PTB-NIST bilateral comparison of microwave noise power in coaxial transmission line
暂无分享,去创建一个
The Physikalisch-Technische Bundesanstalt and the National Institute of Standards and Technology have compared microwave noise power in coaxial transmission lines. Each laboratory measured two solid-state noise sources at 2.0 GHz, 4.0 GHz, and 8.0 GHz relative to their primary thermal noise standards. The agreement between laboratories is better than 0.07 dB, which is within the stated uncertainties of the two services, namely +or-0.06 dB for NIST, and +or-0.04 dB for PTB (confidence level: 0.95). >
[1] Wolfgang Kessel,et al. A primary broad-banded coaxial thermal noise standard for the range 100 MHz to 10 GHz , 1987, IEEE Transactions on Instrumentation and Measurement.
[2] George J Counas. 2.0 GHz to 4.0 GHz automated radiometer operation and service manual , 1984 .
[3] Neil T. Larsen,et al. A new self-balancing DC-substitution RF power meter , 1976, IEEE Transactions on Instrumentation and Measurement.
[4] Improvements in the accuracy of a new coaxial thermal noise standard , 1989 .