| 摘要 |
PROBLEM TO BE SOLVED: To provide a tuned type antenna which has a high gain and is microcompact in size. SOLUTION: A conductive film 14 is formed on a magnetic material 15 with about 8 of permeability, and its open end is connected to a variable capacity diode 17 which is parallel to a bias source through a serial circuit of a resistance. A capacity of the variable capacity diode 17 changes according to a bias voltage and changes a tuning frequency as an antenna. The antenna can be obtained which has a size capable of being mounted on an shielding case of a television tuner and tunes to UHF band of a television broadcasting. COPYRIGHT: (C)2004,JPO
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