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Full nonlinear analysis of near‐carrier noise in discriminator‐stabilized microwave oscillators
Author(s) -
Rizzoli Vittorio,
Mastri Franco,
Masotti Diego,
Neri Andrea
Publication year - 1993
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650061613
Subject(s) - phase noise , discriminator , noise (video) , jitter , electronic engineering , harmonic balance , oscillator phase noise , noise generator , noise temperature , flicker noise , nonlinear system , topology (electrical circuits) , computer science , physics , acoustics , noise figure , engineering , electrical engineering , telecommunications , detector , amplifier , cmos , quantum mechanics , artificial intelligence , image (mathematics)
The Letter demonstrates the application of modern nonlinear CAD techniques based on the harmonic‐balance method to the computation of near‐carrier noise in microwave oscillators stabilized by a discriminator‐based feedback loop. Oscillator noise is described as being generated by two basic mechanisms: a fundamental‐frequency jitter due to noise‐induced frequency modulation of the carrier, and a phase jitter due to the superposition on the carrier of upper and lower noise sidebands generated by frequency conversion in the nonlinear devices. The numerical analysis is fully general purpose and can be applied to oscillator topologies of arbitrary complexity in a straightforward way. The simulation technique is applied to an ultra‐low‐noise discriminator‐stabilized dielectric‐resonator oscillator, and is shown to exactly predict the measured noise performance of the real circuit.