Akira Itoh graduated from the Department of Electrical Engineering, Nihon University, in 1977 and received his M.S. degree in 1979. He received his Ph.D. degree later. In 1979, he became a Research Associate at Tokyo National College of Technology where he was promoted to an Assistant Professor in 1986 and to an Associate Professor in 1994. He has been engaged in research on the scattering transient phenomena of electromagnetic waves.
Response of a dielectric sphere for electromagnetic pulsed wave—cases of back- and forward-scattering
Article first published online: 22 MAR 2007
Copyright © 1995 Wiley Periodicals, Inc., A Wiley Company
Electronics and Communications in Japan (Part II: Electronics)
Volume 78, Issue 11, pages 10–23, November 1995
How to Cite
Itoh, A. and Hosono, T. (1995), Response of a dielectric sphere for electromagnetic pulsed wave—cases of back- and forward-scattering. Electron. Comm. Jpn. Pt. II, 78: 10–23. doi: 10.1002/ecjb.4420781102
- Issue published online: 22 MAR 2007
- Article first published online: 22 MAR 2007
- Dielectric sphere;
- electromagnetic wave;
- pulse wave;
- transient phenomena;
- numerical inversion of Laplace transform
It is important to analyze the scattering phenomena of a dielectric sphere in conjunction with the improvement of performance of weather radar to observe rain clouds. This paper considers the transient scattering phenomena when a plane electromagnetic pulse wave is incident on a dielectric sphere. Specifically, the responses of the back- and forward-scattering observed at distant points are presented. The response waveforms are compared when the permittivity, loss, and incident waveform are varied. Analyzing the typical response waveforms, the propagation paths were estimated from the characteristics of the response time and waveform so that the scattering phenomena were studied. The fast inversion of Laplace transform (FILT) method was used for the calculation of the transient responses.