{"title":"Optimization of Radiation Characteristics of Linear Focusing Array Consisting of Semitransparent Mirrors","authors":"Mykhaylo Andriychuk, Victor Tkachuk","doi":"10.3103/s0735272723090030","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper is devoted to the optimization of the radiation characteristics of a linear focusing array, which consists of a set of semitransparent inclined elements (mirrors), an excitation source, and an end opaque mirror. The array geometry satisfies the quasi-optical conditions, while the inclination of mirrors is set in such a way that the array allows us to focus the scattered field in the Frenzel zone and the far zone. The formation of a radiation pattern (RP) close to the specified one, or the provision of maximum radiation in the given region of angular coordinates is achieved by choosing the reflection and transmission coefficients of semitransparent elements of the array. To ensure these requirements, a variational statement of the optimization problem is used. The maximization of corresponding functionals is achieved numerically by the methods of successive approximations. Numerical experiments demonstrate high accuracy in fulfilling the requirements of the radiation characteristics which is also confirmed by experimental data.</p>","PeriodicalId":52470,"journal":{"name":"Radioelectronics and Communications Systems","volume":"27 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radioelectronics and Communications Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s0735272723090030","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
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Abstract
The paper is devoted to the optimization of the radiation characteristics of a linear focusing array, which consists of a set of semitransparent inclined elements (mirrors), an excitation source, and an end opaque mirror. The array geometry satisfies the quasi-optical conditions, while the inclination of mirrors is set in such a way that the array allows us to focus the scattered field in the Frenzel zone and the far zone. The formation of a radiation pattern (RP) close to the specified one, or the provision of maximum radiation in the given region of angular coordinates is achieved by choosing the reflection and transmission coefficients of semitransparent elements of the array. To ensure these requirements, a variational statement of the optimization problem is used. The maximization of corresponding functionals is achieved numerically by the methods of successive approximations. Numerical experiments demonstrate high accuracy in fulfilling the requirements of the radiation characteristics which is also confirmed by experimental data.
期刊介绍：
Radioelectronics and Communications Systems covers urgent theoretical problems of radio-engineering; results of research efforts, leading experience, which determines directions and development of scientific research in radio engineering and radio electronics; publishes materials of scientific conferences and meetings; information on scientific work in higher educational institutions; newsreel and bibliographic materials. Journal publishes articles in the following sections:Antenna-feeding and microwave devices;Vacuum and gas-discharge devices;Solid-state electronics and integral circuit engineering;Optical radar, communication and information processing systems;Use of computers for research and design of radio-electronic devices and systems;Quantum electronic devices;Design of radio-electronic devices;Radar and radio navigation;Radio engineering devices and systems;Radio engineering theory;Medical radioelectronics.
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