NDLI: An integrated fractional-N frequency synthesizer for software-defined radio applications

Content Provider	IEEE Xplore Digital Library
Author	Osmany, S.A. Herzel, F. Scheytt, J.C.
Copyright Year	2010
Description	Author affiliation: IHP GmbH, Im Technologiepark 25, 15236 Frankfurt (Oder), Germany (Osmany, S.A.; Herzel, F.; Scheytt, J.C.)
Abstract	We present an integrated fractional-N frequency synthesizer providing in-phase / quadrature phase signal over the frequency bands 0.6–4.6 GHz, 5–7 GHz, 10–14 GHz, and in-phase signal over 20–28 GHz for software-defined radio applications. An integrated voltage controlled oscillator (VCO) with 34 % tuning range and a set of high speed dividers are used to accomplish all the frequencies. By employing a multi-bit, single-loop sigma delta modulator and an 8-bit reference divider, the synthesizer can achieve a frequency step size of less than 10 Hz. The measured PLL phase noise is −132 dBc/Hz and −121 dBc/Hz at 1 MHz offset for 884 MHz and 3.5 GHz, respectively. Fabricated in a 0.25 µm SiGe-BiCMOS process, the VCO including buffer draws 45 mA from a 5 V supply and the rest draws 150 mA from a 3 V supply.
Starting Page	243
Ending Page	246
File Size	548159
Page Count	4
File Format	PDF
ISBN	9781424454563
e-ISBN	9781424454594
DOI	10.1109/SMIC.2010.5422947
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency synthesizers Application software Voltage-controlled oscillators RF signals Frequency conversion Tuning Delta-sigma modulation Phase modulation Delta modulation Frequency measurement wireless communication Cognitive radio fractional-N frequency synthesizer software-defined radio (SDR) sigma-delta modulator (SDM) voltage-controlled oscillator (VCO) widetuning range
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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