| 摘要 |
PROBLEM TO BE SOLVED: To easily and efficiently receive a radio wave utilizing a commercial power supply line. SOLUTION: An antenna element 204 composed of a metal material having a predetermined length is disposed between two lead wires 303, 304 in a body 201 of a power supply cord that is connected to a commercial power source and supplies operating power to a receiver, and this antenna element 204 is connected to an antenna terminal 113c of the receiver 113 by an antenna power feeding line composed of a coaxial cable 206, so that a radio wave propagated by the commercial power supply line is acquired by the antenna element 204 and sent to the receiver. Furthermore, an auxiliary antenna configured separately from the antenna element 204 is connected to the commercial power supply line to increase a gain of a radio wave propagated on the commercial power supply line, thereby improving efficiency of reception by the antenna element 204 buried in the body 201 of the power supply cord. COPYRIGHT: (C)2005,JPO&NCIPI
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