1. Periodic Small Signal Analysis of a Wide Class of Type-II Phase Locked Loops Through an Exhaustive Variational Model.
- Author
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Bizzarri, Federico, Brambilla, Angelo, and Gajani, Giancarlo Storti
- Subjects
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PHASE-locked loops , *VOLTAGE-controlled oscillators , *MATHEMATICAL models , *TRAJECTORY optimization , *VECTOR analysis , *INTEGRATED circuits , *FREQUENCY discriminators - Abstract
Phase-locked loops are important building blocks for several different applications. Modern design and implementation of these circuits is largely advantaged by a mixed analog/digital simulation approach since phase locked loops are stiff systems and a full analog representation is in general too large to simulate in reasonable time. Even though current algorithms, based on a mixed analog/digital representation, lead to models characterized by outstanding properties, they do not allow efficient simulations of important periodic and small signal features such as modulation/demodulation or noise effects. In this paper a novel, reliable and efficient method is proposed that overcomes those limitations and makes possible to evaluate both modulation/demodulation and noise effects in the widely adopted class of type-II phase-locked loop circuits based on a digital three-state phase-frequency detector . [ABSTRACT FROM AUTHOR]
- Published
- 2012
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