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Abstarct In this chapter, we will briefly discuss the evolution for the need of the novel materials, what has been done so far, and what needs to happen in the future. We will give Maxwell’s equations for general anisotropic media and discuss dyadic techniques that can be used in the analysis of anisotropic medium. We will introduce k-domain and detail how to use in the analysis of the general anisotropic...
Abstarct In this chapter, the general dispersion and constitutive relations for anisotropic medium are derived. The detailed analysis of wave propagation and the dispersion characteristics of uniaxially, biaxially anisotropic medium is given. Plane waves in anisotropic media are studied.
Abstarct In this chapter, we derive the general dispersion and constitutive relations for a gyrotropic medium. A detailed analysis of wave propagation in an electrically gyrotropic or gyroelectric medium will be given. We then obtain the dispersion relations in terms of angle $$ \theta $$ , which is the angle between the wave normal and the external magnetic field, and in terms of the transverse...
Abstarct In this chapter, method of dyadic Green’s function (DGF) for electromagnetic wave problems is introduced. A very practical method to obtain dyadic Green’s function for general anisotropic medium is discussed. The duality relations between DGFs are obtained and their application is illustrated. DGFs for unbounded and layered uniaxially anisotropic, unbounded and layered gyrotropic medium are...
Abstarct In this chapter, we will discuss the radiation characteristic of anisotropic medium by studying specifically dipole radiation from a uniaxially layered anisotropic media. We will calculate the far field radiation from an arbitrarily oriented Hertzian dipole when the dipole is placed over or embedded in a layered uniaxially anisotropic medium which is bounded above and below by isotropic media...
Abstarct The electromagnetic radiation from an electric Hertzian dipole in an electrically gyrotropic medium such as magnetically biased cold plasma, i.e. magnetoplasma, is very important for radio propagation problem in the ionosphere and for some problems in laboratory plasmas.
Abstarct The advances in microwave communication systems require material properties which can give optimum device performance. New materials are being developed in order to meet the requirements of design processes as technology matures. These new materials are composite mixtures of isotropic, anisotropic or gyrotropic materials. The purpose of such materials is to obtain more desirable constitutive...
Abstarct In this chapter, the theory that is introduced in the previous chapters for isotropic, anisotropic and gyrotropic materials finds an application. Application examples using isotropic, anisotropic and gyrotropic materials will be introduced with detail. Most of the design examples have analytical stage involving theory of the operation, simulation stage for verification of the design and experimental...
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