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

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 ...

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

Experiment–calculated method of estimating the radiophysical parameters of lossy claddings, deposited on parts of a complex-form object

Using the mathematical model of dispersion of electromagnetic waves on complex-form objects, the article presents the method of estimating radiophysical parameters of local parts of the surface with claddings, based on the results of measuring angular dependence of effective dispersion surface.
...

Scattering of electromagnetic waves by mirror antennas

Scattering of a plane wave by mirror antennas with vibrating radiators is considered. The Fourier coefficients of the vector function equal to the current density on the mirror metal and the tangent component of the electrical vector on the geometric surface, complementing the surface of the mirror to close in some complete function system. Using these coefficients, the series for the given vector-function, converging to the L
2
(S
0
) surface norm, with each of the terms satisfying to the corresponding...

Diffraction of electromagnetic waves on a non–Rayleigh bodies with zero and impedance boundary conditions

The method of solving problems of diffraction on non-Rayleight bodies, composed of several Rayleigh bodies is explained. The scattered field is constructed as a sum of fields, created by the assemblage of multifields, each of them is located in the corresponding point of one of the composite bodies. The samples involving two tangent to the generatrix of the cylinder and two touching in the single point spheres are considered. For the former of these samples, the curves of distribution current density...

Boundary value problems and diffraction of waves at surfaces with a variable admittance

The problem of diffraction of electromagnetic waves on a curvilinear surfaces with piecewise continuous admittance (impedance) boundary conditions, particularly on open-ended metallic surfaces is considered. It is shown that the coefficients of Fourier kind for some complete function ...

Scattering of electromagnetic waves by antennas (overview)

This is given the overview of the known approximate methods of calculating the scattering of electromagnetic waves by antennas, including calculating the integral and differential surfaces of dispersion; simple formulas for estimating these values are given. In addition, some results that belong to the authors of the work are stated.
Radio ...

GuidesArray Coaxial™ is used by engineers for projecting and exploring the characteristics of two-dimensional periodic phased antenna arrays for coaxial waveguides.