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Amplitude Response Curves of Frequency-Locked Rotations Yoshihiko SUSUKI Yoshisuke UEDA Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.10 pp.2250-2252 Publication Date: 2007/10/01 Online ISSN: 1745-1337 DOI: 10.1093/ietfec/e90-a.10.2250 Print ISSN: 0916-8508 Type of Manuscript: Special Section LETTER (Special Section on Nonlinear Theory and its Applications) Category: Nonlinear Phenomena and Analysis Keyword: phase-locked loop, frequency entrainment, rotation, response curve, Full Text: PDF(255.6KB)>>
Summary: This letter studies frequency-locked rotations in a phase-locked loop (PLL) circuit as FM demodulator. A rotation represents a desynchronized steady state in the PLL circuit and is regarded as another type of self-excited oscillations with natural rotation frequencies. The rotation frequency can be locked at driving frequencies of modulation signals. This letter shows response curves for harmonic amplitude of frequency-locked rotations. They have several different features from response curves of van der Pol oscillator. | ||||||||||
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