Browsing Centrum senzorických, informačních a komunikačních systémů by Title
Now showing items 1-20 of 32
-
About v-i Pinched Hysteresis of Some Non-Memristive Systems
(Hindawi, 2018-09-24)A special subset of two-terminal elements providing pinched hysteresis loops in the voltage-current plane with the lobe area increasing with the frequency is analysed. These devices are identified as non-memristive systems ... -
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- ... -
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 ... -
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 ... -
Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit
(The Institute of Electronics, Information and Communication Engineers (IEICE), 2015-10-10)This paper presents a simple oscillator with 45 degrees phase shift between output signals. A Modified current Differencing Unit (MCDU) was used for its design. The MCDU offers controllability of input resistances ... -
Duality of Complex Systems Built from Higher-Order Elements
(Hindawi, 2018-09-07)The duality of nonlinear systems built from higher-order two-terminal Chua’s elements and independent voltage and current sources is analyzed. Two different approaches are now being generalized for circuits with higher-order ... -
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 ... -
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 ... -
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 ... -
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 ... -
Hamilton’s principle for circuits with dissipative elements
(Hindawi, 2019-10-28)The classic form of Hamilton’s variational principle does not hold for circuits with dissipative elements. It is shown in the paper that this may not be true in the case of systems consisting of the so-called higher-order ... -
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., ... -
Lagrangian for circuits with higher-order elements
(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 ... -
Measurements of Ultra Wide Band In-vehicle channel - statistical description and TOA positioning feasibility study
(Springer, 2015-08-11)Článek popisuje výsledky měřící kampaně rádiového kanálu uvnitř osobního automobilu v pásmu 3-11 GHz. V článku je řešen efekt umístění antén a efekt přítomnosti pasažérů. Měření bylo provedeno ve frekvenční doméně a příslušné ... -
Multivariate classification of echellograms: a new perspective in Laser-Induced Breakdown Spectroscopy analysis
(Springer Nature, 2017-12-01)In this work, we proposed a new data acquisition approach that significantly improves the repetition rates of Laser-Induced Breakdown Spectroscopy (LIBS) experiments, where high-end echelle spectrometers and intensified ... -
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 ... -
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 ... -
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 ... -
New Resistorless and Electronically Tunable Realization of Dual-Output VM All-Pass Filter Using VDIBA
(Springer, 2013-01-07)In this paper, a new active element called voltage differencing inverting buffered amplifier (VDIBA) is presented. Using single VDIBA and a capacitor, a new resistorless voltage-mode (VM) first-order all-pass filter (APF) ... -
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 ...