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OPTIMIZATION OF THE FORM SECTION
OF THE REFLECTOR HORN-REFLECTOR ANTENNA
Svyatoslav V. Dudarev, South Ural State University (SUSU), Chelyabinsk, Russia, slava.dudarev1996@yandex.ru
Alexander V. Dudarev, South Ural State University (SUSU), Chelyabinsk, Russia, alexdydar@yandex.ru
Abstract
In the modern realities of radar and radio navigation both ground and air requires smaller sizes of emitting elements, called antennas. This approach is widespread in almost all areas of technology and the name of it — microminiaturization. The article simulates a horn-reflector antenna with a reflector of a special section. To the antenna imposed strict requirements to dimensions (a vertical dimension of not more than 6?) and the quality matches the directivity with cosequences. The antenna radiation pattern in the vertical plane should be in the form of a cosecant. Horn- reflector antenna with reflector, calculated by the method of geometric optics, does not meet the requirements. So this article is quite an interesting way to significantly improve the quality of coincidence of the radiation pattern with a cosecant without increasing the size. The section of the reflector of the horn-reflector antenna is represented as a spline, the position of some points of which is set in the form of optimization parameters. Through optimization of the spline parameters was derived a fairly high coincidence of the directivity of the antenna in the vertical plane with the template cosequences radiation pattern. The problem was solved in the software package ANSYS HFSS (available to all students and staff SUSU) finite element method (FEM). Optimization of the cross section of the reflector is carried out by template cosequences radiation pattern loaded in the aforementioned software package, using a genetic optimization algorithm (genetic algorithm). Thus, using the optimization of the reflector section of the horn-reflector antenna, a high coincidence of the antenna radiation pattern in the vertical plane with the pattern of the cosecant radiation pattern without increasing the size of the antenna was obtained.
Keywords:cosecant radiation pattern, horn-reflector antenna, pattern optimization of the radiation pattern, spline, finite element method.
References
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Information about author:
Svyatoslav V. Dudarev, master student, Department «Design and manufacture of radio equipment», South Ural State University (SUSU), Chelyabinsk, Russia
Alexander V. Dudarev, master student, Department «Design and manufacture of radio equipment», South Ural State University (SUSU), Chelyabinsk, Russia