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You searched on: Author: dylan williams Sorted by: title

Displaying records 1 to 10 of 195 records.
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1. 0.1-10 GHZ CMOS Voltage Standard
Published: 5/1/1999
Authors: Dylan F Williams, David K Walker
Abstract: We discuss the development of a sinusoidal CMOS voltage standard. The standard incorporates a FET power sensor that transfers the voltage measured at a primary standards laboratory to a user‰s laboratory. We anticipate an absolute accuracy of about 1 ...

2. 500 GHz - 750 GHz Rectangular-Waveguide Vector-Network-Analyzer Calibrations
Published: 10/31/2011
Author: Dylan F Williams
Abstract: We develop an uncertainty analysis that captures the dominant sources of measurement error in state-of-the-art rectangular-waveguide vector-network-analyzer measurements over the frequency range 500 GHz ‹ 750 GHz. We use the analysis to assess th ...

3. A Causal Microwave Circuit Theory and Its Implications
Published: 8/1/1999
Authors: Dylan F Williams, Bradley K Alpert
Abstract: We will describe a new causal power-normalized waveguide equivalent-circuit theory and explore its implications. The new theory marries a power normalization with additional constraints that enforce simultancity of the theory's voltages and currents ...

4. A Complete Multimode Equivalent-Circuit Theory for Electrical Design
Series: Journal of Research (NIST JRES)
Published: 6/22/1999
Authors: Dylan F Williams, L. A. Hayden, Roger Marks
Abstract: This work presents a complete equivalent-circuit theory for lossy multimode transmission lines. Its voltages and currents are based on general linear combinations of standard normalized modal voltages and currents. The theory includes new expressions ...

5. A Complete Multinode Equivalent-circuit Theory for Electrical Design
Series: Journal of Research (NIST JRES)
Published: 8/1/1997
Authors: Dylan F Williams, Roger Marks, L. A. Hayden

6. A Coplanar Probe to Microstrip Transition
Published: 7/1/1988
Authors: Dylan F Williams, Tom H Miers
Abstract: A transition between a coplanar probe and a microstrip transmission line is reported. The transition is significant in that it does not require substrate via holes. A set of microstrip impedance standards were developed for the purpose of de-embeddin ...

7. A General Waveguide Circuit Theory
Series: Journal of Research (NIST JRES)
Published: 10/1/1992
Authors: Roger Marks, Dylan F Williams
Abstract: This work generalizes and extends the classical circuit theory of electromagnetic waveguides. Unlike the conventional theory, the present formulation applies to all waveguides composed of linear, isotropic material, even those involving lossy conduct ...

8. A Metric for Assessing the Degree of Device Nonlinearity and Improving Experimental Design
Published: 6/11/2004
Authors: Dominique Schreurs, Catherine A Remley, Dylan F Williams
Abstract: We propose a metric that quantifies the degree of nonlinearity of state-space trajectories. We use the metric to improve the selection of collections of measurements for the development of behavioral models. We illustrate the method with an off-the-s ...

9. A New Electronic Verification Method for Vector Network Analyzers
Published: 6/13/2010
Authors: Ronald A Ginley, Dylan F Williams, Denis X. LeGolvan
Abstract: The National Institute of Standards and Technology (NIST) has recently introduced a new method for the verification of Vector Network Analyzers (VNAs). The technique is based on the new electronic calibration units that are available from several ma ...

10. A Precision Millimeter-Wave Modulated-Signal Source
Published: 6/6/2013
Authors: Catherine A Remley, Paul D Hale, Dylan F Williams, Chih-Ming Wang
Abstract: We develop and characterize a modulated-signal source for use at millimeter-wave frequencies. Components within the source are phase locked by a 10 GHz reference source to minimize drift and improve synchronization. The complex frequency response of ...

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  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series