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Displaying records 21 to 30 of 54 records.
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21. Impact of RF Interference between a Passive RFID System and a Frequency Hopping Communications System in the 900 MHz ISM Band
Topic: Electromagnetics
Published: 7/25/2010
Author: Michael R Souryal
Abstract: We present experimental measurements and analysis of RF interference between a passive RFID system and a generic frequency hopping communications system in the 902 928 MHz ISM radio band. Interference in both directions is considered, RFID to communi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904764

22. Interference and Coexistence of Wireless Systems in Critical Infrastructure
Series: Technical Note (NIST TN)
Report Number: 1885
Topic: Electromagnetics
Published: 7/7/2015
Authors: Galen H Koepke, William F Young, John M Ladbury, Jason B Coder
Abstract: We examine interference and coexistence testing issues, test methods, and the need to update and develop new test methodologies related to the use of wireless devices in critical infrastructure systems. A case study on interference is presented ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917616

23. International Comparison of Noise-Temperature Measurements at 2, 4, and 12 GHz
Topic: Electromagnetics
Published: 7/1/1998
Authors: James Paul Randa, J. Achkar, F. I Buchholz, T. Colard, D. Schubert, M. Sinclair, John Rice, G. S. Williams
Abstract: We report results of a recent international comparison of thermal noise-power measurements, performed under the auspices of CIPM/CCE. The noise temperatures of two solid-state sources with GPC-7 connectors were measured at 2, 4, and 12 GHz. All ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=24272

24. International Comparison of Thermal Noise-Temperature Measurements at 2, 4 and 12 GHz
Topic: Electromagnetics
Published: 4/1/1999
Authors: James Paul Randa, J. Achkar, F. IM Bucholz, T. Colard, John Rice, D. Schubert, M. Sinclair, G. S. Williams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=20887

25. International Comparison, Final Summary Report
Topic: Electromagnetics
Published: 11/1/2000
Author: James Paul Randa
Abstract: An international comparison of noise temperature of coaxial (GPC-7) sources at 2 GHz, 4 GHz and 12 GHz has been completed. Participating laboratories included the Physikalisch-Technische Bundesanstalt (PTB); the Bureau National de Metrologie-Laborato ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=29776

26. MIMO Capacity in 2-D and 3-D Isotropic Environments
Topic: Electromagnetics
Published: 5/21/2013
Authors: Ryan J. Pirkl, Catherine A Remley
Abstract: We analyze the distribution of MIMO channel capacity for different antennas in 2-D and 3-D statistically isotropic environments. These represent possible test environments that may be generated by multi-probe anechoic and reverberation chambers, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910357

27. Measurement of orbital asymmetry and strain in Co^d90^Fe^d10^/Ni multilayers and alloys: Origins of perpendicular anisotropy
Topic: Electromagnetics
Published: 2/13/2013
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva
Abstract: We use broadband ferromagnetic resonance spectroscopy and x-ray diffraction to investigate the fundamental origin of perpendicular anisotropy in Co^d90^Fe^d10^/Ni multilayers. By careful evaluation of the spectroscopic {I}g{/I}-factor, we determine ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913103

28. Microwave Characterization of Transparent Conducting Films
Topic: Electromagnetics
Published: 5/26/2011
Authors: Jan Obrzut, Oleg A Kirillov
Abstract: The high frequency conductivity of thin metallic and graphitic nano-films attracts interest due to many potential applications in spin electronics, electromagnetic shielding, flexible antennas, displays, and solar cells. The surface morphology of thi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907453

29. Monte Carlo Simulation of Noise Parameter Uncertainties
Topic: Electromagnetics
Published: 11/1/2002
Authors: James Paul Randa, Wojciech Wiatr
Abstract: We present results for uncertainties in noise-parameter measurements, obtained using a Monte Carlo simulation of the measurements. Sets of data were generated to simulate measurements on a low-noise amplifier, with given uncertainties in the underlyi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=12549

30. Multiport Noise Characterization and Differential Amplifiers
Topic: Electromagnetics
Published: 6/1/2000
Author: James Paul Randa
Abstract: I address the issue of the definition and measurement of noise figure and parameters to characterize multiport devices, particularly differential amplifiers. A parameterization in terms of the noise matrix appears to be the most practical. The nois ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=24909



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