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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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Phased antenna arrays (PAA) of waveguides with complex cross sections are analyzed in this work. Particularly, the analysis focuses on linearly polarized waveguides with dielectric matching units (inserts, covers and waveguide transformers). The study of power and frequency characteristics ...
Modified: 04/04/2008
Tags: broadband , waveguide , radiator , antenna array , PAA , polarization
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Equations for waveguide, impedance and lens antenna arrays are formulated taking into account excitation conditions and interconnection between radiators. The arrays can be located on flat or curved surfaces. Antenna arrays
Modified: 04/19/2007
Tags: antenna array , equation , waveguide , lens
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Presents frequency dependencies of surface impedance near an array of rectangular waveguides when incident to flat electromagnetic wave, computed on a PC are shown. When placing radiant strips over an optimized waveguide array, contact ratio in frequency up to 2 and more in sector of angles ±55° in main planes can be obtained. In ...
Modified: 12/14/2006
Tags: antenna array , rectangular , waveguide , AA
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Various schemes of projective methods: the incomplete Galerkin method scheme, used when researching the electromagnetic waves in waveguides, filled with anisotropic medium; incomplete Galerkin methods with impedance boundary conditions, modified projective linking method are considered. Radio engineering and electronics
Modified: 12/31/2005
Tags: Projective method , waveguide , Galerkin method , electromagnetic wave
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The infinite array of stepped plane-parallel waveguides with dielectric inserts and projected dielectric elements, excited by TEM-waves is analyzed in this article using the integral equation for electric field (polarization current) in the projected element and field linking method in the horn; ...
Modified: 12/30/2005
Tags: integral equation , polarization , current , analysis , waveguide , antenna array , dielectric
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... range of the applied electrodynamics problems, witch can be solved analytically. As an example, the advantage of this method over the classic method of variable division has been demonstrated for determining Е -wave family in triangular cross section waveguide while solving the internal boundary value problems with two–dimensional Helmholtz equation. An obvious example of realization of advantages of the generalized Fourier method GFD [1] over the classic one in solving of applied electrodynamics ...
Modified: 05/13/2004
Tags: Fourier , waveguide , triangular , boundary problems
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The results of estimating the characteristics of coaxial emitters in flat phased arrays. Rectangular and circular waveguides are used as emitters in phased arrays [1]. We are interested in arrays made with open endings of coaxial waveguides excited by a mode . Such waveguides have a fairly high operating power while their cross-section sizes are much less than that ...
Modified: 08/08/2003
Tags: coaxial , waveguide , emitter , phased array
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