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Microwave sensor for detecting a discharge occurring in an electrical apparatus

  • US 5,726,576 A
  • Filed: 04/10/1996
  • Issued: 03/10/1998
  • Est. Priority Date: 04/10/1996
  • Status: Expired due to Fees
First Claim
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1. A microwave sensor comprising:

  • an antenna unit which is to be placed in the vicinity of an electric apparatus and which receives a microwave signal generated by a discharge occurring in the electric apparatus;

    a first band-pass filter that allows a predetermined frequency of the microwave signal received by said antenna unit to pass through said filter;

    amplifying means for amplifying the microwave signal output from said first band-pass filter;

    a second band-pass filter that removes noise produced by said amplifying means;

    converting means for converting the microwave signal output from said second band-pass filter into a video signal; and

    video amplifying means for amplifying the video signal output from said converting means.

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