Novel multi-hole ventilation circular waveguide for transmitting high power microwave and millimeter waveguide

Abstract

The invention discloses a novel multi-hole ventilation circular waveguide for transmitting high power microwave and millimeter wave, and belongs to the technical field of high power microwave and millimeter wave devices. The structure of the novel multi-hole ventilation circular waveguide for transmitting high power microwave and millimeter wave is characterized in that a plurality of rows of circular ventilating holes are arranged on a waveguide wall of the circular waveguide in parallel at intervals. The ventilating holes enable the air in the waveguide to communicated with the external atmosphere for realize ventilation. After the ventilation environment of the waveguide is improved, air flow in the waveguide is improved, thus improving the convection heat loss capability of the surface of the output window of a large power vacuum device so as to achieve the aim of improving the power capacity of the output window, and reducing the ignition probability of microwave in the waveguide, and also improving the power threshold value of the output window damage caused by rising of air pressure because microwave breaks down ignition to cause air expansion, and indirectly improving the power capacity of the output window.

Description

technical field [0001] The invention belongs to the technical field of high-power microwave and millimeter-wave devices, in particular to a metal circular waveguide with a new structure for transmitting high-power microwave and millimeter-wave in the output system of a cyclotron traveling wave tube. Background technique [0002] Waveguide is a component widely used in the field of microwave and millimeter wave engineering technology. The role of the waveguide is to guide microwaves and millimeter waves to propagate in a specific direction. Common waveguides include regular metal waveguides (such as rectangular waveguides, circular waveguides, etc.), transmission lines (such as axial lines, parallel double lines, etc.), and surface wave waveguides. [0003] In recent years, with the development of a high-power microwave and millimeter wave electric vacuum device - the cyclotron traveling wave tube, it has been able to generate tens or even hundreds of kilowatts of high-power...

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Problems solved by technology

The methods and measures mentioned above are all proven feasible by engineering practice, but some structures are more complicated in actual operation, and some even need to spend a lot of money (such as using artificial diamond as the output window dielectric material, a piece of diameter is 50 mm The output window, whose value reaches hundreds of thousands of yuan) and the cost of polluting the environment (such as the inert sulfur hexafluoride gas filled in the waveguide system has a certain pollution to the environment)

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