A novel dual-loop multi-phase frequency synthesizer
Abstract
This work describes a novel dual-loop frequency synthesizer for applications in wireless communications. The synthesizer comprises a dual-loop architecture with a multi-phase Voltage Controlled Oscillator (VCO) in one of the loops. The advantage of this architecture is the improvement of the transient response and channel spacing compared with conventional dualloop frequency synthesizers. The proposed architecture has been implemented on a Xilinx Virtex-5 PFGA board. Measurement results confirm that the new dual-loop multi-phase frequency synthesizer achieves comparable phase noise performance but superior frequency resolution compared with the conventional dual-loop frequency synthesizer. In addition, both the in-band and out-of-band noise of the proposed architecture are improved compared with a delta-sigma modulated fractional-N frequency synthesizer. © 2007 IEEE.
Publication Title
European Conference on Circuit Theory and Design 2007, ECCTD 2007
Recommended Citation
Ye, Z., Chen, W., & Kennedy, M. (2007). A novel dual-loop multi-phase frequency synthesizer. European Conference on Circuit Theory and Design 2007, ECCTD 2007, 567-570. https://doi.org/10.1109/ECCTD.2007.4529659
