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Dual-electron-beam terahertz wave radiation source in overmode cascading high frequency structure

A technology of dual electron injection and injection of terahertz, which is applied to the cathode of the transit time type electron tube, the electron/ion gun of the transit time type electron tube, the traveling wave tube, etc., can solve the limitation of high-power folding waveguide traveling wave amplifier, The processing accuracy affects the working performance of the amplifier, and the coupling impedance of the folded waveguide structure is low, so as to achieve the effect of realizing high power output, reducing the requirements of the magnetic field, and shortening the saturation length.

Active Publication Date: 2016-02-24
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0007] (1) The coupling impedance of the folded waveguide structure itself is low, the interaction efficiency is not high, and the output power is small, which greatly limits its applications in ultra-wideband radar long-distance detection and high-resolution imaging radar.
[0008] (2) Due to the limitation of structural size, it is difficult to process in the terahertz frequency band, and the processing accuracy directly affects the working performance of the amplifier
Therefore, processing technology limits the realization of its high-power folded waveguide traveling wave amplifier

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Embodiment Construction

[0034] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that in the drawings or description of the specification, similar or identical parts use the same drawing numbers. The implementations not shown or described in the drawings are those known to those of ordinary skill in the art. In addition, although this article may provide an example of a parameter containing a specific value, it should be understood that the parameter does not need to be exactly equal to the corresponding value, but can be approximated to the corresponding value within acceptable error tolerances or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only directi...

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Abstract

The invention provides a dual-electron-beam terahertz wave radiation source. The terahertz wave radiation source adopts an overmode cascading folded waveguide traveling-wave amplified high frequency structure, so that the length of a single-section folded waveguide slow-wave structure can be dramatically shortened, and the demand on the magnetic field is reduced. The terahertz wave radiation source adopts the dual-electron beam excitation mode, so that the output power can be improved, and the demand on the negative electrode current emitting density is reduced as well; the input signal adopts a higher mode TE20 mode, so that the dimension of the slow-wave structure can be enlarged, and the processing of the slow-wave structure can be performed conveniently; within the same terahertz wave radiation source, the high power terahertz wave output is realized, and the design and the processing of the terahertz wave radiation source are facilitated; and therefore, the applications of the terahertz wave radiation source in the anti-interference, harmful substance detection, ultra wide band radar long-distance detection and high-resolution imaging radar and the like are promoted.

Description

Technical field [0001] The invention relates to the technical field of vacuum electronic devices, in particular to a dual electron injection terahertz wave radiation source with an over-mode cascade high-frequency structure. Background technique [0002] Terahertz (Terahertz) wave is the frequency of 0.1THz-10THz (1THz=10 12 The electromagnetic wave between Hz) is located between the relatively mature microwave millimeter wave and far-infrared light wave. Its unique wavelength characteristics make this band suitable for measuring the optical properties of materials, biomedical imaging, surface chemistry and strong field condensed matter. Research and other fields have a wide range of application value, and there are also important application prospects in radar detection and confidential communication in the military field. The important application value of terahertz waves in the military and civilian fields has attracted great attention from governments, especially the military...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J25/44H01J23/04H01J23/06
CPCH01J23/04H01J23/06H01J25/44
Inventor 刘文鑫张兆传李科赵超郭鑫
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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