CN208753531U - A kind of ion involution antenna uncoupling device - Google Patents
A kind of ion involution antenna uncoupling device Download PDFInfo
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- CN208753531U CN208753531U CN201821599241.2U CN201821599241U CN208753531U CN 208753531 U CN208753531 U CN 208753531U CN 201821599241 U CN201821599241 U CN 201821599241U CN 208753531 U CN208753531 U CN 208753531U
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- antenna
- type threeway
- type
- current
- uncoupling device
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Abstract
The utility model discloses a kind of ion involution antenna uncoupling devices, for any two antenna current band, the first T-type threeway is provided at the standing wave voltage maximum point of each antenna current strap, the second T-type threeway is provided between two antenna current straps, the two side ends of second T-type threeway are connect by isometric transmission line with the center-side of the first T-type threeway of two antenna current straps respectively, and the center-side of the second T-type threeway is connected with vacuum tunable capacitor.Vacuum tunable capacitor is arranged in above-mentioned uncoupling device by way of short circuit between two antenna current straps, removes being mutually coupled between antenna by changing capacitance, antenna is made to reach the state of balance, it deploys and tests conducive to antenna, structure is simple, strong applicability, and decoupling effect is good.
Description
Technical field
The utility model relates to ion cyclotron wave heating system radio-frequency antenna technical field more particularly to a kind of ion involutions
Antenna uncoupling device.
Background technique
On tokamak device (EAST), ion involution frequency range wave (ICRF) has been successfully applied for plasma and adds
In heat and In Lhcd, also it is expected and plays an important role in international nuclear fusion experimental reactor (ITER).EAST is current generation
It has the ability to carry out high power, long pulse steady-state operation in boundary, and has very in structure design and the method for operation with ITER device
The magnetic confinement nuclear fusion device of big similarity.Ion involution rf wave heating plasma is important in magnetic confinement fusion field
Heating method can heat and rotate ion.Ion involution antenna is the critical component of radio frequency Wave heating, existing EAST upper one
As mostly use the antenna arrays of circumferential more current emissions bands compositions, to meet the requirement of high-power heating and In Lhcd.
However, such more radiation zone antennas are due to its close structure and antenna front ends are equipped with Faraday shield, experiment
Mutual interference between middle discovery antenna is especially strong, extreme influence injecting power and system stability, especially for more arrays
Radiation zone antenna, pole is more complicated to the power coupling condition for radiating interband with circumferential direction, and the adverse effect of introducing is more significant, at
To restrict one of ion involution high power, maximum bottleneck of steady-state operation.Power mutual coupling between this antenna is largely
The Measure Precision of system is affected, is especially obviously to the adverse effect of systematic steady state operation.
To solve this problem it is necessary to eliminate this unfavorable shadow by adding an adjustable device outside antenna
It rings, reduces and intercouple between this current strap so that eliminating.It is currently used to have side that is fixed and sliding adjustable minor matters
Formula, fixed minor matters length fixation is non-adjustable, needs to re-work decoupling minor matters if there is antenna fine tuning, to meet decoupling need
It wants；Another kind is decoupling minor matters using the adjustable minor matters of slidingtype, can conveniently adjust direct length, achievees the purpose that decoupling, but
It is this mode since by the way of sliding contact, sliding contact is limited by the ability of high current, if there is high current is logical
Crossing contact has the possibility burnt out, and decoupling is made to fail.
Utility model content
The purpose of this utility model is to provide a kind of ion involution antenna uncoupling devices, facilitate adjusting decoupling minor matters long
Degree improves the ability by high current, realizes the change of decoupling minor matters electrical length, reaches uncoupling purpose.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of ion involution antenna uncoupling device is used for any two antenna current band, each antenna current strap
It is provided with the first T-type threeway at standing wave voltage maximum point, the second T-type threeway, the second T-type are provided between two antenna current straps
The two side ends of threeway are connect by isometric transmission line with the center-side of the first T-type threeway of two antenna current straps respectively, the
The center-side of two T-type threeways is connected with vacuum tunable capacitor.
Particularly, the length of the position of standing wave voltage maximum point and transmission line is according to the adjustable setting of current strap frequency.
Particularly, the first T-type threeway, the second T-type threeway, transmission line are all made of 50 ohm coaxial lines.
Particularly, the setting value of vacuum tunable capacitor is capacitance needed for decoupling.
To sum up, the beneficial effects of the utility model are, compared with prior art, the ion involution antenna uncoupling device
Vacuum tunable capacitor is set between two antenna current straps by way of short circuit, is removed between antenna by changing capacitance
It is mutually coupled, antenna is made to reach the state of balance, be conducive to antenna and deploy and test, structure is simple, strong applicability, decoupling effect
It is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ion involution antenna uncoupling device provided by the embodiment of the utility model
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Refering to Figure 1, being used for any two antenna the present embodiment provides a kind of ion involution antenna uncoupling device
In current strap, including shell 6 and internal antenna current strap 1, the first T-type threeway 2, the second T-type threeway 3 and vacuum tunable capacitor
4。
The two sides of first T-type threeway 2 are terminated at the standing wave voltage on antenna current strap 1 and being located at each antenna current strap 1
At maximum point, standing wave voltage maximum point is determined by calculating with Network Analyzer, and the two side ends of the second T-type threeway 3 pass through respectively
Isometric transmission line 5 is connect with the center-side of the first T-type threeway 2 of two antenna current straps 1, and vacuum tunable capacitor 4 is connected to
The center-side of second T-type threeway 3.
Wherein, the length of the position of standing wave voltage maximum point and transmission line 5 is according to the adjustable setting of current strap frequency.It is fixed
The standing wave voltage maximum point of position and the transmission line 5 of regular length are directed to specific frequency, and both adjustment need to be corresponded to by changing frequency.
The setting value of vacuum tunable capacitor 4 is capacitance needed for decoupling, and needs the substantially section of capacitor required for computation decoupling,
Trimmer amount removes intercoupling for antenna to realize again.
First T-type threeway 2, the second T-type threeway 3, transmission line 5 are all made of 9 inches of 50 ohm of 5 knots of standard coaxial line transmission line
Structure.
To sum up, above-mentioned ion involution antenna uncoupling device is arranged between two antenna current straps by short circuit mode
Vacuum tunable capacitor removes being mutually coupled between antenna by changing capacitance, so that antenna is reached the state of balance, be conducive to day
Line allotment and experiment, structure is simple, strong applicability, and decoupling effect is good.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned example
Limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these changes
Change and change is fallen within the scope of the claimed invention.The utility model requires protection scope is wanted by appended right
Ask book and its equivalent thereof.
Claims (4)
1. a kind of ion involution antenna uncoupling device is used for any two antenna current band, which is characterized in that each antenna
It is provided with the first T-type threeway at the standing wave voltage maximum point of current strap, the second T-type three is provided between two antenna current straps
Logical, the two side ends of the second T-type threeway pass through the first T-type three of isometric transmission line and described two antenna current straps respectively
Logical center-side connection, the center-side of the second T-type threeway are connected with vacuum tunable capacitor.
2. ion involution antenna uncoupling device according to claim 1, it is characterised in that: the standing wave voltage maximum point
Position and the transmission line length according to the adjustable setting of current strap frequency.
3. ion involution antenna uncoupling device according to claim 1, it is characterised in that: the first T-type threeway,
Two T-type threeways, transmission line are all made of 50 ohm coaxial lines.
4. ion involution antenna uncoupling device according to claim 1, it is characterised in that: the vacuum tunable capacitor
Setting value is capacitance needed for decoupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821599241.2U CN208753531U (en) | 2018-09-28 | 2018-09-28 | A kind of ion involution antenna uncoupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821599241.2U CN208753531U (en) | 2018-09-28 | 2018-09-28 | A kind of ion involution antenna uncoupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208753531U true CN208753531U (en) | 2019-04-16 |
Family
ID=66085354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821599241.2U Expired - Fee Related CN208753531U (en) | 2018-09-28 | 2018-09-28 | A kind of ion involution antenna uncoupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208753531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612006A (en) * | 2021-07-28 | 2021-11-05 | 中国科学院合肥物质科学研究院 | Distributed T-shaped traveling wave ion cyclotron antenna structure |
| CN116130912A (en) * | 2023-04-17 | 2023-05-16 | 中国科学院合肥物质科学研究院 | Power transmission system |
-
2018
- 2018-09-28 CN CN201821599241.2U patent/CN208753531U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612006A (en) * | 2021-07-28 | 2021-11-05 | 中国科学院合肥物质科学研究院 | Distributed T-shaped traveling wave ion cyclotron antenna structure |
| CN116130912A (en) * | 2023-04-17 | 2023-05-16 | 中国科学院合肥物质科学研究院 | Power transmission system |
| CN116130912B (en) * | 2023-04-17 | 2023-06-13 | 中国科学院合肥物质科学研究院 | Power transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20190928 |