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Method and apparatus of electromagnetic measurement

  • US 20070024293A1
  • Filed: 07/07/2006
  • Published: 02/01/2007
  • Est. Priority Date: 07/07/2005
  • Status: Active Grant
First Claim
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1. A method of electromagnetic measurement, comprising:

  • directing an electromagnetic field sensor having directivity that a received band is widened in accordance with a measurement distance toward a device under test; and

    receiving an electromagnetic wave while shifting the received band in sequence to thereby measure electromagnetic interference, wherein a plurality of long and short measurement distances between the device under test and the electromagnetic field sensor are set, measurement at the long measurement distance is performed a plurality of times, and measurement at the short measurement distance is performed on a received band where electromagnetic interference is measured by the measurement at the long measurement distance.

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