Керовані композитні структури мікрохвильового діапазону

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dc.contributor.authorТатарчук, Дмитро Дмитрович
dc.date.accessioned2020-11-19T12:01:11Z
dc.date.available2020-11-19T12:01:11Z
dc.date.issued2020
dc.description.abstractenThe work solves an important scientific and practical problem of developing the theory of composite materials to create a basis for the implementation of new frequency-selective and phase-rotating devices based on composite, semiconductor and thin dielectric resonant structures, as well as improving microwave methods for dielectric materials exploring, including thin films. When performing the work the following results were obtained: 1. The theory of composite materials is developed. The classification of microwave composite structures according to structural and functional features is offered. Theoretical and experimental study of microwave characteristics of polymer-metal composite materials was carried out. Analytical expressions for the calculation of the temperature coefficients of effective dielectric constant and effective tangent of dielectric loss angle of composite dielectric-metal materials were first obtained, which allows calculating the temperature properties of such composites. 2. The theory of composite materials is applied to the controlled frequency-selective planar structures and based on it the calculation method of the controlled frequency-selective planar structures characteristics is developed and experimentally confirmed, which allows the design process of the controlled frequency-selective devices and phase-shifting devices to accelerate. Designs of controlled selective microwave devices based on planar structures have been developed. 3. Theoretical and experimental research of semiconductor frequency-selective structures is carried out. For the first time, a method of controlling the characteristics of semiconductor planar frequency-selective microwave devices is proposed by changing the configuration of conductive regions by an optical method, which creates the basis for the development of fundamentally new designs of frequency-selective and phase-shifting microwave devices with optical control. 4. Based on the study of existing trends in the development of electromechanically controlled microwave devices, the requirements for modern actuators for microwave use are formulated. Based on the formulated requirements the design of the “cymbal”-type piezoelectric actuator was improved by replacing the continuous piezo-plate with two counter-plates, which reduced the nonlinearity of its deformation characteristic. Actuator designs with high vibration resistance are also proposed. 5. Theoretical and experimental research of thin dielectric resonators is carried out, designs of selective microwave devices on their basis are proposed. 6. New principle for the resonant frequencies control of the dielectric resonators by changing the angle of rotation of the resonator with respect to the wide wall of the waveguide were proposed for the first time, which made it possible to develop new designs of controlled filters and phase shifters. Precise control of the position of the resonator in this case is carried out using a stepper motor controlled by a microprocessor, which allows to eliminating such disadvantage of traditional electromechanical control as hysteresis. 7. According to the results of theoretical and experimental study of planar structures the technique of dielectric materials parameters measurements on the basis of inhomogeneous microstrip resonator is developed. 8. Based on the theory of composite materials and the results of the study of thin dielectric resonators, the Krupka’s method was modified to determine the dielectric constant and the tangent of the dielectric loss angle of thin films. The proposed method allows measuring the parameters of film materials in the thickness from tens of nanometers to several micrometers. 9. Based on the results of the study of a thin dielectric resonator a new method of investigation of the properties of anisotropic materials is proposed when using the test sample as a thin dielectric resonator. The new methods of managing the characteristics of microwave structures presented in the paper are protected by patents of Ukraine for utility models. The design of a microstrip filter with stepwise inhomogeneity was used in the development of special tools for the security service of Ukraine. The methods of research of microwave materials offered in work were tested at carrying out of scientific researches in Donetsk physical and technical institute of the O.O. Galkin of the National Academy of Sciences of Ukraine and at the Institute of General and Inorganic Chemistry of the National Academy of Sciences of Ukraine.uk
dc.description.abstractukВ роботі вирішується важлива науково-технічна проблема створення базису реалізації керованих пристроїв НВЧ на основі композитних, напівпровідникових та діелектричних структур з електричним та оптичним керуванням. Розвинено теорію композитних матеріалів, а саме отримано аналітичні вирази для розрахунку температурних залежностей діелектричних властивостей композитних матеріалів типу діелектрик-метал. Розроблено нову методику розрахунку характеристик керованих планарних структур. Запропоновано новий метод керування характеристиками напівпровідникових планарних пристроїв НВЧ за рахунок зміни конфігурації провідникових областей оптичним способом. Удосконалено конструкцію п’єзоперетворювача, що дозволило зменшити нелінійність його деформаційної характеристики. Розроблено новий принцип керування резонансними частотами діелектричних резонаторів шляхом зміни кута повороту резонатора відносно широкої стінки хвилеводу. Запропоновано нові методи дослідження властивостей діелектричних матеріалів.uk
dc.format.page43 с.uk
dc.identifier.citationТатарчук, Д. Д. Керовані композитні структури мікрохвильового діапазону : автореф. дис. … д-ра техн. наук : 05.27.01 – твердотільна електроніка / Татарчук Дмитро Дмитрович. – Київ, 2020. – 43 с.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/37507
dc.language.isoukuk
dc.publisherКПІ ім. Ігоря Сікорськогоuk
dc.publisher.placeКиївuk
dc.subjectкомпозитні матеріалиuk
dc.subjectмікротекстуровані композитиuk
dc.subjectмакротекстуровані композитиuk
dc.subjectкомпозитні структури НВЧuk
dc.subjectметоди керування параметрами електродинамічних системuk
dc.subjectкеровані пристрої НВЧuk
dc.subjectефективна діелектрична проникністьuk
dc.subjectвимірювання параметрів матеріалівuk
dc.subjectcomposite materialsuk
dc.subjectmicrotextured compositesuk
dc.subjectmacrotextured compositesuk
dc.subjectmicrowave composite structuresuk
dc.subjectcontrol methods for the parameters of electrodynamics systemsuk
dc.subjectcontrolled microwave devicesuk
dc.subjecteffective dielectric permittivityuk
dc.subjectmaterial parameters measurementsuk
dc.subject.udc621.372+621.3.018.12+621.3.018.411+621.396.69uk
dc.titleКеровані композитні структури мікрохвильового діапазонуuk
dc.typeThesisuk

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