CN109860968B - Novel high-reliability microwave circulator for aerospace - Google Patents
Novel high-reliability microwave circulator for aerospace Download PDFInfo
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- CN109860968B CN109860968B CN201811627980.2A CN201811627980A CN109860968B CN 109860968 B CN109860968 B CN 109860968B CN 201811627980 A CN201811627980 A CN 201811627980A CN 109860968 B CN109860968 B CN 109860968B
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Abstract
A novel high-reliability microwave circulator for aerospace belongs to the technical field of microwave isolators. The magnetic field permanent magnet comprises an upper shell, a lower shell, a matching structure, an upper rotating magnetic ferrite, a lower rotating magnetic ferrite, a medium ring, a medium spring and a permanent magnet. The inner side end faces of the upper shell and the lower shell are fixedly provided with matching structures; respectively fixing the upper rotary ferrite and the lower rotary ferrite on the matching structures of the upper shell and the lower shell by using adhesives; the medium ring is arranged on the upper rotary magnetic ferrite and the matching structure; the medium spring is positioned in the medium ring and between the two gyromagnetic ferrites; and a permanent magnet is arranged above the ferrite at the other end of the upper shell and the lower shell. The microwave circulator disclosed by the invention has good microwave performance, the bearing power can reach the kW magnitude, meanwhile, the medium ring can assist in positioning the upper-rotation magnetic ferrite and the lower-rotation magnetic ferrite, the medium spring supports the upper-rotation magnetic ferrite and the lower-rotation magnetic ferrite, the structure is stable and reliable, and the processing and assembling difficulty is low.
Description
Technical Field
The invention relates to a microwave and radio frequency component, in particular to a novel high-reliability microwave circulator for aerospace, and belongs to the technical field of microwave isolators.
Background
Microwave circulators are anisotropic elements and have very important applications in the microwave and radio frequency fields. The circulator can be connected behind a power source, protect the power source by utilizing the one-way transmission characteristic of the circulator, and can also be used as a receiving and transmitting switch, so that a receiving and transmitting path is effectively isolated, and the normal work of a link is ensured. A circulator applied in an aerospace environment is required to bear high power and ensure reliability.
The insulating medium is added into the cavity of the circulator, so that the movement of electrons can be hindered, the number of secondary electrons is reduced, the micro-discharge phenomenon is inhibited, and the vacuum power capacity is improved. The existing method is to process the insulating medium into a cylindrical structure, wherein grooves are formed at two ends of the cylindrical structure and used for accommodating gyromagnetic ferrite, and the grooves at the two ends are not communicated. The upper gyromagnetic ferrite substrate and the lower gyromagnetic ferrite substrate are completely wrapped by the insulating medium, so that the ferrites are stressed in the horizontal direction and the axial direction at the same time, and are more easily broken under the high-power condition, and the circulator fails. If the ferrite is prevented from being squeezed, a small air gap exists between the groove and the surface of the ferrite, and once the ferrite falls off from the cavity, the performance of the circulator is rapidly deteriorated and even the circulator cannot work normally. And the tolerance and the assembly precision of the grooves at the two ends of the medium need to be strictly controlled, so that the processing cost is increased, the assembly difficulty is improved, and the design and the processing of the circulator are not facilitated.
Therefore, a high-reliability circulator for aerospace is needed, so that the circulator can bear high power and is easy to machine and assemble.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a high-reliability microwave circulator for aerospace, which is characterized in that an insulating medium is processed into a medium ring and a medium spring structure, the medium ring is sleeved on the matching structure of an upper shell and a lower shell and the periphery of a ferrite, the medium spring is positioned in the medium ring and between the upper gyromagnetic ferrite and the lower gyromagnetic ferrite, the power capacity is improved, the ferrite is supported, and the medium ring, the medium spring, the shell, the matching structure and the ferrite are stably and reliably matched, the processing technology is simple, and the assembly is convenient.
The technical solution of the invention is as follows: a high-reliability novel microwave circulator for aerospace comprises an upper shell, a lower shell, a matching structure, a gyromagnetic ferrite, a medium spring and a permanent magnet; the upper shell and the lower shell are respectively provided with a constant magnet groove with a constant magnet arranged at one end, and matching structures for adjusting the microwave performance of the circulator are fixedly arranged on the surfaces of the other ends of the upper shell and the lower shell; the surfaces of the matching structures of the upper shell and the lower shell are both fixedly connected with gyromagnetic ferrites; the medium spring is positioned between the two gyromagnetic ferrites fixedly connected on the matching structures of the upper shell and the lower shell and is in pressing contact with the two gyromagnetic ferrites.
Further, the medium spring comprises a plurality of springs connected in parallel, and each spring is positioned between two gyromagnetic ferrites fixedly connected to the matching structures of the upper shell and the lower shell.
Further, the matching structure comprises a boss, and the gyromagnetic ferrite is fixedly installed on the surface of the boss.
The magnetic ferrite further comprises a medium ring, wherein the medium ring is sleeved on the outer circumference of the magnetic ferrite and is fixed on the boss through the extrusion effect when one ends of the mounting matching structures of the upper shell and the lower shell are fixedly connected.
Further, the matching structures of the upper shell and the lower shell are integrally formed with the upper shell and the lower shell respectively.
Further, the boss includes Y shape boss and cylindricality boss, the cylindricality boss is located Y shape boss, the gyromagnetic ferrite fixed mounting be in the cylindricality boss surface, and do not surpass the cylindricality boss is peripheral.
Furthermore, the medium ring is sleeved on the periphery of the cylindrical boss and is fixed on the Y-shaped boss through the extrusion effect when one ends of the upper shell and the lower shell which are provided with the matching structures are fixedly connected.
Furthermore, the boss is a triangular boss, the medium ring is sleeved on the periphery of the gyromagnetic ferrite, and the medium ring is fixed on the triangular boss through the extrusion effect when one ends of the upper shell and the lower shell which are provided with the matching structures are fixedly connected.
Furthermore, the side wall of the medium ring is provided with an exhaust hole.
Further, the permanent magnet fixing piece is used for fixing the permanent magnet, the permanent magnet fixing piece is of a U-shaped structure, and two top ends of the permanent magnet fixing piece are fixedly connected with the surfaces of the upper shell and the lower shell, wherein the permanent magnet is installed on the surfaces of the upper shell and the lower shell.
The invention has the beneficial effects that:
(1) the invention changes the mode of completely wrapping the medium into the combination form of the medium ring and the medium spring, and the medium ring is sleeved on the matching structure and the ferrite, thereby reducing the stress of the ferrite material, avoiding the ferrite from heating and breaking under the condition of high power and effectively increasing the power capacity of the circulator.
(2) The medium spring used in the invention is extruded when working normally to support the ferrite, once the ferrite falls off, the elasticity of the spring can keep the ferrite in close contact with the shell, thereby ensuring the normal working of the circulator and increasing the reliability.
(3) The medium ring used by the invention is sleeved on the matching structure and the periphery of the ferrite, and compared with the medium ring which is processed with grooves at two ends of a cylindrical medium, the medium ring is easier to realize and has lower processing cost.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a top view of a matching structure according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 4 is a top view of a matching structure according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a yoke in a third embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1-upper shell, 2-lower shell, 3-matching structure, 4-upper-rotation magnetic ferrite, 5-lower-rotation magnetic ferrite, 6-dielectric ring, 7-dielectric spring, 8-constant magnet and 9-constant magnet fixing piece
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in figures 1 and 2, a novel high-reliability microwave circulator for aerospace is formed by connecting an upper shell 1 and a lower shell 2 to form a circulator shell. The surface of one end of the upper shell 1 is provided with a matching structure 3 for adjusting microwave performance. The matching structure 3 comprises a Y-shaped boss and a cylindrical boss, is integrally processed and formed with the upper shell 1 and is used for adjusting microwave parameters. The upper spin magnetic ferrite 4 is fixed on the cylindrical boss of the matching structure 3 using an adhesive acetal glue solution. The lower case 2 and the lower ferrite 5 were subjected to the same operation.
The lower shell 2 is arranged on the platform, the medium ring 6 is sleeved on the cylindrical boss of the matching structure 3 and the periphery of the lower gyromagnetic ferrite 5, the inner radius of the medium ring 6 is determined by the cylindrical matching structure and the ferrite radius, and is 0.03-0.05 mm larger than the cylindrical matching structure and the ferrite radius, so that the ferrite cannot be extruded. The media spring 7 is placed within the media ring 6, centered. Then the matching structure of the upper shell 2 and the ferrite which are bonded by the lower gyromagnetic ferrite 4 are installed into the medium ring 6, the upper shell 1 and the lower shell 2 are connected by screws, and the medium spring 7 is in pressing contact with the two gyromagnetic ferrites. The medium ring 6 is fixed on the Y-shaped boss by extrusion when one ends of the installation matching structures 3 of the upper shell 1 and the lower shell 2 are fixedly connected. The end face of the shell, the matching structure, the ferrite, the dielectric ring and the dielectric spring form a microwave channel of the circulator.
The ferrite on the other end surface of the upper shell 1 is concentrically provided with a cylindrical groove for installing a constant magnet 7. The magnetizing direction is up and down. The magnetic field distribution can be more uniform by using the uniform magnetic sheet, and the working temperature range of the circulator can be enlarged by using the temperature compensation sheet. The other end surface of the lower case 2 performs the same operation as the upper case 1. The permanent magnets in the upper and lower shells provide a stable and constant magnetic field for the ferrite.
The working process of the invention is as follows: under the constant magnetic field provided by the constant magnet, the microwave enters the circulator, and the end face of the shell, the matching structure, the ferrite, the dielectric ring and the dielectric spring form a well-matched microwave channel, so that microwave signals are transmitted in the circulator in a single direction according to a specific path. When high power is loaded, the quantity of secondary electrons is reduced due to the obstruction of the dielectric structure to the electron motion track, the micro-discharge threshold is improved, and the power capacity of the circulator is increased.
Example two:
as shown in fig. 3 and 4, the boss of the matching structure 3 is a triangular boss, and a tuning post is arranged on the boss for adjusting microwave performance. The medium ring 6 is sleeved on the periphery of the ferrite and is fixed on the triangular boss by extrusion when one end of the mounting matching structure 3 of the upper shell 1 and the lower shell 2 is fixedly connected.
Example three:
as shown in fig. 5, the upper case 1 and the lower case 2 are screwed and then the permanent magnet holder 9 is externally installed. The permanent magnet fixing piece 9 is of a U-shaped structure and is connected with the shell through screws. The permanent magnet fixing part 9 is made of electromagnetic pure iron materials, has good magnetic conductivity, forms a closed magnetic circuit with the permanent magnet 8, can reduce the magnetic leakage of the circulator and reduce the influence on surrounding devices.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (7)
1. The utility model provides a space navigation is with high reliable novel microwave circulator which characterized in that: comprises an upper shell (1), a lower shell (2), a matching structure (3), a gyromagnetic ferrite, a medium spring (7) and a permanent magnet (8); the upper shell (1) and the lower shell (2) are respectively provided with a permanent magnet groove with one end provided with a permanent magnet (8), and the surfaces of the other ends of the upper shell (1) and the lower shell (2) are fixedly provided with matching structures (3) for adjusting the microwave performance of the circulator; the surfaces of the matching structures (3) of the upper shell (1) and the lower shell (2) are fixedly connected with gyromagnetic ferrites; the medium spring (7) is positioned between the two gyromagnetic ferrites fixedly connected with the matching structures (3) of the upper shell (1) and the lower shell (2) and is in extrusion contact with the two gyromagnetic ferrites;
the matching structure (3) comprises a boss, and the gyromagnetic ferrite is fixedly arranged on the surface of the boss;
the gyromagnetic ferrite is characterized by further comprising a medium ring (6), wherein the medium ring (6) is sleeved on the outer circumference of the gyromagnetic ferrite, and the medium ring (6) is fixed on the boss through the extrusion effect generated when the upper shell (1) and the lower shell (2) are fixedly connected through the installation matching structure (3);
the medium spring (7) comprises a plurality of springs connected in parallel, and each spring is located between two gyromagnetic ferrites fixedly connected to the matching structure (3) of the upper shell (1) and the lower shell (2) and is in pressing contact with the gyromagnetic ferrites.
2. The high-reliability novel microwave circulator for aerospace as claimed in claim 1, wherein: the matching structure (3) of the upper shell (1) and the lower shell (2) is integrally formed with the upper shell (1) and the lower shell (2) respectively.
3. The high-reliability novel microwave circulator for aerospace as claimed in claim 1, wherein: the boss includes Y shape boss and cylindricality boss, the cylindricality boss is located Y shape boss, the gyromagnetic ferrite fixed mounting be in the cylindricality boss surface, and do not surpass the cylindricality boss is peripheral.
4. The high-reliability novel microwave circulator for aerospace as claimed in claim 3, wherein: the medium ring (6) is sleeved on the periphery of the cylindrical boss and fixed on the Y-shaped boss through the extrusion effect when one end of the mounting matching structure (3) of the upper shell (1) and the lower shell (2) is fixedly connected.
5. The high-reliability novel microwave circulator for aerospace as claimed in claim 1, wherein: the boss is a triangular boss, the medium ring (6) is sleeved on the periphery of the gyromagnetic ferrite and is fixed on the triangular boss through the extrusion effect when one end of the mounting matching structure (3) of the upper shell (1) and the lower shell (2) is fixedly connected.
6. The high-reliability novel microwave circulator for aerospace as claimed in claim 1, wherein: the side wall of the medium ring (6) is provided with an exhaust hole.
7. The high-reliability novel microwave circulator for aerospace as claimed in claim 1, wherein: the permanent magnet fixing piece is of a U-shaped structure, and two top ends of the permanent magnet fixing piece are fixedly connected with the surfaces of the upper shell (1) and the lower shell (2) on which the permanent magnets (8) are arranged respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811627980.2A CN109860968B (en) | 2018-12-28 | 2018-12-28 | Novel high-reliability microwave circulator for aerospace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811627980.2A CN109860968B (en) | 2018-12-28 | 2018-12-28 | Novel high-reliability microwave circulator for aerospace |
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| CN109860968A CN109860968A (en) | 2019-06-07 |
| CN109860968B true CN109860968B (en) | 2021-12-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713373B (en) * | 2019-10-25 | 2022-05-17 | 南京大学 | Low-temperature-resistant microwave ferrite circulator |
| CN116315546B (en) * | 2022-12-12 | 2024-05-14 | 西安空间无线电技术研究所 | Design method of surface microprotrusion high-power ferrite circulator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209756A (en) * | 1976-11-02 | 1980-06-24 | Nippon Electric Co., Ltd. | Circulator comprising a spring member between a ferrimagnetic piece and an adjacent conductor |
| CN103490130A (en) * | 2013-08-30 | 2014-01-01 | 南京信息职业技术学院 | Waveguide junction circulator and manufacturing method of matching block of waveguide junction circulator |
| CN205376716U (en) * | 2016-01-05 | 2016-07-06 | 成都泰格微波技术股份有限公司 | Circulator magnetic rotating piece positioner |
| CN208093706U (en) * | 2018-05-02 | 2018-11-13 | 南京广顺电子技术研究所 | A kind of broadband waveguide circulator |
-
2018
- 2018-12-28 CN CN201811627980.2A patent/CN109860968B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209756A (en) * | 1976-11-02 | 1980-06-24 | Nippon Electric Co., Ltd. | Circulator comprising a spring member between a ferrimagnetic piece and an adjacent conductor |
| CN103490130A (en) * | 2013-08-30 | 2014-01-01 | 南京信息职业技术学院 | Waveguide junction circulator and manufacturing method of matching block of waveguide junction circulator |
| CN205376716U (en) * | 2016-01-05 | 2016-07-06 | 成都泰格微波技术股份有限公司 | Circulator magnetic rotating piece positioner |
| CN208093706U (en) * | 2018-05-02 | 2018-11-13 | 南京广顺电子技术研究所 | A kind of broadband waveguide circulator |
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