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A high output power gyro-traveling wave tube (Gyro-TWT) on Ku band is designed and hot tested. The experiment test presents a 420kW output power, more than 1.6GHz (10%) −1dB bandwidth, about 35dB saturated gain and 23% efficiency in a stable working condition. To increase the power capacity TE01 mode is chosen as the working mode, and a 68kV 27A beam is used to generate the high output power. A high...
The paper introduce a particle simulation of a Q-band gyro-TWT operating in the circular waveguide TE01 mode at the fundamental cyclotron harmonic. The simulation predict that it can produce an output peak power over 265 kW at 46.5GHz, corresponding to a 37.8% efficiency, 47.2 dB gain, the 3dB bandwidth is about 3.5GHz. The potential backward wave oscillations (BWOs) TE11 TE21 and TE02 spurious modes...
Design techniques and experimental results are presented on a Ku-band ${\rm TE}_{11}$ mode gyro-traveling wave tube. The hot test of this amplifier gives more than 153-kW output power, 2.3-GHz bandwidth (14%), 41-dB saturated gain, and 20% efficiency driven by a 63 kV, 12-A electron beam with a pitch angle $({\rm v}_{t}{\rm v}_{z})$ of 1.2, and velocity spread of 5%. A linear polarized ${\rm TE}_{11}$ ...
Based on the theory of small aperture coupling, a Ka-band broadband TE01○ - TE10□ multi-aperture array directional coupler is designed to measure the output power and monitor the spectrum for Gyro-TWT. The radius of circular waveguide and the distance between adjacent coupling apertures are determined according to the principle of forward superposition and backward offset. Some numerical calculations...
The design and experimental study of a 34GHz gyro-TWT amplifier operating in the circular TE01 mode at the fundamental cyclotron harmonic are presented. The interaction circuit in this experiment consisted of periodic dielectric loaded circuits that provided the required loss for stable operation. The potential backward wave oscillation interactions involving the spurious modes TE11, TE21, and TE02...
A Ku-Band high power Gyro-TWT is designed and the experiment hot test has been finished. The operating mode is TE11 mode. A linear polarized input coupler is used to introduce the input power. The start-oscillation current of operating TE11 mode and the backward TE21 mode is studied by the linear, non-linear self-consistent theory and 3D PIC simulation. The loss ceramics are used in the HF circuit...
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