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Modulated Frequency Synthesizers: Design for Wideband and High Efficiency Modulation - Couverture souple

Peng, Kang-Chun

 
9783639122473: Modulated Frequency Synthesizers: Design for Wideband and High Efficiency Modulation
Couverture souple
ISBN 10 : 363912247X ISBN 13 : 9783639122473
Editeur : VDM Verlag Dr. Müller, 2009

Synopsis

This book presents a wideband GFSK-modulated fractional-N frequency synthesizer which using the two-point delta-sigma modulation (TPDSM). Two bottlenecks in this design have been rigorously investigated. One is the nonlinear performance of fractional-N frequency synthesizers. The other one is the inherent gain and delay mismatch between the two modulation points. Both nonlinear and mismatch factors dominate the modulation accuracy in the closed phase-locked loop (PLL). The proposed formulation can successfully predict the dependencies of the modulation accuracy on both factors. The comparison of the averaged frequency deviation and frequency-shift-keying (FSK) error between theory and measurement shows excellent agreement. The modulated frequency synthesizer implemented in this study can achieve a 2.5 Mbps data rate as well as a 15 ¿s PLL stable time with only 2.2 % FSK error under good design and operating conditions.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag Dr. Müller
Date d'édition
2009
Langue
anglais
ISBN 10 
363912247X
ISBN 13 
9783639122473
Reliure
Broché
Nombre de pages
116
Coordonnées du fabricant
non disponible
Personne responsable
non disponible