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New Low-Voltage CMOS Differential Difference Amplifier (DDA) and an Application Example
(IEEE, 2018-08-05)The paper presents a newly designed structure of a low-voltage differential difference amplifier (DDA). The novel implementation brings significant reduction of complexity in comparison to readily available operational ... -
Frequency Corrector Using Voltage Differencing Current Conveyor Transconductance Amplifiers
(IEEE, 2019-11-29)This paper brings new type of electronically adjustable bilinear two port (allowing zero, pole and gain adjustment) applied in simple two-band frequency corrector. The bilinear two port employs single current controlled ... -
CMOS-RC Colpitts Oscillator Design Using Floating Fractional-Order Inductance Simulator
(IEEE, 2018-08-05)This paper deals with CMOS fractional-order inductance (FoL) simulator design and its utilization in 2.75th-order Colpitts oscillator providing high frequency of oscillation. The proposed floating FoL is composed of two ... -
Conversion of a MISO Filter into its Reconnectionless Reconfigurable Form with Complex Active elements
(IEEE, 2020-04-23)This paper aims to show an easy way how to design a reconnection-less reconfigurable filter based on the modification of an existing MISO filter. The proposed filter offers the same transfer functions as the structure ... -
Psychological Stress Detection in Speech Using Return-to-opening Phase Ratios in Glottis
(Kaunas University of Technology, 2015-10-12)This paper is focused on investigation of psychological stress in speech signal using shapes of normalised glottal pulses. The pulses were estimated by two algorithms: the Direct Inverse Filtering and Iterative and Adaptive ... -
Illuminance Sensing in Agriculture Applications Based on Infra-Red Short-Range Compact Transmitter Using 0.35um CMOS Active Device
(IEEE, 2020-01-29)This paper introduces a novel electronic system for simplex low-bitrate infra-red (IR) communication applications. The transmitter is implemented completely by analog building blocks, formed with the help of a recently ... -
Study of impact of voltage gain of comparator on performance of newly designed functional generator
(Elsevier, 2018-07-13)This paper focuses on analysis of impact of voltage gain of comparator on features of designed triangular and sine wave generator. Newly designed generator employs minimal number of passive and active components based on ... -
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., ... -
Integer-and Fractional-Order Integral and Derivative Two-Port Summations: Practical Design Considerations
(MDPI, 2020-01-13)This paper targets on the design and analysis of specific types of transfer functions obtained by the summing operation of integer-order and fractional-order two-port responses. Various operations provided by fractional-order, ... -
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 ... -
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- ... -
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 ... -
A CMOS Multiplied Input Differential Difference Amplifier: A New Active Device and Its Applications
(MDPI AG, 2017-01-26)This paper presents a newly developed active device, referred to as a multiplied input differential difference amplifier (MIDDA), which allows operations of summation/subtraction and multiplication of input signals. It was ... -
Dual-Mode Multifunctional Reconnection-less Reconfigurable Filter
(Kaunas University of Technology, 2020-06-29)A novel solution of a reconnection-less reconfigurable filter is being presented. The filter works in the current mode, voltage mode and mixed mode (voltage to current) offering sixteen transfer functions in total. The ... -
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 ... -
Research of the Operator's Advisory System Based on Fuzzy Logic for Pelletizing Equipment
(MDPI, 2019-11-12)Fertilizer manufacturing in the chemical industry is closely related with agricultural production. More than a half of raw materials for food products are grown by fertilizing plants. The demand of fertilizers has been ... -
Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses
(Kaunas University of Technology, 2019-10-10)This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method ... -
Novel Reconnection-less Reconfigurable Filter Design Based on Unknown Nodal Voltages Method and Its Fractional-Order Counterpart
(Kaunas University of Technology, 2019-06-26)A novel solution of reconnection-less electronically reconfigurable filter is introduced in the paper. The filter is designed based on unknown nodal voltages method (MUNV) using operational transconductance amplifiers ... -
Electronically Adjustable Emulator of the Fractional-Order Capacitor
(Kaunas University of Technology, 2019-12-12)This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I) where the passive elements in the topology ... -
Strange attractors generated by multiple-valued static memory cell with polynomial approximation of resonant tunneling diodes
(MDPI, 2018-09-12)This paper brings analysis of the multiple-valued memory system (MVMS) composed by a pair of the resonant tunneling diodes (RTD). Ampere-voltage characteristic (AVC) of both diodes is approximated in operational voltage ...
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