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The loss characteristics of several loss materials to the backward-wave oscillations modes TE11, TE21 and the operating mode TE01 in Gyrotron traveling wave tube amplifier (Gyro-TWT) are presented in this paper. Effects of these loss materials on the output characteristics of Gyro-TWT are analyzed according to the experimental measurements.
The lossy ceramics can improve the output characteristics of the Gryo-TWT. In the paper, a Gyro-TWT based on lossy ceramics is introduced, the operation frequency 34 GHz, peak power 160Kw, bandwidth 2.4GHz, has been obtained with 65Kv beam voltage and 8A beam current.
The design and experimental study of a Ka-band gyrotron-travelling-wave tube (gyro-TWT) amplifier operating in the circular TE01 mode at fundamental cyclotron harmonic are presented. A mode-selective technique was adopted in the interaction circuit of the gyro-TWT to suppress spurious modes TE11 and TE21. A saturated peak power of 86 kW was obtained with saturated gain of 33 dB , an efficiency of...
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