Wyniki wyszukiwania dla: nob suppression

• JOURNAL OF NON-CRYSTALLINE SOLIDS

  Czasopisma

  ISSN: 0022-3093 , eISSN: 1873-4812

• Optimization of active circuits for substrate noise suppression

  Publikacja

  • G. Blakiewicz
  • M. Chrzanowska-Jeske

  - Rok 2008

  Zakłócenia generowane przez szybkie podukłady cyfrowe w mieszanych systemach analogowo-cyfrowych realizowanych na wspólnym podłożu stają się dużym problemem. W pracy zaproponowano metodę optymalizacji aktywnych układów tłumienia zakłóceń. Zilustrowano skuteczność działania metody na wybranym układzie i uzyskano ponad 9 dB poprawę tłumienia zakłóceń na częstotliwości 1GHz w porównaniu do znanych rozwiązań.

  Pełny tekst do pobrania w serwisie zewnętrznym

• Mutual Clutter Suppression Techniques for FM Sonars

  Publikacja

  • J. Marszal
  • M. Rudnicki
  • A. Jedel
  • R. Salamon
  • I. Kochańska

  - Archives of Acoustics - Rok 2016

  The article presents methods that help in the elimination of mutual clutter as well as the consequences of two FM sounding signal sonars operating in the same body of water and frequency band. An in-depth analysis of mutual clutter was carried out. The effects of sounding signal differentiation were determined, as was the Doppler effect on mutual clutter suppression. One of the methods analysed is of particular interest in a situation...

  Pełny tekst do pobrania w portalu

• Active Suppression of Nonstationary Narrowband Acoustic Disturbances

  Publikacja

  • M. Niedźwiecki
  • M. Meller

  - Rok 2021

  In this chapter, a new approach to active narrowband noise control is presented. Narrowband acoustic noise may be generated, among others, by rotating parts of electro-mechanical devices, such as motors, turbines, compressors, or fans. Active noise control involves the generation of “antinoise”, i.e., the generation of a sound that has the same amplitude, but the opposite phase, as the unwanted noise, which causes them to interfere...

  Pełny tekst do pobrania w portalu

• Narrowband interference suppression in IEEE 802.15.4a ultrawideband receiver

  Publikacja

  • J. Sadowski
  • R. Katulski

  - Rok 2008

  W referacie przedstawiono metodę redukcji wpływu silnych sygnałów wąskopasmowych na jakość transmisji ultraszerokopasmowej w standardzie IEEE 802.15.4a poprzez modyfikację sekwencji impulsów w odbiorniku korelacyjnym. Opisano strukturę rozpatrywanego odbiornika i sposób tworzenia zmodyfikowanych sekwencji wzorcowych, a także przedstawiono wyniki symulacji komputerowych jakości pracy łącza UWB w obecności zakłóceń o charakterze...

• Field-induced suppression of charge density wave in GdNiC2

  Publikacja

  • K. Kolincio
  • K. Górnicka
  • M. J. Winiarski
  • J. Strychalska-Nowak
  • T. Klimczuk

  - PHYSICAL REVIEW B - Rok 2016

  We report the specific heat, magnetic, magnetotransport, and galvanomagnetic properties of polycrystalline GdNiC 2 . In the intermediate temperature region above T N = 20 K, we observe large negative magnetoresistance due to Zeeman splitting of the electronic bands and partial destruction of a charge density wave ground state. Our magnetoresistance and Hall measurements show that at low temperatures a magnetic field-induced transformation from...

  Pełny tekst do pobrania w portalu

• Highly porous nanoberyllium for X-ray beam speckle suppression

  Publikacja

  • A. Goikhman
  • I. Lyatun
  • P. Ershov
  • I. Snigireva
  • P. Wojda
  • V. Gorlevsky
  • A. Semenov
  • M. Sheverdyaev
  • V. Koletskiy
  • A. Snigirev

  - JOURNAL OF SYNCHROTRON RADIATION - Rok 2015

  The speckle suppressor device containing highly porous nanoberyllium is proposed for manipulating with the spatial coherence length and removing undesirable speckle structure during the imaging experiments. We report a special device called the speckle suppressor, which contains the highly porous nanoberyllium plate, compacted from both sides by two beryllium windows. By insertion the speckle suppressor in the X-ray beam it allows...

  Pełny tekst do pobrania w portalu

• A CMRC-based compact rat-race coupler with harmonic suppression

  Publikacja

  • A. Bekasiewicz
  • P. Kurgan

  - Rok 2013

  In this paper, an eective miniaturization technique exploiting compact microstrip resonant cells has been discussed and experimentally validated on the basis of a 3-dB microstrip rat-race coupler. The application of the method proposed has resulted in 91 % circuit area reduction in comparison to a conventional rat-race coupler. Experimental results show good agreement with theoretical characteristics, as well as an additional eect,...

• S-Shaped Suppression of the Superconducting Transition Temperature in Cu-Intercalated NbSe2

  Publikacja

  • H. Luo
  • J. Strychalska-Nowak
  • J. Li
  • J. Tao
  • T. Klimczuk
  • R. J. Cava

  - CHEMISTRY OF MATERIALS - Rok 2017

  2H-NbSe2 is the prototype and most frequently studied of the well-known transition metal dichalcogenide (TMDC) superconductors. As 2H-NbSe2 is widely acknowledged as a conventional superconductor, its transition temperature to the superconducting state (Tc) is 7.3 K, a Tc that is substantially higher than those seen for the majority of TMDCs, where Tc values between 2 and 4 K are the norm. Here we report the intercalation of Cu...

  Pełny tekst do pobrania w portalu

• Suppression of distortions in signals received from Doppler sensor for vehicle speed measurement

  Publikacja

  • G. Szwoch

  - Rok 2018

  Doppler sensors are commonly used for movement detection and speed measurement. However, electromagnetic interference and imperfections in sensor construction result in degradation of the signal to noise ratio. As a result, detection of signals reflected from moving objects becomes problematic. The paper proposes an algorithm for reduction of distortions and noise in the signal received from a simple, dual-channel type of a Doppler...

  Pełny tekst do pobrania w portalu