Multiple waveguide output structure for gyrotron amplifier

Abstract

The invention discloses a multiple waveguide output structure for a gyrotron amplifier, which comprises a composite cavity, a plurality of rectangular coupling holes, a first vertical wall, a second vertical wall, a high-order mode circular waveguide, a smaller circular waveguide, a plurality of rectangular coupling holes and a plurality of output waveguides, wherein the composite cavity comprises an internal cylindrical cavity and an external coaxial cavity which are in a coaxial line, the internal cylindrical cavity is isolated from the external coaxial cavity through a common wall, the rectangular coupling holes are cyclically arranged on the common wall and the external wall of the external coaxial cavity, the first vertical wall and the second vertical wall are positioned at both ends of the axial direction of the internal cylindrical cavity and the external coaxial cavity and are mutually vertical to the common wall, the high-order mode circular waveguide is connected to the first vertical wall, the smaller circular waveguide is connected to the second vertical wall, and the output waveguides are coupled with the rectangular coupling holes in the external coaxial cavity. The invention realizes the transformation from a millimetric wave band high-order mode to a single basic-order mode operation, solves the problem of insufficient capacity of single waveguide output power, improves the capacity of output power, is suitable for the linearly polarized output of the basic-order mode and effectively inhibits the oscillation of a spurious mode at the same time.

Description

technical field [0001] The invention relates to the technical field of electric vacuum devices, in particular to a multi-waveguide output structure for a cyclotron amplifier. Background technique [0002] A swing amplifier is usually operated in a higher order mode to increase its output power capability. At present, there are two main output modes of this amplifier: one is to directly output the high-order mode electromagnetic wave generated by the gyro amplifier from the axial direction; the other is to use a built-in or external quasi-optical mode converter to convert the high-order mode into quasi-optical Gaussian beam output. [0003] However, the high-order mode is not a linear polarization mode and is not suitable as a transmission mode for common electronic systems; the quasi-optical Gaussian beam is not a single mode and cannot be applied to electronic systems working in a single working mode, thus limiting this high-order mode. The application range of power mill...

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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a multi-waveguide output structure for the cyclotron amplifier, to realize the conversion of the millimeter-wave band high-order mode to a single fundamental mode, solve the problem of insufficient output power capacity of a single waveguide, and improve Output power capacity, adapting to the linear polarization output of the fundamental mode, while effectively suppressing the parasitic mode oscillation

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