Antenna and wireless communication card
First Claim
1. An antenna, comprising:
- a planar antenna element that is conductive and includes a feed point; and
a planar ground pattern,wherein said planar ground pattern and said planar antenna element do not cover each other,said planar antenna element and said planar ground pattern both contribute to radiation and are asymmetric with respect to each other,said planar ground pattern has a trimmed portion causing to continuously change a distance between said planar antenna element and said planar ground pattern, andsaid planar antenna element has a shape in which a bottom side thereof has a straight portion or a substantially straight portion adjacent to said planar 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.
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Citations
18 Claims
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1. An antenna, comprising:
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a planar antenna element that is conductive and includes a feed point; and a planar ground pattern, wherein said planar ground pattern and said planar antenna element do not cover each other, said planar antenna element and said planar ground pattern both contribute to radiation and are asymmetric with respect to each other, said planar ground pattern has a trimmed portion causing to continuously change a distance between said planar antenna element and said planar ground pattern, and said planar antenna element has a shape in which a bottom side thereof has a straight portion or a substantially straight portion adjacent to said planar ground pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An antenna, comprising:
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a dielectric substrate on which an antenna element that is conductive is formed; and a board on which said dielectric substrate is mounted, and in or on which a planar ground pattern is formed, wherein said planar ground pattern and said antenna element do not cover each other, said planar antenna element and said planar ground pattern both contribute to radiation and are asymmetric with respect to each other, said planar 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 planar ground pattern side of said antenna element, and said antenna element has a shape in which a bottom side thereof has a straight portion or a substantially straight portion adjacent to said planar ground pattern. - View Dependent Claims (15, 16)
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17. A wireless communication device, comprising:
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a dielectric substrate on which an antenna element that is conductive is formed; a board on which said dielectric substrate is mounted, and in or on which a planar ground pattern is formed, and a RF circuitry mounted on said planar ground pattern, wherein said planar ground pattern and said antenna element do not cover each other, said planar antenna element and said planar ground pattern both contribute to radiation and are asymmetric with respect to each other, said planar ground pattern has a trimmed portion causing to continuously change a distance between said antenna element and said planar ground pattern, and said antenna element has a shape in which a bottom side thereof has a straight portion or a substantially straight portion adjacent to said planar ground pattern. - View Dependent Claims (18)
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Specification