Antenna integral with printed circuit board
First Claim
Patent Images
1. An antenna comprising:
- a base comprising at least one printed circuit board having a surface;
at least one radiation conductor disposed spirally on the surface of the base;
at least one power feeding terminal provided on a portion of the surface of said base for applying voltage to the radiation conductor, the radiation conductor having one end coupled to the power feeding terminal and a second end left unconnected; and
said base comprising a plurality of layers laminated on top of each other thereby forming stacked layers, each layer having a layer surface, the stacked layers establishing a direction of the stacked layers normal to the layer surface of each of the stacked layers, the radiation conductor disposed spirally on the surface of the base having a spiral axis extending perpendicular to the direction of the stacked layers.
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Abstract
A compact non-directional chip antenna. The chip antenna includes a rectangular-parallelopiped base made of printed circuit boards (specific inductive capacity: about 2 to 6) having a glass epoxy resin or glass fluororesin as main constituents, a conductor, made of copper or a copper alloy, which is wound in the shape of a spiral inside the base along the direction of the length of the base, and a power feeding terminal, for applying a voltage to the conductor, on the surface of the base. One end of the conductor forms a power feeding section and is connected to the power feeding terminal. The other end of the conductor forms a free end inside the base.
18 Citations
16 Claims
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1. An antenna comprising:
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a base comprising at least one printed circuit board having a surface; at least one radiation conductor disposed spirally on the surface of the base; at least one power feeding terminal provided on a portion of the surface of said base for applying voltage to the radiation conductor, the radiation conductor having one end coupled to the power feeding terminal and a second end left unconnected; and said base comprising a plurality of layers laminated on top of each other thereby forming stacked layers, each layer having a layer surface, the stacked layers establishing a direction of the stacked layers normal to the layer surface of each of the stacked layers, the radiation conductor disposed spirally on the surface of the base having a spiral axis extending perpendicular to the direction of the stacked layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An antenna comprising:
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a base comprising a printed circuit board, the printed circuit board comprising a plurality of layers laminated on top of each other thereby forming stacked layers, each layer having a layer surface, the stacked layers establishing a direction of the stacked layers normal to the layer surface of each of the stacked layers; at least one radiation conductor disposed in or on the base, the radiation conductor comprising a plurality of conductor portions disposed on at least two of the layers and interconnected together when the layers are laminated together to form the radiation conductor, the radiation conductor having a spiral shape extending in three dimensions; at least one power feeding terminal provided on a portion of a surface of said base for applying voltage to the radiation conductor, the radiation conductor having one end coupled to the power feeding terminal and a second end left unconnected; and the radiation conductor having a spiral axis extending perpendicular to the direction of the stacked layers.
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Specification