Ústav radioelektroniky
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Poslední příspěvky
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High Efficiency Classes of RF Amplifiers
(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
(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, ... -
Řídicí modul pro poziční rotační elektromechanický systém
(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 ... -
Coarse Time Synchronization Utilizing Symmetric Properties of Zadoff-Chu Sequences
(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 ... -
Comparative Study of Discrete Component Realizations of Fractional-Order Capacitor and Inductor Active Emulators
(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
(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
(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, ... -
Resistor-less Single-purpose or Reconfigurable Biquads Utilizing Single Z-Copy Controlled-Gain Voltage Differencing Current Conveyor
(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
(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 ... -
Resistorless Electronically Tunable Grounded Inductance Simulator Design
(IEEE, 2017-07-05)A new realization of grounded lossless positive inductance simulator (PIS) using simple inverting voltage buffer and unity-gain current follower/inverter (CF±) is reported. Considering the input intrinsic resistance of CF± ... -
Compact MOS-RC Voltage-Mode Fractional-Order Oscillator Design
(IEEE, 2017-09-04)A new voltage-mode fractional-order oscillator, employing in total 12 Metal-Oxide-Semiconductor (MOS) transistors, is introduced in this paper. The proposed circuit is composed of two operational transconductance amplifiers, ... -
Voltage Gain-Controlled Third-Generation Current Conveyor and its All-Pass Filter Verification
(IEEE, 2017-09-04)The paper presents a new active building block (ABB) called minus-type voltage gain-controlled third-generation current conveyor (VGC-CCIII) in which the voltage gain between Y to X terminal can be controlled. The usefulness ... -
Fractional-Order Oscillator Design Using Unity-Gain Voltage Buffers and OTAs
(IEEE, 2017-08-06)In this study, a new voltage-mode fractional-order oscillator using two unity-gain voltage buffers, two operational transconductance amplifiers, one resistor, and two capacitors is presented. The design procedure of ... -
New resistorless tunable voltage-mode universal filter using single VDIBA
(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 ... -
Simple Oscillator with Enlarged Tunability Range Based on ECCII and VGA Utilizing Commercially Available Analog Multiplier
(De Gruyter, 2016-04-07)This work presents an example of implementation of electronically controllable features to an originally unsuitable circuit structure of oscillator. Basic structure does not allow any electronic control and has mutually ... -
TISO Adjustable Filter with Controllable Controlled-Gain Voltage Differencing Current Conveyor
(Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 2014-06-02)The main aim of this paper is to present solution of triple-input single-output (TISO) filter with independently adjustable pole frequency, quality factor, bandwidth and also gain. Filter is universal, operates in current ... -
Digitally Controllable Current Amplifier and Current Conveyors in Practical Application of Controllable Frequency Filter
(Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 2016-09-04)This paper presents the simulations results in comparison with the measured results of the practical realization of the multifunctional second order frequency filter with a Digitally Controlled Current Amplifier (DACA) and ... -
Novel first-order all-pass filter applications of z-copy voltage differencing current conveyor
(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 ... -
An Additional Approach to Model Current Followers and Amplifiers with Electronically Controllable Parameters from Commercially Available ICs
(Versita, 2012-11-22)Several behavioral models of current active elements for experimental purposes are introduced in this paper. These models are based on commercially available devices. They are suitable for experimental tests of current- ... -
High input impedance voltage-mode universal filter and its modification as quadrature oscillator using VDDDAs
(NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR), 2017-05-23)The second order universal voltage-mode filter using voltage differencing differential difference amplifiers (VDDDAs) has been proposed. It has high input impedance voltage-mode biquad filter with orthogonal tune of natural ...
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