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Metamaterial-based direction-finding antenna systems

  • US 8,581,783 B2
  • Filed: 03/10/2011
  • Issued: 11/12/2013
  • Est. Priority Date: 03/10/2011
  • Status: Active Grant
First Claim
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1. A method to determine arrival direction of an electromagnetic signal having a signal frequency and a signal wavelength, comprising the steps of:

  • with an antenna configured to define, at said signal frequency, at least one metamaterial cell between first and second signal ports, rotating said antenna until a differential power that is defined as the difference between received powers from said first and second ports is substantially zero; and

    determining said arrival direction as a normal to said metamaterial cell.

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