Determining the CW Power Rating of Coaxial Components

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  • Author: Andrew Wierback
When evaluating the power handling of coaxial lines, a common analysis has been based upon the peak power capacity of the line as a function of dielectric resistance. However, continuous wave (CW) power cannot be accurately evaluated based upon a peak power rating. CW power handling is a function of the energy transfer capacity of the coaxial line and ambient environment rather than its dielectric resistance. The evaluation of a coaxial line using a combination of thermodynamic and microwave principles will provide the base of knowledge necessary to accurately calculate its CW power capacity.