Title :
A ΣΔ fractional- N synthesizer for GSM standard specifications
Author :
Mnif, H. ; Fakhfakh, M. ; Krout, I. ; Barhoumi, M. ; Loulou, M.
Author_Institution :
Nat. Eng. Sch. of Sfax, Sfax
Abstract :
We describe in this paper a new method for the characterization and optimization with heuristic algorithm of fractional-N synthesizer. This method will be applied to GSM application. The treated synthesizer based in the use a type-II third order ΣΔ modulator generates signals in 935-960 MHz range with 200 KHz resolution with a spur of less than -80 dBc/Hz. Optimal parameters values are so determined and verified by different simulations.
Keywords :
cellular radio; frequency synthesizers; sigma-delta modulation; GSM standard specification; fractional-N synthesizer; frequency 935 MHz to 960 MHz; frequency synthesizer; type-II third order ΣΔ modulator; Bandwidth; Charge pumps; Filters; Frequency synthesizers; GSM; Phase detection; Phase frequency detector; Phase locked loops; Phase noise; Voltage-controlled oscillators; Algorithm; Characterization; Fractional-N; Frequency synthesizer; GSM; Optimization; Phase-locked loop (PLL);
Conference_Titel :
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location :
Nice
Print_ISBN :
1-4244-0394-4
Electronic_ISBN :
1-4244-0395-2
DOI :
10.1109/ICECS.2006.379636
