Measurements on the Frequency Entrainment of a Reflex Klystron

Abstract

The bandwidth of frequency entrainment of a reflex klystron was measured in relation to the power ratio of an applied external signal and the output of of the klystron at its normal operation. Measurements were also carried out on the output power of a frequency-entrained reflex klystron both for the various frequency deviations of signal frequency from that of the klystron at its normal operation and for the various power ratios. As a supplement to the theory previously reported by the authors, an analysis is given for the case when the klystron does not operate at the center of an electronic mode in the absence of an external signal. It is shown that the theory is in rather good agreement with the experimental results.