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Antenna Array


Antenna array

Complex directional antenna consists of separate near-omnidirectional antennas (radiating elements) positioned in the space and driven by high-frequency …

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Tensor methods in boundary problems of electrodynamics



Solutions for boundary problems of electrodynamics in tensor form are examined. Equations and boundary conditions for Green tensor functions of general kind are formulated. Antenna arrays

Modified: 05/11/2007
Tags: tensor , boundary problem , electrodynamic
Path: Home / Publications / Archives / 2007 / Tensor methods …



Electrodynamics of substances with simultaneously negative electrical and magnetic permeabilities



The optical properties of materials, such as magnetic metals or magnetic semiconductors, having simultaneously negative electrical and magnetic permeabilities are considered. One finds that the refractive index with respect to vacuum is negative; that the Poynting vector and the wave vector of propagating EM waves have opposite signs; that the sign of the Doppler effect is opposite that, for ordinary materials and that the Cherenkov radiation cone is directed backwards rather than forwards. Finally...

Modified: 04/23/2007
Tags: electrodynamic , wave , Poynting , Doppler
Path: Home / Publications / Archives / 2007 / Electrodynamics of substances …



About tensor Green function in boundary problems of electrodynamics



General method for determining tensor Green functions corresponding to various classes of solutions for boundary problems is examined. Antenna arrays

Modified: 04/18/2007
Tags: tensor Green , boundary problem , electrodynamic
Path: Home / Publications / Archives / 2007 / About tensor …



Computing the electrodynamical characteristics of horn antennas



The solution to the inner problem of electrodynamics for horn radiators with perfectly conducting plane flange, powered by cylindrical waveguides, is considered. The results of numerical calculations for the pyramidal and sectorial horns powered by the rectangular waveguide are provided....

Modified: 12/23/2005
Tags: electrodynamic , horn , antenna , radiator
Path: Home / Publications / Archives / 2005 / Computing the …


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