Digital Phase Tightening for Millimeter-wave Imaging
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Sodini_Digital phase.pdf
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159.85 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Nguyen, Khoa M.
Accardi, Anthony J.
Kim, Helen H.
Wornell, Gregory W.
Sodini, Charles G.
Date Issued
November 2010
Journal
IEEE Custom Integrated Circuits Conference 2010 (CICC)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Nguyen, Khoa M. et al. “Digital Phase Tightening for Millimeter-wave Imaging.” IEEE Custom Integrated Circuits Conference 2010 (CICC). 1–4. © Copyright 2010 IEEE
Version
Final published version
Abstract
A new technique called digital phase tightening reduces phase noise from receiver front-end circuits to allow precise phase estimation for digital beamforming in millimeter-wave (MMW) imaging applications. This is achieved by leveraging the large ratio between the MMW carrier frequency and the relatively low frame rates in imaging applications. By mixing down to an intermediate frequency (IF) and then averaging over many samples to estimate the phase, we reduce phase noise and attain phase error of the MMW beamformer in the femtosecond range. A test chip demonstrating the phase tightening concept was designed and fabricated using 0.13μm CMOS, and we show that an RMS error of 3.5fs is feasible with this technique.
MIT Department
Lincoln Laboratory
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/CICC.2010.5617389
