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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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Equations for the electromagnetic field of the arrays of waveguide radiator located on an infinite wedge



... array radiators is solved. Boundary conditions are formulated on the basis of the general electrodynamic model, the problem is defined, and the common integral relations (obtained by N.V. Kovalenko) of the methods of the tensor Green function, TE and TM fields are given. Then these relations are written down for arrays of waveguide radiators located on an infinite wedge. The integral relations for an infinite wedge are used to deduce systems of linear equations where unknowns are the complex amplitudes ...

Modified: 10/03/2010
Tags: equations , electromagnetic , field , arrays , waveguide , radiator , located , infinite , wedge
Path: Home / Publications / Archives / 2010 / Equations for …



Results of the numeric modeling of a microstrip stub reflector-array antenna



... represented. The mathematical model of a reflectarray allows introducing into a construction of each microstrip element some shunts with controllable loads. It is shown, that due to shunts it is possible to control amplitude and phase of a scattering fields. Antennas

Modified: 03/28/2008
Tags: model , microstrip , antenna array , field
Path: Home / Publications / Archives / 2008 / Results of the …



Method for analyzing characteristics of wave dispersion by cylindrical bodies of arbitrary section



In the paper, the solution method for the problem of electromagnetic waves scattering by cylinder bodies is given. The method is based on 2*pi-periodicity property of functions describing the parameters and distributions of fields and currents on cylinder bodies. The method advantage is the possibility of physical interpretation of results. The example of the proposed method application is given. Mathematical modeling of physical processes. Electromagnetic waves and electronic ...

Modified: 03/26/2007
Tags: electromagnetic wave , field , current
Path: Home / Publications / Archives / 2007 / Method for …



Diffraction problems for surfaces with radio absorbing cover



The principal directions of radio absorbing materials and coatings used to solve the problems of scattered fields management are considered in the paper. The review of the basic methods of the task solution for the bodies of arbitrary geometry with radio absorbing materials and coating is given. The review is based on the use of impedance boundary conditions ...

Modified: 12/07/2006
Tags: diffraction , field , impedance , boundary
Path: Home / Publications / Archives / 2006 / Diffraction problems …



About the maximum power that is drown by the antenna in a lossy medium



It is proved that when the primary incident field in a lossy medium is fixed, the power drawn by the antenna is finite. It is not necessary to limit the direction of the receiving antenna, unlike the case of a lossless medium when this is required to get a finite maximum. The formulas for deriving ...

Modified: 12/09/2005
Tags: power , antenna , field , mode
Path: Home / Publications / Archives / 2005 / About the …


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