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Apparatus for inhibiting multi-beam klystron higher harmonic mode oscillation and reducing sundry spectrum level

A technology of noise spectrum and level, which is applied in the field of devices for suppressing high-order mode oscillation of multi-beam klystrons and reducing noise level, can solve the problems of large volume, complicated processing and welding technology, etc. and the assembly process are simple, and the effect of suppressing high-order mode oscillations

Inactive Publication Date: 2008-10-08
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the external absorption cavity can only suppress the oscillation of a high-order mode, and the volume is large, and the processing and welding processes are more complicated.

Method used

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  • Apparatus for inhibiting multi-beam klystron higher harmonic mode oscillation and reducing sundry spectrum level
  • Apparatus for inhibiting multi-beam klystron higher harmonic mode oscillation and reducing sundry spectrum level
  • Apparatus for inhibiting multi-beam klystron higher harmonic mode oscillation and reducing sundry spectrum level

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Embodiment Construction

[0016] figure 1 It is a structural schematic diagram of the electroabsorption ceramic material 21 of the device for suppressing multi-beam klystron high-order mode oscillation and reducing the level of spurious spectrum in the present invention.

[0017] See FIG. 2 , in the figure, an electroabsorption ceramic material 21 and a metal plug 22 . The device 34 for suppressing the high-order mode oscillation of the multi-beam klystron and reducing the noise spectrum level of the present invention mainly includes two parts, the electroabsorption ceramic material 21 and the metal plug 22, and the electroabsorption ceramic material 21 is welded to the clip of the metal plug 22. on the slot. The device 34 is welded on the cavity wall of the multi-beam klystron double-gap output cavity by high-temperature metal brazing, and the electro-absorbing ceramic material 21 is deep into a part of the coupling slit at the center of the coupling slit, as shown in Fig. 3(a) and (b). In the figu...

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Abstract

The invention provides a device for inhibiting multiple injection speed regulating pipe higher-order mode oscillation and reducing impure spectrum level, which is composed of electric absorption material with set dielectric constant and dielectric loss. By selecting material parameter, shape and size of the device, placement position and connection method, the higher-order mode oscillation with phi mode field shape arrangement in multiple injection speed regulating pipe double-clearance coupling cavity output circuit is effectively inhibited and the impure spectrum level induced by the mode is reduced. The device of the present invention can inhibit higher-order mode type oscillation and reduce impure spectrum level for the multiple injection speed regulating pipe with double-clearance coupling cavity output circuit.

Description

technical field [0001] The invention relates to a special component of a microwave electric vacuum device, which is a device for suppressing high-order mode oscillation of a multi-beam klystron and reducing the level of miscellaneous spectra. Background technique [0002] In order to expand the bandwidth of multi-beam klystrons, double-gap coupled cavities are usually used as broadband output circuits. Due to the internal feedback between the two resonant cavities of the double-gap coupling cavity output circuit, under certain conditions, it will cause high-order mode oscillation, so that the multi-beam klystron cannot work normally. In addition, under high-frequency excitation, due to the change of electron beam velocity or the existence of a small amount of inverted electrons, high-order modes will be generated, forming a mixed spectrum, reducing the quality of the output spectrum, causing the output waveguide of the transmitter to spark and interfere with other microwave ...

Claims

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Application Information

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IPC IPC(8): H01J23/00H01J25/10
Inventor 丁耀根孙小欣张永清丁海兵沈斌
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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