CN203553090U - High-performance standing wave debugging apparatus for space travelling wave tube - Google Patents
High-performance standing wave debugging apparatus for space travelling wave tube Download PDFInfo
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- CN203553090U CN203553090U CN201320587144.2U CN201320587144U CN203553090U CN 203553090 U CN203553090 U CN 203553090U CN 201320587144 U CN201320587144 U CN 201320587144U CN 203553090 U CN203553090 U CN 203553090U
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- debugging apparatus
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Abstract
The utility model discloses a high-performance standing wave debugging apparatus for a space travelling wave tube. The standing wave debugging apparatus comprises an outer conductor (1), a matching cylinder (3) which is disposed at a tail end of an input spiral wire (2), a transmission wire starting end (4) disposed near the tail end of the input spiral wire (2), an impedance gradual change wire (5) which is connected with the transmission wire starting end (4), a transmission wire finishing end (6) which is connected with the impedance gradual change wire (5), and a polytetrafluoroethylene shielding layer (7) which wraps the transmission wire finishing end (6). The standing wave debugging apparatus is reasonable in structural design, adopts the structurally optimized matching cylinder, and through local reduction of the inner diameter of a shielding cylinder, realizes good matching between the spiral wire and the transmission wire with the standing-wave ratio dropping to 1.2 to 1.3, and thus meets the low-voltage standing-wave ratio requirement of the space travelling wave tube.
Description
Technical field
The utility model relates to a kind of debugging apparatus of travelling wave tube, is specifically related to a kind of standing wave debugging apparatus of hiperspace travelling wave tube.
Background technology
In travelling wave tube, high-frequency signal transmits along slow wave line, outside pipe, generally adopts the transmission line power such as coaxial line or waveguide.In order to make the lossless ground of high frequency power or to be transferred to slow wave line or transmission line from slow wave line is transferred to as far as possible little loss from outer transmission line, must guarantee slow wave line and the low-voltage standing wave requirement of managing outer transmission line, realize the good coupling between slow wave line and the outer transmission line of pipe.
For general external coaxial line, 50 ohm of its characteristic impedances and not with frequency change, and the characteristic impedance of helix is 100 ohm-200 ohm, and low frequency end impedance is large, and front end impedance is little.In order to realize impedance matching, traditional method is the method that adopts impedance tapered line, in two transmission line junctions, makes impedance form continuous level and smooth transition., geometry forms the progressively transition of smooth change.But this kind of structure standing wave when S-band space travelling wave tube is used reaches 2, the low standing wave requirement that can not meeting spatial travelling wave tube be less than 1.5.
Therefore, necessary on the basis of prior art a kind of structural design of research and design more reasonable, can be good at realizing the matched well of helix and transmission line, the standing wave debugging apparatus of when power capacity requirement of meeting spatial travelling wave tube low-voltage standing wave.
Summary of the invention
Goal of the invention: the purpose of this utility model is in order to solve the deficiencies in the prior art, provide a kind of structural design more reasonable, can make to realize matched well between helix and transmission line, make standing-wave ratio drop to 1.2 to 1.3, the standing wave debugging apparatus of the hiperspace travelling wave tube can meeting spatial travelling wave tube low-voltage standing-wave ratio requiring.
Technical scheme: in order to realize above object, technical solution adopted in the utility model is:
A kind of standing wave debugging apparatus of hiperspace travelling wave tube, it comprises: outer conductor, be arranged on the coupling cylinder of lead-in spiral end, be arranged near the transmission line top of lead-in spiral end, the impedance tapered line being connected with transmission line top, with the transmission-wire terminal that the impedance tapered line other end is connected, be wrapped in the polytetrafluoroethylene screen of transmission-wire terminal periphery.
As method for optimizing, the standing wave debugging apparatus of hiperspace travelling wave tube described in the utility model, has groove on described coupling cylinder, and being placed in of the supporting rod of lead-in spiral and lead-in spiral mated in a groove of offering.Meanwhile, coupling cylinder is about 2 to 3 pitch near the position of helix.
Coupling cylinder described in the utility model adopts the monel approaching with the shell material coefficient of expansion to make, and adopts the technique of laser welding to be welded on slow wave circuit, and work is poor little, and assembly precision is high.
Beneficial effect: the standing wave debugging apparatus of the hiperspace travelling wave tube that the utility model provides compared with prior art has the following advantages:
The standing wave debugging apparatus reasonable in design of the hiperspace travelling wave tube that the utility model provides, the coupling cylinder that employing is optimized structure, by part, reduce shielding cylinder internal diameter, can realize matched well between helix and transmission line, standing-wave ratio can be down to 1.2 to 1.3, thereby can the requirement of meeting spatial travelling wave tube low-voltage standing-wave ratio, the travelling wave tube stable performance that assembling obtains, have wide range of applications, can overcome many deficiencies of prior art.
Accompanying drawing explanation
The structural representation of the standing wave debugging apparatus of the hiperspace travelling wave tube that Fig. 1 provides for the utility model.
The structural representation of the coupling cylinder that Fig. 2 provides for the utility model.
Fig. 3 is the structural representation along the cross section of A-A direction in Fig. 2.
The comparison diagram of the standing-wave ratio in the Whole frequency band of the standing wave debugging apparatus that Fig. 4 provides for the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment and only for the utility model is described, be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
As shown in Figure 1 to Figure 3, a kind of standing wave debugging apparatus of hiperspace travelling wave tube, it comprises: outer conductor (1), be arranged on the coupling cylinder (3) of lead-in spiral (2) end, be arranged near the transmission line top (4) of lead-in spiral (2) end, the impedance tapered line (5) being connected with transmission line top (4), with the transmission-wire terminal (6) that impedance tapered line (5) other end is connected, be wrapped in the polytetrafluoroethylene screen (7) of transmission-wire terminal (6) periphery.
The standing wave debugging apparatus of above-described hiperspace travelling wave tube, described coupling cylinder (3) is made by monel, on coupling cylinder (3), have groove, being placed in of the supporting rod of lead-in spiral (2) and lead-in spiral (2) mated in a groove of tin (3) offering.
Get the standing wave debugging apparatus of the hiperspace travelling wave tube that above-described embodiment 1 prepares, be assembled in S-band space travelling wave tube, standing-wave ratio is measured, result as shown in Figure 4, the standing wave debugging apparatus that adopts the utility model to provide, can realize matched well between helix and transmission line, and standing-wave ratio can reach 1.2 to 1.3, much smaller than the standing-wave ratio of prior art 2.0, can meet the requirement of high standard space travelling wave tube low-voltage standing-wave ratio.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (2)
1. the standing wave debugging apparatus of a hiperspace travelling wave tube, it is characterized in that, it comprises: outer conductor (1), be arranged on the coupling cylinder (3) of lead-in spiral (2) end, be arranged near the transmission line top (4) of lead-in spiral (2) end, the impedance tapered line (5) being connected with transmission line top (4), with the transmission-wire terminal (6) that impedance tapered line (5) other end is connected, be wrapped in the polytetrafluoroethylene screen (7) of transmission-wire terminal (6) periphery.
2. the standing wave debugging apparatus of hiperspace travelling wave tube according to claim 1, it is characterized in that, on described coupling cylinder (3), have groove, being placed in of the supporting rod of lead-in spiral (2) and lead-in spiral (2) mated in a groove of tin (3) offering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587144.2U CN203553090U (en) | 2013-09-23 | 2013-09-23 | High-performance standing wave debugging apparatus for space travelling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320587144.2U CN203553090U (en) | 2013-09-23 | 2013-09-23 | High-performance standing wave debugging apparatus for space travelling wave tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553090U true CN203553090U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320587144.2U Expired - Fee Related CN203553090U (en) | 2013-09-23 | 2013-09-23 | High-performance standing wave debugging apparatus for space travelling wave tube |
Country Status (1)
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| CN (1) | CN203553090U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932394A (en) * | 2016-06-22 | 2016-09-07 | 电子科技大学 | Design method for helix traveling wave tube coaxial energy coupler |
| CN106783478A (en) * | 2017-03-14 | 2017-05-31 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes and its method for designing |
| CN112349566A (en) * | 2020-09-23 | 2021-02-09 | 电子科技大学 | Device for improving standing wave coefficient of millimeter wave helix traveling wave tube |
-
2013
- 2013-09-23 CN CN201320587144.2U patent/CN203553090U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932394A (en) * | 2016-06-22 | 2016-09-07 | 电子科技大学 | Design method for helix traveling wave tube coaxial energy coupler |
| CN105932394B (en) * | 2016-06-22 | 2019-01-11 | 电子科技大学 | A kind of design method of the coaxial energy coupler of helix TWT |
| CN106783478A (en) * | 2017-03-14 | 2017-05-31 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure based on microstrip line, travelling-wave tubes and its method for designing |
| CN106783478B (en) * | 2017-03-14 | 2018-09-28 | 中国电子科技集团公司第十二研究所 | A kind of right angle delivery of energy structure, travelling-wave tubes and its design method based on microstrip line |
| CN112349566A (en) * | 2020-09-23 | 2021-02-09 | 电子科技大学 | Device for improving standing wave coefficient of millimeter wave helix traveling wave tube |
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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: 20140416 Termination date: 20210923 |
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| CF01 | Termination of patent right due to non-payment of annual fee |