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 ElectroDynamic Systems Software ScientificTM Radiolocation Systems ResearchTM 
Antenna array Complex directional antenna consists of separate near-omnidirectional antennas (radiating elements) positioned in the space and driven by high-frequency … (from 'Glossary' of our web–site)  |
All articlesNumerical analysis of level of uncoupling between transmitting and receiving broadband arrays with allowance for beam formersThe principles of constructing antenna arrays (AA) and beam formers (BF) for broadband isolation increase between AA are formulated. The values of isolation levels for cosine and exponential amplitude distributions at the BFD outputs of microstrip broadband array antennas of various ... Modified: 03/25/2008 Tags: analysis , transmitting , receiving , broadband , antenna array , AA Path: Home / Publications / Articles / 2008 / Numerical analysis … Ultrawideband ribbon antenna array with wide-angle scanningA variant of constructing an ultrawideband wide-angle antenna array based on a multilayer ribbon structure is suggested; the mathematical model of this antenna system is described and the results of numeric modeling are presented.
Speaking about the effectiveness of various ways to provide ultrawidebandness ... Modified: 11/17/2007 Tags: wideband , ribbon , antenna array , scanning , AA Path: Home / Publications / Articles / 2007 / Ultrawideband ribbon … Application of iterative method of calculation of full electromagnetic field for conformal antenna arraysA method for solving boundary problems of electrodynamics for convex periodical antenna arrays by reduction to analogous boundary problems for flat surface using an iterative procedure is examined.
The work [1] describes one of the variants of the boundary layer method, based on the asymptotical solution of the bound system of parabolic ... Modified: 04/19/2007 Tags: iterative , method , calculation , electromagnetic , field , conformal , antenna array , AA Path: Home / Publications / Articles / 2007 / Application of iterative … Influence of boundary effects on characteristics of wideband antenna arrayBased on the solution of the boundary value problem for an infinite antenna array, a mathematical model of a finite flat antenna array in an infinite screen with impedance structure is built. Results of calculations are given by the example of radiant strips.
In the work [1] based on the model of an infinite antenna ... Modified: 01/01/2007 Tags: boundary effect , wideband , antenna array , AA , strip Path: Home / Publications / Articles / 2007 / Influence of boundary … Research of impedance properties of receiving array of rectangular waveguides ... 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 the article [1] two requirements for radiant strips (RS) of a wideband wide-angle antenna array (AA) are formulated: they must have small electric sizes and be located in a plane, wave impedance
Z
of which satisfies the condition
, where
W
=120π — wave impedance of the free space, in the entire working area.
This article ... Modified: 12/14/2006 Tags: antenna array , rectangular , waveguide , AA Path: Home / Publications / Articles / 2006 / Research of impedance … Characteristics of infinite and finite antenna arrays of printed-circuit vibrator radiators ... of rectangular printed–circuit radiators in plane phased arrays.— Interinstitute collection of scientific works. Machine design of microwave devices and systems.— M.: MIREA, 1981, p.58...77. (In Russian).
Filippov V.S. Boundary waves in finite antenna arrays. Proceedings of institutes of MV and SSO USSR. Radioelectronics, 1985, t. 28, no.2, p.61...77. (In Russian).
The radiator in question is a thin metallic plate, located on a single side of the dielectric substrate with dielectric permittivity ... Modified: 01/31/2006 Tags: infinite , finite , antenna array , AA , vibrator , radiator Path: Home / Publications / Articles / 2006 / Characteristics of infinite … Boundary waves in finite antenna arraysBoundary effects in finite antenna arrays as a result of interference of unperturbed array field and boundary wave field, excited at the boundary of the array are researched. The boundary wave equation is derived and the iterative method of solving it is suggested. Numerical results ... Modified: 01/13/2006 Tags: boundary wave , finite , antenna array Path: Home / Publications / Articles / 2006 / Boundary waves … Theoretical investigation of the properties of broadband antenna array on arbitrary convex smooth impedance surfaceOn the basis of the asymptotic theory of diffraction, under the condition of slowness of change in the curvature radii, the mathematical theory of broadband conformal antenna array has been constructed. As an illustration of the operation of this model, the characteristics of the radiator located on an elliptical impedance surface are presented.
When antenna systems are located on objects with curved surfaces, there ... Modified: 03/04/2005 Tags: broadband , antenna array , impedance surface , conformal array , CA Path: Home / Publications / Articles / 2005 / Theoretical investigation … Sorted by relevance / Sort by date Back to the list |
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