$Techniques for fractional-N phase locked loops$

Techniques for fractional-N phase locked loops

Embodiments describe techniques for utilizing fractional-N phase locked loops (PLL). Some embodiments describe a fractional-divider based fractional-N PLL for a spread spectrum clock (SSC) generator that utilizes phase average techniques to suppress phase interpolator nonlinearity. Some embodiments...

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Hauptverfasser:	Zhou Kai, Cao Shengguo, Shen Yu, Wu Zhi, Chu Fangquing, Yue Lingfen, Luo Kexin
Format:	Patent
Sprache:	eng
Schlagworte:	AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY CALCULATING CODE CONVERSION IN GENERAL CODING COMPUTING COUNTING DECODING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS
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Beschreibung
Zusammenfassung:	Embodiments describe techniques for utilizing fractional-N phase locked loops (PLL). Some embodiments describe a fractional-divider based fractional-N PLL for a spread spectrum clock (SSC) generator that utilizes phase average techniques to suppress phase interpolator nonlinearity. Some embodiments describe a fractional-N PLL based on fractional dividers with hybrid finite impulse response (FIR) filtering. Some embodiments describe a small size and low power divider for a hybrid FIR fractional-N PLL.