Título

Optimized reduction of spur tones in fractional frequency synthesizers

Autor

VICTOR RODOLFO GONZALEZ DIAZ

MIGUEL ANGEL GARCIA ANDRADE

GUILLERMO ESPINOSA FLORES VERDAD

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

Fractional - (FRACTIONAL) Frequency synthesizers - (FREQUENCY SYNTHESIZERS) Digital-sigma-delta - (DIGITAL-SIGMA-DELTA) Phase noise - (PHASE NOISE) Spur tones - (SPUR TONES) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) FÍSICA - (CTI) ELECTRÓNICA - (CTI) ELECTRÓNICA - (CTI)

Resumen o descripción

In this article the contribution of the digital ΣΔ modulator in fractional frequency synthesizers is explored. Due to the circuit’s non linear behavior, the spur tones generated by the digital ΣΔ modulation degrade the synthesizer’s phase noise even in regions where the charge pump noise is dominant. A new method to dither digital MASH ΣΔ modulators for fractional frequency synthesizers is proposed. The method barely increases the circuit complexity and has the same performance as more cumbersome architectures. Also, a new design consideration to linearize the voltage control oscillator is proposed. Experimental results are obtained in an on-chip fractional synthesizer manufactured in CMOS technology.

Editor

Springer Science+Business Media

Fecha de publicación

2010

Tipo de publicación

Artículo

Versión de la publicación

Versión aceptada

Recurso de información

http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1472

Formato

application/pdf

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Público en general

Sugerencia de citación

Gonzalez-Diaz, V.R., et al., (2010). Optimized reduction of spur tones in fractional frequency synthesizers, Analog Integrated Circuits and Signal Processing, Vol. 65, (2): 245–251

Repositorio Orígen

Repositorio Institucional del INAOE

Descargas

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