| 摘要 |
PROBLEM TO BE SOLVED: To provide an earphone antenna capable of allowing a part or the whole of a cord to function satisfactorily as an antenna line for receiving radio waves of a television, a radio or the like, suppressing the attenuation of a high frequency signal of the received radio waves and efficiently receiving even weak radio waves. SOLUTION: In the earphone microphone having a relay part 5 on which a microphone circuit is loaded in the middle of the cord 10 for connecting a connector part 6 with a speaker part 7 and connected to equipment having an acoustic signal input/output function via the connector part 6, the cord 10 between the relay part 5 and the speaker part 7 is considered as the antenna ATN for receiving airwaves, the relay part 5 is equipped with an amplification means A1 for amplifying a high frequency signal received by the antenna ATN and the high frequency signal after amplification is input to the equipment via the connector part 6. COPYRIGHT: (C)2007,JPO&INPIT
|
