Wireless communication apparatus
First Claim
1. A wireless communication apparatus comprising:
- a circuit board having a high-frequency circuit disposed therein;
a casing accommodating the circuit board; and
an antenna disposed inside the casing or on a surface of the casing, the antenna including;
a feed element having at least one feed radiation plate and a feed terminal plate connecting the feed radiation plate to the high-frequency circuit; and
at least one parasitic element having a parasitic radiation plate located adjacent to and along the feed radiation plate of the feed element and a ground terminal plate connecting the parasitic radiation plate to a ground surface of the circuit board.
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Accused Products
Abstract
A wireless communication apparatus includes a casing made of a dielectric material. An antenna including a feed element and first and second parasitic elements is provided in the casing. The feed element includes first and second feed radiation plates. A parasitic radiation plate of the first parasitic element is located near the first radiation plate, and a parasitic radiation plate of the second parasitic element is located near the second feed radiation plate. The amount of coupling between the feed element and the first and second parasitic elements is adjusted based on the relative permittivity of the casing. The feed element and the first parasitic element perform multi-resonance in the same frequency band as the resonance frequency of the first feed radiation plate. The feed element and the second parasitic element perform multi-resonance in the same frequency band as the resonance frequency of the second feed radiation plate.
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Citations
20 Claims
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1. A wireless communication apparatus comprising:
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a circuit board having a high-frequency circuit disposed therein;
a casing accommodating the circuit board; and
an antenna disposed inside the casing or on a surface of the casing, the antenna including;
a feed element having at least one feed radiation plate and a feed terminal plate connecting the feed radiation plate to the high-frequency circuit; and
at least one parasitic element having a parasitic radiation plate located adjacent to and along the feed radiation plate of the feed element and a ground terminal plate connecting the parasitic radiation plate to a ground surface of the circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification