Title :
Analyses of intermodulation effects in fractional-N frequency synthesis
Author :
Jiang, D. ; Brennan, P.V. ; Zhang, J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Coll. London, UK
Abstract :
Spectral purity of fractional-N frequency synthesisers is affected by a set of discrete spurious components. The paper investigates how the intermodulation effects in fractional-N frequency synthesizers contribute to these spurious components. The intermodulation mechanism has been investigated. The predictions of the distribution of intermodulation-born spurs are proven by a set of simulations. Potential approaches to suppress intermodulation-born spurs are also discussed.
Keywords :
frequency synthesizers; intermodulation; network analysis; voltage-controlled oscillators; VCO; discrete spurious components; fractional spurs; fractional-N frequency synthesisers; intermodulation effects; intermodulation-born spur suppression; spectral purity; Educational institutions; Frequency conversion; Frequency synthesizers; Logic programming; Phase detection; Phase frequency detector; Phase modulation; Phase noise; Pulse modulation; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465069
