Dennis G. Camell

National Institute of Standards and Technology

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Galen H. Koepke

National Institute of Standards and Technology

Robert T. Johnk

Institute for Telecommunication Sciences

Christopher L. Holloway

National Institute of Standards and Technology

Chriss A. Grosvenor

National Institute of Standards and Technology

Kate A. Remley

National Institute of Standards and Technology

David R. Novotny

Czech Technical University in Prague

William F. Young

Mayo Clinic in Arizona

John M. Ladbury

National Institute of Standards and Technology

Catherine A. Remley

National Institute of Standards and Technology

Perry F. Wilson

Leibniz University Hannover

Cooperative Institutions

National Institute of Standards and Technology

United States Department of Commerce

National Institute of Standards

Institute for Telecommunication Sciences

Communications Technology Laboratory

Georgia Institute of Technology

New York City Fire Department

Chalmers University of Technology

United States Government Publishing Office

NTL Institute for Applied Behavioral Science

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NIST Micronutrients Measurement Quality Assurance Program Winter 2012 Comparability Studies:

David L. Duewer Jeanice B. Thomas Dennis G. Camell

The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-and water-soluble vitamins and carotenoids in human serum and plasma.This report describes the design of and results for the Winter 2012 MMQAP measurement comparability improvement studies: 1) Round Robin LXXI Fat-Soluble Vitamins and Carotenoids in Human Serum and 2) Round Robin 36 Total Ascorbic Acid in Human Serum.The materials for both studies were shipped to participants in mid-January 2012; participants were requested to provide their measurement results by

Comparability

NIST

10.6028/nist.ir.7880

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Citations (1)

International comparison GT/RF 86-1 electric field strengths: 27 MHz to 10 GHz

IEEE Transactions on Electromagnetic Compatibility (2000)

Motohisa Kanda Dennis G. Camell J.P.M. de Vreede Joseph Achkar M. Alexander

This paper describes the international comparison of electric field strength measurements at frequencies between 27 MHz and 10 GHz (GT/RF 86-1). The participating laboratories were NIST, Pilot Laboratory, USA, National Physical Laboratory, U.K., NMi Van Swinden Laboratorium, the Netherlands, Institute Elettrotecnico National, Italy, Laboratoire Central des Industries Electriques, France, Electrotechnical Laboratory, Japan, Korea Research Institute of Standards and Science, Korea, and Technical University of Wroclaw, Poland.

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10.1109/15.852413

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Electrically short dipoles with a nonlinear load, a revisited analysis

IEEE Transactions on Electromagnetic Compatibility (2002)

John M. Ladbury Dennis G. Camell

We reexamine the characteristics of electrically short dipoles with nonlinear loads and, specifically, the early work of Motohisa Kanda (1980, 1983). Although this topic has been examined in great detail in the past, some inconsistencies between numerical and analytical results are apparent, and these have not been previously addressed. We show that these inconsistencies were due to only periodic sampling of the analytic solution, and an insufficient number of iterations in the numerical solutions, and we give corrected results. Additionally, some of the more significant analytical results, which were once thought to be impractical due to their complexity, are numerically implemented. We also show that a simple approximation accurately describes the behavior of these electrically short dipoles over a wide range of frequency and amplitude.

10.1109/15.990709

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Citations (24)

Measuring Antennas above 1 GHz

Michael J. Windier Dennis G. Camell

10.23919/emc.2001.10791952

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Radio Wave Signal Propagation Into Large Building Structures Part 1: CW Signal Attenuation and Variability | NIST

IEEE Transactions on Antennas and Propagation (2010)

Christopher L. Holloway William F. Young Galen H. Koepke Dennis G. Camell Catherine A. Remley

NIST

SIGNAL (programming language)

Radio signal

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Across-the-road photo traffic radars: new calibration techniques

Claude Weil Dennis G. Camell David R. Novotny Robert T. Johnk

We discuss simulator units for calibrating across-the-road Doppler traffic radar transceivers used in enforcement of highway speed limits. Two units of very similar design were developed, one operating at K-band (24 GHz) and the other at Ka-band (35 GHz). The signal received from the radar transmitter is frequency-modulated at rates that correspond to the expected Doppler shift for approaching and receding vehicles travelling at speeds of 25 to 200 km/h. The modulated signal is subsequently retransmitted back to the radar receiver, which demodulates it and then displays the simulated speed. The required calibration accuracy is 1.6 km/h at 90 km/h.

Transceiver

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3D radar

10.1109/mikon.2004.1358507

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Measurements to Support Public Safety Communications: Attenuation and Variability of 750 Mhz Radio Wave Signals in Four Large Building Structures

Dennis G. Camell Sander J. Floris Andrea Garuti Chriss A. Grosvenor Christopher L. Holloway

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Comparison of Radiated Emission Measurements for 500 MHz To 2 GHz in Various EMC Facilities