• Fully-Differential Universal Frequency Filter with Dual-Parameter Control of the Pole Frequency and Quality Factor 

  Langhammer, Lukáš; Šotner, Roman; Dvořák, Jan; Jeřábek, Jan; Zapletal, Miroslav (IEEE, 2018-05-30)

  The paper presents a proposal of modified 2ndorder fully-differential universal frequency filter. Both the pole frequency and quality factor (controlled without disturbing each other) of the filter can be controlled by two ...

• High Efficiency Classes of RF Amplifiers 

  Herceg, Erik; Urbanec, Tomáš (International Science and Engineering Society, 2018-02-28)

  This article is dealing with high efficiency RF amplifiers in modern classes F, E and J. The first part is focused on basic function, main parameters and the output matching topologies of the mentioned classes. Output ...

• A Novel Pseudo-Differential Integer/Fractional-Order Voltage-Mode All-Pass Filter 

  Herencsár, Norbert; Šotner, Roman; Kartci, Aslihan; Vrba, Kamil (IEEE, 2018-05-08)

  The paper presents the first- (integer) and fractional-order case studies of a novel pseudo-differential (P-D) voltage-mode all-pass filter (APF) employing a single differential voltage current conveyor (DVCC), one resistor, ...

• Availability of Suitable Raw Materials Determining the Prospect for Energy Storage Systems Based on Redox Flow Batteries 

  Vanýsek, Petr; Novák, Vítězslav (Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice, 2018-04-30)

  Successful large-scale deployment and manufacturing of newly designed products depends on the availability of raw materials and therefore even fundamental research on electrochemical energy sources cannot ignore the need ...

• Intensity-Based Nonoverlapping Area Registration Supporting “Drop-Outs” in Terms of Model-Based Radiostereometric Analysis 

  Klíma, Ondřej; Bařina, David; Chromý, Adam; Španěl, Michal; Zemčík, Pavel (Hindawi, 2018-03-28)

  A model-based radiostereometric analysis (MBRSA) is a method for precise measurement of prosthesis migration, which does not require marking the implant with tantalum beads. Instead, the prosthesis pose is typically recovered ...

• Evaluation of Harmonics Impact on Digital Relays 

  Wannous, Kinan; Toman, Petr (MDPI, 2018-04-11)

  This paper presents the concept of the impact of harmonic distortion on a digital protection relay. The aim is to verify and determine the reasons of a mal-trip or failure to trip the protection relays; the suggested ...

• Řídicí modul pro poziční rotační elektromechanický systém 

  Krolák, David (International Science and Engineering Society, 2018-02-28)

  Tento článek prezentuje jedno z možných jednoduchých řešení flexibilního řídicího modulu pro řízení pozičního rotačního elektromechanického systému pomocí osobního počítače (PC). Rotační elektromechanický systém se skládá ...

• Photoelectric Properties of Solar Cells Based on Perovskites 

  Novák, Vítězslav; Vanýsek, Petr; Weiter, Martin (Czech Technical University in Prague, 2018-03-13)

  Here we discuss materials and construction of particular solar cells that could be possible replacement for the current silicon-based photovoltaic cells, and methods of studying their performance. Solar cells based on the ...

• Coarse Time Synchronization Utilizing Symmetric Properties of Zadoff-Chu Sequences 

  Blumenstein, Jiří; Bobula, Marek (IEEE, 2018-02-19)

  We demonstrate a novel metric for coarse time synchronization suitable for wireless communication. The novel metric benefits from a symmetry of Zadoff-Chu sequences in the time domain. The time domain symmetry is obtained ...

• Stříbrná sága: dvě největší bubliny 

  Novotný, Radovan (Fincentrum, 2014-04-02)

  Formy využití stříbra, ceny stříbra vs. inflace, "stříbrné" bubliny,

• Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators 

  Tsirimokou, Georgia; Kartci, Aslihan; Koton, Jaroslav; Herencsár, Norbert; Psychalinos, Costas (World Scientific, 2018-02-06)

  Due to the absence of commercially available fractional-order capacitors and inductors, their implementation can be performed using fractional-order differentiators and integrators, respectively, combined with a ...

• Reconfigurable Fractional-Order Filter with Electronically Controllable Slope of Attenuation, Pole Frequency and Type of Approximation 

  Jeřábek, Jan; Šotner, Roman; Dvořák, Jan; Polák, Josef; Kubánek, David; Herencsár, Norbert; Koton, Jaroslav (World Scientific Publishing, 2017-03-09)

  This paper presents design of electronically reconfigurable fractional-order filter that is able to be configured to operate as fractional-order low-pass filter (FLPF) or fractional-order high-pass filter (FHPF). Its slope ...

• Series-, Parallel-, and Inter-Connection of Solid-State Arbitrary Fractional-Order Capacitors: Theoretical Study and Experimental Verification 

  Kartci, Aslihan; Agambayev, Agamyrat; Herencsár, Norbert; Salama, Khaled Nabil (IEEE, 2018-02-27)

  In the paper, general analytical formulas are introduced for the determination of equivalent impedance, magnitude, and phase, i.e. order, for n arbitrary fractional-order capacitors (FoCs) connected in series, parallel, ...

• Fractal Analysis of the 3-D surface Topography of GaAs Solar Cells 

  Talu, Stefan; Papež, Nikola; Sobola, Dinara; Tofel, Pavel (DEStech Publications, Inc., 2018-02-11)

  This article is devoted to study of Atomic Force Microscopy (AFM) images of solar cells based on gallium arsenide (GaAs). Mathematical processing of data involves obtaining additional information about topography. The ...

• Resistor-less Single-purpose or Reconfigurable Biquads Utilizing Single Z-Copy Controlled-Gain Voltage Differencing Current Conveyor 

  Jeřábek, Jan; Šotner, Roman; Polák, Josef; Langhammer, Lukáš; Herencsár, Norbert; Prokop, Roman; Vrba, Kamil (2017-03-31)

  Presented work deals with applications of the single Z-Copy Controlled-Gain Voltage Differencing Current Conveyor (ZC-CG-VDCC) in single purpose and multifunctional biquadratic voltage- and current-mode active resistor-less ...

• Loop-to-Loop Pulsed Electromagnetic Signal Transfer Across a Thin Metal Screen With Drude-Type Dispersive Behavior 

  Štumpf, Martin (IEEE Press, 2017-10-17)

  A full analytic time-domain analysis is presented for a canonical problem of electromagnetic interference related to the operation of integrated-circuit devices at optical frequencies, where metal screens and substrates ...

• Detection of selected heavy metals and micronutrients in edible insect and their dependency on the feed using XRF spectrometry 

  Mlček, Jiří; Adámek, Martin; Adámková, Anna; Borkovcová, Marie; Bednářová, Martina; Skácel, Josef (HACCP Consulting, 2017-12-18)

  Edible insect can be a valuable source of nutrients, but also a potential source of heavy metals. Quick detection of over-limit heavy metals concentration could be a key to processing and quick distribution ...

• Simulink Generated Control Algorithm for Nine-phase PMS Motor 

  Kozovský, Matúš; Blaha, Petr (IEEE, 2017-11-24)

  This paper deals with the nine-phase motor control algorithm development, mainly with its implementation in target hardware using MATLAB Simulink. This environment allows control algorithm design using model based approach ...

• Electromagnetic compatibility of PLC adapters for in-home/domestic networks 

  Orgoň, Miloš; Fujdiak, Radek (Faculty of Electrical Engineering and Information Technology of the Slovak University of Technology, 2018-02-19)

  The use of programable logic controllers (PLC) technology in electrical networks 230 V causes electromagnetic radiation that interferes with other electrical equipment connected to the network. Therefore, this article ...

• A 3D Scan Model and Thermal Image Data Fusion Algorithms for 3D Thermography in Medicine 

  Chromý, Adam; Klíma, Ondřej (NEUVEDEN, 2017-11-08)

  Objectives. At present, medical thermal imaging is still considered a mere qualitative tool enabling us to distinguish between but lacking the ability to quantify the physiological and nonphysiological states of the body. ...

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