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Author: dylan williams

Displaying records 21 to 30 of 149 records.
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21. Chip-level Security for RFID Smart Cards and Tags
Published: 9/4/2007
Authors: Dylan F Williams, Catherine A Remley
Abstract: This report on RFID chip-level security is written to help both technical and non-technical audiences navigate the complex chip-level security features of RFID smart cards and tags, and make intelligent security choices. The report explores both atta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32656

22. Systematic Error of the Nose-to-Nose Sampling-Oscilloscope Calibration
Published: 9/1/2007
Authors: Dylan F Williams, Tracy S. Clement, Catherine A Remley, Paul D Hale, F. Verbeyst
Abstract: We use traceable swept-sine and electrooptic-sampling-system-based-sampling-oscilloscope calibrations to measure the systematic error of the nose-to-nose calibration, and compare the results to simulations. Our results show that the errors in the nos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32562

23. The Sampling Oscilloscope as a Microwave Instrument
Published: 8/1/2007
Authors: Dylan F Williams, Paul D Hale, Catherine A Remley
Abstract: Many modern high-speed oscilloscopes are well suited for precise microwave waveform, modulated-signal, and nonlinear measurements. These oscilloscopes have bandwidths of up to 100 GHz and are available with nominally 50 ? input impedances. Like their ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32637

24. RFID Devices and Systems in Homeland Security Applications
Published: 7/1/2007
Authors: Catherine A Remley, Jeffrey R Guerrieri, Dylan F Williams, David R Novotny, Anthony B Kos, Nelson Bryner, Nader Moayeri, Michael Souryal, Kang Lee, Steven Fick
Abstract: This article reports on activities being carried out by the National Institute of Standards and Technology to ensure secure, reliable use of Radio-Frequency Identification (RFID) technology in homeland security and public safety applications. These p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32708

25. Compensation of Random and Systematic Timing Errors in Sampling Oscilloscopes
Published: 12/1/2006
Authors: Paul D Hale, C. M. Wang, Dylan F Williams, Catherine A Remley, Joshua Wepman
Abstract: In this paper, a method of correcting both random and systematic timebase errors using measurements of only two quadrature sinusoids made simultaneously with a waveform of interest is described. The authors estimate the fundamental limits to the proc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31702

26. Terminology for High-Speed Sampling-Oscilloscope Calibration
Published: 12/1/2006
Authors: Dylan F Williams, Tracy S. Clement, Paul D Hale, Andrew Dienstfrey
Abstract: We discuss procedures for calibrating high-speed sampling oscilloscopes at the National Institute of Standards and Technology, and the terminology associated with those calibrations. The discussion clarifies not only the calibration procedures, but h ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32316

27. Shielding And Attenuation Properties of Large Buildings and Structures
Published: 9/4/2006
Authors: Christopher L Holloway, Galen H Koepke, Dennis G Camell, Catherine A Remley, S. A. Schima, Dylan F Williams
Abstract: For various applications, there is a growing need to understand the shielding and/or attenuation properties of large buildings and structures. In this paper, we present experimental data for the coupling of electromagnetic fields into various types o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32311

28. Minimum-Phase Calibration of Sampling Oscilloscopes
Published: 8/15/2006
Authors: Andrew M Dienstfrey, Paul D Hale, Darryl A. Keenan, Tracy S. Clement, Dylan F Williams
Abstract: We describe an algorithm for determining the minimum phase of a linear time-invariant response function from its magnitude. The procedure is based on Kramers Kronig relations in combination with auxiliary direct measurements of the desired phase resp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901517

29. Calibration of Sampling Oscilloscopes With High-Speed Photodiodes
Published: 8/1/2006
Authors: Tracy S. Clement, Paul D Hale, Dylan F Williams, C. M. Wang, Andrew Dienstfrey, Darryl A. Keenan
Abstract: We calibrate the magnitude and phase response of equivalent-time sampling oscilloscopes to 110 GHz. We use a photodiode that has been calibrated with our electrooptic sampling system as a reference input pulse source to the sampling oscilloscope. We ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32157

30. Minimum-phase calibration of sampling oscilloscopes
Published: 8/1/2006
Authors: Andrew Dienstfrey, Paul D Hale, Darryl A. Keenan, Tracy S. Clement, Dylan F Williams
Abstract: We describe an algorithm for determining the minimum phase of a linear, time-invariant response function from its magnitude. The procedure is based on Kramers-Kronig relations in combination with auxiliary direct measurements of the desired phase res ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32162



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