NDLI: A comparative study of the effective propagation constant in a random medium containing coated dielectric particles

Content Provider	IEEE Xplore Digital Library
Author	Nanbu, Y. Matsuoka, T. Tateiba, M.
Copyright Year	1998
Description	Author affiliation: Dept. of Electr. Eng., Sasebo Coll. of Technol., Japan (Nanbu, Y.)
Abstract	Studies of the propagation and scattering of waves in random media containing dielectric particles have previously been made with applications to remote sensing technology and material science. The particles in natural geophysical terrain and in composite materials consist of different constituents. Therefore it is important to have a medium model containing dielectric particles consisting of two layers with different materials. This model may be used to study waves propagating in media such as melting snow, wet snow, soil moisture and composite materials with coated granules. In this paper, we treat the medium model whose coated spherical particles are randomly distributed. The effective propagation constant (K/sub eff/) in a random medium containing coated dielectric particles has been analyzed by conventional methods: EFA (effective field approximation, Foldy's approximation), QCA (quasicrystalline approximation) and QCA-CP (QCA with coherent potential). These methods, however, have been indicated to become invalid for particles coated with a material having high dielectric constant; we have thus presented a new method valid for them. This paper compares K/sub eff/ of our method with those of the conventional methods by changing the volume fraction and the structure of particles. As a result, our method is shown to be more powerful for the analysis of K/sub eff/.
Starting Page	48
Ending Page	50
File Size	245222
Page Count	3
File Format	PDF
ISBN	0780344030
DOI	10.1109/IGARSS.1998.702794
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-07-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Propagation constant Materials science and technology Composite materials Dielectric materials Snow Quantum cellular automata Particle scattering Random media Remote sensing Soil moisture
Content Type	Text
Resource Type	Article

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