Title :
New method for measuring properties of nonhomogeneous materials by a two-polarization forward-scattering measurement
Author :
Toropainen, Anssi P.
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
12/1/1993 12:00:00 AM
Abstract :
A novel method for measuring properties of grainy materials using a two-polarization scattering measurement combined with free-space phase measurement is introduced. The theoretical background of the measurement method is presented. Laboratory measurements of the depolarized scattering cross sections of white rice, green lentils, polystyrene beads, polyethylene beads, and their mixtures at 10 and 35 GHz using a vector network analyzer and two horn antennas are then presented. Results are compared with those based on the first-order multiple scattering theory. A low-cost set-up for industrial measurements is suggested
Keywords :
electromagnetic wave polarisation; electromagnetic wave scattering; microwave measurement; permittivity measurement; phase measurement; 10 GHz; 35 GHz; depolarized scattering cross sections; first-order multiple scattering theory; free-space phase measurement; grainy materials; green lentils; horn antennas; industrial measurements; low-cost set-up; mixtures; nonhomogeneous materials; polyethylene beads; polystyrene beads; two-polarization forward-scattering measurement; vector network analyzer; white rice; Antenna measurements; Density measurement; Laboratories; Manufacturing industries; Particle scattering; Permittivity measurement; Phase change materials; Phase measurement; Rayleigh scattering; Size measurement;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
