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Wyszukujesz frazę "Zielinski, R." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Measurements of shielding effectiveness of textile materials containing metal by the free-space transmission technique with data processing in the time domain
    Autorzy:
    Dvurechenskaya, N.
    Bajurko, P. R.
    Zieliński, R. J.
    Yashchyshyn, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/221789.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    textiles
    shielding effectiveness
    free-space transmission technique
    time-domain gating
    Opis:
    The results of shielding effectiveness (SE) measurements of textile materials containing metal by the free-space transmission technique (FSTT) in the 1-26.5 GHz frequency range are presented in the paper. It is shown that experimental data processing using time-domain gating (TDG) makes it possible to effectively remove diffracted and reflected components from the desired signal. The comparison with the results obtained by other techniques, namely modified FSTT with TDG and coaxial line probe technique (ASTM D4935-99) is given. The comparison shows that the proposed technique gives more reasonable results while the measurement set-up is simpler in realization.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 2; 217-228
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Interpolators Used for Time-Interval Measurement Systems Based on Multiple-Tapped Delay Line
    Autorzy:
    Chaberski, D.
    Frankowski, R.
    Gurski, M.
    Zieliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221043.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    time interval
    multiple-tapped delay line
    quantization-and-nonlinearity minimization
    FPGA
    time-to-digital converter
    Opis:
    The paper describes the construction, operation and test results of three most popular interpolators from a viewpoint of time-interval (TI) measurement systems consisting of many tapped-delay lines (TDLs) and registering pulses of a wide-range changeable intensity. The comparison criteria include the maximum intensity of registered time stamps (TSs), the dependency of interpolator characteristic on the registered TSs’ intensity, the need of using either two counters or a mutually-complementing pair counter-register for extending a measurement range, the need of calculating offsets between TDL inputs and the dependency of a resolution increase on the number of used TDL segments. This work also contains conclusions about a range of applications, usefulness and methods of employing each described TI interpolator. The presented experimental results bring new facts that can be used by the designers who implement precise time delays in the field-programmable gate arrays (FPGA).
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 2; 401-412
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A High-Speed Fully Digital Phase-Synchronizer Implemented in a Field Programmable Gate Array Device
    Autorzy:
    Frankowski, R.
    Chaberski, D.
    Kowalski, M.
    Zieliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/221125.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phase synchronizer
    delay line
    coincidence counting
    quantum information
    time interval measurement
    time-to-digital converters
    field programmable gate array (FPGA)
    Opis:
    Most systems used in quantum physics experiments require the efficient and simultaneous recording different multi-photon coincidence detection events. In such experiments, the single-photon gated counting systems can be applicable. The main sources of errors in these systems are both instability of the clock source and their imperfect synchronization with the excitation source. Below, we propose a solution for improvement of the metrological parameters of such measuring systems. Thus, we designed a novel integrated circuit dedicated to registration of signals from a photon number resolving detectors including a phase synchronizer module. This paper presents the architecture of a high-resolution (~60 ps) digital phase synchronizer module cooperating with a multi-channel coincidence counter. The main characteristic feature of the presented system is its ability to fast synchronization (requiring only one clock period) with the measuring process. Therefore, it is designed to work with various excitation sources of a very wide frequency range. Implementation of the phase synchronizer module in an FPGA device enabled to reduce the synchronization error value from 2.857 ns to 214.8 ps.
    Źródło:
    Metrology and Measurement Systems; 2017, 24, 3; 537-550
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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