A Standard Attenuator and the Precise Measurement of Attenuation
- 1 March 1964
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. IM-13 (1), 33-44
- https://doi.org/10.1109/tim.1964.4313366
Abstract
An attenuator calibration system is described consisting of a waveguide-beyond-cutoff attenuator operating at 31.25 Mc and electronic equipment designed for parallel-substitution, series-substitution, and heterodyne measurements. Radio-frequency power is supplied by a crystal-controlled signal generator, stabilized so that variations in the power output do not exceed 0.001 db per hour. Measurements of a 10-db step made by the standard attenuator, and by two other methods, agree to within 0.001 db. A number of possible sources of error are examined including nonlinearity in microwave mixers.Keywords
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