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Doctoral Thesis
Author of thesis: Ing. Ondřej Domanský
Acad. year: 2025/2026
Supervisor: prof. Ing. Roman Šotner, Ph.D.
Reviewers: doc. Ing. Jiří Vávra, Ph.D., Assoc. Prof. Umut Engin AYTEN
This dissertation is organized into five consequential sections (excluding the bibliography). The initial section delves into the introduction of the implementation in the proposed structure of the element with a constant phase response (Constant Phase Element, henceforth referred to as CPE), based on a series-parallel configuration of resistors and capacitors. This is followed by analyses of selected configurations for the implementation of the proposed CPE element and a possible comparison with other configurations of a similar type in the State of the Art chapter. The objectives of the dissertation are described in four points in the Objectives of Work. The success in fulfilling these objectives is then discussed in the Concluding Discussion, along with further possibilities of the implementation of CPE elements and their applications in linear circuits. The second part is the core of this dissertation, consisting of published conference papers and articles in impact journals. Noteworthy are two impact journals for publication in CSSP (Circuits, Systems, and Signal Processing) on the topic of practical design of RC approximants and their application in CMOS conveyors. The second paper, which had the most significant impact on the dissertation, was published in the impactful journal IEEE Access and consists of issues related to electronically controllable and adjustable fractional filters. Both those proposed impact paper applications offer electronic control over the time constant, magnitude values, and reconfiguration. The reader will be introduced to new possibilities for the application of CPE elements. For the purpose of verification of the presented concepts, selected simulations were conducted in the PSpice program for some articles, as well as experimental tests with fabricated chips in the lab and with commercially available components.
Constant phase element (CPE), fractional-order dynamics, proportional integrational and differential controller (PID, also PID), voltage differencing current conveyor, frequency dependent elements, integer and non-integer integrations and derivations
Date of defence
17.09.2025
Result of the defence
Defended (thesis was successfully defended)
Process of defence
Doktorand předatavil hlavní výsledky své prtáce podle vytyčených cílů. Zmínil především nové přístupy návrhu obvodů frakčního řádu a přístupy navržené pro návrh CPE a aplikaci korekčních prvků přidaných k návrhu, stejně jako obvod PID navržený s aktivní složkou VDCC jako aplikací. Po zodpovězení otázek i některých připomínek oponentů se komise jednomyslně usnesla na závěru, že Ing. Ondřej Domanský splnil cíle dizertační práce a dosaženými výsledky a publikační činností splnil podmínky k udělení akademického titulu doktor.
Language of thesis
English
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Radio Electronics
Study programme
Electronics and Communication Technologies (DKC-EKT)
Composition of Committee
prof. Ing. Aleš Prokeš, Ph.D. (předseda) prof. Ing. Lubomír Brančík, CSc. (člen) doc. Ing. Ladislav Polák, Ph.D. (člen) prof. Ing. Milan Štork, CSc. (člen) doc. Dr. Ing. Pavel Horský (člen) Assoc. Prof. Umut E. Ayten (člen) doc. Ing. Jiří Vávra, Ph.D. (člen)
Supervisor’s reportprof. Ing. Roman Šotner, Ph.D.
Reviewer’s reportdoc. Ing. Jiří Vávra, Ph.D.
Reviewer’s reportAssoc. Prof. Umut Engin AYTEN
Responsibility: Mgr. et Mgr. Hana Odstrčilová