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A double-electron-beam terahertz wave radiation source with an over-mode cascaded high-frequency structure

A high-frequency structure and dual electron injection technology, which is applied to the cathode of the time-of-flight electron tube, the electron/ion gun of the time-of-flight electron tube, the traveling wave tube, etc., can solve the limitation of high-power folded waveguide traveling wave amplifier Machining accuracy affects the performance of the amplifier, low coupling impedance of the folded waveguide structure, etc., to achieve high power output, reduce the requirements of the magnetic field, and shorten the saturation length

Active Publication Date: 2018-01-26
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

Method used

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  • A double-electron-beam terahertz wave radiation source with an over-mode cascaded high-frequency structure
  • A double-electron-beam terahertz wave radiation source with an over-mode cascaded high-frequency structure
  • A double-electron-beam terahertz wave radiation source with an over-mode cascaded high-frequency structure

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values ​​may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values ​​within acceptable error margins or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only re...

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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 cascaded high-frequency structure. Background technique [0002] Terahertz (Terahertz) wave is at the frequency of 0.1THz-10THz (1THz=10 12 Hz) between the relatively mature microwave and millimeter waves and far-infrared light waves. Its unique wavelength characteristics make this wave band ideal for measuring optical properties of materials, biomedical imaging, surface chemistry, and strong-field condensed matter. Research and other fields have extensive application value, and at the same time, there are important application prospects in radar detection and secure communication in the military field. The important application value of terahertz waves in the military and civilian fields has attracted the attention of governments, especially the military, and invested a lot of resource...

Claims

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Application Information

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Patent Type & Authority Patents(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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