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US 6,297,784 B1Granted
Bi-frequency cellular telephone antenna
AssigneeAuden Techno Corp.
InventorDaniel Chang
Life of this patent
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Abstract
A bi-frequency cellular telephone antenna includes a shaft fastened to a cellular telephone, an insulative barrel fastened to the shaft at a top side, a first coil for a first frequency mounted inside the insulative barrel, and a second coil for a second frequency mounted around the periphery of the insulative barrel.
Claims3
A bi-frequency cellular telephone antenna comprising:
- a) a shaft configured to be fastened to a cellular telephone, the shaft having a stepped upper section formed by an upper smaller diameter portion and a lower, larger diameter portion, and an outward flange located below the stepped upper section;
- b) a hollow, tubular insulative barrel fixedly mounted on the lower, larger diameter portion and extending therefrom so as to surround and be spaced from the upper, smaller diameter portion;
- c) a first coil of metal wire for a first frequency mounted on the upper smaller diameter portion and located completely within the hollow insulative barrel;
- and,
- d) a second coil of metal wire for a second frequency mounted on the outward flange and extending around a periphery of the insulative barrel.
2 more elements
Dependencies are inferred from the claim text.