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“RefereesHelp Race” This software can help register the contestants and also makes it easy to get the tournament scores, fill and print the score-sheets. |
RefereesHelp Race is a professional solution for keeping record at running, swimming and skiing competitions. RefereesHelp Race can help register the contestants and also makes it easy to get the tournament scores, fill and print …
This software can help register the contestants and also makes it easy to get the tournament scores, fill and print the score-sheets.
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“Characteristics of radiation of continuously excited spherical antenna” There is known [1] an approximate method for calculating DD and CDD of convex beam diffractional antennas, based on representing radiation field as a superposition of magnetic current … |
It is shown that when the antenna radius is increased, directive gain of spherical antenna with optimal excitation asymptotically approaches directive gain of the equivalent flat cophasal aperture with uniform amplitude–phase distribution of collinear currents. The …
There is known [1] an approximate method for calculating DD and CDD of convex beam diffractional antennas, based on representing radiation field as a superposition of magnetic current fields and induced electrical currents on the ideally conducting surface of the antenna in given amplitude−phase distribution of the exciting magnetic current. Electric currents are determined in short−wave approximation. Amplitude−phase distributions of the exciting magnetic current, providing maximum value of CDD of non−superdirective antenna are examined in works [1…3] in approximations of physical optics.
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In section of “Publications-Dissertations” the “Metal-dielectric structures in antenna arrays, radio-absorbing coatings and near-omnidirectional radiators” dissertation is published.
Author: I. V. Sutyagin.
The aim of the dissertation is to develop electrodynamic-level mathematical models describing printed-circuit radiators of an irregular shape within an antenna array that make it possible to analyze the radiation pattern characteristics of separate printed-circuit radiators located on finite screens of an irregular shape and mathematical models for analyzing the characteristics of ultrawideband ribbon antenna arrays with wide-angle scanning.
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