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The frequency of the output radiation of a gyrotron can be unstable because of the fluctuations of the power supply voltage. For several applications of the gyrotrons frequency tunability or frequency stabilization are required. The usual way of frequency variation or stabilization is the control of the accelerating or the modulating voltage [1, 2]; while there exist some other ways to stabilize the frequency of the gyrotron [3] that seem to be promising. In our work we investigate the frequency stabilization of a gyrotron by weak reflection from the nonresonant load. The advantages of his method are the simplicity of reflector manufacturing and absence of complex and expensive fast-acting power supplies.

Influence of weak reflection from a nonresonant load on the operation frequency of the 28 GHz technological gyrotron