A Random-Based Fractional-N Frequency Divider for Spurious Tones Cancellation

Nicolas Regimbal (1, 2) , Yann Deval (2) , Franck Badets (1, 2) , Jean-Baptiste Begueret (2)

1 ST-CROLLES - STMicroelectronics [Crolles]
2 IMS - Laboratoire de l'intégration, du matériau au système

Abstract: A new fractional frequency divider is presented. It is based on a random dithering of the phase error. The divider output spectrum is cleaned from any fractional spurious tone. Moreover, as no noise shaping is applied, the proposed solution can be implemented in frequency synthesizers like Phase Locked Loops (PLL) without implication on the loop filter.

Domaines: Electronique

Nicolas Regimbal, Yann Deval, Franck Badets, Jean-Baptiste Begueret. A Random-Based Fractional-N Frequency Divider for Spurious Tones Cancellation. IEEE International Conference on Electronics Circuits and Systems, Dec 2010, Athènes, Greece. pp.251-255. ⟨hal-00522722⟩