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Journal Radioengineering №10 for 2013 г.
Article in number:
Oscillator phase noise figure and its application in low-noise signal source design
Keywords: microwave oscillator phase noise figure power spectral density PM noise
Authors:
А.А. Perfilyev - Ph.D. (Eng.), National Research University "MPEI". E-mail: perf@bk.ru
Abstract:
Oscillator phase noise figure (PNF) definition was suggested. It is defined as ratio of total PM noise power spectral density (PSD) to it-s part caused by thermal noise of the oscillator resonant circuit. For microwave BJT Clapp oscillator a PNF minimal level dependence on the ratio of oscillation frequency to the BJT transition frequency has been calculated. A simple formula for estimation of BJT oscillator minimal PM noise PSD using PNF, loaded Q-factor and oscillations power is offered.
Pages: 48-50
References

  1. Lison D. Prostaya model' spektra shuma generatora s obratnoj svyaz'yu // TIIE'R. 1966. T. 54. № 2.
  2. Kuleshov V.N. Poligarmonicheskij analiz fluktuaczij v avtogeneratorax // Radiotexnika. 1989. T. 44. № 12.
  3. Kuleshov V.N., Boldy'reva T.I., Perfil'ev A.A. Raschyot fluk­tuaczij amplitudy' i fazy' v avtogeneratorax, upravlyaemy'x napryazheniem // E'lektrosvyaz'. 2005. № 6.