Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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RF and Microwave Power Standards from 10 MHz to 40 GHz over Decades

  • Kang, Tae-Weon (Division of Physical Metrology, Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Kwon, Jae-Yong (Division of Physical Metrology, Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Park, Jeong-Il (Division of Physical Metrology, Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Kang, No-Weon (Division of Physical Metrology, Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science)
  • Received : 2017.11.11
  • Accepted : 2018.01.17
  • Published : 2018.04.30
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Abstract

Radio frequency (RF) and microwave power is one of the key quantities in the framework of electromagnetic measurement standards. Therefore, the stability of the power standard is essential to users' reliable measurements in various areas. Coaxial and waveguide thermistor mounts are used as transfer standards of RF and microwave power. Over decades, the effective efficiencies of thermistor mounts have been measured using coaxial and waveguide microcalorimeters in the frequency range of 10 MHz-40 GHz. The measurement uncertainty of the effective efficiency is evaluated. Results show that the power standards have been well maintained within the measurement uncertainty.

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References

  1. R. F. Clark, "The microcalorimeter as a national microwave power standard," Proceedings of the IEEE, vol. 74, no. 1, pp. 102-104, 1986. https://doi.org/10.1109/PROC.1986.13411
  2. G. F. Engen, "A refined X-band microwave microcalorimeter," Journal of Research of the National Bureau of Standards, vol. 63C, no. 1, pp. 79-82, 1959.
  3. H. Bayer, "Mikrokalorimeter-Prazisions-MeBplatz zur Bestimmung des effektiven Wirkungsgrades von Bolometer-MeBkopfen im Frequenzbereich von 8.2 bis 12.4 GHz," PTB-Mitteilungen, vol. 80, pp. 261-269, 1970.
  4. N. S. Chung, J. Shin, H. Bayer, and R. Honigbaum, "Coaxial and waveguide microcalorimeters for RF and microwave power standards," IEEE Transactions on Instrumentation and Measurement, vol. 38, no. 2, pp. 460-464, 1989. https://doi.org/10.1109/19.192327
  5. T. W. Kang, N. S. Chung, R. Honigbaum, J. Rühaak, and U. Stumper, "K- and Ka-band waveguide microcalorimeters for microwave power standards," IEEE Transactions on Instrumentation and Measurement, vol. 46, no. 6, pp. 1247-1250, 1997. https://doi.org/10.1109/19.668264
  6. G. H. Bryant, Principles of Microwave Measurements. London: The Institution of Engineering and Technology, 1993.
  7. N. T. Larsen, "A new self-balancing dc-substitution RF power meter," IEEE Transactions on Instrumentation and Measurement, vol. 25, pp. 343-347, 1976.
  8. J. Y. Kwon, T. W. Kang, J. H. Kim, and N. W. Kang, "Development of a type-N coaxial microcalorimeter for RF and microwave power standards at KRISS," IEEE Transactions on Instrumentation and Measurement, vol. 64, no. 6, pp. 1520-1526, 2015. https://doi.org/10.1109/TIM.2015.2408802
  9. ISO/IEC Guide 98-3:2008, Uncertainty of Measurement - Part 3: Guide to the Expression of Uncertainty in Measurement (GUM), International Organization for Standardization, 2008.
  10. Calibration and Measurement Capabilities (CMCs) [Online]. Available: https://kcdb.bipm.org/appendixC/.
  11. M. P. Weidman, Direct Comparison Transfer of Microwave Power Sensor Calibrations. Gaithersburg, MD: National Institute of Standards and Technology (NIST), 1996.

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