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Search Publications by: Christopher L. Holloway (Fed)

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Displaying 76 - 100 of 213

Radiowave Propagation in Urban Environments with Application to Public-Safety Communications

August 4, 2014
Author(s)
William F. Young, Catherine A. Remley, Christopher L. Holloway, Galen H. Koepke, Dennis G. Camell, John M. Ladbury, Colton R. Dunlap
We characterize key elements that pose challenges to public-safety radio communications into and out of large buildings, including the strong attenuation of radio signals caused by losses and scattering in the building materials and structure, and the

Millimeter Wave Detection via Autler-Townes Splitting in Rubidium Rydberg Atoms

July 17, 2014
Author(s)
Joshua A. Gordon, Christopher L. Holloway, Andrew Schwarzkopf, Dave Anderson, Stephanie Miller, Nithiwadee Thaicharoen, Georg Raithel
In this paper we demonstrate the detection of millimeter waves via Autler-Townes splitting in 85Rb Rydberg atoms. This method may provide an independent atomic-based SI-traceable method for measuring mm-wave electric fi elds, which addresses a gap in

Correlation Coefficient and Loading Effects for MIMO Antennas in a Reverberation Chamber

August 13, 2013
Author(s)
Nick Janssen, Kate Remley, Christopher L. Holloway, William F. Young
The correlation coefficient is a common metric for assessing the performance of an antenna for a multiple-input, multiple-out wireless device. In this paper, the effect of loading a reverberation chamber on the calculation of the correlation coefficient is

Introduction to Special Issue Honoring Dr. Clayton R. Paul

August 1, 2013
Author(s)
Christopher L. Holloway
Dr. Paul’s unique insight into the topics covered in these five papers and in many other areas in EM and EMC, will be missed. We are all tremendously grateful to Dr. Paul. He was invaluable to us personally and to many others in promoting the understanding

Characterizing Large-Form-Factor Devices in a Reverberation Chamber

July 15, 2013
Author(s)
Catherine A. Remley, Gerrit S. van de Beek, Christopher L. Holloway, John M. Ladbury
Abstract—With new technologies such as machine-to-machine communications there is a growing need to test large-formfactor devices in reverberation chambers. The performance of the reverberation chamber can be degraded by the physical characteristics of

Partial and Internal Inductance: Two of Clayton R. Paul's Many Passions

April 23, 2013
Author(s)
Christopher L. Holloway, Edward E. Kuester
Inductance is one of the fundamental defined parameters in electromagnetics and it takes on a variety of formulations and definitions in the electromagnetic compatibility (EMC) community. The concept of inductance in its many definitions, uses and caveats

A frequency-bandgap waveguide controlled with metafilms composed of cubic particles

November 20, 2012
Author(s)
Sung Kim, Christopher L. Holloway, Michael D. Janezic, Kendra L. Kumley, James R. Baker-Jarvis, Edward Kuester
We present a rectangular S-band waveguide having electromagnetic bandgap properties (stopbands) controlled with sheets of metafilms composed of ceramic particles, in which we present both analytic and experimental results. Metafilms composed of TiO("d)2

Early-time Behavior in Reverberation Chambers and Its Effect on the Relationships Between Coherence Bandwidth, Chamber Decay Time, RMS Delay Spread, and the Chamber Build-up Time

August 12, 2012
Author(s)
Christopher L. Holloway, Haider Shah, Ryan J. Pirkl, Catherine A. Remley, David A. Hill, John M. Ladbury
The use of reverberation chambers for electromagnetic testing is widely being accepted for use in many measurement applications. In recent years reverberation chambers are beginning to merge as a test facility for testing wireless device and for emulating