Output device of TE1,1 mode gyro traveling wave tube

Abstract

The invention discloses an output device of a TE1,1 mode gyro traveling wave tube, and belongs to the technical field of power sources in the high-power millimeter wave technology. The output device comprises a circular-elliptical waveguide transition section, an elliptical waveguide section, an elliptical-circular waveguide transition section and a circular waveguide radiator connected in sequence, wherein the inner walls of the four are in smooth transition and the waveguide center lines are coaxial. The output device can directly output Gaussian beams, does not need an external over-mode waveguide mode converter, is beneficial to realizing broadband, high-efficiency and high-power operation of the high-power millimeter wave gyro traveling wave tube, is also beneficial to compactness and miniaturization of a high-power millimeter wave application system, can effectively output linearly polarized Gaussian beams, and does not need an external mode converter, a circular polarizer and other devices any more.

Description

technical field [0001] The invention belongs to the technical field of power sources in the high-power millimeter wave technology, and in particular relates to a lateral output device of a convoluted traveling wave tube capable of directly outputting linearly polarized Gaussian beams. Background technique [0002] The gyrotron is a high-power broadband millimeter-wave amplifier with the characteristics of broadband, high power, high gain and high efficiency. It has a wide range of application markets in communications, radar, precision guidance and material processing. In the realization process of the cyclotron TWT, the suppression of parasitic resonance (including reflection caused by input and output and local structure, instability of the working mode in the cut-off frequency domain, return wave resonance, etc.) is the most critical link in the design process. TE 1,1 As the fundamental mode of the circular waveguide, the mode not only helps to reduce the mode competitio...

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Problems solved by technology

[0004] In order to solve the TE 1,1 The output mode of the mode convoluted traveling wave tube is not conducive to direct application and long-distance transmission, and the corresponding high-power millimeter-wave transmission system is difficult to achieve high efficiency, compactness, and miniaturization. The present invention proposes a An output device of a convoluted traveling wave tube, which can effectively output linearly polarized Gaussian beams, and no longer needs external mode converters, circular polarizers and other devices

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