Flap-topped sine waveguide slow wave structure

A technology of sine waveguide and slow wave structure, which is applied in the field of flat-top sine waveguide slow wave structure, millimeter wave, and terahertz band vacuum electronic devices, and can solve the problems of long saturation interaction length, low interaction efficiency, and weak electric field strength, etc. problem, to achieve the effect of increased interaction capability, increased output power, and high coupling impedance value
CN105869971AInactive Publication Date: 2016-08-17UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2016-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a flat-topped sine waveguide slow wave structure. The size b of a narrow side is compressed appropriately on the basis of a sine waveguide slow wave structure, and the compression size is equal to the height of periodical strip fluctuation cut-tops of upper and low sine lines, so that the size parameter meets the condition that b is smaller than the sum of hb and 2h, wherein hb is the height of a sheet electron beam channel and h is the height of periodical strip fluctuations of the sine lines. Tests show that the flat-topped sine waveguide slow wave structure has a higher coupling impedance value, the dispersion characteristic is improved, increase of traditional coupled impedance is prevented, the defect that the dispersion characteristic is reduced is overcome, the interactive capacity between electron beams and electromagnetic waves is improved, and the output power, the gain and the interaction efficiency of traveling-wave tubes are improved.
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Description

technical field

[0001] The invention belongs to the technical field of vacuum electronics, and more specifically relates to a flat-top sine waveguide slow-wave structure, which is suitable for vacuum electronic devices in the millimeter wave and terahertz bands. Background technique

[0002] Terahertz waves are electromagnetic waves with frequencies between microwave and infrared bands, which play an important role in high-speed space communication, ultra-high resolution weapon guidance, medical imaging, material terahertz spectral feature analysis, security inspection, material detection, etc. research value and broad application prospects. Vacuum electronic devices are a promising device that can realize high-power terahertz wave radiation sources. Traveling wave tube is a kind of millimeter wave and terahertz radiation source widely used in vacuum electronic devices. It has the characteristics of high power, high efficiency, high gain, wide frequency band and long life. ...

Claims

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