| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna apparatus integrated with an earphone which reduces the fluctuation of the impedance and gain of an antenna to the utmost and can obtain a satisfactory antenna characteristic when the earphone is used. SOLUTION: A branch part 12 is disposed in an intermediate position of earphone signal lines 19 and 15 for transmitting a sound signal from a connector part 11 to a reception part 13, and does not transmit the respective high frequency signals of a plurality of earphone signal lines but transmits the sound signal. The branch part 12 takes out an antenna reception signal received by an antenna element between the intermediate position and the reception part. A coaxial line 14 transmits the antenna reception signal taken out at the branch part to the connector part 11 by using a core wire 14. COPYRIGHT: (C)2005,JPO&NCIPI
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