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41. Nonlinear calibration of polarimetric radar cross section systems
Topic: Electromagnetics
Published: 11/4/2009
Author: Lorant A. Muth
Abstract: Polarimetric radar cross section systems are characterized by polarimetric system parameters $\epsilon_h$ and $\epsilon_v$. These parameters can be obtained with the use of rotating dihedrals. The full polarimetric dataset as a function of the angl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903029

42. Transport in Electromagnetic Metrology Based on Nonequilibrium Statistical Mechanics
Topic: Electromagnetics
Published: 11/3/2009
Authors: James R. Baker-Jarvis, Jack Thomas Surek
Abstract: Current research is probing transport on ever smaller scales. Modeling of the electromagnetic interaction with nanoparticles or small collections of dipoles and its associated the energy transport and nonequilibrium characteristics requires a deta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902856

43. Internal Resistance of Voltage Source Using the FDTD Technique
Topic: Electromagnetics
Published: 11/2/2009
Author: Ae-kyoung Lee
Abstract: The introduction of the internal resistance of a voltage source is a very effective method for analyzing the electromagnetic characteristics of antennas and microstrip devices using the FDTD technique. However, some trial and error could be accompani ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33204

44. Electromagnetic Fields in Cavities: Deterministic and Statistical Theories
Topic: Electromagnetics
Published: 9/21/2009
Author: David Allan Hill
Abstract: This book covers both deterministic and statistical theories of electromagnetic fields in cavities. Deterministic theory is based on resonant mode characteristics, such as quality factor, Q, and mode excitation via Dyadic Green s functions. Statist ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33202

45. Measurements to Support Performance Evaluation of Wireless Communications in Tunnels for Urban Search and Rescue Robots
Topic: Electromagnetics
Published: 9/4/2009
Authors: Catherine A Remley, Galen H Koepke, Dennis G Camell, George Hough
Abstract: We describe methods for evaluating the performance of the wireless link used for control and telemetry for urban search and recue robots. These methods are based on identification and evaluation of performance metrics that describe impairments to the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901365

46. Integrated Broadband Lumped-Element Symmetrical-Hybrid N-way Power Dividers
Topic: Electromagnetics
Published: 6/7/2009
Authors: Mike Elsbury, Paul David Dresselhaus, Samuel Paul Benz, Zoya Popovic
Abstract: This paper presents a monolithically-integrated, broadband, lumped-element, symmetrical-hybrid power divider centered at 20 GHz which was designed and fabricated to uniformly distribute power to arrays of Josephson junctions for superconducting volta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901531

47. AIR-BRIDGE INTEGRATED STUB FILTER FOR SUB-MILLIMETER WAVE APPLICATIONS
Topic: Electromagnetics
Published: 6/1/2009
Authors: Dazhen Gu, Fernando Rodriquez-Morales, Sigfrid Yngvesson
Abstract: We report a coplanar waveguide notch filter with an integrated air-bridge, designed for operation at sub-millimeter wave frequencies and cryogenic temperatures. The filter is built with a planar slot- ring antenna, which is in turn loaded with a s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33179

48. Uncertainty Analysis for Noise-Parameter Measurements at NIST
Topic: Electromagnetics
Published: 4/9/2009
Author: James Paul Randa
Abstract: The uncertainty analysis is presented for NIST measurements of noise parameters of amplifiers and transistors, in both connectorized (coaxial) and on-wafer environments. We treat both the X-parameters, which are based on the wave representation of t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33026

49. Variable Termination Unit for Noise-Parameter Measurements
Topic: Electromagnetics
Published: 4/1/2009
Authors: Dazhen Gu, David K Walker, James Paul Randa
Abstract: NIST has upgraded its measurement capability of noise parameters on low-noise amplifiers with a variable termination unit (VTU) in the 1 to 12.4 GHz frequency range. Such a unit allows improved time efficiency and accuracy in the noise-temperature me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33050

50. EEEL Technical Accomplishments
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7568
Topic: Electromagnetics
Published: 3/30/2009
Author: Erik M Secula
Abstract: This document describes the technical work of the Electronics and Electrical Engineering Laboratory. In this report, you will find that EEEL researchers are developing the world's most advanced sensors, providing advanced gamma ray imagers for astro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901701



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