CN107993911B - A kind of Terahertz Zigzag type octamonic amplifier - Google Patents
A kind of Terahertz Zigzag type octamonic amplifier Download PDFInfo
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- CN107993911B CN107993911B CN201711189662.8A CN201711189662A CN107993911B CN 107993911 B CN107993911 B CN 107993911B CN 201711189662 A CN201711189662 A CN 201711189662A CN 107993911 B CN107993911 B CN 107993911B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/24—Slow-wave structures, e.g. delay systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
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Abstract
The present invention discloses a kind of Terahertz Zigzag type octamonic amplifier, is applied to vacuum electronics technology field, and for the difficult processing that current Terahertz vacuum device is faced, power is small, and interaction length is short, has the problems such as high-frequency Terahertz input source of certain power lacks；Amplifier of the invention uses two-part circuit, and traveling wave interaction amplification in first segment slow-wave structure, as far as possible excitation second harmonic are quickly amplified as backward wave input source, backward wave energy along electronics note reverse feedback, finally generates the frequency multiplication high-frequency current of effective clustering；The frequency multiplication high-frequency current of clustering in second segment slow-wave structure motivates amplification again, floods fundamental signal, improves frequency-doubled signal output power.
Description
Technical field
The invention belongs to vacuum electronics technology field, in particular to a kind of frequency multiplier technology.
Background technique
The electromagnetic wave in 0.1-10THz is broadly defined as THz wave, belongs to electronics and optical transition frequency range,
Has the characteristics that high-frequency, penetrability, low energy, THz wave is in the crossover location of electromagnetic spectrum and its unique property
Pushed Terahertz frequency spectrum safety inspection, Measurement for Biotechnique, material science and in terms of application, however it is big
The shortage of power, low cost and portable THz source is still limitation Terahertz in high-resolution Terahertz radar system, super
The main reason for military fields application such as high-rate ultra-wideband communication system.
Based on the THz source of vacuum electronic since it is with solid-state devices and the light such as wide, output power, stability is good
Sub- device can not advantage shoulder to shoulder, obtain the attention and research extensively of domestic and international experts and scholars.Terahertz based on vacuum electronic
Its core work mechanism of source is the interaction of electronics note and electromagnetic wave, when being expanded to Terahertz frequency range, microwave vacuum device
Also it faces frequency and structure size, the principle of output power restricts, according to effect is crossed altogether, frequency increases, and structure size is sharply
It reduces.Therefore arrive Terahertz frequency range, traditional microwave vacuum device is because of its complicated fine structure, it is difficult to realize high-precision processing and
Assembly, while size reduction, also bring the reduction of electron channel, to greatly contain passing through for electric current.Even if limited
Improve current density in ground, it is also difficult to effectively change the situation of power decline.Due to the diminution of channel size, it is desirable that electronics is infused more
It is very thin, also cause the pack of magnetic system more difficult, note wave interaction is difficult to maintain over long distances.
All the time, frequency multiplication amplification is one of the major way that semiconductor solid-state device generates THz source, in recent years,
Vacuum electronic field has scholar to propose the modulation using harmonic signal present in travelling-wave tubes, by electromagnetic wave to electronics note modulation
Realize the cascade frequency multiplication amplification of multistage slow-wave structure, but this method equally faces slow-wave structure that undersized bring crosses effect altogether
It answers, while cascade mode equally faces the too long problem of note wave interaction circuit.It can be seen that current Terahertz vacuum device
The difficulties such as the difficult processing faced, power is small, and interaction length is short, and the high-frequency Terahertz input source with certain power lacks
Point is the principal element for restricting the development of electrovacuum Terahertz power device, it is therefore desirable to constantly explore, seek new working machine
Reason.
Summary of the invention
In order to solve the above technical problems, the present invention proposes a kind of Terahertz Zigzag type octamonic amplifier, using retrofit
More notes integrate interdigitated electrode structure slow-wave structure, by inhibit frequency multiplication backward wave excitation become accelerate backward wave amplification.
A kind of the technical solution adopted by the present invention are as follows: Terahertz Zigzag type octamonic amplifier, comprising: cascade first segment is slow
Wave structure and second segment slow-wave structure, the first segment slow-wave structure and second segment slow-wave structure share an electronics and infuse；
Electromagnetic wave and electronics infuse interaction in first segment slow-wave structure, and electromagnetic wave is infused positive amplification along electronics, put
The frequency point f signal of fundamental wave after big and the frequency point 2f signal of frequency multiplication backward wave, the phase velocity of fundamental wave traveling wave are consistent with frequency-doubled signal phase velocity；
The energy of the frequency point 2f signal of frequency multiplication backward wave infuses reversed amplification along electronics, obtains the frequency multiplication current signal of clustering；
In second segment slow-wave structure, the electronics for being multiplexed the frequency multiplication high-frequency current of clustering is infused and reversed electromagnetic wave interaction,
Export frequency multiplication backward wave energy.
Further, the working frequency points of the second segment slow-wave structure are synchronous with electronics note.
Beneficial effects of the present invention: a kind of Terahertz Zigzag type octamonic amplifier of the invention, using two-part circuit,
Traveling wave interaction is amplified in one section of slow-wave structure, and for excitation 2f as far as possible as backward wave input source, backward wave energy is reversed along electronics note
Feedback quickly amplification, finally generates the frequency multiplication high-frequency current of effective clustering；The frequency multiplication high-frequency electrical of clustering in second segment slow-wave structure
Stream excitation amplification again, floods fundamental signal, improves frequency-doubled signal output power；The invention has the following advantages that
1, it is put forward for the first time the thinking of electronics note multiplexing, is infused in two sections of slow-wave structures using the same electronics, reaches amplification
Electronic efficiency is improved while harmonic wave；
2, it has been put forward for the first time and has utilized the backward wave oscillation frequency (2f) in travelling-wave tubes；
3, frequency-doubled signal (2f) is motivated using traveling wave (forward-wave), frequency-doubled signal (2f) energy is turned by note wave interaction
It moves on on electronics note, electronics note is made to continue to be applied to the oscillation increase that second segment circuit realizes frequency-doubled signal.
Detailed description of the invention
Fig. 1 is Terahertz Zigzag type octamonic amplifier schematic illustration；
Fig. 2 is two sections of circuit dispersion relations of Terahertz Zigzag type octamonic amplifier；
Fig. 3 is traveling wave, backward wave enlarged diagram in Terahertz Zigzag type octamonic amplifier.
Specific embodiment
For convenient for those skilled in the art understand that technology contents of the invention, with reference to the accompanying drawing to the content of present invention into one
Step is illustrated.
It is as shown in Figure 1 Terahertz Zigzag type octamonic amplifier schematic illustration；The technical solution of the present invention is as follows: one kind is too
Hertz Zigzag type octamonic amplifier, comprising: cascade first segment slow-wave structure and second segment slow-wave structure, first segment slow-wave structure
An electronics is shared with second segment slow-wave structure to infuse；The interaction of fundamental wave traveling wave is amplified in first segment slow-wave structure, is motivated secondary
For harmonic wave as backward wave input source, backward wave infuses reversed amplification along electronics in first segment slow-wave structure, generates the frequency multiplication high frequency of clustering
Electric current；In second segment slow-wave structure, the frequency multiplication high-frequency current of clustering amplifies again.
First segment slow-wave structure and second segment slow-wave structure of the invention shares an electronics note and carries out note wave interaction；The
One section of slow-wave structure takes structure of turning back, as shown in Fig. 2, dispersion requires the phase velocity of fundamental wave traveling wave (f) and the phase velocity of backward wave (2f)
Unanimously, the traveling wave schematic diagram of amplification is as shown in Figure 3；It, can be anti-as backward wave to the second harmonic (2f) of traveling wave amplification excitation
To the input source of transmission, the backward wave schematic diagram of amplification amplifies as shown in figure 3, realizing that second harmonic, that is, frequency multiplication backward wave is synchronous, from
And it realizes frequency multiplication and amplifies.
Second segment slow-wave structure uses double frequency power raddiating circuit, as shown in Fig. 2, dispersion requires electronics note and frequency multiplication backward wave
Signal frequency point (2f) is synchronous, so that realizing Cascaded amplification backward wave electromagnetic wave while fundamental signal inhibits, being illustrated in figure 3 is too
The backward wave tube that traveling wave, backward wave enlarged diagram in hertz Zigzag type octamonic amplifier, as a working frequency are 2f.
The dispersion that electromagnetic simulation software calculates the fundamental wave and harmonic wave of the first, second slow-wave structure can be used in practical applications
Curve designs two kinds of slow-wave structures of satisfaction by changing structure size；Two sections of slow-wave structures of the embodiment of the present invention can adopt
Infuse integrated interdigitated electrode structure slow-wave structure with, it is logical which is made of a natural electronics note the metal column of periodic arrangement more
Road, the slow-wave structure are all-metal structure, and heat dissipation ability is strong, and power capacity is big；Good integrity simultaneously, machining accuracy is high, at
This is low.
Terahertz Zigzag type octamonic amplifier of the invention is become amplifying frequency multiplication backward wave from inhibition frequency multiplication backward wave, is being not required to
When the backward wave input signal of external 2f is provided, realize that output frequency is the terahertz signal of 2f, the method amplified by frequency multiplication
Greatly alleviate requirement of the current vacuum electron device to THz source frequency；Infuse integrated interdigitated electrode structure slow-wave structure tool using more
There is natural electron beam channel, structure integration is by force to reduce difficulty of processing；Mode using frequency multiplication of turning back shortens slow wave
Also the length of Electronic beam focusing is shortened while structure length.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.For ability
For the technical staff in domain, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should be included within scope of the presently claimed invention.
Claims (1)
1. a kind of Terahertz Zigzag type octamonic amplifier characterized by comprising cascade first segment slow-wave structure and second segment
Slow-wave structure, the first segment slow-wave structure and second segment slow-wave structure share an electronics and infuse；
Electromagnetic wave and electronics infuse interaction in first segment slow-wave structure, and electromagnetic wave infuses positive amplification along electronics, after obtaining amplification
Fundamental wave frequency point f signal and frequency multiplication backward wave frequency point 2f signal, the phase velocity of fundamental wave traveling wave is consistent with frequency-doubled signal phase velocity；Frequency multiplication
The energy of the frequency point 2f signal of backward wave infuses reversed amplification along electronics, obtains the frequency multiplication current signal of clustering；
In second segment slow-wave structure, the electronics for being multiplexed the frequency multiplication high-frequency current of clustering is infused and reversed electromagnetic wave interaction, output
Frequency multiplication backward wave energy；
The working frequency points of the second segment slow-wave structure are synchronous with electronics note；
Two sections of slow-wave structures infuse integrated interdigitated electrode structure slow-wave structure using more, which constitutes one by the metal column of periodic arrangement
A natural electron beam channel, the slow-wave structure are all-metal structure.
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| CN201711189662.8A CN107993911B (en) | 2017-11-24 | 2017-11-24 | A kind of Terahertz Zigzag type octamonic amplifier |
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| CN201711189662.8A CN107993911B (en) | 2017-11-24 | 2017-11-24 | A kind of Terahertz Zigzag type octamonic amplifier |
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| CN107993911B true CN107993911B (en) | 2019-05-24 |
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| CN113889390A (en) * | 2020-07-02 | 2022-01-04 | 中国科学院空天信息创新研究院 | Double-injection plane terahertz gyrotron |
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| US8884516B2 (en) * | 2010-01-08 | 2014-11-11 | University Of Utah Research Foundation | Traveling wave electron device with membrane-supported slow wave circuit |
| CN102655068A (en) * | 2011-03-02 | 2012-09-05 | 中国科学院电子学研究所 | Manufacturing method of double-row rectangular comb-like slow wave structure |
| CN103346056B (en) * | 2013-06-24 | 2015-11-04 | 合肥工业大学 | The Terahertz slow wave structure of two-stage series connection |
| CN104064422B (en) * | 2014-06-21 | 2016-08-17 | 电子科技大学 | A kind of small-sized all-metal slow-wave device |
| CN104538271B (en) * | 2014-12-29 | 2017-02-22 | 中国电子科技集团公司第十二研究所 | Comb line slow wave structure working on high-order pass band |
| CN105742141A (en) * | 2016-03-09 | 2016-07-06 | 中国科学技术大学 | Terahertz magnetic radiation source |
| CN206639773U (en) * | 2017-04-25 | 2017-11-14 | 中国电子科技集团公司第十二研究所 | A kind of helix TWT based on segmentation tandem slow wave system |
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