Method of indemnification phase noises the system PLL of frequency
Journal Title: Телекомунікаційні та інформаційні технології - Year 2017, Vol 103, Issue 2
Abstract
Digital systems PLL frequency widely and effectively are used in the synthesizers of frequencies the modern radiotechnical systems (mobile, satellite and trunking communication and also in the perspective military radiotechnical complexes of the different setting (Air Force, Navy military), for the construction sources vibrations, which satisfy to the whole complex of requirements, which include requirements to time of alteration, stability of frequency and level phase noises. The large number of publications is sanctified to research and calculation of phase noises submachines systems PLL. But articles in which the detailed analysis noises of phase detector are provided, which are the submachines the digital systems PLL synthesizers of frequencies practically absent, although a basic contribution is to the spectrum phase noise of initial oscillation the system PLL, the deposit noises of phase detector prevails. As known from the theory the systems PLL influence of noises, which arises up in the consequence work of phase detector, depends on local properties of discriminatory descriptions, in particular, from the local steepness of discriminatory description of phase detector in the point stationary mode of synchronism. The presence such distortions substantially influences on noise and dynamic descriptions the system PLL. In the article results of analysis and principles construction the system PLL of frequency depending on the set requirements level of phase noises the system are considered. The presented results show by itself the method of indemnification phase noises the system PLL of frequency in the perspective radiotechnical complexes of the special setting.
Authors and Affiliations
Yevhen Lebid, Robert Bieliakov, Andrii Shyshatskyi
Keywords
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