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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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“Ultrawideband ribbon antenna array with wide-angle scanning” Speaking about the effectiveness of various ways to provide ultrawidebandness and wide angleness of a receiving antenna system (AS), we should note that in an antenna array … |
A 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 and wide angleness of a receiving antenna system (AS), we should note that in an antenna array (AA) it is usually rather difficult to combine these two properties.
The aim of this work is to suggest a variant of constructing of a receiving AA providing a wide band of operating frequencies and wide sector of operating angles simultaneously. Then, develop a mathematical model of the suggested AA. Based on the constructed mathematical model, conduct a series of numeric experiments to discover the main properties of the AA.
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In section of “Publications-Archive” the “Trends in the development of broadband phased antenna arrays (overview)” archival article is published.
Authors: D. I. Voskresensky, Y. V. Kotov, E. V. Ovchinnikova.
In the article the description of wideband radiators on the base of symmetrical slot line is presented. Different types of slot and different variants of excitement unit are considered. Methods of slot antennas analysis are shown. In conclusion antenna arrays on the base of slot radiators are presented.
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