Search results for: radio frequency disturbances

• IEEE Journal of Radio Frequency Identification

  Journals

  eISSN: 2469-7281

• 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

  Full text to download in external service

• International Journal of Radio Frequency Identification Technology and Applications

  Journals

  ISSN: 1745-3216

• Influence of a Radio Frequency on RF Fingerprinting Accuracy Based on Ray Tracing Simulation

  Publication

  • P. Woźnica
  • Ł. Kulas

  - Year 2013

  In this paper the influence of a radio signal frequency on performance of Indoor Positioning System based on fingerprinting has been examined using ray-tracing simulations. It has been simulated how spatial distribution of an RF signal strength change with the signal’s frequency. The results were used to show its’ impact on the behavior of localization algorithms that are employing RSS measurements to determine node’s position...

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• Compatible DC and small-signal MOSFET models for radio and microwave frequency simulation

  Publication

  • W. Kordalski
  • T. Stefański

  - Year 2005

  Zaprezentowano nowy model stałoprądowy tranzystora MOS i kompatybilny z nim uogólniony nie-quasi-statyczny model małosygnałowy. Model stałoprądowy został eksperymentalnie zweryfikowany dla tranzystorów MOS o długości kanału od 75 nm do kilkunastu mikrometrów, a model małosygnałowy od zera herców do 30 GHz.

• The power spectral density of audible noise and electric disturbances in ship’s electrical drive systems with frequency converters

  Open Research Data

  open access

  • B. Pałczyńska

  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.

• IEEE International Conference on Radio Frequency Identification

  Conferences

• Pulse-Modulated Radio-Frequency Alternating-Current-Driven Atmospheric-Pressure Glow Discharge for Continuous-Flow Synthesis of Silver Nanoparticles and Evaluation of Their Cytotoxicity toward Human Melanoma Cells

  Publication

  • A. Dzimitrowicz
  • A. Bielawska-Pohl
  • G. diCenzo
  • P. Jamroz
  • J. Macioszczyk
  • A. Klimczak
  • P. Pohl

  - Nanomaterials - Year 2018

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• The radiated immunity test of an astable multivibrator in the frequency range from 100 MHz to 300 MHz

  Open Research Data

  open access

  • P. Ławniczak
  • B. Pałczyńska

  - series: Radiated immunity measurements of electronic devices in a GTEM cell

  The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 100 MHz to 300 MHz were...

• The radiated immunity test of an astable multivibrator at over-normative field strengths

  Open Research Data

  open access

  • P. Ławniczak
  • B. Pałczyńska

  - series: Radiated immunity measurements of electronic devices in a GTEM cell

  The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz were performed...

• The radiated immunity test of an astable multivibrator for various supply voltages

  Open Research Data

  open access

  • P. Ławniczak
  • B. Pałczyńska

  - series: Radiated immunity measurements of electronic devices in a GTEM cell

  The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator supplied from a power supply with an output voltage of 6V and 7.5 V. Tests of immunity of electronic systems to radiated radio frequency (RF)...

• The conducted immunity test of a power supply unit in the frequency range from 19 MHz to 26 MHz for the RF voltage level of 3 V

  Open Research Data

  open access

  • M. Kwiatkowski
  • B. Pałczyńska

  - series: Measurements of immunity to conducted disturbances, induced by radio-frequency fields

  The dataset presents a result of measurements that are a part of immunity tests to conducted disturbances, induced by radio-frequency fields. The immunity tests were carried out on the mains cable of the DF1723003TC NDN power supply unit. Tests of immunity of electronic systems to conducted disturbances in the frequency range from 19 MHz to 26 MHz were...

• The conducted immunity test of a power supply unit in the frequency range from 19 MHz to 26 MHz for the RF voltage level of 1 V

  Open Research Data

  open access

  • M. Kwiatkowski
  • B. Pałczyńska

  - series: Measurements of immunity to conducted disturbances, induced by radio-frequency fields

  The dataset presents a result of measurements that are a part of immunity tests to conducted disturbances, induced by radio-frequency fields. The immunity tests were carried out on the mains cable of the DF1723003TC NDN power supply unit. Tests of immunity of electronic systems to conducted disturbances in the frequency range from 19 MHz to 26 MHz were...

• The conducted immunity test of a power supply unit in the frequency range from 19 MHz to 26 MHz for the RF voltage level of 10 V

  Open Research Data

  open access

  • M. Kwiatkowski
  • B. Pałczyńska

  - series: Measurements of immunity to conducted disturbances, induced by radio-frequency fields

  The dataset presents a result of measurements that are a part of immunity tests to conducted disturbances, induced by radio-frequency fields. The immunity tests were carried out on the mains cable of the DF1723003TC NDN power supply unit. Tests of immunity of electronic systems to conducted disturbances in the frequency range from 19 MHz to 26 MHz were...

• The conducted immunity test of a power supply unit in accordance with EMC standards

  Open Research Data

  open access

  • M. Kwiatkowski
  • B. Pałczyńska

  - series: Measurements of immunity to conducted disturbances, induced by radio-frequency fields

  The dataset presents a result of measurements that are a part of immunity tests to conducted disturbances, induced by radio-frequency fields. The immunity tests were carried out on the mains cable of the DF1723003TC NDN power supply. Tests of immunity of electronic systems to conducted disturbances in the frequency range from 150 kHz to 230 MHz are...

• The standard radiated immunity test of an astable multivibrator at a normative field strength

  Open Research Data

  open access

  • P. Ławniczak
  • B. Pałczyńska

  - series: Radiated immunity measurements of electronic devices in a GTEM cell

  The dataset presents a result of measurements that are a part of electromagnetic field immunity tests. The radiated, radio frequency, immunity tests were carried out for a typical astable electronic multivibrator. Tests of immunity of electronic systems to radiated radio frequency (RF) disturbances in the frequency range from 80 MHz to 1 GHz are performed...

• The conducted immunity test of an AC adaptor in accordance with EMC standards

  Open Research Data

  open access

  • W. Lendzion
  • J. Magoń
  • B. Pałczyńska

  - series: Measurements of immunity to conducted disturbances, induced by radio-frequency fields

  The dataset presents a result of measurements that are a part of immunity tests to conducted disturbances, induced by radio-frequency fields. The immunity tests were carried out on the mains cable of the ac adaptor PHILIPS DC power supply SBC 6654. Tests of immunity of electronic systems to conducted disturbances in the frequency range from 150 kHz...

• [ITiT] Transmission Channel in Radio Communication Systems

  e-Learning Courses

  • S. J. Ambroziak

  {mlang pl} Dyscyplina: informatyka techniczna i telekomunikacja Zajęcia fakultatywne dla doktorantów II roku Prowadzący:  dr hab. inż. Sławomir Ambroziak, prof. PG Liczba godzin: 15 Forma zajęć: wykład {mlang} {mlang en} Discipline: technical informatics and telecommunications Elective course for 2nd-year PhD students Academic teachers: dr hab. inż. Sławomir Ambroziak, prof. PG Total hours of training: 15 teaching hours Course...

• [ITiT] Transmission Channel in Radio Communication Systems - 2023/2024

  e-Learning Courses

  • S. J. Ambroziak

  {mlang pl} Dyscyplina: informatyka techniczna i telekomunikacja Zajęcia fakultatywne dla doktorantów II roku Prowadzący:  dr hab. inż. Sławomir Ambroziak, prof. PG Liczba godzin: 15 Forma zajęć: wykład {mlang} {mlang en} Discipline: technical informatics and telecommunications Elective course for 2nd-year PhD students Academic teachers: dr hab. inż. Sławomir Ambroziak, prof. PG Total hours of training: 15 teaching hours Course...

• Przestrzenie Inteligentne - 2022/2023

  e-Learning Courses

  • R. Lech
  • Ł. Kulas
  • K. Trzebiatowski
  • W. Kalista
  • P. Kwapisiewicz

  Celem przedmiotu jest wprowadzenie do zagadnień praktycznych przestrzeni inteligentnych (np. inteligentny dom wykorzystujący urządzenia IoT, inteligentna fabryka w ramach Przemysłu 4.0, etc.) w oparciu o przetwarzanie sygnałów radiowych RF (ang. radio frequency) w celu dostarczenia wymaganych funkcjonalności w bezprzewodowych systemach wbudowanych.

• Przestrzenie Inteligentne - 2024/2025

  e-Learning Courses

  • R. Piotrowski
  • R. Lech
  • Ł. Kulas
  • K. Trzebiatowski
  • P. Kwapisiewicz
  • B. Sikorski
  • M. Derc

  Celem przedmiotu jest wprowadzenie do zagadnień praktycznych przestrzeni inteligentnych (np. inteligentny dom wykorzystujący urządzenia IoT, inteligentna fabryka w ramach Przemysłu 4.0, etc.) w oparciu o przetwarzanie sygnałów radiowych RF (ang. radio frequency) w celu dostarczenia wymaganych funkcjonalności w bezprzewodowych systemach wbudowanych.

• Analiza wpływu błędu częstotliwości próbkowania na sygnały odbierane w systemie LTE

  Publication

  • P. Gadka

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2016

  W artykule dokonano analizy wpływu błędu częstotliwości próbkowania w platformie radia programowalnego na odbierany sygnał LTE (Long Term Evolution).

• Aktywny system RFID do lokalizacji i identyfikacji obiektów w wielomodalnej infrastrukturze bezpieczeństwa

  Publication

  • J. Cichowski
  • A. Czyżewski

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2014

  Przedstawiono prace koncepcyjne, badawcze oraz implementacyjne skoncentrowane na praktycznej realizacji systemu detekcji obiektów z wykorzystaniem kamer wizyjnych i identyfikacji radiowej. Zaproponowano rozbudowę wielomodalnego teleinformatycznego systemu bezpieczeństwa o warstwę identyfikacji radiowej obiektów. Omówiono założenia zaprojektowanego systemu oraz opracowaną warstwę sprzętową. Zaproponowano i przedyskutowano praktyczne...

• Badanie i analiza efektywności alokacji strumieni danych w heterogenicznej sieci WBAN

  Publication

  • K. Cwalina

  - Year 2017

  W niniejszej dysertacji doktorskiej poddano dyskusji efektywność alokacji strumieni danych w heterogenicznej radiowej sieci WBAN (Wireless Body Area Networks). Biorąc pod uwagę dynamiczny rozwój nowoczesnych sieci radiokomunikacyjnych piątej generacji (5G), którego część stanowią radiowe sieci działające w obrębie ciała człowieka, bardzo ważnym aspektem są metody maksymalizujące wykorzystanie dostępnych zasobów czasowo –częstotliwościowych...

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• Sławomir Jerzy Ambroziak dr hab. inż.

  People

  Department of Radiocommunication Systems and Networks

  Sławomir J. Ambroziak was born in Poland, in 1982. He received the M.Sc., Ph.D. and D.Sc. degrees in radio communication from Gdańsk University of Technology (Gdańsk Tech), Poland, in 2008, 2013, and 2020 respectively. Since 2008 he is with the Department of Radiocommunication Systems and Networks of the Gdańsk Tech: 2008-2013 as Research Assistant, 2013-2020 as Assistant Professor, and since 2020 as Associate Professor. He is...

• PROJEKTOWANIE WIELOWYMIAROWEGO REGULATORA BACKSTEPPING W UKŁADZIE DYNAMICZNEGO POZYCJONOWANIA STATKU

  Publication

  • A. Witkowska

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2014

  W komercyjnych systemach dynamicznego pozycjonowania statku, pomimo znacznego wzrostu poziomu automatyzacji, wykorzystywane jest nadal sterowanie typu PID. Poprawę jakości procesu pozycjonowania może umożliwić wykorzystanie bardziej efektywnych algorytmów, oferujących zaawansowane nieliniowe techniki sterowania. W artykule przedstawiono zagadnienie projektowania regulatora pozycji i kursu dla układu dynamicznego pozycjonowania...

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• Pomiar odpowiedzi impulsowej kanału radiowego na obszarze morskim i przybrzeżnym

  Publication

  • J. Hajduczenia

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2017

  W artykule zaprezentowano wyniki pomiarów odpowiedzi impulsowej kanału radiowego na obszarze morskim i przybrzeżnym. Pomiary przeprowadzono na częstotliwości 1457 MHz a sygnałem sondującym był sygnał o paśmie 10 MHz z modulacją BPSK i pseudoprzypadkową zawartością binarną. Odbierane sygnały były rejestrowane przez dwie stacje ruchome, zainstalowane w samolocie i na łodzi patrolowej. Podczas późniejszej obróbki danych zastosowano...

• EMC disturbances in connection of driving system

  Publication

  • S. Witkowski
  • M. Olesz

  - Year 2003

  It is known the steep voltage changes caused by IGBT frequency inverters may cause some electromagnetic problems in driving system. Special dU/dt type as well as sinusoidal filters are used in order to limit the level of the disturbances. The paper presents investigation results of EMC disturbances in inverter supplied induction motor. Experiments have proved that disturbances in current connection differ essentially. Important...

• Spectral analysis of nonstationary low-frequency magnetic-field emissions from ship's power

  Publication

  • F. Converters
  • B. Palczynska
  • B. Pałczyńska

  - Year 2009

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• The Influence of the Radio Channel on Precision of Position Estimation of the User Terminal Using the NB-IoT Radio Interface

  Publication

  • P. Rajchowski
  • K. Cwalina
  • J. Sadowski

  - Year 2023

  In the article the method of user terminal position estimation using the broadcast signals transmitted in the downlink of the NB-IoT interface was presented, including the analysis of the radio channel influence on precision of position estimation as well as the eNodeB (Evolved Node B) synchronization. The practical ability to estimate the position in the test area has been verified in the laboratory conditions, using the reference...

  Full text to download in external service

• Jacek Stefański prof. dr hab. inż.

  People

  Faculty of Electronics, Telecommunications and Informatics, Department of Radiocommunication Systems and Networks

  JJacek Stefański received M.Sc., Ph.D. and D.Sc. degrees in telecommunications engineering from Gdansk University of Technology (GUT), Poland, in 1993, 2000 and 2012, respectively. Awarded title of Professor by the President of Poland in 2020. Currently, he works as a professor at the Department of Radio Communication Systems and Networks (DRCSN) in GUT. From 2005 to 2009, he worked as an assistant professor in the National Institute...

• Wideband Radio Direction Finder Implemented in Software Defined Radio Technology

  Publication

  • K. Cwalina
  • P. Rajchowski
  • J. Sadowski

  - Applied Mechanics and Materials - Year 2015

  In the paper a wideband radio direction finder (RDF) implemented in software defined radio (SDR) technology and the results of hardware layer research, including developed antenna switching unit (ASU), are presented. The results of tests of the devices, which are the part of the software defined radio platform (SDRP), and antenna switching unit, confirmed the possibility of using selected components in the final solution.

• Signals of the 5G Standalone Radio Interface

  Open Research Data

  open access

  • P. Rajchowski
  • J. Magiera
  • A. Czapiewska
  • S. Ambroziak
  • K. Cwalina
  • P. Skokowski
  • J. Kelner
  • K. Malon
  • K. Maślanka
  • M. Kryk

  - series: 1.0

  The research work conducted within the scope of NATO-STO (North Atlantic Treaty Organization – Science and Technology Organization) IST-187 group assumed investigation of the 5G gNodeB performance. The downlink (DL) signals of the FDD (Frequency Division Duplex) 5G-Standalone station were registered in isolated and controlled laboratory conditions....

• Disturbances of magnetic field of plane caused by eddy currents

  Publication

  • M. Wołoszyn

  - Przegląd Elektrotechniczny - Year 2010

  Results of the numerical analysis of the magnetic disturbances of a plane caused by eddy currents induced in conducting elements of the plane were presented in this paper. Magnetic disturbances of the object's model were carried out in Opera 3D.

• Transmission Quality in MC-CDMA Radio Interface with Turbo Codes

  Publication

  • A. Marczak

  - Year 2012

  Multi-Carrier Code Division Multiple Access techiques is a combination of two radio access techniques: Code Division Multiple Access (CDMA) and Orthogonal Frequency-called Division Multiplexing (OFDM) and has the advantages of both techniques. The paper presents the design of transmitter and receiver for MC-CDMA radio interface and the simulation results of the transmission quality in AWGN channel.

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• Analysis of magnetic disturbances of air platform caused by induced magnetisation

  Publication

  • M. Wołoszyn

  - Year 2009

  Magnetometric systems installed on air platforms like airplanes or helicopters are equipped in compensators of magnetic disturbances. Time changes of the platform's position caused generation of magnetic disturbances. The permanent and induced magnetization of ferromagnetic elements and eddy currents induced in conducting parts of the platform are sources of these disturbances. The linear model of magnetic disturbances of platforms...

• Blackout initial disturbances in electric Power System searching

  Publication

  • K. Wróblewska-Swarcewicz
  • Z. Lubośny

  - Year 2005

  The paper contains short survey of the blackouts that took place in the last few years. The sources and initial disturbances are discussed. The typical scenario of the disturbance, leading to blackout in the electrical power system are presented.Next, models of a power system eligible to considered topic are discussed. Finally the algorithm of the blackout initial disturbances in power system searching is presented.The consideration...

• Measuring research on radio wave propagation

  Publication

  • S. J. Ambroziak

  - Year 2010

  Telecommunication connections are increasingly based on the wireless links, both fixed and mobile, carried out under different radio systems. This kind of solution has many advantages. However, the propagation medium is a factor that causes many difficulties in designing wireless networks, because of large diversity of propagation environments. Transmission loss in each environment is determined by many variables phenomena and...

• Trunked Radio Solutions for Special Application

  Publication

  • S. Gajewski
  • M. Gajewska
  • R. Katulski

  - International Journal of Electronics and Telecommunications - Year 2014

  In the paper modern concepts of radio communication trunking-dispatch systems for special applications are presented. Basic standards of TETRA, DMR, and cdma2000 are mentioned. The aim of the paper is to present innovative trunking solutions based on the LTE system working both in FDD and TDD mode. The architecture of LTE trunked radio is shown as well as new services possible to implementation are described. The way of TETRA and...

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• Magnetic disturbances caused by magnetic contamination of plastics

  Publication

  • K. Jakubiuk
  • M. Wołoszyn
  • M. Chomnicki
  • J. Łubkowski

  - Przegląd Elektrotechniczny - Year 2015

  In the study of low magnetic fields precision magnetometers working in a differential system are used. Two optically pumped magnetometers working in a differential system allow for precise measuring of disturbances in the magnetic field. In order to attain high accuracy of magnetic field measurement, it is necessary to use appropriate materials for the construction of a magnetometric system, particularly of those located closely...

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• Automated Diagnostics of Current Pick-Up Disturbances in Electric Traction Networks

  Publication

  • M. Bartłomiejczyk
  • S. Hamacek
  • D. Kolosov
  • Y. I. Zharkov

  - Year 2014

  The present work defines the basic causes of bow disturbances of current pick-up, sets a task of establishing a system of automated control of bow disturbances at feeder zones of electric traction networks, proposes structural variants of the technical system implementation, describes the algorithm of detection of bow disturbances of current pick-up.

• Detection of impulsive disturbances in archive audio signals

  Publication

  • M. Ciołek
  • M. Niedźwiecki

  - Year 2017

  In this paper the problem of detection of impulsive disturbances in archive audio signals is considered. It is shown that semi-causal/noncausal solutions based on joint evaluation of signal prediction errors and leave-one-out signal interpolation errors, allow one to noticeably improve detection results compared to the prediction-only based solutions. The proposed approaches are evaluated on a set of clean audio signals contaminated...

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• Survey of Radio Navigation Systems

  Publication

  • P. Falkowski-Gilski
  • J. Stefański

  - International Journal of Electronics and Telecommunications - Year 2015

  At present, there is a growing demand for radio navigation systems, ranging from pedestrian navigation to consumer behavior analysis. These systems have been successfully used in many applications and have become very popular in recent years. In this paper we present a review of selected wireless positioning solutions operating in both indoor and outdoor environments. We describe different positioning techniques, methods, systems,...

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• Velocity measurement using the fdoa method in ground-based radio navigation system

  Publication

  • J. Sadowski

  - Metrology and Measurement Systems - Year 2014

  Velocity is one of the main navigation parameters of the moving objects. However some systems of position estimation using radio wave measurements cannot provide velocity data due to limitation of their performance. In this paper a velocity measurement method for DS-CDMA radio navigation system is proposed, which doesn’t require full synchronization of reference stations carrier frequencies. The article presents basics of FDOA...

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• Radio Physics and Radio Astronomy

  Journals

  ISSN: 1027-9636 , eISSN: 2415-7007

• Active feedback noise control in the presence of impulsive disturbances

  Publication

  • M. Niedźwiecki
  • M. Meller

  - Year 2015

  The problem of active feedback control of a narrowband acoustic noise in the presence of impulsive disturbances is considered. It is shown that, when integrated with appropriately designed outlier detector, the proposed earlier feedback control algorithm called SONIC is capable of isolating and rejecting noise pulses. According to our tests this guarantees stable and reliable operation of the closed-loop noise cancelling...

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• Radio programowalne - nowoczesna platforma dydaktyczna

  Publication

  • P. Falkowski-Gilski
  • J. Stefański

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2014

  Przedstawiono technologię radia programowalnego jako nowoczesną platformę dydaktyczną. Zaproponowane podejście pozwala na efektywniejsze planowanie stanowisk laboratoryjnych. Umożliwia skrócenie czasu realizacji etapów związanych z projektowaniem, symulacją i testowaniem działania łącza radiowego. Pozwala również na elastyczną zmianę stanowisk laboratoryjnych zgodnie z dynamicznym rozwojem współczesnych systemów radiokomunikacyjnych.

• Research and Analysis of High-Speed Data Transmission Radio Link Designed for Maritime Environment

  Publication

  • P. Rajchowski
  • K. Cwalina
  • P. T. Kosz
  • J. Stefański
  • J. Sadowski

  - Year 2017

  In these article, the realization of digital radio link for high-speed data transmission was presented. Its concept and practical realization, using USRP devices from National Instruments, were described. Developed software for generation and reception of digital signals in baseband, including description of modulation types, and time and frequency synchronization mechanisms, was presented. Moreover, an operation of designed radio...

• Research and analysis of high-speed data transmission radio link designed for maritime environment

  Publication

  • P. T. Kosz
  • P. Rajchowski
  • K. Cwalina
  • J. Sadowski
  • J. Stefański

  - Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne - Year 2017

  In these article the realization of digital radio link for high-speed data transmission was presented. Its concept and practical realization, using USRP devices from National Instruments, were described. Developed software for generation and reception of digital signals in baseband, including description of modulation types, and time and frequency synchronization mechanisms, was presented. Moreover, an operation of designed radio...

  Full text to download in external service

• Radio Communication Antennas and MIMO Techniques (2023/24)

  e-Learning Courses

  • J. Magiera

  Course assigned to the following subject: - Radio Communication Antennas and MIMO Techniques (profile Radio Communication Systems and Networks [EN])