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You searched on: Topic Area: Electromagnetics

Displaying records 41 to 50 of 54 records.
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41. 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

42. 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

43. Design and Testing of NFRad - A New Noise Measurement System
Series: Technical Note (NIST TN)
Report Number: 1518
Topic: Electromagnetics
Published: 3/1/2000
Authors: Chriss A. Grosvenor, James Paul Randa, Robert L. Billinger
Abstract: The NIST Noise project has constructed and tested a new, automated, coaxial (GPC-7) radiometer for the measurement of noise sources in the 8-12 GHz frequency band. It is an isolated, total-power radiometer that relies on lookup tables for relevant re ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=6264

44. Comparison of Adapter Characterization Methods
Topic: Electromagnetics
Published: 12/1/1999
Authors: James Paul Randa, Wojciech Wiatr, Robert L. Billinger
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=21880

45. On-Wafer Measurements of Noise Temperature
Topic: Electromagnetics
Published: 12/1/1999
Authors: James Paul Randa, Robert L. Billinger
Abstract: The NIST Noise Project has developed the theoretical formalism and experimental methods for performing accurate noise-temperature measurements on wafer. This report summarizes the theoretical formulation and describes the design, methods, and results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=27649

46. Comparison of Methods for Adapter Characterization
Topic: Electromagnetics
Published: 6/1/1999
Authors: James Paul Randa, Wojciech Wiatr, Robert L. Billinger
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=4428

47. 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

48. Characterization and Applications of On-Wafer Diode Noise Sources
Topic: Electromagnetics
Published: 12/1/1998
Authors: Lawrence P. Dunleavy, James Paul Randa, David K Walker, Robert L. Billinger, John Rice
Abstract: A set of wafer-probeable diode noise source transfer standards are characterized using on-wafer noise-temperature methods developed at the National Institute of Standards and Technology (NIST), Boulder, CO.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=5598

49. 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

50. Uncertainties in NIST Noise-Temperature Measurements
Series: Technical Note (NIST TN)
Report Number: 1502
Topic: Electromagnetics
Published: 3/1/1998
Author: James Paul Randa
Abstract: Uncertainty analyses are presented for NIST measurements of noise temperature. All systems currently used in NIST calibrations of thermal-noise sources are treated. These include tuned systems for 30 and 60 MHz, coaxial total-power radiometers for 1 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=11498



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