Antenna and wireless communication card
First Claim
1. An antenna, comprising:
- a planar antenna element having a feed point; and
a ground pattern juxtaposed with said planar antenna element, and wherein said ground pattern has a trimmed portion causing to continuously change a distance between said planar antenna element and said ground pattern.
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Accused Products
Abstract
An antenna of this invention comprises an antenna element to which power is fed at a feed point; and a ground pattern that is juxtaposed with the antenna element and in which a tapered shape is formed with respect to the feed point of the antenna element. By providing the tapered shape for the ground pattern, it is possible to appropriately adjust the coupling degree with the antenna element, thereby it is possible to widen the bandwidth. Moreover, since the ground pattern and the antenna element are juxtaposed with each other, miniaturization can be achieved. When the antenna element is integrally formed in a dielectric substrate, further miniaturization can be achieved. Furthermore, when a cut-out portion is formed in the antenna element, the characteristic of the antenna in the low frequency range is improved.
59 Citations
15 Claims
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1. An antenna, comprising:
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a planar antenna element having a feed point; and
a ground pattern juxtaposed with said planar antenna element, and wherein said ground pattern has a trimmed portion causing to continuously change a distance between said planar antenna element and said ground pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna, comprising:
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a dielectric substrate on which an antenna element is formed; and
a board on which said dielectric substrate is mounted, and in or on which a ground pattern is formed to be juxtaposed with said dielectric substrate, and wherein said ground pattern has a tapered shape with respect to a feed point of said antenna element, and said antenna element has a cut-out portion formed at an edge portion being opposite to the ground pattern side of said antenna element. - View Dependent Claims (14)
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15. A wireless communication device, comprising:
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a dielectric substrate on which an antenna element is formed;
a board on which said dielectric substrate is mounted, and in or on which a ground pattern juxtaposed with said dielectric substrate is formed, and a RF circuitry mounted on said ground pattern, and wherein said ground pattern has a trimmed portion causing to continuously change a distance between said antenna element and said ground pattern.
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Specification