Title :
Study on scattering phenomena of mm-wave due to micro dielectric phenomena
Author :
Murooka, Y. ; Nakano, T.
Author_Institution :
Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Pre-breakdown and breakdown phenomena in liquids have been studied by using a high speed and optical observation technique. From the results, it is found that small bubbles, smaller than the wave length of light, played an important role of electronic conduction in liquids. In order to analyze the behavior of electron movement, the scattering phenomena of mm-wave due to the micro dielectric material smaller than the wave length of mm-wave have been investigated. The refraction phenomena of light is due to a small bubble under the light being a kind of electromagnetic wave. In this experiment, the mm-wave of 50 GHz is used and spherical glass whose sizes are 3, 6, 10, 12, 18, 24 and 30 mm in diameter are also used. The experimental results shows that the scattered electric field distribution measured using a 1 mm doublet antenna agrees qualitatively with the distribution calculated by the wave optics theory
Keywords :
bubbles; electric breakdown; electric fields; electromagnetic wave scattering; electron mobility; insulation testing; light reflection; millimetre wave propagation; test equipment; 10 mm; 12 mm; 18 mm; 24 mm; 3 mm; 30 mm; 50 GHz; 6 mm; breakdown phenomena; bubbles; diameter; doublet antenna; electromagnetic wave; electron movement; electronic conduction; insulating liquids; light refraction; micro dielectric phenomena; millimetre wave scattering; pre-breakdown; scattered electric field distribution; spherical glass; wave optics theory; Dielectric materials; Electric breakdown; Electromagnetic refraction; Electromagnetic scattering; Electron optics; High speed optical techniques; Light scattering; Liquids; Optical refraction; Optical scattering;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414054
