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    • 9. 发明专利
    • Antenna unit
    • 空值
    • JP3879258B2
    • 2007-02-07
    • JP15567198
    • 1998-06-04
    • ミツミ電機株式会社
    • 順一 野呂裕一 阿波
    • H04B1/18H04B7/10
    • Y02D70/00Y02D70/40Y02D70/442
    • PROBLEM TO BE SOLVED: To provide a signal switching circuit capable of simplifying wiring and reducing power consumption. SOLUTION: The voltage of an output terminal is switched to any arbitrary voltage by regulators 17 and 18, any one of regulators 17 and 18 is operated and only one of amplifier circuits 12 and 13 for amplifying received signals supplied by antennas 10 and 11 for polarized wave reception is operated so that a signal to be outputted to the output terminal can be switched while controlling the DC voltage of the output terminal. Then, any dedicated control line is not required for switching and wiring can be simplified. Further, since only one of amplifier circuits is operated for amplifying any one of received signals supplied by the antennas 10 and 11 for polarized wave reception, power consumption can be reduced.
    • 要解决的问题:提供能够简化布线并降低功耗的信号切换电路。 解决方案:通过调节器17和18将输出端子的电压切换到任意电压,调节器17和18中的任何一个被操作,并且只有放大器电路12和13之一用于放大由天线10和11提供的用于极化的接收信号 操作波接收,以便在控制输出端子的直流电压的同时切换输出到输出端子的信号。 然后,不需要任何专用的控制线来进行切换,并且可以简化接线。 此外,由于只有一个放大器电路用于放大由天线10和11提供的用于极化波接收的接收信号中的任何一个,所以可以降低功耗。