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41. A Physical Explanation of Angle-Independent Behavior of Metafilms/Metasurfaces
Topic: Electromagnetics
Published: 1/6/2010
Authors: Joshua A Gordon, Christopher L Holloway

42. Progress Toward Corrugated Feed Horn Arrays in Silicon
Topic: Electromagnetics
Published: 12/16/2009
Authors: Joseph Wright Britton, Ki W. Yoon, James A Beall, Daniel T Becker, Hsiao-Mei Cho, Gene C Hilton, Michael D. Niemack, Kent D Irwin
Abstract: We are developing monolithic arrays of corrugated feed horns fabricated in silicon for dual-polarization single mode operation at 90, 145 and 220 GHz. The arrays consist of hundreds of platelet feed horns assembled from gold coated stacks of micromac ...

43. 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 ...

44. Transport in Electromagnetic Metrology Based on Nonequilibrium Statistical Mechanics
Topic: Electromagnetics
Published: 11/3/2009
Authors: James R. Baker-Jarvis, Jack T 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 ...

45. 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 ...

46. 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 ...

47. 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 ...

48. 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 ...

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 ...

50. 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 ...

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