Title :
A new method for measuring properties of unhomogeneous materials using a two-polarization forward-scattering measurement
Author :
Toropainen, A.P.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
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 lenses, polystyrene grains, polyethene grains, 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; 10 to 35 GHz; SHF; depolarized scattering cross sections; forward-scattering measurement; free-space phase measurement; grainy materials; horn antennas; industrial measurements; low-cost set-up; two-polarization scattering measurement; unhomogeneous materials; vector network analyzer; Density measurement; Humidity; Laboratories; Microwave measurements; Particle scattering; Permittivity measurement; Phase measurement; Polarization; Rayleigh scattering; Size measurement;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276829
