Analytical Method of Constructive Synthesis of Compact Polarizers with Maximally Flat Phase-Frequency Characteristic Based on Two Reactive Elements in Square Waveguide
{"title":"Analytical Method of Constructive Synthesis of Compact Polarizers with Maximally Flat Phase-Frequency Characteristic Based on Two Reactive Elements in Square Waveguide","authors":"F. F. Dubrovka, A. V. Bulashenko","doi":"10.3103/s0735272722090035","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper proposes a developed approximate analytical method of constructive synthesis of compact polarizers based on two reactive elements in a square waveguide. The analytical synthesis was carried out under conditions of the absence of reflection and obtaining a required phase shift. As a result, simple formulas have been derived that determine parameters of phase-shifting elements and the electrical distance between them. The constructive synthesis was performed under conditions of the equality of required and real admittances of posts and diaphragms in a square waveguide and their derivatives at the central frequency of the working frequency band. As a result, the real geometrical dimensions of polarizers based on two posts and based on two diaphragms in a square waveguide were determined that provided for maximally flat phase-frequency characteristic. It has been shown that the polarizer based on two posts in a square waveguide can ensure the working frequency band of 4% or 13% while reflecting the electromagnetic energy of less than 1% or 10%, respectively, and differential phase shift Δφ = 90°±1°. However, polarizer based on two diaphragms in a square waveguide under the same conditions can ensure the working frequency band of up to 11% or 18%, respectively. The theoretical results were confirmed by experimental data.</p>","PeriodicalId":52470,"journal":{"name":"Radioelectronics and Communications Systems","volume":"24 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-02-07","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/s0735272722090035","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
The paper proposes a developed approximate analytical method of constructive synthesis of compact polarizers based on two reactive elements in a square waveguide. The analytical synthesis was carried out under conditions of the absence of reflection and obtaining a required phase shift. As a result, simple formulas have been derived that determine parameters of phase-shifting elements and the electrical distance between them. The constructive synthesis was performed under conditions of the equality of required and real admittances of posts and diaphragms in a square waveguide and their derivatives at the central frequency of the working frequency band. As a result, the real geometrical dimensions of polarizers based on two posts and based on two diaphragms in a square waveguide were determined that provided for maximally flat phase-frequency characteristic. It has been shown that the polarizer based on two posts in a square waveguide can ensure the working frequency band of 4% or 13% while reflecting the electromagnetic energy of less than 1% or 10%, respectively, and differential phase shift Δφ = 90°±1°. However, polarizer based on two diaphragms in a square waveguide under the same conditions can ensure the working frequency band of up to 11% or 18%, respectively. The theoretical results were 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.