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    Wyświetlanie 1-3 z 3
    Tytuł:
    A Computer-controlled System of High-power Microwave Sources
    Autorzy:
    Korpas, P.
    Gryglewski, D.
    Wojtasiak, W.
    Gwarek, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/226529.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SiC
    GaN
    high power amplifier
    PLL synthesizer
    microwave sources
    Opis:
    The paper presents the design and hardware implementation of a computer controlled system composed of up to four high-power microwave sources. Each source provides up to 200 W of continuous wave power. Frequency of each source is stabilized within ±0.5 ppm of the nominal frequency adjustable within 2.35÷2.6 GHz range. All four sources can be synchronized to the same frequency with computer-controlled phase shift between the signals generated by each of them. The paper concentrates on the choice of components for such a system and the properties of the realized hardware implementation.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 1; 121-126
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TEm,1 coaxial modes generator for cold-testing of high power components and devices
    Autorzy:
    Jaworski, Grzegorz
    Francik, Andrzej
    Nowak, Kacper
    Powiązania:
    https://bibliotekanauki.pl/articles/2173659.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cold testing
    high power components
    microwave path
    mode generator
    test na zimno
    komponent o dużej mocy
    ścieżka mikrofalowa
    generator trybów
    Opis:
    In this paper, we describe the development and design procedure of the new kind of coaxial TEm,1 modes generator based on ring resonator with coupling apertures. The generator enables excitation of subsequent TEm,1 modes in a cylindrical waveguide. The proposed design method allows to obtain high purity TEm,1 modes. The angular mode number can be chosen by replacing the plate with coupling apertures. Structure and parameters of the generator was optimized using CST-Microwave Studio. The mode generator was fabricated and checked on the test bench in an anechoic chamber. The measured field distributions confirm excitation of the desired TEm,1 modes. A good agreement between simulations and measurements is obtained. The presented mode generator, operating in non-rotating TEm,1 modes, is easy to fabricate, and suitable for cold-test experiments of high power components and devices.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 2; art. no. e140467
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    International Linear Collider Global and Local Implications
    Autorzy:
    Romaniuk, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/226596.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ILC
    ILC-GDE
    LCC
    SRF
    accelerators
    particle colliders
    linacs
    superconductivity
    high energy physics experiments
    elementary particles
    hadrons
    electron beams
    positron beams
    microwave resonant cavities
    high power 1,3 GHz systems
    superconducting RF electronics
    Opis:
    ILC machine–International Liner Collider, is one of two accelerators e+e-just under design and advanced consideration to be built with final energy of colliding electron and positron beams over 1 TeV. An alternative project to ILC is CLIC in CERN The ILC machine is an important complementary addition for the research potential of the LHC accelerator complex. The required length of ILC is minimally 30 km, but some versions of the TDR estimates mention nearly 50km. Superconducting RF linacs will be built using well established 1,3 GHz TESLA technology using ultrapure niobium or Nb3Sn resonant microwave cavities of RRR class, of ultimate finesse, working with gradients over 35MV/m, while some versions of the design mention ultimate confinement as high as 50MV/m. Several teams from Poland (Kraków. Warszawa, Wrocław – IFJ-PAN, AGH, UJ, NCBJ, UW, PW, PWr, INT-PAN) participate in the global design effort for this machine – including detectors, cryogenics, and SRF systems. Now it seems that the ILC machine will be built in Japan, during the period of 2016-2026. If true, Japan will turn to a world super-power in accelerator technology no.3 after CERN and USA. The paper summarizes the state-of-the-art of technical and administration activities around the immense ILC and CLIC machines, with emphasis on potential participation of Polish teams in the global effort of newly established LCC –The Linear Collider Consortium.
    Źródło:
    International Journal of Electronics and Telecommunications; 2014, 60, 2; 181-185
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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