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Transmitting apparatus

  • US 6,999,736 B2
  • Filed: 01/08/2002
  • Issued: 02/14/2006
  • Est. Priority Date: 03/27/2001
  • Status: Expired due to Fees
First Claim
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1. A transmitting apparatus, comprising:

  • a transmission circuit receiving an intermediate frequency signal superposed on a DC voltage, converting the intermediate frequency signal to a microwave signal and outputting;

    a power supply circuit receiving said DC voltage as an input and supplying power to said transmission circuit;

    an input voltage detecting circuit detecting said input DC voltage;

    a switch circuit turning on/off the power supplied from said power supply circuit to said transmission circuit; and

    a control circuit controlling said switch circuit to be turned off based on a detection output from said input voltage detecting circuit when said DC voltage has such a value that the power supplied from said power supply circuit to said transmission circuit causes abnormal operation of said transmission circuit.

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