Browsing Ústav radioelektroniky by Title
Now showing items 1-20 of 196
-
60-GHz Millimeter-Wave Propagation Inside Bus: Measurement, Modeling, Simulation, and Performance Analysis
(IEEE, 2019-06-24)Millimeter-wave (mmWave) transmission over the unlicensed 60-GHz spectrum is a potential solution to realize high-speed internet access, even inside mass transit vehicles. The solution involves communication between users ... -
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 ... -
Access to credit of SMES in the Czech republic during the financial crisis and in the post-crisis period
(Mendelu, 2015-09-03)We investigate the impact of the financial crisis on the access of small and medium-sized enterprises in the Czech Republic to external financing. We apply the non-parametric kernel density estimation on a firm-level measure ... -
Accurate constant phase elements dedicated for audio signal processing
(MDPI, 2019-11-15)This review paper introduces real-valued two-terminal fully passive RC ladder structures of the so-called constant phase elements (CPE). These lumped electronic circuits can be understood as two-terminal elements described ... -
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- ... -
Adjacent Channel Interference Cancellation in FDM Transmissions
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2020-12-30)Interference between users in adjacent channels negatively affects throughput of mobile networks. In this paper we aim at cancellation of interference caused by a nonlinear power amplifier in a generalized orthogonal ... -
All Pinched Hysteresis Loops Generated by (alpha, beta) Elements: in What Coordinates They May be Observable
(IEEE, 2020-12-01)Two existing theorems for studying pinched hysteresis loops generated by nonlinear higher-order elements from Chua's table are reformulated, namely the generalized homothety theorem and the associated Loop Location Rule, ... -
Analog Implementation of Fractional-Order Elements and Their Applications
(2019-06-24)With advancements in the theory of fractional calculus and also with widespread engineering application of fractional-order systems, analog implementation of fractional-order integrators and differentiators have received ... -
Analog Implementation of Fractional-Order Elements and Their Applications
(2019-06-24)With advancements in the theory of fractional calculus and also with widespread engineering application of fractional-order systems, analog implementation of fractional-order integrators and differentiators have received ... -
Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals
(IEEE, 2021-06-25)This work deals with the design of a simple double output voltage phase detector, using a specific type of analog multiplier, and its application in a frequency demodulator. The design of active parts was performed in ... -
Analogue Implementation of a Fractional-Order PI^{\lambda} Controller for DC Motor Speed Control
(IEEE, 2019-06-12)In this paper, an approach to design a fractional-order integral operator s(lambda) where -1 < lambda <0, using an analogue technique, is presented. The integrator with a constant phase angle -80.1 degree (i.e. order lambda ... -
Analysis and Synthesis of Chaotic Circuits Using Memristor Properties
(FEI STU, 2014-06-01)This paper provides an innovative practical realization of a memristor based chaotic circuit. The first part discusses the mathematical analysis of the proposed system, including calculation of an eigenvalues, bifurcation ... -
Analysis and Verification of Identical-Order Mixed Matrix Fractional-Order Capacitor Networks
(IEEE, 2018-07-02)In the open literature while capacitors are introduced with -90 degrees phase angle, here we described our fabricated polymer composite, mixed matrix, as a fractional-order capacitor (FoC). The effect on phase and ... -
Analysis of Closing-To-Opening Phase Ratio in Top-To-Bottom Glottal Pulse Segmentation for Psychological Stress Detection
(Kaunas University of Technology, 2016-10-10)This paper is focused on investigating the differences in glottal pulses estimated by two algorithms; Direct Inverse Filtering (DIF) and Iterative and Adaptive Inverse Filtering (IAIF) for normal and stressed speech. ... -
Analysis of Intensively Blasted Electric Arc Burning in the Arc Heater's Anode Channel
(Czech Technical University in Prague, 2016-10-31)The paper deals with the description of the intensively blasted electric arc burning in Ar in the anode channel of the arc heater operated under various conditions. Directly measured experimental data (current, voltage, ... -
Anisotropic Conductivity of Rat Head Phantom and its Influence on Electroencephalogram Source Localization
(IEEE, 2022-01-20)In this paper we deal with a simplified anisotropic rat head phantom development and the investigation of the influence of the anisotropic white matter on electroencephalogram source localization. The proposed phantom is ... -
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 ... -
Applications of novel behavioral implementation of a controllable generalized current conveyor
(IEEE, 2018-04-20)This contribution presents a novel modification of a behavioral model for a generalized current conveyor of second generation based on commercially available active devices. This model is suitable for preliminary tests of ... -
Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator
(IEEE, 2023-05-29)A special electronically tunable multiphase oscillator with arbitrarily and continuously adjustable phase shifts is introduced. Our design assumes to set the phase around the asymptotical limit of 180.. These features ... -
Behavioral model for emulation of ZC-CG-VDCC
(The Institute of Electronics, Information and Communication Engineers (IEICE), 2016-01-29)This paper presents a proposal and an experimental analysis of behavioral emulator of so-called z-copy controlled-gain voltage differencing current conveyor (ZC-CG-VDCC) based on commercially available devices. Most of ...