An absolute method for calibrating microwave attenuators
- 1 January 1962
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the IEE - Part B: Electronic and Communication Engineering
- Vol. 109 (23S) , 796-800
- https://doi.org/10.1049/pi-b-2.1962.0135
Abstract
This method of calibrating a variable attenuator is based on the attenuation through a 3 dB coupler; an iterative process is used to take into account the absorption loss and the unequal power split of the coupler.Details are given of the procedure used for calibrating a particular attenuator, and the method of calibration at intervals of attenuation closer than the nominal 3 dB of the coupler is described. An estimate is made of the possible accuracy of the calibration, which, in the case described, was ±0.4 dB in 40 dB at a frequency of 6.2 Gc/s.Keywords
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