Abstract
A fully-digital frequency synthesizer for RF wireless applications has recently been proposed. It replaces the conventional VCO with a digitally-controlled oscillator with sufficiently fine frequency resolution. The conventional phase/frequency detector, charge pump and RC loop filter are replaced by a time-to-digital converter and a simple digital loop filter. In this paper, we present novel techniques used in the all-digital PLL to achieve ultra-fast frequency acquisition of < 50 mus while maintaining excellent phase noise and spurious performance during transmission and reception. This approach has been validated and incorporated in commercial single-chip Bluetooth and GSM radios realized in deep-submicron CMOS
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.