CN113300691A - Multi-harmonic synthesizer - Google Patents
Multi-harmonic synthesizer Download PDFInfo
- Publication number
- CN113300691A CN113300691A CN202110751876.XA CN202110751876A CN113300691A CN 113300691 A CN113300691 A CN 113300691A CN 202110751876 A CN202110751876 A CN 202110751876A CN 113300691 A CN113300691 A CN 113300691A
- Authority
- CN
- China
- Prior art keywords
- harmonic
- harmonic generator
- generator
- box body
- vacuum box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/543—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a vacuum tube
Landscapes
- Particle Accelerators (AREA)
Abstract
The invention relates to a multi-harmonic synthesis device, which comprises a vacuum box body, a first harmonic generator, a second harmonic generator, a third harmonic generator and a sampler, wherein the vacuum box body is provided with a vacuum cavity; the vacuum box body is internally provided with electrode plates, and the upper end and the lower end of the vacuum box body are respectively provided with through holes for passing electron beams; a first pipe body and a second pipe body are arranged on one side of the vacuum box body in parallel, and the first pipe body is positioned above the second pipe body; the second harmonic generator is arranged on the first pipe body; the second pipe body is provided with the first harmonic generator, the third harmonic generator and the sampler, the first harmonic generator is arranged at one end far away from the vacuum box body, the third harmonic generator is arranged at one end close to the vacuum box body, and the sampler is arranged between the first harmonic generator and the third harmonic generator. The invention can form any waveform with any frequency and voltage without being limited by frequency and voltage.
Description
Technical Field
The invention relates to the technical field of accelerator waveform generation, in particular to a multi-harmonic synthesis device.
Background
In the construction of accelerator equipment at home and abroad, due to the limitation of repetition frequency and voltage amplitude, the generation of some complex waveforms (such as sawtooth waves, square waves and the like) is very difficult to realize. The method is realized at a lower frequency or a lower amplitude, and there are some methods in electronics, such as a broadband amplifier method (small signal sawtooth wave is amplified without distortion and then matched with an electrode), a charge-discharge method (charging and discharging are carried out through a high-voltage vacuum tube, but different loops are realized), and the like. However, these methods are subject to severe frequency and amplitude constraints and have not been able to accommodate the high repetition frequency and high voltage characteristics of modern accelerators.
Taking sawtooth wave as an example, the prior art is characterized as follows:
(1) the charge-discharge method of the electric vacuum tube comprises the following steps: is mainly limited by the frequency of the electrovacuum tube and the tube consumption, and has a formula
From this, the corresponding waveform voltage Vp-pIs seriously suffered from pipe consumption PaAnd the frequency f, generally speaking, this is not possible with this approach when the frequency is above 50 MHz.
(2) Wide band amplifier method: the application of the method is strictly influenced by the performance of the broadband amplifier, and the higher the harmonic frequency is, the higher the voltage is, the broadband and the high gain are meant, and the performance requirement of the amplifier is higher. Obviously, the generation of a high-voltage, high-frequency special signal by means of an amplifier must have a bottleneck and cannot be increased all the time.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a multiple harmonic synthesizing apparatus capable of forming a synthesized waveform of an arbitrary frequency and voltage without being limited by the frequency and voltage.
In order to achieve the purpose, the invention adopts the following technical scheme: a multi-harmonic synthesizer comprises a vacuum box body, a first harmonic generator, a second harmonic generator, a third harmonic generator and a sampler; the vacuum box body is internally provided with electrode plates, and the upper end and the lower end of the vacuum box body are respectively provided with through holes for passing electron beams; a first pipe body and a second pipe body are arranged on one side of the vacuum box body in parallel, and the first pipe body is positioned above the second pipe body; the second harmonic generator is arranged on the first pipe body; the second pipe body is provided with the first harmonic generator, the third harmonic generator and the sampler, the first harmonic generator is arranged at one end far away from the vacuum box body, the third harmonic generator is arranged at one end close to the vacuum box body, and the sampler is arranged between the first harmonic generator and the third harmonic generator.
Further, the first harmonic generator, the second harmonic generator, and the third harmonic generator are each composed of a coupler and a tuner.
Further, the electrode plates in the vacuum box body are arranged in an X shape, and gaps for passing electron beams are formed among the electrode plates.
Further, the second harmonic generated by the second harmonic generator acts on the upper half part of the electrode plate, the first harmonic and the third harmonic generated by the first harmonic generator and the third harmonic generator act on the lower half part of the electrode plate, and the first harmonic, the second harmonic and the third harmonic are synthesized on the electrode plate.
Further, the synthesis method comprises the following steps: because the resonance structure with one short circuit end and one open circuit end is adopted, the electric field is concentrated at the open circuit end during resonance, all the third modes are generated on the electrode plate, namely, harmonic synthesis is formed on the electrode.
Further, the length of the first pipe body is smaller than that of the second pipe body.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the invention can basically get rid of the limitation of frequency and voltage by adopting a resonance mode, and synthesizes a plurality of harmonic waves by utilizing the advantages of the resonator so as to achieve the purpose of realizing high-voltage and high-frequency special periodic signals.
2. The invention is based on the brand-new generation principle of complex waveforms of the microwave resonator, and can synthesize any waveform by increasing the number of harmonic waves. Because of the particularity of the resonant structure, very high voltage and very high frequency can be generated by using very small power, so that the harmonic synthesis can be realized without the limitation of frequency and voltage by utilizing the characteristic, and any waveform (Fourier synthesizable) of any frequency and voltage can be formed.
Drawings
FIG. 1 is a schematic diagram of a three-harmonic synthesizer of the present invention for generating a sawtooth waveform;
FIG. 2 is a graph comparing the linearity of second to fifth harmonic synthesis according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the present invention provides a multiple harmonic synthesizer, which includes a vacuum box 1 (vacuumcommer), a first harmonic generator 2, a second harmonic generator 3, a third harmonic generator 4 and a sampler 5. An electrode plate 6 is arranged in the vacuum box body 1, and the upper end and the lower end of the vacuum box body 1 are respectively provided with a through hole 7 for passing an electron beam (beamaxis); one side of the vacuum box body 1 is provided with a first pipe body 8 and a second pipe body 9 in parallel, and the first pipe body 8 is positioned above the second pipe body 9. A second harmonic generator 3 is arranged on the first pipe body 8; the second pipe body 9 is provided with a first harmonic generator 2, a third harmonic generator 4 and a sampler 5, the first harmonic generator 2 is arranged on the second pipe body 9 far away from the vacuum box body 1, the third harmonic generator 4 is arranged on the second pipe body 9 close to the vacuum box body 1, and the sampler 5 is arranged on the second pipe body 9 between the first harmonic generator 2 and the third harmonic generator 4.
In a preferred embodiment, the first harmonic generator 2, the second harmonic generator 3 and the third harmonic generator 4 are each formed by a coupler 10 and a tuner 11 (tuner). Preferably, the first harmonic frequency generated by the first harmonic generator 2 is 40MHz, the second harmonic frequency generated by the second harmonic generator 3 is 80MHz, and the third harmonic frequency generated by the third harmonic generator 4 is 120 MHz.
In a preferred embodiment, the electrode plates 6 in the vacuum chamber 1 are arranged in an approximately X-shape, and a gap for passing the electron beam is provided between the electrode plates 6. The second harmonic generated by the second harmonic generator 3 acts on the upper half part of the electrode plate 6, the first harmonic and the third harmonic generated by the first harmonic generator 2 and the third harmonic generator 4 act on the lower half part of the electrode plate 6, and the first harmonic, the second harmonic and the third harmonic are synthesized on the electrode plate 6.
The synthesis method comprises the following steps: because the resonance structure with one short circuit end and one open circuit end is adopted, the electric field is concentrated at the open circuit end during resonance, all the third modes are generated on the electrode plate 6, namely, harmonic synthesis is formed on the electrode. When the device is used, the amplitude and the phase of the input voltage are adjusted according to the requirement, and the required synthesized waveform can be obtained.
In a preferred embodiment, the length of the first tube 8 is less than the length of the second tube 9. Wherein the lengths of the first body 8 and the second body 9 are determined by the frequency of the single-ended open-circuited, single-ended short-circuited coaxial resonant structure (solving the transcendental equation).
Example (b):
taking sawtooth waves as an example, the whole three-harmonic synthesis system is formed, three signals have independent tuning capacity of amplitude and phase, and the radio frequency system further comprises a directional coupler 10, a circulator, a temperature, power and other state monitoring and communication module. The device comprises a control unit, a water cooling system and a power transmission system.
The final third harmonic synthesized sawtooth wave pattern (other wave forms are generated by the same principle) is shown in fig. 2, the third harmonic synthesized sawtooth wave pattern has limit in linearity and efficiency due to the theoretical limit, and the harmonic times can be increased if the requirement of the device is not met, but it is noted that the two resonators cannot generate the fourth harmonic and the eighth harmonic.
In summary, the invention has considered the synthesis of up to ten harmonics, but the general engineering requirements can satisfy the preliminary requirements four times or less, so the schematic diagram of the three-harmonic synthesis is emphasized.
The above embodiments are only for illustrating the present invention, and the structure, size, arrangement position and shape of each component can be changed, and on the basis of the technical scheme of the present invention, the improvement and equivalent transformation of the individual components according to the principle of the present invention should not be excluded from the protection scope of the present invention.
Claims (6)
1. A multi-harmonic synthesizer is characterized by comprising a vacuum box body, a first harmonic generator, a second harmonic generator, a third harmonic generator and a sampler; the vacuum box body is internally provided with electrode plates, and the upper end and the lower end of the vacuum box body are respectively provided with through holes for passing electron beams; a first pipe body and a second pipe body are arranged on one side of the vacuum box body in parallel, and the first pipe body is positioned above the second pipe body; the second harmonic generator is arranged on the first pipe body; the second pipe body is provided with the first harmonic generator, the third harmonic generator and the sampler, the first harmonic generator is arranged at one end far away from the vacuum box body, the third harmonic generator is arranged at one end close to the vacuum box body, and the sampler is arranged between the first harmonic generator and the third harmonic generator.
2. The multiple harmonic synthesizing apparatus according to claim 1, wherein the first harmonic generator, the second harmonic generator and the third harmonic generator are each constituted by a coupler and a tuner.
3. The multiple harmonic synthesizing apparatus according to claim 1, wherein the electrode plates in the vacuum chamber are arranged in an X-shape, and a gap for passing an electron beam is provided between the electrode plates.
4. The multiple harmonic synthesizing apparatus according to claim 3, wherein the second harmonic generated by the second harmonic generator is applied to the upper half of the electrode plate, the first harmonic and the third harmonic generated by the first harmonic generator and the third harmonic generator are applied to the lower half of the electrode plate, and the first harmonic, the second harmonic and the third harmonic are synthesized on the electrode plate.
5. The multi-harmonic synthesis apparatus according to claim 4, wherein the synthesis method is: because the resonance structure with one short circuit end and one open circuit end is adopted, the electric field is concentrated at the open circuit end during resonance, all the third modes are generated on the electrode plate, namely, harmonic synthesis is formed on the electrode.
6. The multiple harmonic synthesis apparatus of claim 1 wherein the length of the first tube is less than the length of the second tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110751876.XA CN113300691B (en) | 2021-07-02 | 2021-07-02 | Multi-harmonic synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110751876.XA CN113300691B (en) | 2021-07-02 | 2021-07-02 | Multi-harmonic synthesizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113300691A true CN113300691A (en) | 2021-08-24 |
| CN113300691B CN113300691B (en) | 2022-09-06 |
Family
ID=77330359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110751876.XA Active CN113300691B (en) | 2021-07-02 | 2021-07-02 | Multi-harmonic synthesizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113300691B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB630005A (en) * | 1942-07-21 | 1949-10-04 | Sperry Gyroscope Co Inc | Improvements in or relating to high frequency electron discharge tube structures |
| JP2002305098A (en) * | 2001-04-04 | 2002-10-18 | Mitsubishi Electric Corp | Electron beam control device, electron beam generating device and electron beam controlling method |
| CN101064987A (en) * | 2003-02-12 | 2007-10-31 | 东京毅力科创株式会社 | Plasma processing apparatus and apparatus for supplying RF power |
| JP2009302958A (en) * | 2008-06-13 | 2009-12-24 | Epson Toyocom Corp | Harmonic frequency oscillator |
| CN103207405A (en) * | 2013-05-03 | 2013-07-17 | 中国科学院上海应用物理研究所 | Beam cluster parameter measuring system for low-energy heavy ions and frequency resonance energy selection energy measuring method |
| CN103311076A (en) * | 2013-05-08 | 2013-09-18 | 电子科技大学 | Traveling-wave regenerative-feedback oscillation system |
| CN104483863A (en) * | 2014-12-13 | 2015-04-01 | 中国科学院近代物理研究所 | Automatic frequency tuning control system |
-
2021
- 2021-07-02 CN CN202110751876.XA patent/CN113300691B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB630005A (en) * | 1942-07-21 | 1949-10-04 | Sperry Gyroscope Co Inc | Improvements in or relating to high frequency electron discharge tube structures |
| JP2002305098A (en) * | 2001-04-04 | 2002-10-18 | Mitsubishi Electric Corp | Electron beam control device, electron beam generating device and electron beam controlling method |
| CN101064987A (en) * | 2003-02-12 | 2007-10-31 | 东京毅力科创株式会社 | Plasma processing apparatus and apparatus for supplying RF power |
| JP2009302958A (en) * | 2008-06-13 | 2009-12-24 | Epson Toyocom Corp | Harmonic frequency oscillator |
| CN103207405A (en) * | 2013-05-03 | 2013-07-17 | 中国科学院上海应用物理研究所 | Beam cluster parameter measuring system for low-energy heavy ions and frequency resonance energy selection energy measuring method |
| CN103311076A (en) * | 2013-05-08 | 2013-09-18 | 电子科技大学 | Traveling-wave regenerative-feedback oscillation system |
| CN104483863A (en) * | 2014-12-13 | 2015-04-01 | 中国科学院近代物理研究所 | Automatic frequency tuning control system |
Non-Patent Citations (2)
| Title |
|---|
| J.M.BYRD等: ""Design of a higher harmonic RF system for the Advanced Light Source"", 《NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION A: ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT》 * |
| 强永龙: ""基于低噪声光电振荡器的三角波脉冲产生技术研究"", 《中国优秀博硕士学位论文全文数据库(硕士) 信息科技辑》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113300691B (en) | 2022-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2381320A (en) | Electromagnetic apparatus | |
| CN210015937U (en) | Filter, communication and radio frequency remote equipment, transceiver and tower top amplifier | |
| US9355808B2 (en) | Injection locked magnetron microwave generator with recycle of spurious energy | |
| Liu et al. | A TE 13 mode converter for high-order mode gyrotron-traveling-wave tubes | |
| CN110491752B (en) | Multi-electron-beam diffraction radiation oscillator | |
| CN113300691B (en) | Multi-harmonic synthesizer | |
| US10804863B2 (en) | System and method for amplifying and combining radiofrequency power | |
| CN211654764U (en) | High-power microwave generating device | |
| CN115378403A (en) | Arbitrary waveform synthesizer | |
| Wu et al. | Design and simulation of ultra-wideband combined antenna for high-power microwave | |
| CN107919518B (en) | Gao Zhongying wide range high-power microwave oscillator based on gyromagnet type strip transmission line | |
| CN206023744U (en) | X frequency range Low phase noise phase lock dielectric oscillators | |
| CN114464515B (en) | Frequency-locking phase-locking and allocating structure of different-cavity magnetron | |
| Papke et al. | HOM couplers for CERN SPL cavities | |
| Wang et al. | Improved bifrequency magnetically insulated transmission line oscillator | |
| Butler et al. | Twin traveling-wave tube amplifiers driven by a relativistic backward-wave oscillator | |
| KR102667166B1 (en) | in-situ tunable resonator with high quality factor | |
| Nalos | A hybrid type traveling-wave tube for high-power pulsed amplification | |
| Baikov et al. | Methods for optimizing the high efficient broadband klystrons | |
| US2564385A (en) | Electronic transmitting valve of great power for ultra short waves | |
| RU2379782C1 (en) | Device for generating electrical voltage pulses | |
| RU2486641C1 (en) | Method of generating subnanosecond microwave pulses and apparatus for realising said method | |
| Yang et al. | Investigation of G-band Extended Interaction Klystron Broadband Beam-wave Interaction | |
| Winslow | Phase velocity dispersion shaping as a design parameter in traveling wave tubes | |
| Tallerico | A 150-kw, 450-mhz gyrocon rf generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |