NDLI: Digital local-oscillator generation using a delta-sigma technique

Content Provider	IEEE Xplore Digital Library
Author	de Graaf, J.W. Cantrell, B.H.
Copyright Year	2002
Description	Author affiliation: Naval Res. Lab., Washington, DC, USA (de Graaf, J.W.; Cantrell, B.H.)
Abstract	Local-oscillator (LO) signals in up/down converters for most radar systems are typically generated using synthesizers, bench sources, custom-built frequency sources or direct-digital synthesis (DDS). In a digital-array radar (DAR) concept, a single-bit delta-sigma (/spl Delta/-/spl Sigma/) technique is considered as a viable alternative to encode sine waves digitally for LO signal generation. This technique is applied to synthesize sinusoidal signals at a low frequency. These signals are then injected into a frequency multiplier system for generating LO signals. When independently coded /spl Delta/-/spl Sigma/ sine waves are created offline on a per element basis for a phased array system, the in-band noise shaped response improves as a result of digital beam forming (DBF). In this paper, a single-bit encoding technique for LO signal generation is discussed. Some simulation results are provided as well as a candidate microwave design for a frequency multiplier system.
Sponsorship	IEEE Los Angeles Council IEEE Aerospace & Electron. Syst. Soc. Northrop Grumman Corp. Raytheon Co
Starting Page	129
Ending Page	134
File Size	465036
Page Count	6
File Format	PDF
ISBN	078037357X
DOI	10.1109/NRC.2002.999708
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal generators Radar Frequency synthesizers Signal synthesis Phased arrays Frequency conversion Low-frequency noise Multi-stage noise shaping Phase noise Encoding
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

FPGA Implementation of Sigma-Delta Modulators in Fractional-N Frequency Synthesis

Agile multi-band delta-sigma frequency synthesizer architecture

Design of low noise fractional-N frequency synthesizer using sigma-delta modulation technique

Optimal dithered digital sigma-delta modulators for fractional-N frequency synthesizers

Delta-sigma waveform generation for digital radars

Reduced complexity, high performance digital delta-sigma modulator for fractional-N frequency synthesis

A nested digital delta-sigma modulator architecture for fractional-N frequency synthesis

Sigma-delta modulation technique for low noise fractional-N frequency synthesizer

Delta-Sigma Modulation in Direct Digital Frequency Synthesis

Digital local-oscillator generation using a delta-sigma technique

Similar Documents

FPGA Implementation of Sigma-Delta Modulators in Fractional-N Frequency Synthesis

Agile multi-band delta-sigma frequency synthesizer architecture

Design of low noise fractional-N frequency synthesizer using sigma-delta modulation technique

Optimal dithered digital sigma-delta modulators for fractional-N frequency synthesizers

Delta-sigma waveform generation for digital radars

Reduced complexity, high performance digital delta-sigma modulator for fractional-N frequency synthesis

A nested digital delta-sigma modulator architecture for fractional-N frequency synthesis

Sigma-delta modulation technique for low noise fractional-N frequency synthesizer

Delta-Sigma Modulation in Direct Digital Frequency Synthesis

Digital local-oscillator generation using a delta-sigma technique