A LOW COST CALIBRATION SYSTEM FOR HIGH POWER MICROWAVE SOURCES

A. Piotrowski

Abstract


A simple and low cost flow calorimeter for measurement of microwave power is described. The calorimeter consists of a section of a rectangular waveguide in which microwaves are absorbed by the flowing water. The geometry of the water flowing through the waveguide ensures that only a small fraction of the total microwave power is reflected. The microwave power is calculated from the temperature rise of the water and its mass flow rate. The calorimeter was tested for the pulse and CW microwave power range from 200 W to 1000 W and an accuracy of 5% was achieved.

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References


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