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Displaying 26 - 50 of 110

RFID-Assisted Indoor Localization and Communication for First Responders

March 7, 2006
Author(s)
Leonard E. Miller, Perry F. Wilson, Nelson P. Bryner, Michael H. Francis, Jeffrey R. Guerrieri, D W. Stroup, Luke Klein-Berndt
An indoor localization and communication project is described that proposes to use RFID tags, placed in the building beforehand, as navigation waypoints for an inertial navigation system carried by a first responder. The findings from the first year of the

The OATS Method Revisited

April 1, 2005
Author(s)
Christopher L. Holloway, Perry F. Wilson, Robert German
Open area test sites (OATS) or equivalent semi-anechoic chambers are the most commonly used sites for EMC emissions tests. This article discusses the origins of this test methodology and revisits the interference problem (broadcast media) that the OATS

Advances in Radiated EMC Measurement Techniques

December 1, 2004
Author(s)
Perry F. Wilson
Recent research on radiated electromagnetic compatibility measurement techniques is reviewed. The focus is on both widely used methods (open area test site, anechoic chamber, TEM devices) and emerging methods (reverberation chamber, near-field techniques)

Antenna Gain Factor Equivanlent for TEM Cells

September 6, 2004
Author(s)
Perry F. Wilson
This paper derives a gain factor equivalent for TEM cells. The gain factor is then used in simple transmission fomulas to investigate emissions tests in TEM cells and correlation of TEM cell emissions measuremetns to other methods. The correlation

Induced Currents on an EUT in a Free-Space and a Modified TEM Cell Environment

August 19, 2003
Author(s)
Per E. Fornberg, Christopher L. Holloway, Perry F. Wilson
The finite-difference time-domain method is used to investigate whether the currents induced on an equipment under test (EUT) in a TEM cell are similar to those induced in an ideal free-space environment. The approach is to simulate an identical EUT in

Total Radiated Power Limits for Emission Measurements in a Reverberation Chamber

August 18, 2003
Author(s)
Christopher L. Holloway, Perry F. Wilson, Galen H. Koepke, Marco Candidi
In this paper we present a total radiated power limit for emission measurements in reverberation chambers. This total radiation power limit is intended to be equivalent to the FCC maximum E-field limit for emission testing over a ground plane.

EMC Research at NIST, Boulder

July 11, 2003
Author(s)
Perry F. Wilson, Christopher L. Holloway, Galen H. Koepke, John M. Ladbury, Arthur Ondrejka, Robert T. Johnk, Keith D. Masterson, Dennis G. Camell
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