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Electromagnetic radiation in a corner reflector consisting of metallic circular rods of perfect conductor is formulated using a model of layered cylindrical arrays. Radiation from Hertzian dipole coupled to the uniform and tapered corner reflectors is analyzed. The formulation is rigorous. It is shown that the directivity in forward direction is prominently enhanced in both H-plane and E-plane, when the corner reflector is composed of metallic circular rods with radii linearly increasing from the origin. Comparisons with radiation patterns of conventional two plate corner reflector are also presented. [ABSTRACT FROM AUTHOR]

Cylindrical EBG structures excited by a Hertzian dipole source and TM polarized plane wave at oblique incidence are analyzed using a rigorous semi-analytical method based on the cylindrical Floquet mode expansion. Concentric and eccentric cylindrical EBG structures are investigated. Resonance and stopband characteristics in the transmission spectra of the cylindrical EBG structures, enhancement and shading effects in the excited fields, radiation patterns of Hertzian dipole located inside the cylindrical EBG structures in both H-plane and E-plane are numerically studied. Co-polarization and cross-polarizations scattering effects between the electric and magnetic fields are investigated at the oblique incidence of plane waves. [ABSTRACT FROM AUTHOR]

A study is made of oblique incidence of a small-amplitude plane electromagnetic wave on a semi-infinite slab of a collisional turbulent plasma in an external uniform magnetic field. In the small-angle scattering approximation, the condition for neutralizing the effects of oblique incidence and plasma anisotropy on the statistical properties of radiation multiply scattered in the absorbing plasma medium is determined by using the methods of geometrical optics. The validity of this condition was confirmed by numerical calculations based on the statistical modeling technique. The effect of the shape of the spectrum of the electron density fluctuations on the shape of the angular power distribution of a multiply scattered radiation is investigated. © 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]