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Displaying 26 - 50 of 195

NIST Framework and Roadmap for Smart Grid Interoperability Standards, Release 2.0

February 16, 2012
Author(s)
George W. Arnold, Gerald FitzPatrick, David A. Wollman, Thomas L. Nelson, Paul A. Boynton, Galen H. Koepke, Allen R. Hefner Jr., Cuong Nguyen, Jeffrey A. Mazer, Dean Prochaska, Marianne M. Swanson, Tanya L. Brewer, Victoria Yan Pillitteri, David H. Su, Nada T. Golmie, Eric D. Simmon, Allan C. Eustis, David Holmberg, Steven T. Bushby, Michael D. Janezic, Ajitkumar Jillavenkatesa
The Energy Independence and Security Act (EISA) of 2007 requires that NIST develop a framework of standards for the Smart Grid. This document is the second release of the framework first published in January, 2010. It covers the activities and outputs of

Measurement of Shielding Effectiveness of Electrically-Small Enclosures

August 13, 2011
Author(s)
Christopher L. Holloway, Colton R. Dunlap, John M. Ladbury, Joshua A. Gordon, Jason B. Coder, Galen H. Koepke
In the following we propose a technique for determining the shielding effectiveness (SE) an electrically small enclosure. In particular, we use this technique to explore the shielding characteristics of a rectangular box used to shield a satellite based

An Electromagnetic Evaluation of the NASA Space Power Facility at Plum Brook Station

July 1, 2011
Author(s)
Galen H. Koepke, John M. Ladbury, Dennis G. Camell, Jason B. Coder, Chriss A. Grosvenor, Randy Direen, Jeffrey R. Guerrieri
We describe in this report (Technical Note) an extensive electromagnetic evaluation of a unique test facility designed and built by the National Aeronautics and Space Administration (NASA). The Space Power Facility is presumed to be the world’s largest

Radio Frequency Measurements to Support Public Safety Wireless Communications in Large Buildings and Structures

June 13, 2011
Author(s)
William F. Young, Catherine A. Remley, Christopher L. Holloway, Galen H. Koepke, Dennis G. Camell, John M. Ladbury
The public safety community requires dependable wireless communications in buildings that often disrupt the radio frequency propagation due to the construction material, architectural features, or large physical dimensions. Here we introduce measurements

Measurements and Models for the Wireless Channel in a Ground-Based Urban Setting in Two Public Safety Frequency Bands

January 20, 2011
Author(s)
William F. Young, Catherine A. Remley, David W. Matolak, Qian Zhang, Christopher L. Holloway, Chriss A. Grosvenor, Camillo A. Gentile, Galen H. Koepke, Qiong Wu
We report on measured peer-to-peer (ground-based) wireless channel characteristics for an urban environment in two public safety frequency bands. Results are based upon measurements taken in Denver in June 2009. The public safety bands we investigated are

We need more "smarts" for the Society activity in Smart Grid

July 6, 2010
Author(s)
Galen H. Koepke, Donald Heirman
This editorial column in the Newsletter describes a recent "EMC for the Smart Grid" workshop held at Connectivity Week 2010 in Santa Clara, CA. The text is based on a meeting report from the workshop supplemented with remarks by the Associate Editor for

Parametric Study on the use of Reverberation Chambers for Repeatable/Controllable Wireless Testing: Application to BER Measurements

April 12, 2010
Author(s)
Christopher L. Holloway, E Genender, Catherine A. Remley, John M. Ladbury, Galen H. Koepke
We illustrate use of the reverberation chamber to simulate different wireless propagation environments including effects such as narrowband or frequency-selective fading and Doppler spread. These effects have a strong impact on the quality of the wireless

Radio Wave Propagation Into Large Building Structures, Part 2: Characterization of Multipath

April 2, 2010
Author(s)
Catherine A. Remley, Galen H. Koepke, Christopher L. Holloway, Chriss A. Grosvenor, Dennis G. Camell, John M. Ladbury, Robert T. Johnk, William F. Young
We report on measurements that characterize multipath conditions that affect broadband wireless communications in building penetration scenarios. Measurements carried out in various large structures quantify both radio-signal attenuation and frequency

Electromagnetic Penetration Studies for Three Different Aircraft

August 17, 2009
Author(s)
Chriss A. Grosvenor, David R. Novotny, Dennis G. Camell, Galen H. Koepke, Robert Johnk, Nino Canales
The National Institute of Standards and Technology has completed penetration studies on three different aircraft for the Federal Aviation Administration. These studies are used to understand cavity coupling characteristics between antennas placed at

Measurements to Support Public Safety Communications: Attenuation and Variability of 750 MHz Radio Wave Signals in Four Large Building Structures: NIST Technical Note 1552

August 7, 2009
Author(s)
William F. Young, Kate Remley, John M. Ladbury, Christopher L. Holloway, Chriss A. Grosvenor, Galen H. Koepke, Sander Floris, Wouter Numan, Andrea Garuti
In this report, we investigate radio communication problems faced by emergency responders (firefighters, police, and emergency medical personnel) in disaster situations. A fundamental challenge to radio communications into and out of large buildings is the
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