Centrum senzorických, informačních a komunikačních systémů
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Second-order Simple Multiphase Oscillator Using Z-Copy Controlled-Gain Voltage Differencing Current Conveyor
(Kaunas University of Technology, 2014-11-19)Interesting type of the second-order electronically controllable multiphase oscillator is introduced in this paper. Modified voltage differencing current conveyor, so-called z-copy controlled gain voltage differencing ... -
Analysis of Dynamic Performance of Half-Wave Rectifiers and its Improvements
(Kaunas University of Technology, 2014-02-03)This paper deals with the analysis of dynamic behaviour of half-wave rectifiers and compares circuit solutions using standard operational amplifiers and current conveyors as active elements. The voltage and current sourcing ... -
Novel Oscillator Based on Voltage and Current-Gain Adjusting Used for Control of Oscillation Frequency and Oscillation Condition
(Kaunas University of Technology, 2013-06-13)The paper deals with novel controllable oscillator where two types of electronic control are used. Proposed second-order circuit contains current follower, adjustable current amplifier, adjustable voltage amplifier, two ... -
Application of Stochastic Differential-Algebraic Equations in Hybrid MTL Systems Analysis
(Kaunas University of Technology, 2014-05-01)The paper deals with the application of stochastic differential-algebraic equations (SDAE) in the field of the time-domain simulation of hybrid (lumped/distributed) systems with randomly varying parameters. A core of the ... -
Grounded Voltage Controlled Positive Resistor with Ultra Low Power Consumption
(Kaunas University of Technology, 2014-09-12)In this work, a new CMOS based grounded voltage controlled positive resistor (GVCPR) with one control voltage is proposed. The proposed GVCPR employs only five CMOS transistors, one operated in triode region and others ... -
New Compact VM Four-Phase Oscillator Employing Only Single Z-Copy VDTA And All Grounded Passive Elements
(Kaunas University of Technology, 2013-12-16)In this paper, a new compact voltage-mode four-phase oscillator employing single z-copy voltage differencing transconductance amplifier (ZC-VDTA) and only grounded passive elements is introduced. The use of only grounded ... -
Z-Copy Controlled-Gain Voltage Differencing Current Conveyor: Advanced Possibilities in Direct Electronic Control of First-Order Filter
(Kaunas University of Technology, 2014-06-13)A modified version of voltage differencing current conveyor (VDCC) and its performance in detail is presented in this paper. Modified VDCC, so-called z-copy controlled gain voltage differencing current conveyor (ZC-CG-VDCC), ... -
Voltage-Mode CFTA-C Third-Order Elliptic Low-Pass Filter Design and Optimization Using Signal Flow Graph Approach
(Kaunas University of Technology, 2015-04-15)In this work, two active only grounded-C equivalents of third-order voltage-mode (VM) elliptic low-pass (LP) LC ladder prototype are proposed. As active building blocks (ABBs) the recently introduced current follower ... -
Empirical evidence of ideal filter approximation: pheriperal and selected EU countries application
(Prague University of Economics and Business, 2015-06-24)We compare three filters commonly used for business cycle analysis: the Baxter-King, the Christiano-Fitzgerald and the Hamming window filter. Empirical contribution of the paper is numerical evaluation of the approximation ... -
New Current-Mode Class 1 Frequency-Agile Filter for Multi Protocol GPS Application
(Kaunas University of Technology, 2015-10-12)Recently, due to their cost, accuracy, and integrability of conventional current-mode (CM) on-chip integrated filters working in radio frequency region, frequency-agile filters (FAFs) have started taking great interest in ... -
Towards an Optimal Interest Point Detector for Measurements in Ultrasound Images
(Versita Open, 2013-12-16)This paper focuses on the comparison of different interest point detectors and their utilization for measurements in ultrasound (US) images. Certain medical examinations are based on speckle tracking which strongly relies ... -
New double current controlled CFA (DCC-CFA) based voltage-mode oscillator with independent electronic control of oscillation condition and frequency
(FEI STU, 2013-03-27)In this paper, a new electronically tunable quadrature oscillator (ETQO) based on two modified versions of current feedback amplifiers (CFAs), the so called double current controlled CFA (DCC-CFAs) is presented. The frequency ... -
Higher-Order Hamiltonian for Circuits with (alpha,beta) Elements
(MDPI AG, 2020-04-05)The paper studies the construction of the Hamiltonian for circuits built from the (alpha,beta) elements of Chua’s periodic table. It starts from the Lagrange function, whose existence is limited to sigma-circuits, i.e., ... -
Fully differential first-order allpass filters using a DDCC
(NISCAIR-CSIR, 2014-08-01)Two voltage-mode high input impedance differential input-differential output first-order allpass filters based on differential difference current conveyor (DDCC) are presented. Each of the proposed circuit uses one plus-type ... -
P1-approximation for radiative transfer: application to SF6 + Cu arc plasmas
(De Gruyter Open, 2014-12-01)The objective of the paper consists of a theoretical prediction of radiative heat transfer in arc plasmas of SF6 (sulphur hexafluoride) with various admixtures of copper vapours. As a mathematical tool the P1-approximation ... -
An electronically tunable current-mode quadrature oscillator using PCAs
(Taylor & Francis, 2012-04-10)The paper presents a new realization of active RC sinusoidal oscillator with electronically tunable condition and frequency of oscillation. As compared to the class of three resistors, two capacitors (3R-2C) based canonic ... -
Three-input-one-output current-mode universal biquadratic filter using one differential difference current conveyor
(NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR), 2014-08-01)A current-mode universal biquadratic filter is presented. The architecture has three input terminals, one output terminal using one differential difference current conveyor (DDCC), two grounded capacitors and two resistors. ... -
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- ... -
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 ... -
Voltammetry as a Tool for Characterization of CdTe Quantum Dots
(MDPI, 2013-06-27)Electrochemical detection of quantum dots (QDs) has already been used in numerous applications. However, QDs have not been well characterized using voltammetry, with respect to their characterization and quantification. ...
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