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Search Publications by: Christopher L. Holloway (Fed)

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Displaying 351 - 375 of 431

Averaged Transition Conditions for Electromagnetic Fields at a Metafilm

October 1, 2003
Author(s)
Edward Kuester, Mohamed Mohamed, Christopher L. Holloway, Melinda Picket-May
This work derives generalized sheettransition conditions (GSTCs) for the average electromagnetic fields across a surface distribution of electrically small scatterers characterized by electric and magnetic polarization densities. We cann such an

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

Assessing A Loaded Reverberation Chamber: Calculating Threshold Metrics

August 18, 2003
Author(s)
Christopher L. Holloway, David A. Hill, John M. Ladbury, Todd M. Lammers
In this paper we present an expression for two threshold metrics of a loaded reverberation chamber. One metric is based on the chamber quality factor (Q) and the other is based on a useable volume of a loaded reverberation chamber. These metrics are

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
N/A

Introducing Material Dispersion in ADI-FDTD

May 1, 2003
Author(s)
Shawn W. Staker, Christopher L. Holloway, Melinda Piket-May
This paper presents the incorporation of material dispersion into ADI-FDTD, ADI-FDTD is an uncontionally stable mathod, allowing the time step to be increased beyond the CFL bound. ADI class problems result in a reduced execution time, while maintaining

Shielding Effectiveness Measurements of Materials in Nested Reverberation Chambers

May 1, 2003
Author(s)
Christopher L. Holloway, David A. Hill, John M. Ladbury, Galen H. Koepke, R. Garzia
In this paper, we present a technique for determining the shielding effectiveness of materials from nested reverberation chamber measurements. The new approach accounts for both aperture and cavity size effects. Various examples are presented to illustrate

The Alternating Direction Implicit (ADI) Formulation of the Finite-Difference Time-Domain (FDTD) Method: Algorithm and Material Dispersion Implementation

May 1, 2003
Author(s)
Shawn W. Staker, Christopher L. Holloway, Alpesh Bhobe, Melinda Piket-May, Tobin A. Driscoll
The ADI-FDTD technique is an unconditionally stable time-domain numerical scheme, allowing the Δ}t time step to be increased beyond the Courant-Friedrichs-Lewy (CFL) limit. Execution time of a simulation is inversely proportional to Δ}t, and as such