Search results for: WIDE-BANDSTOP

• 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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• 4D Models in World Wide Web

  Publication

  • B. Hejmanowska
  • S. Mikrut
  • A. Strus
  • E. Glowienka
  • K. Michałowska

  - Year 2018

  The paper presents some results of research curried out within the framework of the European project named "Cultural Heritage Through Time" (CHT2). One of the main project aims were to develop a methodology for sharing multi-temporal information via the Internet (webGIS) for remote analysis of structures and landscapes over time. Reported in this paper results are focused on testing two technologies (Hexagon and Esri) for online...

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• Asynchronous Wide Area Multilateration System

  Publication

  • J. Stefański

  - AEROSPACE SCIENCE AND TECHNOLOGY - Year 2014

  A new method for a location service in the wide area multilateration (WAM) system is outlined. This method, which is called asynchronous WAM (AWAM), enables calculation of the geographical position of an aircraft without knowledge of relative time differences (RTDs) between measuring ground stations (sensors). The AWAM method is based on the measurement of round trip times (RTTs) between the aircraft and the serving ground station,...

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• Aide Soignante

  Journals

  ISSN: 1166-3413

• Wide range of properties of polyurethanes for medicine - characterization of biomaterials

  Publication

  • I. Gibas
  • H. Janik
  • L. Dini

  - Year 2010

  W artykule opisano różnorodność poliuretanów stosowanych na polu biomedycznym. Wyrózniono mtody otrzymywania materiałów o róznych własciwościach, a tym samym zastosowaniach. Opisano 10 serii potrzymanych PU oraz wyniki charakterystyki fizycznej, powierzchniowej i biologicznej tych poliuretanów.

• Azimuth estimator for a rotating array radar with wide beam

  Publication

  • M. Meller
  • K. Stawiarski
  • B. Pikacz

  - Year 2017

  The problem of estimating azimuth in rotating array radar with a beam, wide in the azimuth plane, is considered. Under such setup the echo signal usually has a very low signal to noise ratio, but the number of observations is large, because of long dwell times. The proposed solution is based on the maximum likelihood approach, but it employs simplifications which facilitate its implementation in real time systems. Results, obtained...

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• TDOA versus ATDOA for wide area multilateration system

  Publication

  • J. Stefański
  • J. Sadowski

  - EURASIP Journal on Wireless Communications and Networking - Year 2018

  This paper outlines a new method of a location service (LCS) in the asynchronous wireless networks (AWNs) where the nodes (base stations) operate asynchronously in relation to one another. This method, called asynchronous time difference of arrival (ATDOA), enables the calculation of the position of the mobile object (MO) through the measurements taken by a set of non-synchronized fixed nodes and is based on the measurement of...

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• Problem of selection of reference plane with deep and wide valleys analysis

  Publication

  • P. Podulka

  - Journal of Physics : Conference Series - Year 2018

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• A Broadband Circularly Polarized Wide-Slot Antenna with a Miniaturized Footprint

  Publication

  • U. Ullah
  • S. Kozieł

  - IEEE Antennas and Wireless Propagation Letters - Year 2018

  This letter presents a novel and simple feeding technique for exciting orthogonal components in a wide-slot antenna. In this technique, a rectangular bracket-shape parasitic strip is placed at the open end of the straight microstrip line to excite the fundamental horizontal and vertical components of the circular polarization (CP). The proposed technique—when employed in conjunction with the asymmetrical geometry of coplanar waveguide...

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• Journal of Wine Economics

  Journals

  ISSN: 1931-4361 , eISSN: 1931-437X