Equivalent Dielectric Constant of Periodic Media
نویسنده
چکیده
The behavior of electromagnetic waves can be controlled by controlling the constitutive parameters of the medium in which EM waves propagate. This can be accomplished to some extent by mixing different materials with different pemittivities, permeabilities, and conductivities as shown in the previous chapter. It was shown that the effective permittivity of a composite medium is not only a function of the premittivities of the compounds and their volume fraction, but also a function of mixing particles geometry and orientation and arragement. So far we have assumed particles are randomly positioned with respect to each other. The other extreme is a perfect crystalline, or periodic, particle arrangement which will be studied in this chapter.
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