Antenna device for high-frequency radio apparatus and wrist watch-type radio apparatus
First Claim
1. An antenna device for a high frequency radio apparatus comprising:
- a multilayer circuit board having a curved periphery;
an antenna element formed as a pattern on a layer of the multilayer circuit board following along the periphery of the multilayer circuit board, and having a near-arc shape when viewed from above; and
a ground pattern connected with the antenna element and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies; and
wherein a first line and a second line form an angle less than or equal to 180 degrees, the first line passing through the center of a circle formed in part by the near arc shape and a point where the antenna element is connected with the ground pattern, the second line passing through the center of the circle and a tip of the antenna element.
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Accused Products
Abstract
An antenna device for a high frequency radio apparatus is equipped with an antenna element which is placed on a circuit board whose peripheral shape has a curve. The antenna element also follows the peripheral shape of the circuit board to have a curved part when viewed from above. The antenna device also has a ground pattern where the antenna element touches. The ground pattern can be placed at a constant distance from the antenna element toward the board. Furthermore, the ground pattern can be formed on almost the entire area of the circuit board other than where the antenna element is formed. Also, the circuit board may be a multilayer circuit board, and the ground pattern can be formed almost on the entire area of any one layer of the multilayer circuit board other than where the antenna element is formed.
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Citations
21 Claims
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1. An antenna device for a high frequency radio apparatus comprising:
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a multilayer circuit board having a curved periphery;
an antenna element formed as a pattern on a layer of the multilayer circuit board following along the periphery of the multilayer circuit board, and having a near-arc shape when viewed from above; and
a ground pattern connected with the antenna element and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies; and
wherein a first line and a second line form an angle less than or equal to 180 degrees, the first line passing through the center of a circle formed in part by the near arc shape and a point where the antenna element is connected with the ground pattern, the second line passing through the center of the circle and a tip of the antenna element. - View Dependent Claims (2, 3, 4)
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5. An antenna device for a high frequency radio apparatus comprising:
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a multilayer circuit board;
an antenna element formed as a pattern on a layer of the multilayer circuit board; and
a ground pattern that is connected with the antenna element and is formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies. - View Dependent Claims (6)
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7. An antenna device for a high frequency radio apparatus comprising:
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a multilayer circuit board;
an antenna element formed as a pattern on a layer of the multilayer circuit board;
a first ground pattern formed on a layer of the multilayer circuit board a constant distance from the antenna element and connected with the antenna element; and
a second ground pattern electrically connected with the first ground pattern and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies. - View Dependent Claims (8)
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9. A high frequency radio apparatus comprising:
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an antenna part comprising;
a multilayer circuit board having a curved periphery;
an antenna element formed as a pattern on a layer of the multilayer circuit board and having a near-arc shape along the periphery of the multilayer circuit board when viewed from above;
a ground pattern connected with the antenna element and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies; and
wherein a first line and a second line form an angle less than or equal to 180 degrees, the first line passing through the center of a circle formed in part by the near arc shape and a connecting point where the antenna element is connected with the ground pattern, and the second line going through the center of the circle and a tip of the antenna element; and
a radio communication part that performs radio communication through the antenna part. - View Dependent Claims (10, 11, 12, 13)
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14. A high frequency radio apparatus comprising:
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an antenna part comprising;
a multilayer circuit board;
an antenna element formed as a pattern on a layer of the multilayer circuit board; and
a ground pattern connected with the antenna element and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies; and
a radio communication part that performs radio communication through the antenna part. - View Dependent Claims (15, 16, 17)
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18. A high frequency radio apparatus comprising:
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an antenna part comprising;
a multilayer circuit board;
an antenna element formed as a pattern on a layer of the multilayer circuit board; and
a first ground pattern connected with the antenna element and formed on a layer of the multilayer circuit board at a constant distance from the antenna element;
a second ground pattern electrically connected with the first ground pattern and formed in almost the entire area of any one internal layer of the multilayer circuit board other than the corresponding area that the antenna element occupies; and
a radio communication part that performs radio communication through the antenna part. - View Dependent Claims (19, 20, 21)
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Specification