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Topic Area: Electromagnetics

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51. Statistical Measurement Techniques for Equivalent Source Mismatch of 1.85 mn Power Splitter
Topic: Electromagnetics
Published: 12/12/2008
Authors: Thomas M Wallis, Arkadiusz C. (Arkadiusz) Lewandowski
Abstract: The equivalent source mismatch (GG) of a 1.85 mm coaxial power splitter was characterized using two statistical measurement techniques. The first technique, originally described by Juroshek in reference [1], uses a modified one-port calibration metho ...

52. Controlled Transport of Magnetic Particles Using Soft Magnetic Patterns
Topic: Electromagnetics
Published: 11/20/2008
Authors: Richard Conroy, Gary Zabow, John M Moreland, Alan P. Koretsky
Abstract: Inspired by magnetic bubble memory technology, we demonstrate the temporal and spatial manipulation of superparamagnetic beads guided by soft magnetic patterns in a rotating magnetic field. Soft magnetic structures allow complex and repetitive tasks ...

53. Using Reverberation Chambers to Determine the Shielding Effectiveness of Physically Small, Electrically Large Enclosures/Cavities
Topic: Electromagnetics
Published: 11/20/2008
Authors: Christopher L Holloway, David Allan Hill, Marco Sandroni, John M Ladbury, Jason B Coder, Galen H Koepke, Andrew C Marvin
Abstract: With the proliferation of small electric devices in recent years, along with various other applications, there is a growing need to test and determine the shielding properties or shielding effectiveness (SE) of physically small (but electrically larg ...

54. HF Proximity RFID Electromagnetic Emissions and Performance
Topic: Electromagnetics
Published: 11/16/2008
Authors: Jeffrey R Guerrieri, David R Novotny, Catherine A Remley, Michael H Francis
Abstract: We examined the emissions, and performance of commercial High-Frequency Radio Frequency Identification (HF RFID) systems to interrupt and eavesdropping. These proximity RFID systems are used in an increasing number of financial, identification, and ...

55. Polarimetric calibration of indoor and outdoor polarimetric radar cross section systems
Topic: Electromagnetics
Published: 11/16/2008
Author: Lorant A. Muth
Abstract: We use a set of dihedrals to perform polarimetric calibrations on an indoor RCS measurement range. We obtain simultaneously hh, hv, vh, and vv polarimetric data as the calibration dihedrals rotate about the line-of-site to the radar. We apply Fourier ...

56. HF RFID Electromagnetic Emissions and Performance
Topic: Electromagnetics
Published: 11/4/2008
Authors: David R Novotny, Jeffrey R Guerrieri, Michael H Francis, Catherine A Remley
Abstract: We examined the emissions, and susceptibility of commercial High-Frequency Radio Frequency Identification (HF proximity RFID) systems to interrupt and eavesdropping.  RFID systems are being used in an increasing number of financial, identificati ...

57. Probability Density Function of Power Received in a Reverberation Chamber
Topic: Electromagnetics
Published: 11/2/2008
Author: David Allan Hill
Abstract: The probability density function (PDF) for the power received by an arbitrary antenna in a reverberation chamber has been shown to be exponential. The purpose of this correspondence is to provide a direct maximum-entropy derivation of the PDF that d ...

58. The State of Antenna Calibration Standards in the USA, C63.5
Topic: Electromagnetics
Published: 11/1/2008
Authors: Michael Windler, Zhong Chen, Dennis G Camell

59. {I}In-Situ{/I} Torque Magnetometry: Magnetic Coupling in Fe/Cr/Fe Thin-Film Systems
Topic: Electromagnetics
Published: 10/31/2008
Authors: Dong-Hoon Min, S. B. Lee, John M Moreland
Abstract: We have developed an ultra-sensitive torque magnetometer tailored to the study of thin-film interface magnetism and interlayer magnetic exchange coupling. The magnetometer was composed of an optical-fiber interferometer and a customized silicon canti ...

60. Characterization and Modeling or Random Vector-Network-Analyzer Measurement Errors
Topic: Electromagnetics
Published: 10/24/2008
Authors: Arkadiusz C. (Arkadiusz) Lewandowski, Dylan F Williams
Abstract: We present a technique for characterizing and modeling random vector-network-analyzer measurement errors. These errors manifest themselves as random changes or drift of vector-network-analyzer calibration coefficients. We model achange of calibrtion ...

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