Roman Sotner

According to our database, Roman Sotner authored at least 100 papers between 2009 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2024

Gain-Controllable Transadmittance-Mode First-Order Allpass Filters with Electronic Tune Using Single Active Element.

Chaiya Tanaphatsiri, Fabian Khateb, Roman Sotner, Winai Jaikla

J. Circuits Syst. Comput., February, 2024

2023

Simple Diode-Less Active RMS Detector Using Special Analog Multipliers.

Roman Sotner, Ladislav Polak, Jan Jerabek, Jiri Petrzela

IEEE Trans. Circuits Syst. II Express Briefs, November, 2023

Various-Order Low-Pass Filter with the Electronic Change of Its Approximation.

Lukas Langhammer, Roman Sotner, Radek Theumer

Sensors, October, 2023

Arbitrarily Tunable Phase Shift in Low-Frequency Multiphase Oscillator.

Roman Sotner, Ladislav Polak, Jan Jerabek, Winai Jaikla

IEEE Trans. Instrum. Meas., 2023

Reconnection-Less Reconfigurable Filter Based on Method of Unknown Nodal Voltages Using 4×4 Matrix.

Lukas Langhammer, Roman Sotner

IEEE Access, 2023

Single Frequency Networks for DVB-T2: Analysis of Real Case Scenarios in Czech Republic.

Ladislav Polak, Vojtech Bárta, Jan Kufa, Marek Simka, Radim Zedka, Roman Sotner, Arvind Dhaka

Proceedings of the 33rd International Conference Radioelektronika, 2023

2022

Electronic Tunability and Cancellation of Serial Losses in Wire Coils.

Roman Sotner, Jan Jerabek, Ladislav Polak, Radek Theumer, Lukas Langhammer

Sensors, 2022

Practical Aspects of Impedance Measurement using Operational Amplifier and Oscilloscope.

Marek Svoboda, Roman Sotner, Ladislav Polak

Proceedings of the 32nd International Conference Radioelektronika, 2022

On the Interference between LoRa and Bluetooth in the 2.4 GHz Unlicensed Band.

Ladislav Polak, Filip Paul, Marek Simka, Radim Zedka, Jan Kufa, Roman Sotner

Proceedings of the 32nd International Conference Radioelektronika, 2022

2021

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance.

Winai Jaikla, Unchittha Buakhong, Surapong Siripongdee, Fabian Khateb, Roman Sotner, Phamorn Silapan, Peerawut Suwanjan, Amornchai Chaichana

Sensors, 2021

Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals.

Roman Sotner, Ladislav Polak, Jan Jerabek, Jiri Petrzela, Vilem Kledrowetz

IEEE Access, 2021

A Single Parameter Voltage Adjustable Immittance Topology for Integer- and Fractional-Order Design Using Modular Active CMOS Devices.

Roman Sotner, Jan Jerabek, Ladislav Polak, Roman Prokop, Winai Jaikla

IEEE Access, 2021

Reconnection-less Reconfigurable Fractional-Order Current-Mode Integrator Design With Simple Control.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Jan Jerabek, Darius Andriukaitis

IEEE Access, 2021

Electronically Reconfigurable and Tunable Fractional-Order Filter Using Resonator Concept and Feedforward Path for Low-Frequency Tone Signalization.

Ondrej Domansky, Roman Sotner, Lukas Langhammer, Ladislav Polak

IEEE Access, 2021

DVB-T2/T2-Lite using MISO Principle for Portable and Mobile Transmission Scenarios.

Ladislav Polak, Roman Sotner, Jan Kufa, Tomas Kratochvil

Proceedings of the 44th International Conference on Telecommunications and Signal Processing, 2021

Voltage Tunable Building Blocks Using Compact Active Device in Design of Filtering Applications.

Roman Sotner, Jiri Petrzela, Lukas Langhammer

Proceedings of the 31st International Conference Radioelektronika, 2021

On the Performance of DVB-T2 MISO System: Special Fixed Transmission Scenarios.

Ladislav Polak, Jan Kufa, Roman Sotner, Tomas Kratochvil

Proceedings of the 31st International Conference Radioelektronika, 2021

2020

Design of Signal Generators Using Active Elements Developed in I3T25 CMOS Technology Single IC Package for Illuminance to Frequency Conversion.

Roman Sotner, Jan Jerabek, Ladislav Polak, Vilem Kledrowetz, Roman Prokop

Sensors, 2020

The CMOS Highly Linear Current Amplifier with Current Controlled Gain for Sensor Measurement Applications.

Roman Prokop, Roman Sotner, Vilem Kledrowetz

Sensors, 2020

Illuminance Sensing in Agriculture Applications Based on Infra-Red Short-Range Compact Transmitter Using 0.35 µm CMOS Active Device.

Roman Sotner, Jan Jerabek, Ladislav Polak, Jiri Petrzela, Winai Jaikla, Sunti Tuntrakool

IEEE Access, 2020

Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique.

Roman Sotner, Jan Jerabek, Ladislav Polak, Jiri Petrzela

IEEE Access, 2020

Binary Memory Implemented by Using Variable Gain Amplifiers With Multipliers.

Jiri Petrzela, Roman Sotner

IEEE Access, 2020

Design of Building Blocks for Fractional-Order Applications with Single and Compact Active Device.

Roman Sotner, Jan Jerabek, Lukas Langhammer, Jaroslav Koton, Josef Polak, Darius Andriukaitis, Algimantas Valinevicius

Proceedings of the 43rd International Conference on Telecommunications and Signal Processing, 2020

Design of Electronically Adjustable Fractional Order Immittances Using Single Active Device.

Roman Sotner, Jan Jerabek, Lukas Langhammer, Jaroslav Koton, Darius Andriukaitis, Audrius Merfeldas

Proceedings of the 43rd International Conference on Telecommunications and Signal Processing, 2020

Analysis of OTA-Based Gyrator Implementing Fractional-Order Inductor.

David Kubánek, Jaroslav Koton, Jan Dvorak, Norbert Herencsar, Roman Sotner

Proceedings of the 43rd International Conference on Telecommunications and Signal Processing, 2020

Comparison of Simple Design Methods for Voltage Controllable Resistance.

Roman Sotner, Ondrej Domansky, Lukas Langhammer, Jiri Petrzela

Proceedings of the 30th International Conference Radioelektronika, 2020

Conversion of a MISO Filter into its Reconnection-less Reconfigurable Form with Complex Active elements.

Lukas Langhammer, Roman Sotner

Proceedings of the 30th International Conference Radioelektronika, 2020

Third-Order Reconnection-Less Electronically Reconfigurable Multifunctional Filter.

Lukas Langhammer, Roman Sotner

Proceedings of the IEEE International Symposium on Circuits and Systems, 2020

Practical Design of Fractional-Order Resonator for Application in the Multiphase Oscillator.

Roman Sotner, Jan Jerabek, Lukas Langhammer, Aslihan Kartci, Norbert Herencsar, Bilgin Metin

Proceedings of the 27th IEEE International Conference on Electronics, Circuits and Systems, 2020

Tunable Fractional-Order Capacitance Multiplier Using Current Gain Adjustment.

Roman Sotner, Jan Jerabek, Lukas Langhammer

Proceedings of the 27th IEEE International Conference on Electronics, Circuits and Systems, 2020

Current-Mode Fractional-Order Electronically Controllable Integrator Design.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Ondrej Sladok, Jan Jerabek, Panagiotis Bertsias

Proceedings of the 27th IEEE International Conference on Electronics, Circuits and Systems, 2020

2019

Research of the Operator's Advisory System Based on Fuzzy Logic for Pelletizing Equipment.

Darius Andriukaitis, Andrius Laucka, Algimantas Valinevicius, Mindaugas Zilys, Vytautas Markevicius, Dangirutis Navikas, Roman Sotner, Jiri Petrzela, Jan Jerabek, Norbert Herencsar, Dardan Klimenta

Symmetry, 2019

Electronically reconfigurable two-path fractional-order PI/D controller employing constant phase blocks based on bilinear segments using CMOS modified current differencing unit.

Roman Sotner, Jan Jerabek, Aslihan Kartci, Ondrej Domansky, Norbert Herencsar, Vilem Kledrowetz, Baris Baykant Alagöz, Celaleddin Yeroglu

Microelectron. J., 2019

Experimental Verification of Pseudo-Differential Electronically Controllable Multifunction Filter Using Modified Current Differencing/Summing Units.

Jan Jerabek, Jan Dvorak, Roman Sotner, Norbert Herencsar, Jaroslav Koton

J. Circuits Syst. Comput., 2019

New Nonlinear Active Element Dedicated to Modeling Chaotic Dynamics with Complex Polynomial Vector Fields.

Jiri Petrzela, Roman Sotner

Entropy, 2019

Practical Design of RC Approximants of Constant Phase Elements and Their Implementation in Fractional-Order PID Regulators Using CMOS Voltage Differencing Current Conveyors.

Ondrej Domansky, Roman Sotner, Lukas Langhammer, Jan Jerabek, Costas Psychalinos, Georgia Tsirimokou

Circuits Syst. Signal Process., 2019

Design of Fractional-Order Integrator Controlled by Single Voltage Gain.

Roman Sotner, Jiri Petrzela, Jan Jerabek, Norbert Herencsar, Darius Andriukaitis

Proceedings of the 42nd International Conference on Telecommunications and Signal Processing, 2019

Frequency Tunability of Fractance Device based on OTA-C.

Pipat Prommee, Natapong Wongprommoon, Roman Sotner

Proceedings of the 42nd International Conference on Telecommunications and Signal Processing, 2019

Comparative Study of Op-Amp-based Integrators Suitable for Fractional -Order Controller Design.

Norbert Herencsar, Aslihan Kartci, Hacer Atar Yildiz, Roman Sotner, Jan Dvorak, David Kubánek, Jan Jerabek, Jaroslav Koton

Proceedings of the 42nd International Conference on Telecommunications and Signal Processing, 2019

Fractional-Order Asymptotical Phase Shifter with Flat Magnitude Response.

Roman Sotner, Lukas Langhammer, Jan Jerabek, Tomás Dostál

Proceedings of the 17th IEEE International New Circuits and Systems Conference, 2019

Novel Design Solution of Reconnection-less Electronically Reconfigurable Filter.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Tomás Dostál

Proceedings of the 26th International Conference on Mixed Design of Integrated Circuits and Systems, 2019

Analogue Implementation of a Fractional-PI^λ Controller for DC Motor Speed Control.

Norbert Herencsar, Aslihan Kartci, Jaroslav Koton, Roman Sotner, Baris Baykant Alagöz, Celaleddin Yeroglu

Proceedings of the 28th IEEE International Symposium on Industrial Electronics, 2019

Electronically Controllable Audio Equalizers Based on Bilinear Immittances Utilizing CMOS Voltage Differencing Current Conveyor.

Roman Sotner, Jan Jerabek, Serdar Özoguz, David Kubánek, Lukas Langhammer

Proceedings of the IEEE International Symposium on Circuits and Systems, 2019

Voltage Differencing Current Conveyor Differential Input Transconductance Amplifier: Novel Active Element and Its Resistorless Filtering Application.

Roman Sotner, Jan Jerabek, Lukas Langhammer, Jiri Petrzela, Winai Jaikla, Sunti Tuntrakool

Proceedings of the 11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, 2019

Electronically Tunable Oscillator Utilizing Reinforced Controllable Parameters.

Lukas Langhammer, Roman Sotner, Ondrej Domansky

Proceedings of the 11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, 2019

Frequency Corrector Using Voltage Differencing Current Conveyor Transconductance Amplifiers.

Roman Sotner, Jiri Petrzela, Jan Jerabek, Lukas Langhammer

Proceedings of the 26th IEEE International Conference on Electronics, Circuits and Systems, 2019

Novel Electronically Reconfigurable Filter and Its Fractional-Order Counterpart.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Jan Jerabek, Peter A. Ushakov

Proceedings of the 26th IEEE International Conference on Electronics, Circuits and Systems, 2019

2018

Methods for Extended Tunability in Quadrature Oscillators Based on Enhanced Electronic Control of Time Constants.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Jiri Petrzela

IEEE Trans. Instrum. Meas., 2018

CMOS Current Feedback Operational Amplifier-Based Relaxation Generator for Capacity to Voltage Sensor Interface.

Ladislav Polak, Roman Sotner, Jiri Petrzela, Jan Jerabek

Sensors, 2018

Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter.

Jan Dvorak, Lukas Langhammer, Jan Jerabek, Jaroslav Koton, Roman Sotner, Josef Polak

J. Circuits Syst. Comput., 2018

Reconnection-less Reconfigurable Filter and its Application into Adaptive Circuit.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Lukas Langhammer, Ondrej Domansky, Winai Jaikla, Tomás Dostál

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

Chaotic Admittance with Analog Multipliers.

Jiri Petrzela, Roman Sotner

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

Modification of Current Follower/Amplifier with Controllable Intrinsic Resistance.

Lukas Langhammer, Roman Sotner, Jan Dvorak

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

Single- Input Multiple-Output and Multiple-Input Single-Output Fractional-Order Filter Designs.

Elpida Kaskouta, Themis Kamilaris, Roman Sotner, Jan Jerabek, Costas Psychalinos

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

Electronically Controllable Square/Triangular Wave Generator with Current-Controlled Differential Difference Current Conveyors.

Jan Jerabek, Roman Sotner, Norbert Herencsar, Jan Dvorak, Kamil Vrba

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

Reconfigurable Impedance Converter for Synthesis of Integer and Fractional-Order Synthetic Elements.

Ondrej Domansky, Roman Sotner, Lukas Langhammer

Proceedings of the 41st International Conference on Telecommunications and Signal Processing, 2018

New Reconfigurable Universal SISO Biquad Filter Implemented by Advanced CMOS Active Elements.

Roman Sotner, Lukas Langhammer, Ondrej Domansky, Jiri Petrzela, Jan Jerabek, Tomás Dostál

Proceedings of the 15th International Conference on Synthesis, 2018

New Low-Voltage CMOS Differential Difference Amplifier (DDA) and an Application Example.

Roman Sotner, Norbert Herencsar, Vilem Kledrowetz, Aslihan Kartci, Jan Jerabek

Proceedings of the IEEE 61st International Midwest Symposium on Circuits and Systems, 2018

On Advanced Current Conveyor Applications Having Capacitor Connected to Current Input Terminal.

Roman Sotner, Jiri Petrzela, Jan Jerabek, Lukas Langhammer, Tomás Dostál

Proceedings of the 25th International Conference "Mixed Design of Integrated Circuits and System", 2018

Fully-Differential Universal Frequency Filter with Dual-Parameter Control of the Pole Frequency and Quality Factor.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Jan Jerabek, Miroslav Zapletal

Proceedings of the IEEE International Symposium on Circuits and Systems, 2018

A Novel Pseudo-Differential Integer/ Fractional-Order Voltage-Mode All-Pass Filter.

Norbert Herencsar, Roman Sotner, Aslihan Kartci, Kamil Vrba

Proceedings of the IEEE International Symposium on Circuits and Systems, 2018

Practical Design of Fractional-Order Oscillator Employing Simple Resonator and Negative Resistor.

Roman Sotner, Jan Jerabek, Ondrej Domansky, Norbert Herencsar, Aslihan Kartci, Jan Dvorak

Proceedings of the 10th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, 2018

2017

Resistor-Less Single-Purpose or Reconfigurable Biquads Utilizing Single <i>z</i>-Copy Controlled-Gain Voltage Differencing Current Conveyor.

Jan Jerabek, Roman Sotner, Josef Polak, Lukas Langhammer, Norbert Herencsar, Roman Prokop, Kamil Vrba

J. Circuits Syst. Comput., 2017

Reconfigurable Fractional-Order Filter with Electronically Controllable Slope of Attenuation, Pole Frequency and Type of Approximation.

Jan Jerabek, Roman Sotner, Jan Dvorak, Josef Polak, David Kubánek, Norbert Herencsar, Jaroslav Koton

J. Circuits Syst. Comput., 2017

Programmable analog array of fractional-order filters with CFOAs.

Georgia Tsirimokou, Roman Sotner, Jan Jerabek, Jaroslav Koton, Costas Psychalinos

Proceedings of the 40th International Conference on Telecommunications and Signal Processing, 2017

Exponentially tunable voltage controlled quadrature oscillator.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Ondrej Domansky, Winai Jaikla, Tomás Dostál

Proceedings of the 40th International Conference on Telecommunications and Signal Processing, 2017

A 1+α Low-Pass Fractional-Order Frequency Filter with Adjustable Parameters.

Lukas Langhammer, Roman Sotner, Jan Dvorak, Ondrej Domansky, Jan Jerabek, Jiri Uher

Proceedings of the 40th International Conference on Telecommunications and Signal Processing, 2017

Pseudo-Differential electronically controllable second-order band-pass filter using modified current differencing/summing units.

Jan Jerabek, Roman Sotner, Jaroslav Koton, Norbert Herencsar, Kamil Vrba

Proceedings of the 40th International Conference on Telecommunications and Signal Processing, 2017

Single active parameter tunable simple band-pass filter: Methods for tunability range extension.

Roman Sotner, Jiri Petrzela, Ondrej Domansky, Lukas Langhammer, Tomás Dostál

Proceedings of the 24th International Conference Mixed Design of Integrated Circuits and Systems, 2017

Arbitrary generation of phase shift by pseudodifferential bilinear sections and their application.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Norbert Herencsar, Roman Prokop, Tomás Dostál

Proceedings of the 24th IEEE International Conference on Electronics, Circuits and Systems, 2017

Design of integer/fractional-order filter with electronically reconfigurable transfer response.

Roman Sotner, Norbert Herencsar, Jan Jerabek, Jiri Petrzela, Tomás Dostál

Proceedings of the 24th IEEE International Conference on Electronics, Circuits and Systems, 2017

Current feedback operational amplifier based two-port frequency equalizer.

Roman Sotner, Jiri Petrzela, Ondrej Domansky, Tomás Dostál

Proceedings of the 2017 European Conference on Circuit Theory and Design, 2017

2016

Behavioral model for emulation of ZC-CG-VDCC.

Jan Jerabek, Roman Sotner, Norbert Herencsar, Kamil Vrba, Tomás Dostál

IEICE Electron. Express, 2016

Simple approach for synthesis of fractional-order grounded immittances based on OTAs.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Tomás Dostál

Proceedings of the 39th International Conference on Telecommunications and Signal Processing, 2016

Fractional-order low-pass filter with electronically adjustable parameters.

Jan Jerabek, Roman Sotner, David Kubánek, Jan Dvorak, Lukas Langhammer, Norbert Herencsar, Kamil Vrba

Proceedings of the 39th International Conference on Telecommunications and Signal Processing, 2016

Electronically tunable fractional-order low-pass filter with current followers.

Jan Dvorak, Lukas Langhammer, Jan Jerabek, Jaroslav Koton, Roman Sotner, Josef Polak

Proceedings of the 39th International Conference on Telecommunications and Signal Processing, 2016

Practically implemented electronically controlled CMOS voltage differencing current conveyor.

Roman Sotner, Jan Jerabek, Roman Prokop, Vilem Kledrowetz, Josef Polak, Lukas Fujcik, Tomás Dostál

Proceedings of the IEEE 59th International Midwest Symposium on Circuits and Systems, 2016

Inductance simulator based on dual controlled CMOS voltage differencing current conveyor.

Jan Jerabek, Roman Sotner, Roman Prokop, Vilem Kledrowetz, Aslihan Kartci, Umut Engin Ayten

Proceedings of the IEEE 59th International Midwest Symposium on Circuits and Systems, 2016

2015

Design of Z-copy controlled-gain voltage differencing current conveyor based adjustable functional generator.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Tomás Dostál, Kamil Vrba

Microelectron. J., 2015

Design of the simple oscillator with linear tuning and pi/4 phase shift based on emulator of the modified current differencing unit.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Kamil Vrba

IEICE Electron. Express, 2015

Comparison of Two Solutions of Quadrature Oscillators With Linear Control of Frequency of Oscillation Employing Modern Commercially Available Devices.

Roman Sotner, Jan Jerabek, Lukas Langhammer, Josef Polak, Norbert Herencsar, Roman Prokop, Jiri Petrzela, Winai Jaikla

Circuits Syst. Signal Process., 2015

Behavioral models of current conveyor of second generation with advanced controllable inter-terminal relations.

Roman Sotner, Jan Jerabek, Aslihan Kartci, Norbert Herencsar, Roman Prokop, Jiri Petrzela, Kamil Vrba

Proceedings of the 38th International Conference on Telecommunications and Signal Processing, 2015

Electronically linearly voltage controlled second-order harmonic oscillator with multiples of π/4 phase shifts.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Jiun-Wei Horng, Kamil Vrba

Proceedings of the 38th International Conference on Telecommunications and Signal Processing, 2015

Two behavioral models of the electronically controlled generalized current conveyor of the second generation.

Jan Jerabek, Roman Sotner, Aslihan Kartci, Norbert Herencsar, Tomás Dostál, Kamil Vrba

Proceedings of the 38th International Conference on Telecommunications and Signal Processing, 2015

Behavioral model for Z-copy Voltage Controlled Current Follower Differential Input Transconductance Amplifier and its features.

Jan Jerabek, Roman Sotner, Norbert Herencsar, Winai Jaikla, Kamil Vrba

Proceedings of the 38th International Conference on Telecommunications and Signal Processing, 2015

Electronically tunable VDCC-based floating capacitance multiplier.

Aslihan Kartci, Umut Engin Ayten, Roman Sotner, Remzi Arslanalp

Proceedings of the 2015 23nd Signal Processing and Communications Applications Conference (SIU), 2015

Quadrature oscillator solution suitable with arbitrary and electronically adjustable phase shift.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Roman Prokop, Kamil Vrba, Aslihan Kartci, Tomás Dostál

Proceedings of the 2015 IEEE International Symposium on Circuits and Systems, 2015

Reconfigurable 1^st order filters based on differential voltage input and a single current output transconductance multiplier.

Roman Sotner, Jan Jerabek, Roman Prokop, Vilem Kledrowetz, Lukas Fujcik, Tomás Dostál

Proceedings of the IEEE EUROCON 2015, 2015

Importance of amplitude stability and spectral purity of produced signals in a quadrature oscillator.

Jan Jerabek, Roman Sotner, Norbert Herencsar, Aslihan Kartci

Proceedings of the IEEE EUROCON 2015, 2015

Application possibilities of VDCC in general floating element simulator circuit.

Aslihan Kartci, Umut Engin Ayten, Norbert Herencsar, Roman Sotner, Jan Jerabek, Kamil Vrba

Proceedings of the European Conference on Circuit Theory and Design, 2015

2014

Electronically controlled oscillator with linear frequency adjusting for four-phase or differential quadrature output signal generation.

Roman Sotner, Norbert Herencsar, Jan Jerabek, Jaroslav Koton, Tomás Dostál, Kamil Vrba

Int. J. Circuit Theory Appl., 2014

Precise Electronically Adjustable Oscillator Suitable for Quadrature Signal Generation Employing Active Elements with Current and Voltage Gain Control.

Roman Sotner, Zdenek Hrubos, Norbert Herencsar, Jan Jerabek, Tomás Dostál, Kamil Vrba

Circuits Syst. Signal Process., 2014

2013

Practical aspects of operation of simple triangular and square wave generator employing diamond transistor and controllable amplifiers.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Abhirup Lahiri, Jiri Petrzela, Kamil Vrba

Proceedings of the 36th International Conference on Telecommunications and Signal Processing, 2013

Controlled Gain Current and Differential Voltage Amplifier and study of its application in simple adjustable oscillator.

Roman Sotner, Jan Jerabek, Tomás Gotthans, Roman Prokop, Tomás Dostál, Kamil Vrba

Proceedings of the 36th International Conference on Telecommunications and Signal Processing, 2013

General current-mode filtering structure with controllable current active elements.

Jan Jerabek, Roman Sotner, Kamil Vrba

Proceedings of the 36th International Conference on Telecommunications and Signal Processing, 2013

2012

Electronically adjustable modification of CFA: Double current controlled CFA (DCC-CFA).

Roman Sotner, Jan Jerabek, Norbert Herencsar, Tomás Dostál, Kamil Vrba

Proceedings of the 35th International Conference on Telecommunications and Signal Processing, 2012

Comparison of the SITO current-mode universal filters using multiple-output current followers.

Jan Jerabek, Roman Sotner, Kamil Vrba

Proceedings of the 35th International Conference on Telecommunications and Signal Processing, 2012

2011

Additional approach to the conception of current follower and amplifier with controllable features.

Roman Sotner, Jan Jerabek, Norbert Herencsar, Tomás Dostál, Kamil Vrba

Proceedings of the 34th International Conference on Telecommunications and Signal Processing (TSP 2011), 2011

Current-mode filters with single-ended and fully-differential Nth-order synthetic elements.

Jan Jerabek, Roman Sotner, Kamil Vrba

Proceedings of the 34th International Conference on Telecommunications and Signal Processing (TSP 2011), 2011

2009

Electronically tunable simple oscillator based on single-output and multiple-output transconductor.

Roman Sotner, Jan Jerabek, Jiri Petrzela, Tomás Dostál, Kamil Vrba

IEICE Electron. Express, 2009