Novel ultra wide band box type output window

Abstract

The invention provides a novel ultra wide band box type output window which is used for solving the problem that the existing box type output window is narrow in relative working band width. The ultra wide band box type output window comprises a rectangular waveguide, a round waveguide and a round medium window piece welded in the middle of the round waveguide in a sealing mode. Two ends of the round waveguide are connected the rectangular waveguide, and the rectangular waveguide is connected right in the middle of the section of the round waveguide. The novel ultra wide band box type output window is characterized in that the round waveguide is a similar O-shaped waveguide, the length is 0.25*sigma, and sigma is TE11 waveguide wavelength. The novel ultra wide band box type output window adopts the mixed mode transmission of TE11 and TM11, the working bandwidth is effectively expanded to 45%, and drifting of a center frequency point is effectively avoided. The similar O-shaped round waveguide effectively improves the transmission mode purity and further optimizes the transmission characteristic parameters of the box type output window. The box type output window is compact in structure and good in air tightness, has high power capacity, still has good transmission performance under certain machining errors and reduces machining difficulty.

Description

technical field [0001] The invention belongs to the field of microwave electric vacuum devices, and relates to an output device for microwave vacuum tubes, in particular to a novel ultra-wideband box-type output window. Background technique [0002] Microwave electric vacuum device is a device that converts the energy carried by moving electrons in vacuum into microwave energy. The electron gun produces an electron beam, which interacts with a high-frequency field in a vacuum environment, converting electron kinetic energy into high-frequency energy. In order to ensure the vacuum environment of the device, windows must be used to achieve isolation between the external atmospheric environment and the high vacuum state inside the microwave tube. [0003] The high-power output window is a key component of high-power microwave electric vacuum devices, accelerators and other high-power microwave electronic systems, and its quality often determines the success or failure of micro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a novel ultra-wideband box-type output window, which is used to overcome the problem that the existing box-type output window is relatively narrow in operating bandwidth

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