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Thermal Noise Metrology Project Talks

Recent Noise Presentations 

"Variable Termination Unit for Noise-Parameter Measurement"
D. Gu, D.K. Walker, and J. Randa, Conference on Precision Electromagnetic Measurements (CPEM-2008), Broomfield, CO, June, 2008.

"Simulations of Noise-Parameter Verification Using Cascade with Isolator or Mismatched Transmission Line"
J. Randa, K. Wong, and R. Pollard, 70th ARFTG Microwave Measurements Conference; Tempe, AZ; Nov. 30, 2007.

"Standards Development for Remote Sensing at Microwave and Terahertz Frequencies"
J. Randa, E. Gerecht, D.K. Walker*, A. Cox, D. Gu, L. You, and R.L. Billinger, 2007 CALCON Technical Conference; Logan, UT; September 11, 2007.

"Noise Measurements and Remote-Sensing Radiometry (at NIST)"
J. Randa, International Conference on Measurement and Metrology (ICMM-2007); Beijing, China; Sept. 6, 2007.

"Standards Development for Remote Sensing at Microwave and Terahertz Frequencies"
J. Randa, E. Gerecht, D.K. Walker, A. Cox, D. Gu, L. You, and R.L. Billinger, International Conference on Measurement and Metrology (ICMM-2007); Beijing, China; Sept. 5, 2007.

"Thermal Noise Measurements"
J. Randa, NIST/ARFTG Short Course, Broomfield, CO, November 2006.

"Proposed Development of a National Microwave Brightness-Temperature Standard"
J. Randa, A.E. Cox, and D.K. Walker, International Geoscience and Remote Sensing Symposium (IGARSS-2006), Denver, August 2006.

"Terahertz Radiometer Design for Traceable Noise-Temperature Measurements"
E. Gerecht, D. Gu, J. Randa, D.K. Walker, and R.L. Billinger, Conference on Precision Electromagnetic Measurements (CPEM-2006), Torino, Italy, July 2006.

"On-Wafer Noise-Parameter Measurements at NIST"
D.K. Walker and J. Randa, Conference on Precision Electromagnetic Measurements (CPEM-2006), Torino, Italy, July 2006.

"Reverse Noise Measurement and Its Use in Device Characterization"
J. Randa, T. McKay, S.L. Sweeney, D.K. Walker, L. Wagner, D.R. Greenberg, J. Tao, and G.A. Rezvani, Radio Frequency Integrated Circuits (RFIC) Symposium, San Francisco, June 2006.

"On-Wafer Noise-Parameter Measurementsand Uncertainties at NIST"
J. Randa and D.K. Walker, Workshop on Noise Measurement and Modeling for CMOS, RFIC/IMS, San Francisco, June 2006.

"On-Wafer Noise-Parameter Measurements, Checks, and Uncertainties at NIST"
J. Randa, International Conference on Microelectronic Test Structures (ICMTS), Austin, TX, March 2006.

"Interlaboratory Comparison of Noise-Parameter Measurements on CMOS Devices with 0.12 um Gate Length"
J. Randa, S.L. Sweeney, T. McKay, D.K. Walker, D.R. Greenberg, J. Tao, J. Mendez, G.A. Rezvani, and J.J. Pekarik, 66th ARFTG Conference, Washington, DC, December 2005.

"Thermal Noise Measurements"
J. Randa, NIST/ARFTG Short Course, Washington, DC, November 2005.

"Precision Measurement of Amplifier Noise Temperatures Below 5 K"
J. Randa, E. Gerecht, D. Gu, and R.L. Billinger, Division Seminar, NIST, Boulder, CO; August 2005.

"Amplifier and Transistor Noise-Parameter Measurements at NIST"
J. Randa, D.K. Walker, and R.L. Billinger, URSI National Radio Science Meeting, Boulder, CO; January 2005.

"Noise-Parameter Measurements at NIST"
J. Randa, Division Seminar; NIST, Boulder, CO; October 2004.

"Standard Radiometers and Targets for Microwave Remote Sensing"
J. Randa, A.E. Cox, D.K. Walker, M. Francis, J. Guerrieri, and K. MacReynolds; IGARSS-2004; Anchorage, AK; September 2004.

"Errors Due to the Reflectivity of Calibration Targets"
J. Randa, D.K. Walker, A.E. Cox, and R.L. Billinger; IGARSS-2004; Anchorage, AK; September 2004.

"Linking Microwave Remote-Sensing Measurements to Fundamental Noise Standards"
J. Randa, D.K. Walker, M. Francis, K. MacReynolds, A. Cox, and J. Guerrieri; CPEM-2004; London, UK; June 2004.

"Radiometric Measurements of a Near-Ambient, Variable-Temperature Noise Standard"
G. Free, J. Randa, and R.L. Billinger;CPEM-2004; London, UK; June 2004.

"Amplifier Noise-Parameter Measurement Checks and Verification"
J. Randa and D.K. Walker; 63rd ARFTG Conference; Ft. Worth, TX; June 2004.

"Development of Remote-Sensing Microwave Radiometer Calibration Methods and Tools at NIST,"
D. Walker, J. Randa, R.Billinger, and A.E. Cox; URSI National Conference; Boulder, CO; January 2004.

"Thermal Noise Measurements,"
J. Randa, NIST/ARFTG Short Course, Boulder, CO, December 2003.

."Microwave Radiometry and Noise Standards at NIST,"
J. Randa, RF Technology Division Seminar, NIST-Boulder, April 2003.

"Thermal Noise Measurements,"
D. Walker, NIST/ARFTG Short Course, Washington, DC, November 2002;
J. Randa, NIST/ARFTG Short Course, San Diego, November 2001.

"NIST Project on Standard Terminology for Microwave Radiometry," (1.2 MB)
J. Randa, Second International Workshop on Microwave Radiometer Calibration, Barcelona, October 2002.

"Tunnel Diode Detector Nonlinearity Characterization and Minimization," (0.9MB)
D. Walker & J. Piepmeier, Second International Workshop on Microwave Radiometer Calibration, Barcelona, October, 2002..

"Simulations of Noise-Parameter Uncertainties," (1.5 MB)
J. Randa, International Microwave Symposium, Seattle, June 2002.

"Noise-Parameter Uncertainties from Monte Carlo Simulations,"
J. Randa and W. Wiatr, 2001 British Electromagnetic Measurement Conference, Harrogate, November 2001.

"Noise-Temperature Measurements at NIST," (7.7 MB)
J. Randa, First International Workshop on Microwave Radiometer Calibration, Univ. Maryland, October 2000.

"Multiport Noise Characterization and Differential Amplifiers,"
J. Randa, 55th ARFTG Conference, Boston, June 2000..

"NFRad—A Review of the new NIST noise measurement system," (10.7 MB)
C. Grosvenor, J. Randa, and R.L. Billinger, 55st ARFTG Conference, Boston, June 2000

"Underlying Principles, Design, Construction, Test, and Uncertainties of the New NIST Coaxial Radiometer NFRad,"
J. Randa, Lectures at Productivity and Standards Board, Singapore, May 2000.

Part I. Theory and Background

Part II. NFRad Design and Construction

Part II Photos (18.1 MB)

Part III. Operation, Testing, and Uncertainties