Title :
Spurious -Tone Suppression Techniques Applied to a Wide-Bandwidth 2.4GHz Fractional-N PLL
Author :
Wang, Kevin J. ; Swaminathan, Ashok ; Galton, Ian
Author_Institution :
Univ. of California at San Diego, La Jolla, CA
Abstract :
This paper describes a fractional-N PLL IC based on a new digital quantizer that replaces the DeltaSigma modulator (DeltaSigmaM) used in conventional designs. In combination with a charge pump offset technique and a sampled loop filter the new quantizer enables state-of-the-art fractional spur performance without sacrificing BW.
Keywords :
digital integrated circuits; phase locked loops; quantisation (signal); DeltaSigma modulator; bandwidth 2.4 GHz; charge pump offset technique; digital quantizer; fractional-N PLL; sampled loop filter; spurious-tone suppression techniques; state-of-the-art fractional spur performance; Coupling circuits; Filters; Frequency synthesizers; Phase frequency detector; Phase locked loops; Phase noise; Pulse generation; Solid state circuits; Switches; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2008. ISSCC 2008. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-2010-0
Electronic_ISBN :
978-1-4244-2011-7
DOI :
10.1109/ISSCC.2008.4523197
