Search results for: WIDE STOP-BAND

• Design of Highly Selective Dual Band Band Stop Filter using Dual-Path Step Impedance Resonator

  Publication

  • A. Rehman
  • M. Abdul
  • N. Aziz
  • B. Mushtaq
  • M. Jamshed
  • S. Khalid
  • A. Zubair

  - Pakistan Journal of Engineering and Technology - Year 2022

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• Improved selectivity compact band-stop filter with gosper fractal-shaped defected ground structures

  Publication

  • M. Śmierzchalski
  • P. Kurgan
  • M. Kitliński

  - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS - Year 2010

  A novel band-stop filter using Gosper fractal-shaped defected ground structures has been designed and manufactured. The improvement in the filter selectivity has been achieved by introducing a multiresonance fractal-shaped defect leading to a higher filter order, simultaneously maintaining its compact size. The experimental results prove the validity of proposed solution and its utility in novel miniaturized and severe requirement...

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• Person Tracking in a Ferry Environment Using Ultra-Wide Band Radio Interface

  Publication

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

  - Year 2019

  This article presents research and analysis of effectiveness of tracking moving people in an environment of passenger ferry, using measurements of propagation time of ultra-wide band radio signal (UWB - Ultra-Wide Band). Constructed measurement stand and results of measurements carried out in a real propagation conditions were shortly discussed.

• Dipolowe anteny planarne do zastosowań w standardzie Ultra-Wide band

  Publication

  • M. Pergoł
  • W. Zieniutycz

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2007

  W pracy dokonano przeglądu dipolowych anten planarnych projektowanych dla standardu UWB. Przedstawiono przykładowe promienniki oraz symetryzatory szerokopasmowe, które składają sie na antenę dipolową. porównano dopasowania anten dla wybranych kształtów promienników.

• Wide-band modulation and adaptive equalization techniques for fast and reliable underwater data transmission.

  Publication

  • I. Kochańska
  • H. Lasota
  • R. Salamon

  - Year 2005

  Szybkość transmisji w płytkim kanale podwodnym jest ograniczona ze względu na wielokrotne odbicia fal dźwiękowych oraz niestacjonarność kanału. Dla zapewnienia szybkiej i niezawodnej transmisji danych w systemach komunikacji stosowane są złożone techniki modulacji oraz equalizacji kanału. W artykule zaproponowano zastosowanie modulacji OFDM oraz equalizacji adaptacyjnej w systemie komunikacji podwodnej. Modulacja OFDM stosowana...

• Novel Versatile Topologies and Design Optimization of Wide-Bandstop Frequency Selective Surfaces for X-Band, Ku-Band and Millimeter-Wave Applications

  Publication

  • R. Aziz
  • S. Kozieł
  • L. Leifsson
  • S. Szczepański

  - Scientific Reports - Year 2023

  Novel designs of frequency selective surface (FSS) are presented for wideband applications in X, Ku and mmWave (millimeter Wave) bands. Two identical metallic layers of FSS are imprinted on both sides of the RO4003 substrate. The geometry parameters are optimized to maximize the bandstop at the specified in-band maximum transmission level of –10 dB; satisfaction of the latter condition is enforced through appropriate formulation...

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• An Off-Body Narrowband and Ultra-Wide Band Channel Model for Body Area Networks in a Ferry Environment

  Publication

  • K. Cwalina
  • S. J. Ambroziak
  • P. Rajchowski

  - Year 2018

  In the article an off-body narrowband and ultra-wide band channel model for Body Area Networks in a ferry environment is described. A mobile, heterogeneous measurement stand, that consists of three types of devices: miniaturized mobile nodes, stationary reference nodes and a data acquisition server was developed. A detailed analysis of both radio channels parameters in untypical indoor environment was carried out. An analysis of...

• An Off-Body Narrowband and Ultra-Wide Band Channel Model for Body Area Networks in a Ferryboat Environment

  Publication

  • K. Cwalina
  • S. J. Ambroziak
  • P. Rajchowski

  - Applied Sciences-Basel - Year 2018

  In the article an off-body narrowband and ultra-wide band channel model for body area networks in a ferryboat environment is described. Considering the limited number of publications there is a need to develop an off-body channel model, which will facilitate the design of radio links, both from the multimedia services provider and the security point of view, for body area networks in this atypical environment. A mobile heterogeneous...

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• Person Tracking in Ultra-Wide Band Hybrid Localization System Using Reduced Number of Reference Nodes

  Publication

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

  - SENSORS - Year 2020

  In this article a novel method of positional data integration in an indoor hybrid localization system combining inertial navigation with radio distance measurements is presented. A point of interest is the situation when the positional data and the radio distance measurements are obtained from less than thee reference nodes and it is impossible to unambiguously localize the moving person due to undetermined set of positional equations....

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• Toward Wide-Band High-Resolution Analog-to-Digital Converters Using Hybrid Filter Bank Architecture

  Publication

  • B. Szlachetko

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Year 2016

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