Radio wave receiver with an antenna structure
AssigneeCasio Computer Co., Ltd.
InventorKazuaki ABE
Life of this patent
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Abstract
A radio wave receiver comprising an antenna structure placed within a case. The antenna structure has a rod-like core around which a coil is wound. A pair of opposite external magnetic members are each provided in a respective one of a pair of cavities provided so as to extend along the inner periphery of the case from adjacent the respective ends of the rod-like core toward the end points of an inner diameter of the case parallel to the axis of the rod-like core. The pair of external magnetic members is substantially the same permeability as the core. Thus, the antenna core is magnetically coupled to the pair of external magnetic members.
Claims9
A radio wave receiver comprising:
- an antenna structure including a rod-like core of a magnetic material and a coil wound around the core;
- a case encasing the antenna structure therein;
- and
- a pair of external magnetic members each made of a magnetic material of a permeability similar to that of the core, each external magnetic member being received in a respective one of a pair of cavities provided within the case, each cavity being adjacent to a respective end of the core such that the core is magnetically coupled to the respective external magnetic members.
Dependencies are inferred from the claim text.