NDLI: LMS-based calibration of an RF digitally controlled oscillator for mobile phones

Content Provider	IEEE Xplore Digital Library
Author	Staszewski, R.B. Wallberg, J. Chih-Ming Hung Feygin, G. Entezari, M. Leipold, D.
Copyright Year	2004
Abstract	We propose a least-mean square based gain calibration technique of an RF digitally controlled oscillator (DCO) in an all-digital phase-locked loop (ADPLL). The DCO gain of about 12-kHz/least significant bit is subject to process, voltage and temperature variations, but is tracked and compensated in real time. Precise setting of the inverse DCO gain in the ADPLL modulating path allows direct wide-band frequency modulation that is independent from the ADPLL loop bandwidth. The technique is part of a single-chip fully compliant Global System for Mobile Communications (GSM)/EDGE transceiver in 90-nm digital CMOS.
Sponsorship	IEEE Circuits and Systems Society
Starting Page	225
Ending Page	229
Page Count	5
File Size	613313
File Format	PDF
ISSN	15497747
Volume Number	53
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Radio frequency Digital control Oscillators Mobile handsets GSM Phase locked loops Voltage Temperature Wideband modulator All digital calibration deep-submicrometer CMOS digital compensation digitally controlled oscillator (DCO) frequency synthesizer Global System for Mobile Communications (GSM) mobile phones
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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