CN201859828U - High-order rectangular resonant cavity structure of multi-beam klystron - Google Patents
High-order rectangular resonant cavity structure of multi-beam klystron Download PDFInfo
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- CN201859828U CN201859828U CN2010206018059U CN201020601805U CN201859828U CN 201859828 U CN201859828 U CN 201859828U CN 2010206018059 U CN2010206018059 U CN 2010206018059U CN 201020601805 U CN201020601805 U CN 201020601805U CN 201859828 U CN201859828 U CN 201859828U
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- resonant cavity
- drift tube
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- beam klystron
- klystron
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Abstract
A high-order rectangular resonant cavity structure of a multi-beam klystron belongs to the field of microwave vacuum electronic devices. Four pairs of drift tube heads, which are opposite pairwise from top to bottom, are arranged on upper and lower walls of the rectangular resonant cavity and correspond to four electric field peak concentration areas of the TM220 mode electric field, interaction clearances are formed among the four drift tube heads, and a plurality of through holes used as electronic injection holes are arranged on the draft tube heads which are surrounded by cooling passages. The four pairs of drift tube heads arranged on the TM220-mode rectangular resonant cavity are equal to four fundamental-mode cavities connected in parallel, and accordingly output power can be four times of that of a rectangular fundamental-mode cavity and output power capacity is increased greatly. Furthermore, the high-order rectangular resonant cavity structure is convenient in dynamic tuning and fine in frequency stability.
Description
Technical field
The utility model belongs to the microwave vacuum field of electronic devices, particularly a kind of higher modes rectangular cavity structure of multiple-beam klystron.
Technical background
Multiple-beam klystron has that operating voltage is low, bandwidth, gain height, characteristics that efficient is high.Its bandwidth can be comparable with high-power coupled-cavity TWT, but power, efficient is all than coupled-cavity TWT height, and its gain is much higher than FWA, and its efficient is far above solid state device, so it is the most competitive device of modern radar transmitter.Because high-power, broadband is the modern radar growth requirement just.
The amplification mechanism of multiple-beam klystron is that multibeam electron is annotated with the interaction of resonant cavity medium-high frequency electric field, makes radio-frequency field obtain amplifying.Electronics is annotated, these two factors of high-frequency electric field play a decisive role to amplification.Electric field in the resonant cavity depends on the characteristic of resonant cavity, so the characteristic of resonant cavity is most important to the performance of klystron.
In known technology, be operated in the multiple-beam klystron of rectangle or cylindrical cavity basic mode, when more high power levels develops, be restricted.Its reason is, electronics is annotated and will be interacted with high-frequency electric field, and the position of notes, size are subjected to the relative restriction of concentrating place's size with electric field of Electric Field Distribution in the resonant cavity, also promptly will be subjected to the restriction of drift tube size.The position that electronics is annotated is corresponding with the position of negative electrode, and therefore, the position of negative electrode, size, area also are subjected to the restriction of resonant cavity, and this has just limited the emission current and the klystron power output of negative electrode.Can improve power output though improve the klystron operating voltage yet, can lose its bandwidth, this does not wish to occur.
Be to break through the restriction of basic mode resonant cavity to the multiple-beam klystron power level, we have developed and have been operated in TM
220The multiple-beam klystron of higher modes rectangular cavity.It is different from the basic mode resonant cavity, and the higher modes resonant cavity size is big, has a plurality of peak electric field zone in the resonant cavity, can effectively increase the area of drift tube head, thereby increases cathode area and cathode current, finally improves power level.
Summary of the invention
The utility model technical issues that need to address are, are restricted to the high power development at the power level of basic mode resonant cavity multiple-beam klystron in the known technology, in order to overcome this restriction, have designed a kind of rectangular cavity of higher modes.Satisfying under the klystron operating voltage situation, it is long-pending to improve the klystron power output capacity to increase the drift tube women's head-ornaments, also satisfies heat radiation requirement under the high power work simultaneously.The purpose of this utility model provides a kind of rectangular cavity structure of multi-beam klystron higher harmonic mode formula.Higher modes rectangular cavity drift tube head heat exchange area increases, and is convenient to realize better cooling on the structure, more helps heat radiation, can bear bigger average power.
The technical solution of the utility model is as follows, a kind of rectangular cavity structure of multi-beam klystron higher harmonic mode formula, corresponding TM in rectangular cavity upper and lower cavity wall
2204 peak electric field concentrated areas of pattern is characterized in that, 4 pairs of drift tube heads are set, and 4 pairs of drift tube heads are relative in twos up and down, middle formation interaction gap; Have a plurality of on the circumjacent drift tube head of the passage that is cooled as the logical through hole of electronics beam.The corresponding negative electrode of the position of described each through hole and electron gun position is consistent, with the electronics percent of pass that obtains.Weld flexible membrane and the tuning screw of using respectively in described resonant cavity two side.These screws are to be used for realizing that the cavity dynamic frequency is tuning.Be provided with the cooling duct between the upper and lower cavity wall of resonant cavity, described cooling duct is near the drift tube head, and swiftly flowing cooling fluid is full of passage, and the heat energy of drift tube head is led away fast, improves the power capacity of klystron., be used for cooling duct with all resonant cavitys and be connected together and be connected perpendicular to the sidewall of flexible membrane processing cooling public passage at cavity with outer water channel.
The beneficial effects of the utility model are, because TM
220The pattern rectangular cavity is provided with 4 pairs of drift tube heads, is equivalent to the parallel connection in 4 basic mode chambeies, and power output can reach 4 times of rectangle basic mode chamber, has significantly improved the power output capacity.And dynamic tuning is convenient, and frequency stability is good.
Description of drawings
Fig. 1 is the front view of the utility model resonant cavity.
Fig. 2 is the vertical view of above-mentioned resonant cavity.
Fig. 3 is the AA complete section face view of above-mentioned resonant cavity.
Fig. 4 is the BB complete section face view of above-mentioned resonant cavity.
Embodiment
Referring to figs. 1 through Fig. 3, represent that the master of resonant cavity described in the utility model looks, overlook and cross section view, the inner chamber of resonant cavity is 1 among the figure, this inner chamber has the upper and lower cavity wall, corresponding higher modes electromagnetic field TM in the upper and lower cavity wall
220, it is relative in twos up and down to be provided with 2,4 pairs of drifts of 4 pairs of drift tube heads tube head in its 4 peak electric field concentrated areas; Each surrounds a plurality of electronics to the drift tube head and annotates passage 3, in this example, each surrounds 7 electronics to the drift tube head and annotates passage, be welded with 3 tuning screws of connection on the resonant cavity two side respectively around property diaphragm 4, the cooling duct is 5 between the upper and lower cavity wall, be full of swiftly flowing cooling fluid 6 in the passage, the outer part of cavity is public cooling duct 7, and the outside of public passage is a water route interface 8.With reference to Fig. 4, represent the BB complete section face view of above-mentioned resonant cavity.9 expression interaction gaps among the figure, i.e. resonant cavity medium-high frequency field and the places of annotating beam coupling more, energy is here amplified.A plurality of resonant cavitys (the chamber number is decided on the klystron parameter) are superimposed and constitute the high frequency resonate cavity parts of klystron.
Claims (4)
1. the rectangular cavity structure of a multi-beam klystron higher harmonic mode formula, corresponding TM in rectangular cavity upper and lower cavity wall
2204 peak electric field concentrated areas of pattern is characterized in that, 4 pairs of drift tube heads are set, and 4 pairs of drift tube heads are relative in twos up and down, middle formation interaction gap; Have a plurality of on the circumjacent drift tube head of the passage that is cooled as the logical through hole of electronics beam.
2. according to the described multi-beam klystron higher harmonic mode formula of claim 1 rectangular cavity structure, it is characterized in that the corresponding negative electrode of the position of described each through hole and electron gun position is consistent, with the electronics percent of pass that obtains.
3. according to the described multi-beam klystron higher harmonic mode formula of claim 1 rectangular cavity structure, it is characterized in that, weld flexible membrane and the tuning screw of using in described resonant cavity two side respectively.
4. according to the described multi-beam klystron higher harmonic mode formula of claim 1 rectangular cavity structure, it is characterized in that described cooling duct is near the drift tube head, swiftly flowing cooling fluid is full of passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206018059U CN201859828U (en) | 2010-11-11 | 2010-11-11 | High-order rectangular resonant cavity structure of multi-beam klystron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206018059U CN201859828U (en) | 2010-11-11 | 2010-11-11 | High-order rectangular resonant cavity structure of multi-beam klystron |
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| CN201859828U true CN201859828U (en) | 2011-06-08 |
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| CN2010206018059U Expired - Fee Related CN201859828U (en) | 2010-11-11 | 2010-11-11 | High-order rectangular resonant cavity structure of multi-beam klystron |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018578A (en) * | 2012-11-30 | 2013-04-03 | 安徽华东光电技术研究所 | Testing tool and testing method for loss button for coupling cavity traveling wave tube |
| CN104703380A (en) * | 2015-02-11 | 2015-06-10 | 中国科学院近代物理研究所 | Single-cavity multi-beam drift tube ion acceleration device |
| CN105428188A (en) * | 2015-12-18 | 2016-03-23 | 中国科学院电子学研究所 | Multi-link planar tuning component, and assembly clamp and assembly method therefor |
| CN109545638A (en) * | 2018-11-20 | 2019-03-29 | 西北核技术研究所 | A kind of resonant cavity and the Terahertz of intersection construction extend interaction oscillator |
| CN112290185A (en) * | 2020-10-21 | 2021-01-29 | 中国科学院空天信息创新研究院 | Loading structure and loading method of integrated rectangular resonant cavity |
-
2010
- 2010-11-11 CN CN2010206018059U patent/CN201859828U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018578A (en) * | 2012-11-30 | 2013-04-03 | 安徽华东光电技术研究所 | Testing tool and testing method for loss button for coupling cavity traveling wave tube |
| CN103018578B (en) * | 2012-11-30 | 2016-04-27 | 安徽华东光电技术研究所 | Testing tool and testing method for loss button for coupling cavity traveling wave tube |
| CN104703380A (en) * | 2015-02-11 | 2015-06-10 | 中国科学院近代物理研究所 | Single-cavity multi-beam drift tube ion acceleration device |
| CN104703380B (en) * | 2015-02-11 | 2017-12-19 | 中国科学院近代物理研究所 | The more beamforming drift tube ion accelerators of single-chamber |
| CN105428188A (en) * | 2015-12-18 | 2016-03-23 | 中国科学院电子学研究所 | Multi-link planar tuning component, and assembly clamp and assembly method therefor |
| CN109545638A (en) * | 2018-11-20 | 2019-03-29 | 西北核技术研究所 | A kind of resonant cavity and the Terahertz of intersection construction extend interaction oscillator |
| CN109545638B (en) * | 2018-11-20 | 2021-01-05 | 西北核技术研究所 | Terahertz extension interaction oscillator with resonant cavity and cross structure |
| CN112290185A (en) * | 2020-10-21 | 2021-01-29 | 中国科学院空天信息创新研究院 | Loading structure and loading method of integrated rectangular resonant cavity |
| CN112290185B (en) * | 2020-10-21 | 2021-06-08 | 中国科学院空天信息创新研究院 | Loading structure and loading method of integrated rectangular resonant cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20181111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |