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design of higher-performance cmos voltage controlled oscillators (in English)
Harjani,Liang Dai (Author)
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design of higher-performance cmos voltage controlled oscillators (in English) - harjani,liang dai
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Synopsis "design of higher-performance cmos voltage controlled oscillators (in English)"
voltage-controlled oscillators (vcos) with low phase noise are the most critical building block in high performance phase-locked loops (pll). design of high-performance cmos voltage-controlled oscillators presents a phase noise modeling framework for cmos ring oscillators. the analysis considers both linear and nonlinear operation. it indicates that fast rail-to-rail switching has to be achieved to minimize phase noise. additionally, in conventional design the flicker noise in the bias circuit can potentially dominate the phase noise at low offset frequencies. therefore, for narrow bandwidth plls, noise up conversion for the bias circuits should be minimized. we define the effective q factor (qeff) for ring oscillators and predict its increase for cmos processes with smaller feature sizes. our phase noise analysis is validated via simulation and measurement results.the digital switching noise coupled through the power supply and substrate is usually the dominant source of clock jitter. improving the supply and substrate noise immunity of a pll is a challenging job in hostile environments such as a microprocessor chip where millions of digital gates are present. design of high-performance cmos voltage-controlled oscillators noise, analyzes the impact of the supply and substrate noise on the oscillator phase noise, and suggests techniques for reducing the jitter due to the supply and substrate noise.the primary audience for design of high-performance cmos voltage-controlled oscillators is research workers and design engineers who concentrate on high performance communication circuits. this work will also be of interest to analog circuit designers.
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The book is written in English.
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