Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Direct Comparison System for Power Calibration up to 67 GHz*



Thomas M. Wallis, Thomas P. Crowley, Denis X. LeGolvan, Ronald A. Ginley


A direct comparison system for calibration of power sensors with 1.85 mm precision coaxial connectors up to 67 GHz has been developed. The comparison is implemented in two frequency bands. Between 10 MHz and 50 GHz, power sensors with 2.4 mm coaxial connectors adapted to 1.85 mm serve as transfer standards while between 50 GHz and 67 GHz, WR15 waveguide power sensors adapted to 1.85 mm serve as transfer standards. The design and implementation of the system, a measurement of the effective efficiency of a commercial 1.85 mm thermoelectric sensor, and uncertainty analysis are discussed.
Proceedings Title
Conference on Precision Electromagnetic Measurements
Conference Dates
July 1-6, 2012
Conference Location
Washington, DC


power measurement, measurement standards, microwave sensors, metrology, effective efficiency, calibration


Wallis, T. , Crowley, T. , LeGolvan, D. and Ginley, R. (2012), A Direct Comparison System for Power Calibration up to 67 GHz*, Conference on Precision Electromagnetic Measurements, Washington, DC, [online], (Accessed June 19, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created July 1, 2012, Updated January 27, 2020