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Identification and analysis of source emissions through harmonic phase comparison

  • US 8,537,050 B2
  • Filed: 10/25/2010
  • Issued: 09/17/2013
  • Est. Priority Date: 10/23/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving an electromagnetic energy emission with an antenna connected to a receiver; and

    using a processor to;

    select a candidate harmonic of a device from an expected spectral region of the electromagnetic energy emission,use a frequency location of the candidate harmonic to determine frequency locations of additional harmonics,identify, from the received electromagnetic energy emission, at least two of said additional harmonics,measure a phase of each harmonic, andcompare the measured phases to identify the device as a source or a non source of the electromagnetic energy emission.

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