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Search Publications by: Kate Remley (Assoc)

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Displaying 351 - 375 of 437

Compensation of Random and Systematic Timing Errors in Sampling Oscilloscopes

December 1, 2006
Author(s)
Paul D. Hale, C. M. Wang, Dylan Williams, Kate Remley, Joshua Wepman
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 procedure

Eliminating FFT Artifacts in Vector Signal Analyzer Spectra

October 1, 2006
Author(s)
Michael McKinley, Kate Remley, M. Myslinski, J. S. Kenney
We present a method to minimize spectral leakage in measurements of periodic signals made with the vector signal analyzer (VSA) by taking into account the periodic nature of the Fast Fourier Transform (FFT). This method negates the need for filtering the

Propagation and Detection of Radio Signals Before, During, and After the Implosion of a Large Convention Center

October 1, 2006
Author(s)
Christopher L. Holloway, Galen H. Koepke, Dennis G. Camell, Catherine A. Remley, Susan A. Schima, M. McKinley, Robert T. Johnk
In this report, we investigate radio communications problems faced by emergency responders (firefighters and police) in disaster situations such as collapsed buildings. A fundamental challenge to communications into and out of large buildings is the strong

Shielding And Attenuation Properties of Large Buildings and Structures

September 4, 2006
Author(s)
Christopher L. Holloway, Galen H. Koepke, Dennis G. Camell, Kate Remley, S. A. Schima, Dylan Williams
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 of

Wideband Large-Signal RF Measurements Applied to Behavioral Model Extraction

September 1, 2006
Author(s)
Kate Remley, M. Myslinski, Dominique Schreurs, Bart Nauwelaers
This work presents for the first time wideband Large Signal Network Analyzer (LSNA) measurements used to extract a large-signal behavioral model of an RF amplifier. The methodology together with some important issues concerning the data processing is

Editorial for IEEE Transactions on Microwave Theory and Techniques Mini-Special Issue on Large-Signal Characterization and Modeling of Nonlinear Analog Devices, Circuits, and Systems

August 1, 2006
Author(s)
Kate Remley, Nuno de Carvalho, David Root
As Guest Editors, we are honored and excited to introduce this Mini-Special Issue of the Transactions devoted to Measurements for Large-Signal Characterization and Modeling of Nonlinear Analog Devices, Circuits, and Systems. Large-signal measurements

Radio Communications for Emergency Responders in Large Public Buildings: Comparing Analog and Digital Modulation

March 7, 2006
Author(s)
Catherine A. Remley, Marc Rutschlin, Dylan F. Williams, Robert T. Johnk, Galen H. Koepke, Christopher L. Holloway, Mike G. Worrell, Andy MacFarlane
To assess in-building radio coverage, in 2004 the City of Phoenix Fire Department carried out extensive testing of their radio systems. They deployed firefighters in standard configurations in a variety of buildings, and rated on a scale of 1 to 5 the

Sampling-Oscilloscope Measurement of a Microwave Mixer With Single-Digit Phase Accuracy

March 1, 2006
Author(s)
Dylan F. Williams, Hassen Khenissi, Fabien Ndagijimana, Catherine A. Remley, Joel Dunsmore, Paul D. Hale, Jack Wang, Tracy S. Clement
We describe a straightforward method of separately characterizing up-conversion and down-conversion in microwave mixers with a sampling oscilloscope. The method mismatch-corrects the results, determines both magnitude and phase, and uses a novel time-base

A Measurement-Based Multisine Design Procedure

January 1, 2006
Author(s)
M. Myslinski, Kate Remley, Michael McKinley, Dominique Schreurs, Bart Nauwelaers
This work presents a procedure to design a multisine with probability density function (PDF) similar to that of a measured realistic digitally modulated signal. We discuss important practical issues crucial to the successful multisine construction and

Electromagnetic Signatures of WLAN Cards and Network Security

December 21, 2005
Author(s)
Catherine A. Remley, Chriss A. Grosvenor, Robert T. Johnk, David R. Novotny, Paul D. Hale, Michael McKinley, Emmanouil Antonakakis, A Karygiannis
The proliferation of wireless devices and the availability of new wireless applications and services raise new privacy and security concerns. Although network-layer anonymity protects the identities of the communication endpoints, the physical layer of