CN202167598U - Microwave resonant isolator - Google Patents
Microwave resonant isolator Download PDFInfo
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- CN202167598U CN202167598U CN2011203084176U CN201120308417U CN202167598U CN 202167598 U CN202167598 U CN 202167598U CN 2011203084176 U CN2011203084176 U CN 2011203084176U CN 201120308417 U CN201120308417 U CN 201120308417U CN 202167598 U CN202167598 U CN 202167598U
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Abstract
The utility model discloses a microwave resonant isolator, which belongs to the field of isolators and aims at solving the problem that plenty of existing isolators need to be used, the existing isolators are high in cost and dissatisfactory in efficiency, thereby leading cost of a whole industrial microwave sintering furnace to be increased. The microwave resonant isolator comprises a cavity and flanges installed at two ends of the cavity, a plurality of ferrites are arranged in the cavity close to the wall surface, a cover plate is respectively installed on the upper side face and the lower side face of the cavity, a cooling water jacket is arranged on the outer side face of the cavity, a blocking plate fixed on the cover plates is arranged on the outer side of the cooling water jacket, permanent magnets are arranged between the blocking plate and the outer wall surface of the cavity, and the positions of the permanent magnets correspond to the positions of the ferrites. The microwave resonant isolator is high in efficiency, good in performance, low in cost and convenient and practical.
Description
Technical field
The utility model relates to the isolator field, is specially a kind of microwave resonance formula isolator.
Background technology
Isolator is claimed isolator again, and it is a kind of two-port device that allows the electromagnetic wave one-way transmission, and its sketch map is as shown in Figure 1.Very little from left port M to the forward electromagnetic wave attenuation of right output port N transmission, to the backward-wave of left port M transmission very big decay is arranged then from right output port N.Therefore, in microwave system, often be connected on isolator between microwave source and the load, to improve the coupling of microwave source and load.Like this can be so that can not return the microwave source input from the reflection power of load, avoid load impedance to change and the microwave source power output that causes and the change of operating frequency.
Existing isolator is to be added matched load and got by the knot circulator, and it mainly is made up of parts such as outer conductor, ferrite gyromagnet sheet, permanent magnet and inner wire, connectors.
Circulator commonly used is three port elements, and the signal transmission can be a clockwise direction, also counterclockwise.Circulator can be used as isolator, and more occasions are to constitute microwave circuit with other electronic devices.
Usually, isolator and circulator are in microwave structure, to put into Ferrite Material, and applying constant external magnetic field constitutes anisotropic medium in this zone.The transmission of electromagnetic wave three directions in this medium is different, thereby can realize one-way transmission.Ferrite Material is a kind of electronic ceramic, and material prescription and technology are varied, and concrete composition is decided with ferritic use occasion.
Aspect the industrial microwave sintering, most of producers all adopt many cover power synthetic methods to substitute single cover high-power microwave source at present.Industrial microwave sintering furnace particularly, whole body of heater just need tens covers or more than 100 covers, and now the cost of three end circulators of configuration and the every cover of water load more than 3000 yuan.
The basic principle of resonance isolator is the ferro resonance effect, and near the ferro resonance frequency (ω=ω 0), the ferrite of cross magnetization absorbs the energy of right-handed circular polarization ripple consumingly, and makes right hand wave receive very big decay, and the left-handed wave loss is very little.Shown in Fig. 2 (a), ferrite sheet should be that electromagnetic wave magnetic field is the place of circular polarization in square wave guide cavity position, and the Distribution of Magnetic Field of TE10 mould in the rectangular waveguide is Fig. 2 (b) along positive z direction, is Fig. 2 (c) along negative z direction.Under the ideal situation, forward is undamped, reverse nothing transmission.Suitably choose the position of ferrite diaphragm and just can realize unidirectional transmission property.The advantage of resonance isolator is to make simply compact conformation.Comparatively speaking, power capacity is bigger.
The utility model content
The isolator that uses to industrial microwave sintering furnace field is many; And the isolator cost is high, efficient is unsatisfactory; The defective that causes the cost of whole industrial microwave sintering furnace to heighten; The utility model aims to provide a kind of microwave resonance formula isolator, and this isolator efficient is high, performance is excellent, cost is low, convenient and practical.
To achieve these goals, the technical scheme that the utility model adopted is: said microwave resonance formula isolator comprises cavity and the flange that is contained in these cavity two ends; Its design feature is; In cavity, be furnished with the polylith ferrite near wall, on the side up and down of said cavity, cover plate be housed all, said cavity lateral surface is provided with cooling jacket; This cooling jacket outside is provided with fixing baffle plate on the cover board, is provided with between this baffle plate and the chamber outer wall face and the corresponding permanent magnet in ferrite position.
As further improvement to the utility model:
Said cover plate two ends are provided with the fixation clamp that is fixed on the cavity, the movable clip that is spirally connected on each fixation clamp, and this movable clip is fixed on cover plate on the cavity.
In order to regulate the performance index of isolator, improve isolation effect, the distance between said chamber outer wall face and the baffle plate is adjustable.
Said cooling jacket is the aluminum cooling jacket of spill, its outer water-cooled joint that is provided with.Through the cooling that circulates of conduit and water-cooled joint and outer water.
By said structure; Said microwave resonance formula isolator comprises cavity, strip permanent magnet, strip microwave ferrite, flange, water jacket and cover plate; Said cavity adopts the aluminum waveguide material, and said permanent magnet is the permanent-magnet component that the N30 neodymium iron boron processing of strip is magnetized.Strip microwave ferrite, cavity adopt BJ26 square type waveguide cavity, and cooling jacket is contained in outside the waveguide cavity, and E type aluminium flange joint is joined at two ends.Neodymium iron boron processing is magnetized and is bonded on the water jacket, is pressing with cover plate then, reaches fastening purpose, and cover plate and cavity adopt and be threaded, and adopts nut to lock to reach fastening purpose.More convenient installing/dismounting is economical and practical in the whole process.Wherein cavity adopts waveguide material, and material is used aluminium, is convenient to processing, cuts down finished cost.
Compared with prior art, the beneficial effect of the utility model is: the utility model is simple in structure, and is easy to loading and unloading, economical and practical, and material adopts aluminium, is convenient to processing, cuts down finished cost.And cost is low, and efficient is high, and industrial cost will reduce by 3～4 times after employing microwave resonance formula isolator replaces three end circulators, and the forward input loss is little, and reverse microwave isolation effect is good, and its main specific targets are following:
Frequency range 2.35～2.55GHZ;
Forward input loss 0.2～0.4HB;
Reverse isolation 18dB～20db;
Voltage standing wave ratio: 1.2;
Average power: 1～1.5KW.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to set forth.
Description of drawings
Fig. 1 is the schematic diagram of isolator;
Fig. 2 is the schematic diagram of existing resonance isolator;
Fig. 3 is the structure principle chart of a kind of embodiment of the utility model;
Fig. 4 is the A-A cutaway view of Fig. 3.
In the drawings
The 1-flange; 2-water-cooled conduit; The 3-fixation clamp; The 4-movable clip;
The 5-water jacket; 6-water-cooled joint; The 7-cavity; The 8-cover plate;
The 9-permanent magnet; The 10-baffle plate; The 11-ferrite;
Distance between X1-chamber outer wall face and the baffle plate.
Embodiment
A kind of microwave resonance formula isolator referring to Fig. 3 and Fig. 4, comprises flange 1, cavity 7, cover plate 8, permanent magnet 9, baffle plate 10, ferrite 11, and water-cooled conduit 2, fixation clamp 3, movable clip 4, cooling jacket 5, water-cooled joint 6.The BI26 rectangular cavities that said cavity 7 is integral type aluminums, inner chamber are rectangular build; The both sides welding spill aluminum cooling jacket 5 of cavity 7; Two ends welding aluminium flange joint 1; Be full of cooling water between spill aluminum cooling jacket 5 and cavity 7 outer walls, the cooling jacket 5 welding water-cooled joints 6 of cavity 7 both sides are respectively the cooling water input and output; The water-cooled conduit 2 that cooling jacket 5 usefulness are located at cooling jacket 5 outer walls connects, by the cooling that circulates of water-cooled conduit 2 and water-cooled joint 6 and outer water.
The two cover plates 8 of said cavity side about in the of 7 respectively is clipped in the middle by two fixation clamps 3, and with bolt fixation clamp 3 is connected with movable clip 4; Permanent magnet 9 keeps in touch with baffle plate 10 usefulness glue, closely pastes, and baffle plate 10 is fixed by bolts on the cover plate 8, and permanent magnet 9 is affixed to cavity 7 one sides, the adjustable gaps of baffle plate 10 and cavity 7; Ferrite 11 inserts between baffle plate 10 and cavity 7 outer walls, closely is close on the wall position and permanent magnet 9 correspondences with glue.
The content that the foregoing description is illustrated is to be understood that to these embodiment and only is used to be illustrated more clearly in the utility model; And be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.
Claims (7)
1. microwave resonance formula isolator; Comprise cavity (7) and be contained in the flange (1) at this cavity (7) two ends, it is characterized in that, in cavity (7), be furnished with polylith ferrite (11) near wall; In the side up and down of said cavity (7) cover plate (8) is housed all; The lateral surface of said cavity (7) is provided with cooling jacket (5), and this cooling jacket (5) outside is provided with the baffle plate (10) that is fixed on the cover plate (8), is provided with between this baffle plate (10) and cavity (7) outside wall surface and the corresponding permanent magnet in ferrite (11) position (9).
2. microwave resonance formula isolator according to claim 1 is characterized in that, said cavity (7) is a BJ26 square type waveguide cavity, and it adopts the aluminum waveguide material to process.
3. microwave resonance formula isolator according to claim 1 is characterized in that, said flange (1) is an E type aluminium flange joint.
4. microwave resonance formula isolator according to claim 1; It is characterized in that; Said cover plate (8) two ends are provided with the fixation clamp (3) that is fixed on the cavity (7), the movable clip (4) that is spirally connected on each fixation clamp (3), and this movable clip (4) is fixed on cover plate (8) on the cavity (7).
5. microwave resonance formula isolator according to claim 1 is characterized in that, the distance between said cavity (7) outside wall surface and the baffle plate (10) is adjustable.
6. microwave resonance formula isolator according to claim 1 is characterized in that, the permanent-magnet component that said permanent magnet (9) magnetizes for the N30 neodymium iron boron processing of strip.
7. microwave resonance formula isolator according to claim 1 is characterized in that, said cooling jacket (5) is the aluminum cooling jacket of spill, its outer water-cooled joint (6) that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203084176U CN202167598U (en) | 2011-08-23 | 2011-08-23 | Microwave resonant isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203084176U CN202167598U (en) | 2011-08-23 | 2011-08-23 | Microwave resonant isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167598U true CN202167598U (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203084176U Expired - Fee Related CN202167598U (en) | 2011-08-23 | 2011-08-23 | Microwave resonant isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202167598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873167A (en) * | 2014-02-20 | 2014-06-18 | 南京才华科技集团有限公司 | Microwave radio frequency network simulator |
| CN108521002A (en) * | 2018-03-30 | 2018-09-11 | 四川蔚宇电气有限责任公司 | Heavy-power circulator shell and heavy-power circulator |
-
2011
- 2011-08-23 CN CN2011203084176U patent/CN202167598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873167A (en) * | 2014-02-20 | 2014-06-18 | 南京才华科技集团有限公司 | Microwave radio frequency network simulator |
| CN108521002A (en) * | 2018-03-30 | 2018-09-11 | 四川蔚宇电气有限责任公司 | Heavy-power circulator shell and heavy-power circulator |
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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: 20120314 Termination date: 20150823 |
|
| EXPY | Termination of patent right or utility model |