Now showing items 63-82 of 104

  • Lagrangian for circuits with higher-order elements 

    Biolek, Zdeněk; Biolek, Dalibor; Biolková, Viera (MDPI, 2019-10-29)
    The necessary and sufficient conditions of the validity of Hamilton’s variational principle for circuits consisting of (alpha,beta) elements from Chua’s periodical table are derived. It is shown that the principle holds ...
  • 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 ...
  • Method for Volume of Irregular Shape Pellets Estimation Using 2D Imaging Measurement 

    Laucka, Andrius; Andriukaitis, Darius; Valinevicius, Algimantas; Navikas, Dangirutis; Zilys, Mindaugas; Markevicius, Vytautas; Klimenta, Dardan; Šotner, Roman; Jeřábek, Jan (MDPI, 2020-04-11)
    Growing population and decreasing amount of cultivated land conditions the increase of fertilizer demand. With the advancements of computerized equipment, more complex methods can be used for solving complex mathematical ...
  • Millimeter Wave Vehicular Channel Emulation: A Framework for Balancing Complexity and Accuracy 

    Blazek, Thomas; Zöchmann, Erich; Mecklenbräuker, Christoph (MDPI, 2018-11-16)
    We propose a general framework for the specification of a sparse representation of millimeter wave vehicular propagation channels and apply this to both synthetic data and real-world observations from channel sounding ...
  • Nanoelectronic COupled problems solutions - nanoCOPS: modelling, multirate, model order reduction, uncertainty quantification, fast fault simulation 

    ter Maten, E Jan W; Putek, Piotr; Gunther, Michael; Pulch, Roland; Tischendorf, Caren; Strohm, Christian; Schoenmaker, Wim; Meuris, Peter; De Smedt, Bart; Benner, Peter; Feng, Lihong; Banagaaya, Nicodemus; Yue, Yao; Janssen, Rick; J Dohmen, Jos; Tasić, Bratislav; Deleu, Frederik; Gillon, Renaud; Wieers, Aarnout; Brachtendorf, Hans-Georg; Bittner, Kai; Kratochvíl, Tomáš; Petržela, Jiří; Šotner, Roman; Götthans, Tomáš; Dřínovský, Jiří; Schöps, Sebastian; J Duque Guerra, David; Casper, Thorben; De Gersem, Herbert; Römer, Ulrich; Reynier, Pascal; Barroul, Patrice; Masliah, Denis; Rousseau, Benoît (2016-07-14)
    The FP7 project nanoCOPS derives new methods for simulation during development of designs of integrated products. It covers advanced simulation techniques for electromagnetics with feedback couplings to electronic circuits, ...
  • New chaotic dynamical system with a conic-shaped equilibrium located on the plane structure 

    Petržela, Jiří; Götthans, Tomáš (MDPI, 2017-09-22)
    This paper presents a new autonomous deterministic dynamical system with equilibrium degenerated into a plane-oriented hyperbolic geometrical structure. It is demonstrated via numerical analysis and laboratory experiments ...
  • New Chaotic Oscillator Derived from Class C Single Transistor-Based Amplifier 

    Petržela, Jiří (Hindawi, 2020-11-06)
    This paper describes new autonomous deterministic chaotic dynamical system having single unstable saddle-spiral fixed point. Mathematical model originates in the fundamental structure of class C amplifier. Evolution of ...
  • New Low-Voltage CMOS Differential Difference Amplifier (DDA) and an Application Example 

    Šotner, Roman; Herencsár, Norbert; Kledrowetz, Vilém; Kartci, Aslihan; Jeřábek, Jan (IEEE, 2018-08-05)
    The paper presents a newly designed structure of a low-voltage differential difference amplifier (DDA). The novel implementation brings significant reduction of complexity in comparison to readily available operational ...
  • New nonlinear active element dedicated to modeling chaotic dynamics with complex polynomial vector fields 

    Petržela, Jiří; Šotner, Roman (MDPI, 2019-09-06)
    This paper describes evolution of new active element that is able to significantly simplify the design process of lumped chaotic oscillator, especially if the concept of analog computer or state space description is adopted. ...
  • New resistorless tunable voltage-mode universal filter using single VDIBA 

    Herencsár, Norbert; Cicekoglu, Oguzhan; Šotner, Roman; Koton, Jaroslav; Vrba, Kamil (Springer, 2013-08-01)
    To increase the universality of the recently introduced voltage differencing inverting buffered amplifier (VDIBA), this letter presents a new voltage-mode (VM) multi-input–single-output (MISO) universal filter. The proposed ...
  • Novel first-order all-pass filter applications of z-copy voltage differencing current conveyor 

    Šotner, Roman; Herencsár, Norbert; Jeřábek, Jan; Vrba, Kamil; Dostál, Tomáš; Jaikla, Winai; Metin, Bilgin (NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR), 2015-08-05)
    The application of z-copy voltage differencing current conveyor (ZC-VDCC) in simple and interesting first-order all-pass sections has been studied in the present paper. The solutions presented here have presumptions for ...
  • 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, ...
  • Novel Reconnection-less Reconfigurable Filter Design Based on Unknown Nodal Voltages Method and Its Fractional-Order Counterpart 

    Langhammer, Lukáš; Šotner, Roman; Dvořák, Jan; Jeřábek, Jan; Ushakov, Peter A. (Kaunas University of Technology, 2019-06-26)
    A novel solution of reconnection-less electronically reconfigurable filter is introduced in the paper. The filter is designed based on unknown nodal voltages method (MUNV) using operational transconductance amplifiers ...
  • On the performance of electronically tunable fractional-order oscillator using grounded resonator concept 

    Šotner, Roman; Jeřábek, Jan; Polák, Ladislav; Langhammer, Lukáš; Stolařová, Hana; Petržela, Jiří; Andriukaitis, Darius; Valinevicius, Algimantas (Elsevier, 2021-02-20)
    Recent works target the design of fractional-order oscillators. However, some features of such circuits are not frequently considered in the design despite their importance in practice. This work provides an analysis of ...
  • Optimized Design of OTA-Based Gyrator Realizing Fractional-Order Inductance Simulator: A Comprehensive Analysis 

    Kubánek, David; Koton, Jaroslav; Dvořák, Jan; Herencsár, Norbert; Šotner, Roman (MDPI, 2021-01-01)
    A detailed analysis of an operational transconductance amplifier based gyrator implementing a fractional-order inductance simulator is presented. The influence of active element non-ideal properties on the gyrator operation ...
  • Out-of-vehicle time-of-arrival-based localization in ultra-wide band 

    Kukolev, Pavel; Chandra, Aniruddha; Mikulášek, Tomáš; Prokeš, Aleš (SAGE, 2016-07-19)
    The article presents out-of-vehicle channel measurement results in ultra-wide band spanning 3–11 GHz bandwidth using a vector network analyzer for localization applications. Experiments for different distances and different ...
  • Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation 

    Bag, Banibrata; Das, Akinchan; Ansari, Imran Shafique; Prokeš, Aleš; Bose, Chayanika; Chandra, Aniruddha (IEEE, 2018-05-16)
    Free-space optical (FSO) links are considered as cost-effective, non-invasive alternative to fiber optic cables for 5G cellular backhaul networking. For FSO based backhaul networks we propose an additional millimeter-wavelength ...
  • Position-Specific Statistics of 60 GHz Vehicular Channels During Overtaking 

    Zöchmann, Erich; Hofer, Markus; Lerch, Martin; Pratschner, Stefan; Bernado, Laura; Blumenstein, Jiří; Caban, Sebastian; Sangodoyin, Seun; Groll, Herbert; Zemen, Thomas; Prokeš, Aleš; Rupp, Markus; Molisch, Andreas F.; Mecklenbräuker, Christoph (IEEE, 2019-01-15)
    The time-variant vehicle-to-vehicle radio propagation channel in the frequency band from 59.75 to 60.25 GHz has been measured in an urban street in the city center of Vienna, Austria. We have measured a set of 30 ...
  • Practical Design of Fractional-Order Oscillator Employing Simple Resonator and Negative Resistor 

    Šotner, Roman; Jeřábek, Jan; Domanský, Ondřej; Herencsár, Norbert; Kartci, Aslihan; Dvořák, Jan (IEEE, 2018-11-08)
    This contribution presents straightforward design of a fractional-order oscillator employing novel simple impedance inverter (implementing differential voltage current conveyor transconductance amplifier as active element) ...
  • Practical Design of Fractional-Order Resonator for Application in the Multiphase Oscillator 

    Šotner, Roman; Jeřábek, Jan; Langhammer, Lukáš; Kartci, Aslihan; Herencsár, Norbert; Metin, Bilgin (IEEE, 2020-11-25)
    This contribution introduces a new simple electronically adjustable resonator for implementation in design of the fractional-order multiphase oscillator created with parallel connection of this resonator and negative ...