Title :
PLL-based fractional-N frequency synthesizers
Author :
Zarkeshvari, Farhad ; Noel, Peter ; Kwasniewski, Tad
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
Recent trends in the commercial use of fractional-N frequency synthesis can be attributed to the characteristic of independent loop bandwidth-channel spacing that results in low phase noise and relaxes the phase-locked loop (PLL) design constraints. This paper reviews several techniques used to implement fractional-N frequency synthesizers and discusses the advantages and disadvantages. It also addresses design options and associated trade-offs.
Keywords :
frequency synthesizers; integrated circuit design; phase locked loops; fractional-N frequency synthesis; fractional-N frequency synthesizers; loop bandwidth-channel spacing; phase-locked loops; Background noise; Bandwidth; Channel spacing; Frequency synthesizers; Integrated circuit synthesis; Low-frequency noise; Noise reduction; Phase locked loops; Phase noise; Voltage-controlled oscillators;
Conference_Titel :
System-on-Chip for Real-Time Applications, 2005. Proceedings. Fifth International Workshop on
Print_ISBN :
0-7695-2403-6
DOI :
10.1109/IWSOC.2005.91
