UDC 621.396.67.01
SCATTERING OF ELECTROMAGNETIC WAVES BY DIELECTRIC AND METALLIZED OBJECTS WITH AXIAL SYMMETRY
A. V. Bogoslovsky, Ph.D. (Tech.), deputy head of the Department of Radio Electronics, VUNC VVS «VVA», Voronezh, Russia;
orcid.org/0000-0002-6469-3366, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The scattering properties of dielectric and metallized objects with axial symmetry are estimated using CST MWS – Computer Simulation Technology Microwave Studio electrodynamic modeling software package. In order to study scattering diagrams for various types of spatial distribution of reflective surfaces complex permittivity, secondary electromagnetic radiation was modeled by finite-length cylinders with regular cross-sectional radius for partial and complete metallization of side surfaces. The distribution of surface currents on a cylinder was determined by FEM (Finite Element Method). The calculation of polarization components of the field and a cylinder scattering diagram was carried out by activating Frequency Domain Solver built into the structure of CST MWS program, which provides the determination of the coordinates in approximating grid with different types of cells. In sampling zones, complex amplitudes of currents were determined by the method of MoM moments – Method of Moments with partial inversion of boundary value problems operators. The results obtained show that the maxima of scattering diagrams of cylinders with perfectly conducting bands on side surfaces are concentrated in space sectors opposite to metallization region. The results also show that in the sector of 60° width angles the cylinder scattering diagrams of equal electrical dimensions with full and partial metallization are similar in shape. The aim of the work is to study the patterns of secondary electromagnetic radiation of dielectric objects with different degrees of surface metallization.
Key words: an object with axial symmetry, electromagnetic waves scattering, scattering diagram, electrodynamic modeling program, boundary value problem of electrodynamics.