CN203466160U - Energy delivery window of UWB (Ultra Wide Band) MMW (Millimeter Waves) travelling wave tube - Google Patents
Energy delivery window of UWB (Ultra Wide Band) MMW (Millimeter Waves) travelling wave tube Download PDFInfo
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- CN203466160U CN203466160U CN201320494137.8U CN201320494137U CN203466160U CN 203466160 U CN203466160 U CN 203466160U CN 201320494137 U CN201320494137 U CN 201320494137U CN 203466160 U CN203466160 U CN 203466160U
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Abstract
The utility model discloses an energy delivery window of a UWB MMW travelling wave tube. The energy delivery window is formed by soldering an internal conductor, dielectric ceramics, an external conductor and an adapter flange, wherein the internal conductor of an elongated cylindrical acicular structure is distributed in steps, and the two steps at the tail end are connected via a gradual-change transition segment; and the dielectric ceramics are of a cylindrical structure. The energy delivery window can reach the voltage standing wave ratio less than 1.2 within the working frequency band range of 18-40GHz of the wide band travelling wave tube, the vacuum airtightness is excellent, and the energy delivery window can be applied to UWB spiral travelling wave tubes as well as travelling wave tubes of other frequency band ranges in the K or Ka wave band.
Description
Technical field
The utility model belongs to microwave electrovacuum field, relates in particular to a kind of ultra broadband millimeter wave traveling wave tube delivery of energy window.
Background technology
The development of modern military technology is maked rapid progress, and system electronic equipment has also proposed more and more higher requirement to broadband high-power ballistic device.Helix TWT is current unique microwave power device that can meet broadband ECM transmitter performance requirement, it has the features such as high-power, high efficiency, high-gain, broadband and long-life, be widely used among each national defence key project, be described as " heart " of equipment.Because China's element task is relatively backward, and the restriction of all current conditions factors, still there is a certain distance in China's level of production and advanced international standard.Therefore, development wide frequency band traveling wave tube is the advanced ECM transmitter key issue in the urgent need to address of development, is also improve electronics overall performance basic.Wide frequency band traveling wave tube working band mainly determines by slow wave system, but wide frequency band range determines by the transmission characteristic of delivery of energy window, the quality of delivery of energy window performance whether directly determine mutual effect energy that slow wave system produces output to outside pipe number.
Travelling wave tube delivery of energy window in electric property, make microwave signal as far as possible losslessly from managing transmission line be sent to slow wave line (or from slow wave line be sent to pipe transmission line).The delivery of energy window design of travelling wave tube well whether, working band and gain and the gain flatness of pipe will directly be had influence on, realize slow wave line and the matched well of managing outer transmission line in pipe, exactly the fast electromagnetic wave on the outer transmission line of pipe will be converted to completely to the slow electromagnetic wave on slow wave line in pipe.Along with the electromagnetic frequency band range of transmission increases, the physical dimension that various frequency bands are corresponding changes greatly, and the design of broadband delivery of energy window is more difficult, and physical dimension slightly deviation will cause the obvious reflection of signal.
Utility model content
Technical problem to be solved in the utility model is the ultra broadband millimeter wave traveling wave tube delivery of energy window that a kind of Frequency Response meets ultra broadband travelling wave tube bandwidth of operation (18-40GHz).
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of ultra broadband millimeter wave traveling wave tube delivery of energy window, comprise inner wire, media ceramic, outer conductor, shell and adapter flange,
Media ceramic is cylindrical structure, and top end face contacts with inner wire, and bottom end face and bottom periphery contact with outer conductor;
Inner wire is elongate cylinder acicular texture, from one end to other one end, be stepped profile, be divided into four sections, difference first step, second step, the 3rd step and the 4th step, between the 3rd step of afterbody and the 4th step, by gradual transition section, connect, at second step place, step end face and media ceramic end contact, the endoporus of the 3rd step periphery and media ceramic is suitable; Gradual transition section on inner wire is positioned at media ceramic endoporus;
Outer conductor comprises outer conductor seat and outer conductor ring, and outer conductor seat is circular, is provided with a step in endoporus, and step bottom end face and inner bore of step are adaptive with media ceramic bottom end face and periphery respectively; Outer conductor ring is cylindric, is provided with two steps, and is connected with transition in endoporus, and bottom stage endoporus and media ceramic are suitable, and outer conductor ring periphery and shell are suitable; Between outer conductor seat and outer conductor ring, by pad, be connected;
Shell is that interior periphery is equipped with the cylindrical of step, and the inner bore of step of shell and outer conductor periphery are suitable, and step end face and outer conductor seat end face are suitable;
Adapter flange is annular with the level, and inner bore of step and shell periphery are suitable.
Media ceramic is that dielectric constant is 8.9 95 alumina medium potteries.
The utility model has the advantage of, in ultra broadband travelling wave tube working band (18-40GHz) bandwidth, voltage standing wave ratio reaches below 1.2, may be used in ultra broadband helix TWT, also may be used in the travelling wave tube of other frequency band range in K, Ka wave band.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of ultra broadband millimeter wave traveling wave tube of the utility model delivery of energy window;
Fig. 2 is the test curve figure of voltage standing wave ratio and frequency;
Mark in above-mentioned figure is: 1, media ceramic, 2, inner wire, 21, first step, 22, second step, 23, the 3rd step, the 24, the 4th step, 3, outer conductor ring, 4, outer conductor seat, 5, pad, 6, shell, 7, adapter flange.
Embodiment
Fig. 1 is the structural representation of a kind of ultra broadband millimeter wave traveling wave tube of the utility model delivery of energy window; The technical solution of the utility model implementation step is as follows:
1. select ceramic material, according to properties of materials, determine the structure of media ceramic 1;
2. design the structure of inner wire 2;
3. according to the structure of the structural design outer conductor of inner wire 2 and media ceramic 1;
4. after inner wire 2, outer conductor and media ceramic 1 being made, be assembled together, form delivery of energy window assembly;
5. according to the structure of the structural design shell 6 of delivery of energy window assembly and adapter flange 7;
6. by after shell 6 and adapter flange 7 making, with delivery of energy window assembly, be assembled together, form delivery of energy window model;
7. by delivery of energy window model, one end connects slow wave structure, and one end connects coupling and measures transmission characteristic, and can inspection meet design requirement.
The 95 alumina mediums potteries that selection dielectric constant is 8.9, determine that its planform is cylinder, at top end face, contact with inner wire 2, at bottom end face and bottom peripheral direction, contact with outer conductor.
According to ceramic structure design inner wire 2 structures, inner wire 2 is elongate cylinder acicular texture, from one end to other one end, be stepped profile, be divided into four sections, between two steps of afterbody, in order to gradual transition section, connect, at its maximum step place, be second step 22 places, step end face and media ceramic 1 end contact, the step under maximum step i.e. the 3rd step 23 peripheries contacts with the endoporus of media ceramic 1; Gradual transition section on inner wire 2 pins is positioned at media ceramic 1 endoporus.
Design outer conductor structure, outer conductor is divided into outer conductor seat 4 and outer conductor ring 3, and outer conductor seat 4 is circular, has 1 step in endoporus direction, and step bottom end face contacts with periphery with media ceramic 1 bottom end face respectively with inner bore of step; Outer conductor ring 3 is cylindric, has two steps in endoporus direction, with transition, is connected, and bottom stage endoporus contacts with media ceramic 1, and outer conductor changes periphery and contacts with shell 6; Between outer conductor seat 4 and outer conductor ring 3, with a pad 5, be connected.
After inner wire 2, outer conductor and media ceramic 1 are made, at the place of being in contact with one another, by conducting resinl or metal solder, fix, form delivery of energy window assembly.
According to the structure of the structural design shell 6 of delivery of energy window assembly and adapter flange 7, shell 6 is that interior periphery is all with the level cylindric, and adapter flange 7 is circular.The inner bore of step of shell 6 contacts with outer conductor periphery, step end face and outer conductor end contact.Adapter flange 7 inner bore of step contact with shell 6 peripheries.
By after shell 6 and adapter flange 7 making, with delivery of energy window assembly, be assembled together, form delivery of energy window model.
The slow wave structure that delivery of energy window model one end is connected to travelling wave tube, one end connects coupling, measures transmission characteristic on network analyzer, carries out voltage standing wave ratio measurement, obtains curve as shown in Figure 2, can meet voltage standing wave ratio in working band lower than 2.5 requirement.
In ultra broadband travelling wave tube working band (18-40GHz) bandwidth, meet voltage standing wave(VSW) and reach below 1.2, vacuum-tightness is good, may be used in ultra broadband helix TWT, also may be used in the travelling wave tube of other frequency band range in K, Ka wave band.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection range of the present utility model.
Claims (2)
1. a ultra broadband millimeter wave traveling wave tube delivery of energy window, is characterized in that: comprise inner wire (2), media ceramic (1), outer conductor, shell (6) and adapter flange (7),
Media ceramic (1) is cylindrical structure, and top end face contacts with inner wire (2), and bottom end face and bottom periphery contact with outer conductor;
Inner wire (2) is elongate cylinder acicular texture, from one end to other one end, be stepped profile, be divided into four sections, difference first step (21), second step (22), the 3rd step (23) and the 4th step (24), between the 3rd step (23) of afterbody and the 4th step (24), by gradual transition section, connect, at second step (22), locate, step end face and media ceramic (1) end contact, the endoporus of the 3rd step (23) periphery and media ceramic (1) is suitable; Gradual transition section on inner wire (2) is positioned at media ceramic (1) endoporus;
Outer conductor comprises outer conductor seat (4) and outer conductor ring (3), and outer conductor seat (4) is circular, is provided with a step in endoporus, and step bottom end face and inner bore of step are adaptive with media ceramic (1) bottom end face and periphery respectively; Outer conductor ring (3) is cylindric, is provided with two steps, and is connected with transition in endoporus, and bottom stage endoporus and media ceramic (1) are suitable, and outer conductor ring (3) periphery and shell (6) are suitable; Between outer conductor seat (4) and outer conductor ring (3), by pad (5), be connected;
Shell (6) is that interior periphery is equipped with the cylindrical of step, and inner bore of step and the outer conductor periphery of shell (6) are suitable, and step end face and outer conductor seat (4) end face are suitable;
Adapter flange (7) is annular with the level, and inner bore of step and shell (6) periphery is suitable.
2. ultra broadband millimeter wave traveling wave tube delivery of energy window as claimed in claim 1, is characterized in that: media ceramic (1) for dielectric constant be 8.9 95 alumina mediums potteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320494137.8U CN203466160U (en) | 2013-08-13 | 2013-08-13 | Energy delivery window of UWB (Ultra Wide Band) MMW (Millimeter Waves) travelling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320494137.8U CN203466160U (en) | 2013-08-13 | 2013-08-13 | Energy delivery window of UWB (Ultra Wide Band) MMW (Millimeter Waves) travelling wave tube |
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| CN203466160U true CN203466160U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320494137.8U Expired - Fee Related CN203466160U (en) | 2013-08-13 | 2013-08-13 | Energy delivery window of UWB (Ultra Wide Band) MMW (Millimeter Waves) travelling wave tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156744A (en) * | 2018-01-18 | 2018-06-12 | 中国科学院近代物理研究所 | The power input coupler of double hot window types |
| CN109637918A (en) * | 2018-12-18 | 2019-04-16 | 中国电子科技集团公司第十二研究所 | A kind of delivery of energy window improving reliability |
| CN109830411A (en) * | 2019-01-31 | 2019-05-31 | 昆山国力大功率器件工业技术研究院有限公司 | Vacuum electrode |
| CN114147357A (en) * | 2021-12-20 | 2022-03-08 | 中国科学院空天信息创新研究院 | Output window for traveling wave tube and preparation method thereof |
-
2013
- 2013-08-13 CN CN201320494137.8U patent/CN203466160U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156744A (en) * | 2018-01-18 | 2018-06-12 | 中国科学院近代物理研究所 | The power input coupler of double hot window types |
| CN109637918A (en) * | 2018-12-18 | 2019-04-16 | 中国电子科技集团公司第十二研究所 | A kind of delivery of energy window improving reliability |
| CN109830411A (en) * | 2019-01-31 | 2019-05-31 | 昆山国力大功率器件工业技术研究院有限公司 | Vacuum electrode |
| CN114147357A (en) * | 2021-12-20 | 2022-03-08 | 中国科学院空天信息创新研究院 | Output window for traveling wave tube and preparation method thereof |
| CN114147357B (en) * | 2021-12-20 | 2023-12-01 | 中国科学院空天信息创新研究院 | Output window for traveling wave tube and preparation method thereof |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20210813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |