Antenna structure and television receiver

Communications: radio wave antennas – Antennas – With radio cabinet

Reexamination Certificate

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Reexamination Certificate

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07142162

ABSTRACT:
An antenna structure with reduced bulkiness and capable of changing antenna directivity is provided. In order to achieve such an effect, the antenna structure includes a feed element of one of an inverted F type and a loop type, and a passive element of one of the inverted F type and loop type, and having a variable reactor so as to be capable of changing an electrical length, and the feed element and passive element are disposed with a predetermined distance therebetween.

REFERENCES:
patent: 5371509 (1994-12-01), Wallace et al.
patent: 5838283 (1998-11-01), Nakano
patent: 6064347 (2000-05-01), Fordham
patent: 6380898 (2002-04-01), Moore et al.
patent: 6437756 (2002-08-01), Schantz

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