CN210136996U - Miniature wide band section waveguide isolator - Google Patents
Miniature wide band section waveguide isolator Download PDFInfo
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- CN210136996U CN210136996U CN201921261065.6U CN201921261065U CN210136996U CN 210136996 U CN210136996 U CN 210136996U CN 201921261065 U CN201921261065 U CN 201921261065U CN 210136996 U CN210136996 U CN 210136996U
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Abstract
The utility model discloses a miniature wide band waveguide isolator, which comprises an upper shell and a lower shell which are connected, wherein one side of the lower shell, which is close to the upper shell, is provided with a waveguide cavity, matching tables are respectively arranged on the bottom surface of the waveguide cavity and one side of the upper shell, which is close to the lower shell, and the two matching tables are oppositely arranged; the matching table is Y-shaped, and three ends of the Y-shaped matching table are of a multi-layer step structure respectively. The matching table with the multilayer step structure can improve the frequency bandwidth of the waveguide isolator to a great extent and reduce the size of a waveguide cavity, and manufacturers can adjust the bandwidth of the waveguide isolator by changing the layer number, the height, the width and the like of the steps; after the size of the waveguide cavity is reduced, the whole size of the waveguide isolator can be reduced, and therefore the waveguide isolator can be miniaturized.
Description
Technical Field
The utility model relates to a microwave wireless communication technical field especially relates to a miniature wide band section waveguide isolator.
Background
As the current communication technology is moving towards the 5G technology field, the technical index requirements for microwave passive devices are also continuously increasing, wherein broadband and miniaturization are the urgent requirements of the current development.
Typical waveguide isolators typically employ an inverted triangular or cylindrical matching stage, which limits the frequency bandwidth and increases the size of the wideband waveguide isolator.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a miniature broadband waveguide isolator is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a micro broadband waveguide isolator comprises an upper shell and a lower shell which are connected, wherein a waveguide cavity is arranged on one side of the lower shell, which is close to the upper shell, matching tables are respectively arranged on the bottom surface of the waveguide cavity and one side of the upper shell, which is close to the lower shell, and the two matching tables are oppositely arranged; the matching table is Y-shaped, and three ends of the Y-shaped matching table are of a multi-layer step structure respectively.
Furthermore, still including adjusting the post, multilayer stair structure includes first step portion, second step portion and the third step portion that sets gradually by supreme down, adjust the post and locate on the second step portion.
Further, the lower shell, a matching table on the lower shell and an adjusting column on the matching table of the lower shell are integrally milled and formed; the upper shell, the matching platform on the upper shell and the adjusting column on the matching platform of the upper shell are integrally milled and formed.
The matching platform is provided with a containing groove matched with the ferrite, one end of the ferrite is arranged in the containing groove, and the other end of the ferrite is connected with the polytetrafluoroethylene medium.
Further, the upper shell and the lower shell are respectively provided with a mounting hole, a permanent magnet is arranged in the mounting hole, the permanent magnet, the ferrite and the polytetrafluoroethylene medium are arranged in a common central shaft, and the central axis of the matching table is arranged in a collinear manner with the central shaft of the permanent magnet.
Furthermore, the waveguide cavity is T-shaped, the waveguide cavity is communicated with three side faces of the lower shell to form an input port, an output port and an isolation port, and a microwave absorption load is arranged in the isolation port.
Furthermore, a clamping groove matched with the microwave absorption load is arranged in the isolation port.
Furthermore, a shielding cover plate is arranged at an opening of the isolation port and connected with the upper shell and the lower shell.
Furthermore, the wall surface of the transverse part of the T-shaped waveguide cavity is provided with a bump extending towards the matching platform.
Further, the convex block is triangular.
The beneficial effects of the utility model reside in that: the matching table with the multilayer step structure can improve the frequency bandwidth of the waveguide isolator to a great extent and reduce the size of a waveguide cavity, and manufacturers can adjust the bandwidth of the waveguide isolator by changing the layer number, the height, the width and the like of the steps; after the size of the waveguide cavity is reduced, the whole size of the waveguide isolator can be reduced, and therefore the waveguide isolator can be miniaturized.
Drawings
Fig. 1 is a schematic structural diagram of an overall structure of a micro broadband waveguide isolator according to a first embodiment of the present invention;
fig. 2 is an exploded view of a micro wideband waveguide isolator according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a micro broadband waveguide isolator according to a first embodiment of the present invention (after the upper housing and the shielding cover plate are hidden).
Description of reference numerals:
1. an upper housing; 2. a lower housing; 3. a waveguide cavity; 4. a matching table; 5. an adjustment column; 6. a first step portion; 7. a second step portion; 8. a third step portion; 9. a polytetrafluoroethylene medium; 10. a ferrite; 11. a containing groove; 12. mounting holes; 13. a permanent magnet; 14. an input port; 15. an output port; 16. an isolated port; 17. a microwave absorbing load; 18. a card slot; 19. a shielding cover plate; 20. and (4) a bump.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 3, a miniature wideband waveguide isolator includes an upper housing 1 and a lower housing 2 connected to each other, a waveguide cavity 3 is disposed on one side of the lower housing 2 close to the upper housing 1, matching stages 4 are respectively disposed on a bottom surface of the waveguide cavity 3 and one side of the upper housing 1 close to the lower housing 2, and the two matching stages 4 are disposed opposite to each other; the matching table 4 is Y-shaped, and three ends of the Y-shaped matching table 4 are of a multi-layer step structure respectively.
The utility model discloses a structural principle brief follows as follows: the input port 14 and the output port 15 use symmetrical multi-layer stepped matching tables 4, each layer of step can improve the bandwidth of the device in an effective range, the isolation port 16 also uses the multi-layer stepped matching tables 4 to reduce the length of the microwave absorption load 17, so that the whole width and length of the device are reduced, the whole width of the device is much smaller than the working center frequency of the waveguide isolator by half wavelength (lambda/2), and miniaturization is realized.
From the above description, the beneficial effects of the present invention are: the matching table 4 with the multilayer step structure can improve the frequency bandwidth of the waveguide isolator to a great extent and reduce the size of the waveguide cavity 3, and manufacturers can adjust the bandwidth of the waveguide isolator by changing the layer number, the height, the width and the like of the steps; after the size of the waveguide cavity 3 is reduced, the whole size of the waveguide isolator can be reduced, and therefore the miniaturization of the waveguide isolator is achieved.
Further, still include and adjust post 5, multilayer stair structure includes first step portion 6, second step portion 7 and the third step portion 8 that sets gradually from lower to upper, adjust post 5 and locate on the second step portion 7.
Further, the lower shell 2, a matching table 4 on the lower shell 2 and an adjusting column 5 on the matching table 4 of the lower shell 2 are integrally milled and formed; the upper shell 1, the matching table 4 on the upper shell 1 and the adjusting column 5 on the matching table 4 of the upper shell 1 are integrally milled and formed.
It can be known from the above description that the regulation post 5 that is used for adjusting port standing wave and isolation performance can select aluminium and brass preparation for use, so add man-hour in actual processing, adjust post 5, match platform 4 and go up/down the casing and can integrated into one piece, has abandoned prior art's the way of splicing regulation post 5 on matching platform 4 (prior art bonding regulation post 5 and matching platform 4 time, the assembler need constantly remove regulation post 5 and debug in order to look for the best matching point), does benefit to and reduces the debugging degree of difficulty, reduces waste in man-hour, control manufacturing cost.
Further, still include polytetrafluoroethylene medium 9 and two ferrites 10, be equipped with on the matching platform 4 with the storage tank 11 of ferrite 10 looks adaptation, the one end of ferrite 10 is located in the storage tank 11, the other end of ferrite 10 is connected polytetrafluoroethylene medium 9.
From the above description, the matching platform 4 is provided with the accommodating groove 11 matched with the ferrite 10, so that the ferrite 10 can be accurately positioned, the debugging difficulty is reduced, the labor hour waste is reduced, and the production cost is controlled. Optionally, the teflon media 9 is respectively connected with the two ferrites 10 by gluing.
Further, be equipped with mounting hole 12 on upper casing 1 and the lower casing 2 respectively, be equipped with permanent magnet 13 in the mounting hole 12, permanent magnet 13, ferrite 10 and polytetrafluoroethylene medium 9 center axle setting altogether, the axis of matching platform 4 with the center axle collineation setting of permanent magnet 13.
Further, the waveguide cavity 3 is T-shaped, the waveguide cavity 3 is communicated with three side surfaces of the lower shell 2 to form an input port 14, an output port 15 and an isolation port 16, and a microwave absorption load 17 is arranged in the isolation port 16.
Further, a clamping groove 18 matched with the microwave absorption load 17 is arranged in the isolation port 16.
As can be seen from the above description, the arrangement of the card slot 18 can accurately position the microwave absorbing load 17, thereby reducing the debugging difficulty, reducing the labor hour waste, and controlling the production cost.
Further, a shielding cover plate 19 is arranged at an opening of the isolation port 16, and the shielding cover plate 19 is connected with the upper shell 1 and the lower shell 2.
Further, a wall surface of a lateral portion of the T-shaped waveguide cavity 3 has a bump 20 extending toward the matching stage 4.
Further, the bump 20 is triangular.
Example one
Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: a micro broadband waveguide isolator comprises an upper shell 1 and a lower shell 2 which are connected, wherein a waveguide cavity 3 is arranged on one side, close to the upper shell 1, of the lower shell 2, matching platforms 4 are respectively arranged on the bottom surface of the waveguide cavity 3 and one side, close to the lower shell 2, of the upper shell 1, and the two matching platforms 4 are oppositely arranged; the matching table 4 is Y-shaped, and three ends of the Y-shaped matching table 4 are of a multi-layer step structure respectively. In this embodiment, the upper case 1 and the lower case 2 are connected by screws.
As shown in fig. 3, the multi-step structure further includes an adjusting column 5, the multi-step structure includes a first step portion 6, a second step portion 7 and a third step portion 8, which are sequentially arranged from bottom to top, and the adjusting column 5 is disposed on the second step portion 7. Preferably, the lower shell 2, the matching table 4 on the lower shell 2 and the adjusting column 5 on the matching table 4 of the lower shell 2 are integrally milled and formed; the upper shell 1, the matching table 4 on the upper shell 1 and the adjusting column 5 on the matching table 4 of the upper shell 1 are integrally milled and formed. It should be noted that, although the number of layers of the multi-layer stepped structure is three in this embodiment, in other embodiments, the number of layers of the multi-layer stepped structure may also be other values, such as two layers, four layers, five layers, and so on. The adjusting column 5 is made of metal such as aluminum or copper.
Still include polytetrafluoroethylene medium 9 and two ferrites 10, be equipped with on the matching platform 4 with the storage tank 11 of ferrite 10 looks adaptation, the one end of ferrite 10 is located in the storage tank 11, the other end of ferrite 10 is connected polytetrafluoroethylene medium 9. The depth of the receiving groove 11 is generally 0.15 mm.
Go up and be equipped with mounting hole 12 on casing 1 and the lower casing 2 respectively, be equipped with permanent magnet 13 in the mounting hole 12, permanent magnet 13, ferrite 10 and polytetrafluoroethylene medium 9 center axle setting altogether, match the axis of platform 4 with the center axle collineation setting of permanent magnet 13. The permanent magnet 13 is a samarium cobalt magnet or a ferrite 10 magnet magnetized by a magnetizing and demagnetizing machine.
In this embodiment, the waveguide cavity 3 is T-shaped, the waveguide cavity 3 communicates with three side surfaces of the lower housing 2 to form an input port 14, an output port 15, and an isolation port 16, and a microwave absorption load 17 is disposed in the isolation port 16.
Further, a clamping groove 18 matched with the microwave absorption load 17 is arranged in the isolation port 16.
Referring to fig. 1 and 2, a shielding cover plate 19 is disposed at an opening of the isolation port 16, and the shielding cover plate 19 connects the upper housing 1 and the lower housing 2. In this embodiment, the shielding cover plate 19 is screwed with the upper housing 1 and the lower housing 2, respectively.
Optionally, the wall surface of the lateral portion of the T-shaped waveguide cavity 3 has a bump 20 extending toward the matching stage 4. In detail, the bump 20 has a triangular shape.
In the embodiment, the matching table 4 with a multilayer step structure and a metal aluminum column (namely, an adjusting column 5) are integrally machined on the inner wall of the waveguide cavity 3, and the arrangement positions of the matching table 4 and the adjusting column 5 are extremely accurate; in addition, the debugging step of the waveguide isolator can be omitted by positioning the ferrite 10 by the accommodating groove 11 and positioning the microwave absorption load 17 by the clamping groove 18, in other words, the waveguide isolator can be free from debugging due to the extremely accurate positions of the ferrite 10 and the clamping groove, and the production cost of manufacturers is greatly reduced.
Next, the processing procedure of the waveguide isolator of the present embodiment is briefly described: firstly, putting the upper shell 1 and the lower shell 2 with corresponding labels one by one; then, taking out the two ferrites 10 and sticking the two ferrites into the accommodating groove 11 of the matching platform 4 of the upper shell 1 and the accommodating groove 11 of the matching platform 4 of the lower shell 2 respectively by using acetal drying glue (or other glue with stronger viscosity); then, the low-dielectric polytetrafluoroethylene medium 9 is glued on the ferrite 10 which is already glued on the lower shell 2 and/or the upper shell 1 by using the same glue; then, coating a layer of acetal drying glue around the microwave absorption load 17, and then placing the glued microwave absorption load 17 in a clamping groove 18 of an isolation port 16 of the lower shell 2 by using tweezers; then the upper shell 1 and the lower shell 2 are combined and fastened by screws, and the shielding cover plate 19 is connected; finally, the finished product, which has been combined and filled with all internal materials, is placed in a thermostatic oven at 85 ℃, the acetal dried glue is dried, and then taken out and tested for device performance using a network analyzer.
In summary, the micro wide band waveguide isolator provided by the utility model has small volume and wide frequency band; the debugging difficulty is low, and even the debugging can be avoided; the assembly steps are few, the labor hour consumption is low, and the production cost is low.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a miniature wide band section waveguide isolator, includes continuous last casing and lower casing, the casing is close to down one side of going up the casing is equipped with waveguide cavity, its characterized in that: matching tables are respectively arranged on the bottom surface of the waveguide cavity and one side of the upper shell close to the lower shell, and the two matching tables are oppositely arranged; the matching table is Y-shaped, and three ends of the Y-shaped matching table are of a multi-layer step structure respectively.
2. The miniature wide band waveguide isolator of claim 1, wherein: still including adjusting the post, multilayer stair structure includes first step portion, second step portion and the third step portion that sets gradually by supreme down, adjust the post and locate on the second step portion.
3. The miniature wide band waveguide isolator of claim 2, wherein: the lower shell, the matching table on the lower shell and the adjusting column on the matching table of the lower shell are integrally milled and formed; the upper shell, the matching platform on the upper shell and the adjusting column on the matching platform of the upper shell are integrally milled and formed.
4. The miniature wide band waveguide isolator of claim 1, wherein: the matching platform is provided with a containing groove matched with the ferrite, one end of the ferrite is arranged in the containing groove, and the other end of the ferrite is connected with the polytetrafluoroethylene medium.
5. The miniature wide band waveguide isolator of claim 4, wherein: the upper shell and the lower shell are respectively provided with a mounting hole, a permanent magnet is arranged in the mounting hole, the permanent magnet, the ferrite and the polytetrafluoroethylene medium are arranged in a common central shaft, and the central shaft of the matching table is collinearly arranged with the central shaft of the permanent magnet.
6. The miniature wide band waveguide isolator of claim 1, wherein: the waveguide cavity is T-shaped, the waveguide cavity is communicated with three side faces of the lower shell to form an input port, an output port and an isolation port, and a microwave absorption load is arranged in the isolation port.
7. The miniature wide band waveguide isolator of claim 6, wherein: and a clamping groove matched with the microwave absorption load is arranged in the isolation port.
8. The miniature wide band waveguide isolator of claim 6, wherein: and a shielding cover plate is arranged at the opening of the isolation port and connected with the upper shell and the lower shell.
9. The miniature wide band waveguide isolator of claim 6, wherein: the wall surface of the transverse part of the T-shaped waveguide cavity is provided with a bump extending towards the matching platform.
10. The miniature wide band waveguide isolator of claim 9, wherein: the convex block is triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261065.6U CN210136996U (en) | 2019-08-02 | 2019-08-02 | Miniature wide band section waveguide isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261065.6U CN210136996U (en) | 2019-08-02 | 2019-08-02 | Miniature wide band section waveguide isolator |
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| Publication Number | Publication Date |
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| CN210136996U true CN210136996U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921261065.6U Active CN210136996U (en) | 2019-08-02 | 2019-08-02 | Miniature wide band section waveguide isolator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839164A (en) * | 2021-10-15 | 2021-12-24 | 散裂中子源科学中心 | High-power Y-junction type waveguide circulator |
| CN114256574A (en) * | 2021-12-28 | 2022-03-29 | 中国航天时代电子有限公司 | Novel high-reliability waveguide ring isolation assembly structure |
| CN114628874A (en) * | 2020-12-11 | 2022-06-14 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
-
2019
- 2019-08-02 CN CN201921261065.6U patent/CN210136996U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628874A (en) * | 2020-12-11 | 2022-06-14 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
| CN114628874B (en) * | 2020-12-11 | 2023-09-12 | 华为技术有限公司 | Signal isolator and microwave outdoor unit |
| CN113839164A (en) * | 2021-10-15 | 2021-12-24 | 散裂中子源科学中心 | High-power Y-junction type waveguide circulator |
| CN114256574A (en) * | 2021-12-28 | 2022-03-29 | 中国航天时代电子有限公司 | Novel high-reliability waveguide ring isolation assembly structure |
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