CN201444721U - Microwave transmission device - Google Patents
Microwave transmission device Download PDFInfo
- Publication number
- CN201444721U CN201444721U CN2009200278793U CN200920027879U CN201444721U CN 201444721 U CN201444721 U CN 201444721U CN 2009200278793 U CN2009200278793 U CN 2009200278793U CN 200920027879 U CN200920027879 U CN 200920027879U CN 201444721 U CN201444721 U CN 201444721U
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- CN
- China
- Prior art keywords
- waveguide
- microwave transmission
- phase modulation
- sampling
- circulator
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a microwave transmission device, which is used in the microwave transmission of the medical linear accelerator. The microwave transmission device comprises a 45-degree bend waveguide connected with an accelerating tube and a circular square conversion tube connected with a magnetron, a soft waveguide, a sampling waveguide, a three-terminal circulator and a 90-degree sampling waveguide are connected in sequence between the 45-degree bend waveguide and the circular square conversion tube, and the third terminal of the three-terminal circulator is connected with a phase modulation waveguide and a water load in sequence. As the three-terminal circulator is used as the isolation component, the utility model has the advantages of high degree of isolation, small size and low loss. The circulator requires no dry load, thereby reducing the cost. The phase modulation for microwave transmission can be realized through the rotation of the handle, thereby simplifying the operation and reducing the time required to reach the stable state.
Description
Technical field
The utility model relates to a kind of microwave transmission unit, is used for the microwave transmission of medical electron linear accelerator.
Background technology
Microwave transmission unit is installed between the accelerating tube and magnetron of medical electron linear accelerator, its effect microwave power that to be forward transmitted produced by the magnetron self-excitation is to accelerating tube, reverse isolation is fed back to the reflection power of magnetron by accelerating tube, and by the water load absorption, to reach the purpose of magnetron operate as normal.
The microwave transmission unit of traditional medical electron linear accelerator, volume is big, and loss is big, changes the troublesome poeration of microwave transmission phase place, and the time that reaches stable state is long, and needs a dried load, the cost height installed on the circulator more.
Summary of the invention
The purpose of this utility model is to provide a kind of microwave transmission unit, and volume is little, and loss is little, and cost is low, changes the easy and simple to handle of microwave transmission phase place, and the time that reaches stable state is short.
Microwave transmission unit described in the utility model, 45 ° of waveguide bends that connect accelerating tube and the circle side's crossover connection that is connected magnetron are arranged, connect flexible waveguide, sampling waveguide, three end circulators and 90 ° of sampling waveguide bends between 45 ° of waveguide bends and the circle side's crossover connection successively, the 3rd mouthful of three end circulators connects phase modulation waveguide and water load successively.
Dress is by the manual phase shifter of rotary handle control in the phase modulation waveguide.
The utility model microwave transmission unit, isolating device uses three end circulators, isolation height not only, and volume is little, loss is little, need not again on the circulator dried load is installed, cost is low, utilizes the rotation of handle can change the phase adjusted of microwave transmission, easy and simple to handle, the time that reaches stable state is short.
Description of drawings
Fig. 1, the utility model one example structure schematic diagram.
Among the figure: 1,45 ° of waveguide bends 2, flexible waveguide 3, sampling waveguide 4,5,90 ° of samplings of three end circulators waveguide bends 6, phase modulation waveguide 7, water load 8, circle side crossover connection 9, magnetron 10, manual phase shifter 11, accelerating tube.
Embodiment
The present invention is further illustrated below in conjunction with the embodiment accompanying drawing.
As shown in the figure, microwave transmission unit described in the utility model, 45 ° of waveguide bends 1 that connect accelerating tube 11 and the circle side's crossover connection 8 that is connected magnetron 9 are arranged, connect flexible waveguide 2, sampling waveguide 3, three end circulators 4 and 90 ° of sampling waveguide bends 5 between 45 ° of waveguide bends 1 and the circle side's crossover connection 8 successively, the 3rd mouthful of three end circulators 4 connects phase modulation waveguide 6 and water load 7 successively, and the manual phase shifter 10 by rotary handle control is housed in the phase modulation waveguide 6.
Operation principle:
The microwave that magnetron 9 self-excitations produce arrives first mouthful of three end circulators 4 by 8,90 ° of samplings of circle side's crossover connection waveguide bend 5, defeated by second oral instructions of three end circulators 4 then, arrive accelerating tube 11 through over-sampling waveguide 3,2,45 ° of waveguide bends of flexible waveguide 1 successively, realize microwave transmission.
The microwave of accelerating tube 11 reflections passes through the 3rd mouthful and phase modulation waveguide 6 of 45 ° of waveguide bends 1, flexible waveguide 2, sampling waveguide 3 and three end circulators 4 successively, arrive water load 7, and absorbed by water load 7, utilize the manual phase shifter 10 in the phase modulation waveguide 6, can reach the purpose that changes the microwave transmission phase place by rotating its handle.
Claims (2)
1. microwave transmission unit, it is characterized in that having 45 ° of waveguide bends that connect accelerating tube and the circle side's crossover connection that is connected magnetron, connect flexible waveguide, sampling waveguide, three end circulators and 90 ° of sampling waveguide bends between 45 ° of waveguide bends and the circle side's crossover connection successively, the 3rd mouthful of three end circulators connects phase modulation waveguide and water load successively.
2. microwave transmission unit according to claim 1 is characterized in that being equipped with in the phase modulation waveguide the manual phase shifter by rotary handle control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278793U CN201444721U (en) | 2009-06-23 | 2009-06-23 | Microwave transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278793U CN201444721U (en) | 2009-06-23 | 2009-06-23 | Microwave transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444721U true CN201444721U (en) | 2010-04-28 |
Family
ID=42549400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200278793U Expired - Fee Related CN201444721U (en) | 2009-06-23 | 2009-06-23 | Microwave transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474768A (en) * | 2013-09-17 | 2013-12-25 | 国网河南省电力公司焦作供电公司 | Circular waveguide antenna feeder antenna system |
-
2009
- 2009-06-23 CN CN2009200278793U patent/CN201444721U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474768A (en) * | 2013-09-17 | 2013-12-25 | 国网河南省电力公司焦作供电公司 | Circular waveguide antenna feeder antenna system |
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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: 20100428 Termination date: 20160623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |