Wyniki wyszukiwania dla: HIGH-FREQUENCY%20DESIGN

• Tinnitus Therapy Based on High-Frequency Linearization

  Publikacja

  • T. Poremski
  • B. Kostek

  - Rok 2011

  The aim of this work was to present problems related to tinnitus symptoms, its pathogenesis, hypotheses on tinnitus causes, and therapy treatments to reduce or mask the phantom noise. In addition, the hypothesis on the existence of parasitic quantization that accompanies hearing loss was recalled. The paper contains a description of experiments carried out with the application of high-frequency dither having specially formed spectral...

• High Frequency Harmonics Emission in Smart Grids

  Publikacja

  • J. Łuszcz

  - Rok 2013

  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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• Modelling of high frequency dynamic responses of engineering structures

  Publikacja

  • A. Żak
  • M. Krawczuk
  • G. Redlarski
  • W. Waszkowiak

  - Rok 2017

  Modelling of high frequency dynamic responses of engineering structures, especially those related to wave propagation, is a real numerical challenge. Nowadays most of numerical models, used for that purpose, are based on the application of various finite element techniques. However, finite element discrete models may also be considered as possessing certain periodic structures, which may manifest themselves in particular scenarios....

• Performance-Driven Surrogate Modeling of High-Frequency Structures

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - Rok 2020

  The development of modern high-frequency structures, including microwave and antenna components, heavily relies on full-wave electromagnetic (EM) simulation models. Notwithstanding, EM-driven design entails considerable computational expenses. This is especially troublesome when solving tasks that require massive EM analyzes, parametric optimization and uncertainty quantification be-ing representative examples. The employment of...

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• Interictal high-frequency oscillations in focal human epilepsy

  Publikacja

  • J. Cymbalnik
  • M. T. Kucewicz
  • G. A. Worrell

  - CURRENT OPINION IN NEUROLOGY - Rok 2016

  PURPOSE OF REVIEW: Localization of focal epileptic brain is critical for successful epilepsy surgery and focal brain stimulation. Despite significant progress, roughly half of all patients undergoing focal surgical resection, and most patients receiving focal electrical stimulation, are not seizure free. There is intense interest in high-frequency oscillations (HFOs) recorded with intracranial electroencephalography as potential...

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• Integrated controller for ultra high frequency technique laboratory

  Publikacja

  • K. Bizewski
  • M. Rzymowski
  • P. Woźnica

  - Rok 2012

  Department of Microwave and Antenna Engineering decided to modernize the laboratory of Ultra High Frequency Techniques. The main change was to replace measurement of the field distribution inside rectangular waveguides by analysing the fields around striplines. This involved the need to overcome several technical and conceptual problems. Precise positioning of the probe and reading the field distribution near the stripline is important...

• Impulse and high frequency methods of lighting earthing testes.

  Publikacja

  • S. Wojtas

  - Rok 2003

  Uziemienia projektowane dla prądów zwarciowych nie zawsze są właściwe do odprowadzania prądów piorunowych, gdzie należy brać pod uwagę impedancję uziemień. W pracy porównano metody: udarową oraz wysokiej częstotliwości zastosowane do oceny przydatności uziemień odgromowych.

• New high-gain step-up DC/DC converter with high-frequency isolation

  Publikacja

  • D. Vinnikov
  • J. Zakis
  • O. Husev
  • R. Strzelecki

  - Rok 2012

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• Formation of high-carbon abrasion-resistant surface layers when high-energy heating by high-frequency currents

  Publikacja

  • N. Plotnikova
  • V. Skeeba
  • N. Martyushev
  • R. Miller
  • N. Rubtsova

  - IOP Conference Series: Materials Science and Engineering - Rok 2016

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• High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters: Sources and Propagation Paths

  Publikacja

  • J. Łuszcz

  - Rok 2018

  Provides a concise and thorough reference for designing electrical and electronic systems that employ adjustable speed drives Electrical and electronic systems that employ adjustable speed drives are being increasingly used in present-day automation applications. They are considered by many application engineers as one of the most interfering components, especially in a contemporarily faced industrial environment. This book fills...

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