Search results for: LOW-FREQUENCY NOISE

• The Low-frequency Noise of SiC MESFETs

  Publication

  • J. A. Cichosz
  • A. Konczakowska

  - Year 2009

  Przedstawiono system do pomiaru szumów małoczestotliwościowych tranzystorów SiC MESFET oraz przykładowe wyniki pomiarów.

• The Low Frequency Noise Behaviour of SiC MESFETs

  Publication

  • A. Konczakowska
  • J. A. Cichosz
  • D. Dokupil
  • P. Flisikowski
  • A. Szewczyk
  • B. Stawarz-Graczyk

  - Year 2011

• A Model for Low Frequency Noise Generation in MOSFETs.

  Publication

  • A. Szewczyk
  • J. A. Chroboczek

  - Year 2004

  Przedstawiono model generacji szumów małoczęstotliwosciowych tranzystora MOS. Model został użyty do symulacji szumów cienkotlenkowych tranzystorów MOS. Wyniki symulacji porównano z danymi pomiarowymi. Zaprezentowano sposób wykorzystania pomiarów szumów m.cz. do wyznaczania niektórych parametrów charakteryzujących tranzystory MOS.

• Assessment of Supercapacitor’s Quality by Means of Low Frequency Noise

  Publication

  • A. Szewczyk
  • J. Smulko
  • Ł. Lentka

  - Year 2017

  Low frequency noise is a well-known tool for quality and reliability assessment of electronic devices. This phenomenon is observed in different electrochemical devices as well (e.g., smart windows, electrochemical corrosion processes). Thus, we can assume that the same tool can be used to asses quality of supercapacitors. Their quality is usually determined only by capacitance and/or equivalent series resistance (ESR), or impedance....

• Shipping Low Frequency Noise and Its Propagation in Shallow Water

  Publication

  • E. Kozaczka
  • G. Grelowska

  - ACTA PHYSICA POLONICA A - Year 2011

  One of the most significant factor influencing acoustical climate of the sea is underwater noise generated by moving ships. If the considered sea area has features of the shallow water, namely the wave frequency fulfils relation f < 10c/h, where c denotes phase speed of sound, and h is depths of the sea, then in certain distance from the wave source specific image of sound pressure distribution in the mean of wave modes appears....

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• Low-frequency noise in ZrS3 van der Waals semiconductor nanoribbons

  Publication

  • A. Rehman
  • G. Cywiński
  • W. Knap
  • J. Smulko
  • A. Balandin
  • S. Rumyantsev

  - APPLIED PHYSICS LETTERS - Year 2023

  We report the results of the investigation of low-frequency electronic noise in ZrS3 van der Waals semiconductor nanoribbons. The test structures were of the back-gated field-effect-transistor type with a normally off n-channel and an on-to-off ratio of up to four orders of magnitude. The current–voltage transfer characteristics revealed significant hysteresis owing to the presence of deep levels. The noise in ZrS3 nanoribbons...

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• A review of design approaches for the implementation of low-frequency noise measurement systems

  Publication

  • G. Scandurra
  • C. Ciofi
  • J. Smulko
  • H. Wen

  - REVIEW OF SCIENTIFIC INSTRUMENTS - Year 2022

  Electronic noise has its roots in the fundamental physical interactions between matter and charged particles, carrying information about the phenomena that occur at the microscopic level. Therefore, Low-Frequency Noise Measurements (LFNM) are a well-established technique for the characterization of electron devices and materials and, compared to other techniques, they offer the advantage of being non-destructive and of providing...

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• Assessment of Fuel Cells’ State of Health by Low-Frequency Noise Measurements

  Publication

  • A. Szewczyk
  • Ł. Gaweł
  • K. Darowicki
  • J. Smulko

  - ENERGIES - Year 2021

  We proposed applying low-frequency (flicker) noise in proton-exchange membrane fuel cells under selected loads to assess their state of health. The measurement set-up comprised a precise data acquisition board and was able to record the DC voltage and its random component at the output. The set-up estimated the voltage noise power spectral density at frequencies up to a few hundred mHz. We observed the evolution of the electrical...

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• Low frequency noise and DLTS as silicon solar cell characterization tools

  Publication

  • Z. Chobola
  • Z. Ruzicka
  • L. Hasse

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2002

  Praca zawiera wyniki pomiarów DLTS próbek o powierzchni 1 mm2 krzemowych baterii słonecznych wykazujących znaczne niejednorodności wykryte za pomocą metody LBIV (Light Beam Induced Voltage). Wyniki pomiarów charakterystyk stałoprądowych oraz szumowych tych próbek zostały także przedstawione.

• Low Frequency Noise Measurement of Reverse Polarized Silicon Carbide Schottky Diodes

  Publication

  • A. Szewczyk
  • B. Stawarz-Graczyk

  - Year 2009

  W artykule przedstawiono wyniki pomiaró szumów cz. wstecznie spolaryzowanych diod Schottky'ego.

• Low frequency noise and reliability properties of 0.12um CMOS devices with Ta2O5 as gate dielectrics

  Publication

  • M. Fadlallah
  • A. Szewczyk
  • C. Giannakopoulos
  • B. Cretu
  • F. Monsieur
  • T. Devoivre
  • J. Jomaah
  • G. Ghibaudo

  - MICROELECTRONICS RELIABILITY - Year 2002

  W artykule przedstawiono wyniki badań jakości tranzystorów CMOS 0.12um z Ta2O5 użytym jako dielektryk bramki. Przedstawione są charakterystyki statyczne elementów oraz wyniki pomiarów szumów prowadzonych w celu określenia jakości warstwy dielektrycznej Ta2O5, a także wyniki badań przeciążeniowych elementów.

• Device characteristics extraction by low frequency noise measurements; Someresults on the state-of-the-art MOSFET´s

  Publication

  • J. A. Chroboczek
  • C. Leroux
  • T. Ernst
  • A. Szewczyk
  • K. Romanjek
  • G. Ghibaudo

  - Year 2003

  Przedstawiono wyniki pomiarów i analizy szumów tranzystorów MOSFET z izolatorem bramki wykonanym z SiO2 i HfO2. Wyniki pomiarów wykorzystano do oszacowania gęstości aktywnych stanów na powierzchni użytego tlenku i porównano z wynikami otrzymanymi metodą charge-pumping.

• The current amplifier in low frequency noise measurements; Absolute calibration and rigorous 1/f noise extraction for MOSFET´s

  Publication

  • J. A. Chroboczek
  • G. Reimbold
  • A. Szewczyk
  • G. Piantino

  - Year 2003

  Przedstawiono budowę wzmacniacza prądowego i sposób obliczania szumów wyjściowych przy dołączonym do wejścia rezystorze wzorcowym. Przedstawiono wyniki eksperymentów potwierdzających prawidłowość przyjętego sposobu postępowania. Zaproponowano metodę wyznaczania składowej 1/f szumów drenu tranzystora MOSFET.

• Low-frequency noise in Au-decorated graphene–Si Schottky barrier diode at selected ambient gases

  Publication

  • J. Smulko
  • K. Drozdowska
  • A. Rehman
  • T. Welearegay
  • L. Österlund
  • S. Rumyantsev
  • G. Cywiński
  • B. Stonio
  • A. Krajewska
  • M. Filipiak
  • P. Sai

  - APPLIED PHYSICS LETTERS - Year 2023

  We report results of the current–voltage characteristics and low-frequency noise in Au nanoparticle (AuNP)-decorated graphene–Si Schottky barrier diodes. Measurements were conducted in ambient air with addition of either of two organic vapors, tetrahydrofuran [(CH2)4O; THF] and chloroform (CHCl3), as also during yellow light illumination (592nm), close to the measured particle plasmon polariton frequency of the Au nanoparticle...

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• Low-frequency current noise in electrochromic devices

  Publication

  • J. Smulko
  • A. Azens
  • L. B. Kish
  • C. G. Granqvist

  - SMART MATERIALS & STRUCTURES - Year 2008

  Obserwowano szumy typu 1/f w elemencie wykazującym zjawisko elektrochromizmu - zmiany swoich parametrów optycznych (przezroczystości) pod wpływem przyłożonego napięcia. Element składał się z porowatej warstwy nanocząstek WO3 oraz tlenku Ni-V. Obserwowano gęstość widmową mocy prądu szumów, która zalezała liniowo od kwadratu prądu stałego I płynącego przez element. Stwierdzono, że intensywne przełączanie elementu między trybem przezroczystym...

• Measurement of noise parameter set in the low frequency range: requirements and instrumentation.

  Publication

  • L. Hasse

  - Year 2004

  Opisano dwa podstawowe szumowe modele metrologiczne czwórnika: ze źródłami szumów odniesionymi do wejścia i ze zwarciowymi prądami szumów. Parametry szumowe opisujące modele zawierające korelację pomiędzy prądami i/lub napięciami są mierzone przy zastosowaniu metod bezpośrednich i pośrednich. Przedstawiono kilka technik redukcji szumów własnych systemu pomiarowego. Szerzej zaprezentowano dwukanałowy system do pomiaru szumów z komputerowym...

• Journal of Low Frequency Noise Vibration and Active Control

  Journals

  ISSN: 1461-3484 , eISSN: 2048-4046

• Joint time–frequency analysis of electrochemical noise

  Publication

  • K. Darowicki
  • A. Zieliński
  • A. Zieliński
  • K. Darowicki

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2001

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• Poroelastic Low Noise Road Surfaces

  Publication

  • J. Ejsmont
  • L. Goubert
  • B. Świeczko-Żurek
  • G. Ronowski

  - Year 2015

  Noise is one of the most important problems related to road traffic. During the last decades, noise emitted by engine and powertrain of vehicles was greatly reduced and tyres became a clearly dominant noise source. The paper describes the concept of low noise poroelastic road surfaces that are composed with mineral and rubber aggregate bound by polyurethane resin. Those surfaces have a porous structure and are much more flexible...

• Temperature influence on tyre/road noise frequency spectra

  Publication

  • P. Mioduszewski
  • S. Taryma
  • R. Woźniak

  - Year 2016

  The correction for temperature effect on measured tyre/road noise is very important as it may be one of the main sources of errors in measurement results due to substantial influence of this parameter on obtained values. The latest version of the Technical Specification ISO/CD TS 13471-1 about Temperature Corrections contains a proposal of correction procedure for normalizing measured noise levels to a reference air temperature...

• Noise measurements on low noise pavements - problems with inhomogeneity of wearing course

  Publication

  • P. Mioduszewski
  • W. Gardziejczyk

  - Year 2013

  During the last several years, when performing numerous CPX noise measurements on low noise pavements,significant inhomogeneity of the wearing course was observed in numerous cases. Similar problems were almost not existing regarding to the dense pavements.In general three main reasons of inhomogeneity can be defined. The first one are imperfections in technology of production of a asphalt mix or/and errors made already during...

• Potential reduction of traffic noise by the means of increased fleet of electric vehicles using a combination of low-noise tyres and low-noise road surfaces

  Publication

  • B. Truls
  • P. Mioduszewski

  - Year 2016

  In the future, the number of zero-emission vehicles like electric and plug-in hybrid vehicles (in electric mode) is expected to be a substantial part of the vehicle fleet. In Norway, such vehicles already account for approximately 20 % of all new cars sold. Since these vehicles emit negligible noise related to the power-train, the tyre/road noise is the dominating noise source. In the LEO project, tyres designed for such cars have...

• Noise modeling of static CMOS gates for low-noise circuit synthesis

  Publication

  • G. Blakiewicz
  • M. Chrzanowska-Jeske

  - Year 2006

  W artykule przedstawiono efektywną metodę modelowania widma szumu napięcia zasilającego generowanego przez statyczne bramki cyfrowe CMOS. Metoda modelowania uwzględnia krótkie impulsy prądowe powstające w czasie przełączania bramek i pozwala oszacować górne limity widma szumu napięcia zasilającego co umożliwia niskoszumową syntezę układów cyfrowych.

• LOW NOISE TIRES FOR HYBRID AND ELECTRIC VEHICLES

  Publication

  • J. Ejsmont
  • B. Świeczko-Żurek
  • S. Taryma

  - Year 2014

  Low Emission Vehicles that are hybrid and electric cars may benefit from specially designed tires that are optimized for driving conditions typical for such vehicles. It is possible that in the future Low Emission Vehicles, especially passenger cars, will substitute conventional vehicles in all applications, however for the time being they are mostly used in urban and suburban areas. Urban traffic has a rather low demand for grip...

• Ultra Low Noise Poroelastic Road Surfaces

  Publication

  • J. Ejsmont
  • L. Goubert
  • G. Ronowski
  • B. Świeczko-Żurek

  - Coatings - Year 2016

  Noise is one of the most important environmental problems related to road traffic. During the last decades, the noise emitted by the engines and powertrains of vehicles was greatly reduced and tires became a clearly dominant noise source. The article describes the concept of low noise poroelastic road surfaces that are composed of mineral and rubber aggregate bound by polyurethane resin. Those surfaces have a porous structure and...

  Full text available to download

• An improved frequency estimator for an adaptive active noise control scheme

  Publication

  • M. Meller
  • M. Niedźwiecki

  - Year 2010

  An improved frequency tracker is proposed for the recently introduced self optimizing narrowband interference canceller (SONIC). The scheme is designed for disturbances with quasi-linear frequency modulation and, under second-order Gaussian random-walk assumption, can be shown to be statistically efficient. One real-world experiment and several simulations show that a considerable improvement in disturbance rejection may be achieved...

• Low frequency noise measurements in advanced silocon devices.**2003, 136 s.116 rys. bibliogr. 29 poz. maszyn. Pomiary małoczęstotliwościowych szumów zaawansowanych elementów krzemowych. Rozprawa doktorska /15.04.2003./ Inst. Natl. P. Grenoble Promotorzy: prof. dr hab. inż. L. Spiralski, dr CNRS G. Ghibaudo.

  Publication

  • A. Szewczyk

  - Year 2003

  W pracy przedstawiono automatyczny system do pomiarów małoczęstotliwoscio-wych szumów struktur elementów półprzewodnikowych. System umożliwia automa-tyczne wyznaczanie charakterystyk stałoprądowych badanego elementu, pomiarszumów i wyznaczanie gęstości widmowej mocy w zadanym zakresie polaryzacji.Przytoczono wyniki przeprowadzonych testów systemu. Ważną składową pracy wy-niki pomiarów szumów tranzystorów MOS i bipolarnych...

• Relativistic runaway breakdown in low-frequency radio

  Publication

  • M. Füllekrug
  • R. Roussel-Dupré
  • E. Symbalisty
  • O. Chanrion
  • A. Odzimek
  • O. van
  • T. Neubert

  - JOURNAL OF GEOPHYSICAL RESEARCH - Year 2010

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• Reduction of Influence of the High-Frequency Noise on the Results of Surface Topography Measurements

  Publication

  • P. Podulka

  - Materials - Year 2021

  Full text to download in external service

• Biological hazards in low noise, poroelastic road surfaces

  Publication

  • B. Świeczko-Żurek

  - Year 2013

  Drainage pavements as well as poroelastic pavements ("PERS") are a very efficient way to decrease traffic noise by reducing tire/road noise at the source as well as noise propagation over the road surface. Many noise generating mechanisms at the tire/road interface are very much reduced by road porosity (pipe resonance, "air pumping", Helmholtz resonance and the horn effect). A well-designed porous or poroelastic road surface may...

• Development of low noise CCD readout front-end

  Publication

  • M. Jamroży
  • G. Kasprowicz
  • R. Romaniuk
  • K. Poźniak
  • R. S. Romaniuk

  - Year 2015

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• Development of low noise CCD readout front-end

  Publication

  • M. Jamroży
  • G. Kasprowicz
  • R. Romaniuk
  • K. Poźniak
  • R. S. Romaniuk

  - Year 2015

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• Design of low noise preamplifers for characterization of LSCO bolometers

  Publication

  • P. Wierzba
  • S. Rydzewska

  - Year 2005

  W artykule przedstawiono wymagania stawiane układom do pomiaru szumów bolometrów. Ze względu na niski poziom mierzonych szumów układy te wymagają zastosowania niskoszumnych przedwzmacniaczy i układów ustalających punkt pracy badanych detektorów. Omówiono konstrukcje dwóch przedwzmacniaczy z zintegrowanymi układami polaryzacji. Przedstawiono wyniki pomiarów szumów w zakresie częstotliwości 10-90Hz. Przedstawiono możliwości ulepszenia...

• Low-frequency tripping characteristics of residual current devices

  Publication

  • S. Czapp
  • K. Dobrzyński
  • J. Klucznik
  • Z. Lubośny

  - Year 2017

  Fast development of various types of converters makes their utilization in industry and in domestic installations very common. Due to converters, an earth fault current waveform in modern circuits can be distorted or its frequency can be different than 50/60 Hz. Frequency of earth fault (residual) current influences tripping of residual current devices which are widely used in low voltage systems. This paper presents the behaviour...

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• Dedicated power supply subsystem for ultra-low noise preamplifiers

  Publication

  • K. Karpienko
  • Ł. Surażyński
  • P. Wierzba

  - Year 2013

  In field of electronics there is need for low-noise amplifiers. Noise have the most important influence on analog circuits. Therefore exist necessity to develop new ultra-low noise power supplies, which can cooperate with specified amplifiers and preamplifiers. It is very common that professional power supplies are very expensive and still have disadvantages. This paper proposes simple and inexpensive solution, which fulfill specific...

• The influence of frequency controlled ac drives on vibration and audible noise level on ships

  Publication

  • B. Pałczyńska
  • L. Spiralski
  • J. Wyszkowski

  - Year 2005

  Określono korelacje między zakłóceniami elektrycznymi a wibracjami i hałasem w okrętowych układach napędowych z przemiennikami częstotliwości. Wskazano na destrukcyjny wpływ tych czynników na jakość życia załóg pływających.

• Decoding of the FSK signal with noise and distortion with the use of coefficients of the time-frequency transform.

  Publication

  • D. Rabczuk
  • B. Pałczyńska
  • L. Spiralski

  - Year 2004

  Streszczenie: Przeanalizowano sygnał z modulacją FSK wykorzystując metodę transformacji czasowo-częstotliwościowej różniące się sposobem podziału płaszczyzny TF na atomy: krótko-okresowej transformacji Fouriera, transformacji falkowej i transformacji pakietami falkowymi. Transformacja falkowa zapewnia dobrą lokalizację czasową zakłóceń o wielkiej częstotliwości, podczas gdy transformacja pakietami falkowymi zapewnia dobrą lokalizację...

• Low Noise Poroelastic Road Pavements Based On Bituminous Binder

  Publication

  • J. Ejsmont
  • B. Świeczko-Żurek
  • P. Jaskuła

  - Year 2019

  Tire/road noise is the dominant source of traffic noise. It depends both on the tire design and on the characteristics of road pavements as well as on the vehicles’ operating conditions. Due to the fact that conventional (pneumatic) car tires have almost reached the limits of their ability to further reduce their noisiness, it is widely believed that the additional reduction of tire noise will be possible mainly through modifications...

• Inhomogeneity of low-noise wearing courses evaluated by tire/road noise measurements using the close-proximity method

  Publication

  • P. Mioduszewski
  • W. Gardziejczyk

  - APPLIED ACOUSTICS - Year 2016

  Performing numerous analyses of tire/road noise measurements on low-noise pavements during the last several years, the authors observed significant inhomogeneity of the wearing course in numerous cases, while similar problems were almost non-existent when dense pavements were measured. Three main causes of low-noise pavement inhomogeneity can be defined. The first one is imperfections in the technology used for asphalt mix production...

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• A new approach to active noise and vibration control - [Part II: unknown frequency case]

  Publication

  • M. Niedźwiecki
  • M. Meller

  - Year 2009

  This paper presents a new approach to rejection of complex-valued sinusoidal disturbances acting at the output of a discrete-time stable linear plant with unknown and possibly timevarying dynamics. It is assumed that both the instantaneous frequency of the sinusoidal disturbance and its amplitude may be slowly varying with time and that the output signal is contaminated with wideband measurement noise. It is not assumed that a...

• Low Frequency Conducted Emissions of Grid Connected Static Converters

  Publication

  • J. Łuszcz
  • R. Smolenski

  - IEEE Electromagnetic Compatibility Magazine - Year 2015

  Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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• A new approach to active noise and vibration control - [Part I: the known frequency case]

  Publication

  • M. Niedźwiecki
  • M. Meller

  - Year 2009

  This paper presents a new approach to rejection of complex-valued sinusoidal disturbances acting at the output of a discrete-time stable linear plant with unknown dynamics. It is assumed that the frequency of the sinusoidal disturbance is known, and that the output signal is contaminated with wideband measurement noise. The disturbance rejection control rule is first derived and analyzed for a nominal plant model, different from...

• Theoretical and experimental investigation of low-noise optoelectronic system configurations for low-coherent optical signal detection

  Publication

  • M. Szczerska
  • M. Strąkowski
  • B. Kosmowski
  • R. Hypszer

  - JOURNAL DE PHYSIQUE IV - Year 2006

  W artykule przedstawiono wyniki teoretycznej i eksperymentalnej analizy konfiguracji niskokoherencyjnego układu detekcji sygnałów optycznych. Zaprezentowano zaprojektowany układ detekcji optycznych sygnałów niskokoherencyjnych, który pozwala na pracę w konfiguracji zrównoważonej i niezrównoważonej, co umożliwia porównanie parametrów obu konfiguracji.

• Low noise poroelastic road pavements based on modified asphalt binder

  Publication

  • J. Ejsmont
  • B. Świeczko-Żurek
  • W. Gardziejczyk

  - Year 2020

  Tire/road noise is one of the most important environmental problems related to road traffic. As the most effective way to fight noise is reduction of sound emission from the source, a lot of work is being done to improve tire and road surfaces construction. This paper describes the first “road” results obtained within the SEPOR project, which is focused on developing a low noise poroelastic road surface based on bituminous binder....

• Low frequency nois of supecapacitor

  Open Research Data

  open access

  • A. Szewczyk

  Dataset contains noise measurement results on prototype electrochemical double layer capacitor. The measurement procedure is described in https://dx.doi.org/10.1515/mms-2017-0059.

• Low frequency nois of supecapacitor

  Open Research Data

  open access

  • A. Szewczyk

  Dataset contains results of low frequency noise observation during discharge of commercially available supercapacitor, type DRL 2.7V 10F, with a nominal capacitance 10 F and a nominal voltage 2.7 V. Supercapacitor was charged to various voltages and discharged through a resistor. In the experiment the 50 Ohm and 200 Ohm resistors were used. The supercapacitor...

• Audible noise in ship’s electrical drive systems with frequency converters

  Open Research Data

  open access

  • B. Pałczyńska
  • J. Wyszkowski

  The presented dataset is part of research focusing on the impact of the ship's electrical drive systems with frequency converters on vibrations and the level of audible noise on ships.

• A virtual instrument for the adaptive analysis of low-frequency magnetic-field emissions

  Publication

  • B. Palczynska
  • B. Pałczyńska

  - Year 2015

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• <title>New low noise CCD cameras for Pi-of-the-Sky project</title>

  Publication

  • G. Kasprowicz
  • H. Czyrkowski
  • R. Dabrowski
  • W. Dominik
  • L. Mankiewicz
  • K. Pozniak
  • R. Romaniuk
  • P. Sitek
  • M. Sokolowski
  • R. Sulej... and 3 others

  - Year 2006

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• The measurement of input power of power supply in network disturbed by low frequency distortions

  Publication

  • S. Galla
  • A. Szewczyk

  - Przegląd Elektrotechniczny - Year 2016

  In the paper authors present results of observation of input power changes versus harmonics amplitude in supply voltage of low-power power supply device. In the study, the electrical measurements supported with thermal imaging were used. The input circuit elements of studied device responsible for input power increase are pointed

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