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Proceedings Paper

An improved fractional divider for fractional-N frequency synthesizers
Author(s): Wei Zhang; Yang Liu; Yongqi Zhou
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Paper Abstract

This paper presents an improved fractional divider used in 1.8~2GHz fractional-N frequency synthesizers. A new clock setting for delta-sigma modulator (DSM) is proposed to prevent the potential problems of traditional fractional dividers: the DSM output would be wrongly loaded and the action of DSM circuit may affect the phase-detection of phase-frequency-detector (PFD). Simulation result shows the effectiveness of this improvement.

Paper Details

Date Published: 5 August 2009
PDF: 5 pages
Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 738329 (5 August 2009); doi: 10.1117/12.835259
Show Author Affiliations
Wei Zhang, Tianjin Univ. (China)
Yang Liu, Tianjin Univ. (China)
Yongqi Zhou, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 7383:
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications

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