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Sensor apparatus for measurement of material properties

  • US 9,863,893 B2
  • Filed: 05/29/2013
  • Issued: 01/09/2018
  • Est. Priority Date: 05/30/2012
  • Status: Expired due to Fees
First Claim
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1. A method of material constituent measurement, the method comprising:

  • providing at least one metamaterial assisted sensor, each sensor comprising at least one antenna configured as a transmitter of electromagnetic (EM) energy, a receiver of EM energy, or a combination thereof, wherein a metamaterial of the at least one metamaterial assisted sensor comprises a negative refractive index;

    placing at least one metamaterial assisted sensor inside a conduit to probe a material;

    exciting at least one metamaterial assisted sensor via a signal source at one or more frequencies;

    measuring a transmitted energy level, a reflected energy level, a frequency shift, or a combination thereof in response to the sensor excitation; and

    applying transfer functions to estimate via a programmable computing device, one or more material fractions associated with the probed material based on amplitude data, phase data, frequency shift data or a combination thereof in response to the transmitted energy level, reflected energy level, a measured frequency shift, or combination thereof to determine a gas fraction and a liquid fraction.

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