Browsing Ústav radioelektroniky by Issue Date
Now showing items 1-20 of 154
-
Electronically adjustable mixed-mode implementations of the jerk functions
(Hikari Ltd., 2009-06-22)In this paper the several structures of the third-order nonlinear oscillator with electronically adjustable parameters are presented. A brief numerical analysis including the computation of the largest Lyapunov exponent ... -
Current-Mode Circuits Based on SIMO OTA: Review and New Applications in Filters
(Hikari, 2009-11-06)The paper deals with design of low-order RC filters working in current mode (CM). As the basic building blocks, transconductors (OTA) with single input and multiple outputs are used. One-loop, two-loop and multi-loop ... -
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- ... -
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 ... -
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 ... -
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 ... -
Direct Interconnection of Ports in Modern Functional Blocks Based on Current Conveyor and CCTA for Circuit Design
(Kaunas University of Technology, 2013-11-12)The paper deals with modern functional blocks based on current conveyors and their utilization in analogue signal processing. Multi-port elements with directly interconnected ports (terminals) are the main topic of our ... -
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 ... -
Tunable Multiphase Oscillator Using Diamond Transistors with Voltage Controlled Condition of Oscillation for Amplitude Stabilization
(Kaunas University of Technology, 2014-01-13)The main aim of this paper is to present simple and low-cost solution of oscillator utilizing very simple method for automatic amplitude stabilization using adjustable current gain control. It provides satisfying total ... -
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 ... -
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 ... -
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 ... -
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), ... -
Dynamical Tangles in Third-Order Oscillator with Single Jump Function
(Hindawi, 2014-09-18)This contribution brings a deep and detailed study of the dynamical behavior associated with nonlinear oscillator described by a single third-order differential equation with scalar jump nonlinearity. The relative primitive ... -
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 ... -
Exploring and Measuring Possible Co-Existences between DVB-T2-Lite and LTE Systems in Ideal and Portable Fading Channels
(Centre of Applied Sciences and Technological Development of the National Autonomous University of Mexico, 2015-02-02)From the point of technical innovations the development and standardization of Digital Video Broadcasting - 2nd Generation Terrestrial (DVB-T2) and Long-Term Evolution (LTE) systems are definitely the most significant ... -
In-vehicle channel sounding in the 5.8-GHz band
(Springer, 2015-03-10)The article reports vehicular channel measurements in the frequency band of 5.8 GHz for IEEE 802.11p standard. Experiments for both intra-vehicle and out-of-vehicle environments were carried out. It was observed that the ... -
Heterogeneous Networks for Smart Metering – Power Line and Radio Communication
(Kaunas University of Technology, 2015-04-15)In this paper, the radio wireless communication and the narrowband power line communication are analysed, simulated and experimentally verified for Smart Metering systems. This is followed by the proposal of a heterogeneous ... -
Study of Coexistence between Indoor LTE Femtocell and Outdoor-to-Indoor DVB-T2-Lite Reception in a Shared Frequency Band
(Springer, 2015-04-22)Nowadays, the demand for high-quality multimedia services (video, audio, image, and data) is rapidly increasing. The Digital Video Broadcasting - terrestrial (DVB-T) standard, its second-generation version (DVB-T2), and ... -
Reconnection-less OTA-based Biquad Filter with Electronically Reconfigurable Transfers
(Kaunas University of Technology, 2015-06-14)This paper deals with operational transconductance amplifiers (OTAs) -based active voltage-mode biquad filter with electronically reconfigurable transfer functions. Due to utilization of the very favourable active devices, ...