Title :
A comparison of Sigma-Delta Modulator techniques for fractional-N frequency synthesis
Author :
Wang, Hongyu ; Brennan, Paul ; Jiang, Dai
Author_Institution :
Department of Electronic and Electrical Engineering, University College London, London, UNITED KINGDOM. h.wang@ee.ucl.ac.uk
Abstract :
This paper investigates the design of ditital ¿-¿ modulators (SDM) for fractional-N frequency synthesis. The topologies of four kinds of third order SDM are discussed in detail. The power density spectrum and noise performance are compared analyzed.
Keywords :
Delta-sigma modulation; Digital modulation; Frequency modulation; Frequency synthesizers; Multi-stage noise shaping; Noise shaping; Phase locked loops; Phase noise; Quantization; Topology;
Conference_Titel :
Circuits and Systems, 2006. MWSCAS '06. 49th IEEE International Midwest Symposium on
Conference_Location :
San Juan, PR
Print_ISBN :
1-4244-0172-0
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2006.382149
