ВПЛИВ КОНСТРУКТИВНИХ РІШЕНЬ КОМПОНУВАННЯ ТА ПОХИБОК ВИГОТОВЛЕННЯ ЕЛЕМЕНТІВ ШИРОКОСМУГОВОЇ РУПОРНОЇ АНТЕНИ НА ЇЇ ТЕХНІЧНІ ХАРАКТЕРИСТИКИ

Abstract

The results of the research of the main releases of arrangement of horn antenna with two ridges, which differ in the ways of fixing the elements: bolt connection (rivets) and soldering (welding), are presented in the article. The influence of inaccuracies in the manufacture of particular antenna elements (errors in the geometric dimensions of the waveguide and the horn aperture, errors in the location of the feed pin, differences in the relative permittivity of the insulating material from the calculated one and others) and their interconnections (the width of the slots between the horn aperture plates, the distance between the ridges at the feeding point) on the main antenna characteristics (voltage standing-wave ratio, gain, radiation pattern). The researches were carried out using software environments for computer-aided designing, modeling and optimizing three-dimensional electromagnetic systems ANTENNA MAGUS and CST STUDIO SUITE. It has been found that with the same accuracy of manufacturing the constituent elements of a wideband horn antenna, the considered releases of arrangement provide similar technical characteristics. The research of manufacturing errors of the antenna elements and their interconnections showed that the longitudinal waveguide dimensions, the distance between the ridges at the point of excitation, the location and diameter of the feed pin, and also the dielectric characteristics of the insulating material have the greatest influence on the characteristics of the antenna. It has been established that a change in particular antenna sizes by 10% can lead to a significant deterioration in its matching. The system of tolerances for the sizes and connections of antenna elements, the adherence of which will ensure the conformity of the characteristics of the manufactured example to those obtained in the process of modeling and optimization using specialized software, is justified.