United States of America, As Represented by the Secretary of Agriculture

The United States of America As Represented by the Secretary of

The United States of America As Represented by the Department of Agriculture

Samir Trabelsi

Stuart O Nelson

Andrzej W Kraszewski

Jochem T Roelvink

A low cost planar transmission line sensor and simple calibration method for measuring the complex permittivity of materials with minimal sample preparation over a wide band of radio- and microwave frequencies. The sensor is also used for measuring anisotropic dielectric properties of materials with a defined grain.

Planar transmission-line permittivity sensor and calibration method for the characterization of liquids, powders and semisolid materials

A microwave sensor and algorithm for instantaneous and nondestructive determination of bulk density and moisture content in granular or particulate materials at a single microwave frequency, especially agricultural commodities, which uses an inexpensive microwave circuit for determining the real and imaginary parts of relative complex permittivity using an algorithm for phase correction.

Microwave sensor and algorithm for moisture and density determination

A universal calibration method and apparatus for nondestructive real time determination of moisture content in particulate or granular materials by radio-frequency sensors is described which is bulk-density and material-independent and remains valid across instruments of different designs.

Universal dielectric calibration method and apparatus for moisture content determination in particulate and granular materials

A method for simultaneously and independently measuring moisture content and bulk density of particulate materials using radio-frequency measurements allowing for on-line, real-time monitoring and control. Moisture and density are determined by measurements of complex permittivities. This method is based on the use of the dielectric properties of the materials for density and water content determination.

Growing community of inventors

Athens, GA, United States of America

Samir Trabelsi