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    Wyświetlanie 1-4 z 4
    Tytuł:
    SPAD timing jitter modeling using Fourier series
    Autorzy:
    Eyvazi, Kaveh
    Karami, Mohammad Azim
    Powiązania:
    https://bibliotekanauki.pl/articles/27310093.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    analytical model
    Fourier series
    multiplication time
    timing jitter
    Opis:
    In this paper, a simple analytical model for the Gaussian’s peak response part of the timing jitter of single photon avalanche diodes (SPADs) is proposed using Fourier series in the multiplication time calculation. The multiplication time characterizes avalanche multiplication process speed in which low multiplication time suggests a swifter response time and a higher avalanche speed. This paper presents an analytical solution which results in a more accurate multiplication time. The model is verified for SPADs implemented in 0.15 and 0.18 μm standard CMOS process, and the accuracy of the proposed analytical method in full-width at half-maximum (FWHM) calculation is improved by 25% and 5% with respect to the numerical model, respectively.
    Źródło:
    Optica Applicata; 2023, 53, 2; 239--248
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    AMC timing receiver and clock synthesizer module for the LLRF system
    Autorzy:
    Czuba, K.
    Bou Habib, S.
    Sikora, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/398053.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    zegary
    pętle fazowe
    jitter na synchronizację czasową
    clocks
    phase locked loops
    timing jitter
    ATCA
    Opis:
    The new LLRF system architecture based on the ATCA platform was developed and tested at FLASH. The LLRF system require generation of highly stable clock and trigger signals for high precision data processing and synchronous system operation. This paper describes the conception, design and performance test results of the updated AMC module designed to fulfill the LLRF system timing synchronization needs. This module contains three independent clock synthesizers that are able to generate LVDS clock signals in the range of 10 MHz to 100 MHz. These signals are transmitted over the AMC connector and can be distributed over the entire ATCA crate.The clock synthesizers can be synchronized either by an internal quartz oscillator or an external phase reference signal provided to the board either via the AMC edge connector or via a front panel socket. This assures flexibility when using the board for tests and for the LLRF system operation. Besides clock synthesizers the AMC card contains also an optical receiver suited to convert and decode FLASH timing signals distributed in the FLASH accelerator system.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2010, 1, 2; 125-130
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Testing Time and Frequency Fiber-Optic Link Transfer by Hardware Emulation of Acoustic-Band Optical Noise
    Autorzy:
    Lipiński, M.
    Krehlik, P.
    Śliwczyński, Ł.
    Buczek, Ł.
    Kołodziej, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/221890.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Time and Frequency fiber-optic transfer
    phase noise in optical fiber
    timing jitter
    fiber-optic transmission
    Opis:
    The low-frequency optical-signal phase noise induced by mechanical vibration of the base occurs in field-deployed fibers. Typical telecommunication data transfer is insensitive to this type of noise but the phenomenon may influence links dedicated to precise Time and Frequency (T&F) fiber-optic transfer that exploit the idea of stabilization of phase or propagation delay of the link. To measure effectiveness of suppression of acoustic noise in such a link, a dedicated measurement setup is necessary. The setup should enable to introduce a low-frequency phase corruption to the optical signal in a controllable way. In the paper, a concept of a setup in which the mechanically induced acoustic-band optical signal phase corruption is described and its own features and measured parameters are presented. Next, the experimental measurement results of the T&F transfer TFTS-2 system’s immunity as a function of the fibre-optic length vs. the acoustic-band noise are presented. Then, the dependency of the system immunity on the location of a noise source along the link is also pointed out.
    Źródło:
    Metrology and Measurement Systems; 2016, 23, 2; 309-316
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jitter generation model based on timing modulation and cross point calibration for jitter decomposition
    Autorzy:
    Ren, Nan
    Fu, Zaiming
    Lei, Shengcu
    Liu, Hanglin
    Tian, Shulin
    Powiązania:
    https://bibliotekanauki.pl/articles/1848967.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    jitter decomposition
    jitter generation
    cross-point calibration
    timing modulation
    deterministic jitter
    random jitter
    Opis:
    High-speed serial standards are rapidly developing, and with a requirement for effective compliance and characterization measurement methods. Jitter decomposition consists in troubleshooting steps based on jitter components from decomposition results. In order to verify algorithms with different deterministic jitter (DJ) in actual circuits, jitter generation model by cross-point calibration and timing modulation for jitter decomposition is presented in this paper. The generated jitter is pre-processed by cross-point calibration which improves the accuracy of jitter generation. Precisely controllable DJ and random jitter (RJ) are generated by timing modulation such as data-dependent jitter (DDJ), duty cycle distortion (DCD), bounded uncorrelated jitter (BUJ), and period jitter (PJ). The benefit of the cross-point calibration was verified by comparing generation of controllable jitter with and without cross-point calibration. The accuracy and advantage of the proposed method were demonstrated by comparing with the method of jitter generation by analog modulation. Then, the validity of the proposed method was demonstrated by hardware experiments where the jitter frequency had an accuracy of ±20 ppm, the jitter amplitude ranged from 10 ps to 8.33 ns, a step of 2 ps or 10 ps, and jitter amplitude was independent of jitter frequency and data rate.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 1; 123-143
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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