NDLI: A digital ultra-fast acquisition linear frequency modulated PLL for mm-wave FMCW radars

Content Provider	IEEE Xplore Digital Library
Author	Wanghua Wu Long, J.R. Staszewski, R.B.
Copyright Year	2009
Description	Author affiliation: Electronics Research Laboratory/DIMES, Delft University of Technology Mekelweg 4, 2628 CD Delft, The Netherlands (Wanghua Wu; Long, J.R.; Staszewski, R.B.)
Abstract	We propose a new digitally-intensive frequency synthesizer for a 60 GHz wireless sensing FMCW radar system and verify it though detailed circuit-level and system-level simulations. It consists of a 20 GHz digital PLL and a frequency tripler. The 20 GHz digital PLL features ultra-fast acquisition (less than 5 μs) and low phase noise (-80 dBc/Hz at 100 kHz offset) by adopting dynamic and hitless loop bandwidth control. Linear frequency modulation (LFM) produces a triangle-shaped chirp signal with 3.2 GHz bandwidth in a 2 ms sweep. The maximum frequency deviation is only 0.014% of the chirp bandwidth. A multiplier following the 20 GHz PLL extends the LFM bandwidth to 9.6 GHz centered at 60 GHz, resulting in a range resolution better than 5 cm.
Starting Page	32
Ending Page	35
File Size	859122
Page Count	4
File Format	PDF
ISBN	9781424450312
DOI	10.1109/RFIT.2009.5383695
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-01-09
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase noise Frequency synthesizers Frequency modulation Digital modulation Circuit simulation fast acquisition dynamic loop bandwidth control digital frequency synthesizer FMCW radar Phase locked loops Wireless sensor networks Chirp modulation linear frequency modulation phase-locked loop Radar Bandwidth
Content Type	Text
Resource Type	Article

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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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