| 摘要 |
PROBLEM TO BE SOLVED: To provide a power feeding method of a receiving antenna for preventing useless power consumption and realizing a small body of the receiver, by eliminating the mounting of a power feeding circuit for driving a converter for each receiver. SOLUTION: A receiving antenna 1, a plurality of receivers 8 to 10, and a power-feeding distributing means 25 for feeding power to a converter 2 when any of the receivers 8 to 10 is turned on in power and distributing a receiving signal converted in frequency by the converter 2 to the receivers 8 to 10 are provided. In this case, the power-feeding distributing means 25 includes a DC voltage detecting circuit 5 for detecting the power ON when the receivers 8 to 10 are turned on in power, a power supply circuit 6 for feeding operational power, a feeding power control circuit 7 for controlling the feeding power on the basis of the output of the DC voltage detecting circuit 5, a DC breaking circuit 3 for breaking the DC and generating a received signal, and a distributor for distributing the received signal to the receivers 8 to 10. COPYRIGHT: (C)2004,JPO
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