plurality of layers stacked on each other establishing a direction normal to the stacked layers; and
said at least one power supply conductor being spirally arranged inside said substrate so as to have a spiral axis extending perpendicular to the direction normal to the stacked layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna unit comprising:
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an antenna body having a substrate comprising at least one of a dielectric material and a magnetic material; at least one power supply conductor arranged in the substrate; the antenna body having on a surface of said substrate at least one power supply terminal for applying a voltage to said power supply conductor; and a power radiation conductor provided in proximity to an electronic device on which said antenna body is mounted, the power radiation conductor being electrically isolated from the power supply conductor; the substrate comprising a plurality of layers stacked on each other establishing a direction normal to the stacked layers; and
said at least one power supply conductor being spirally arranged inside said substrate so as to have a spiral axis extending perpendicular to the direction normal to the stacked layers. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification