CN210379372U - Microstrip circulator, isolator and T/R assembly - Google Patents
Microstrip circulator, isolator and T/R assembly Download PDFInfo
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- CN210379372U CN210379372U CN201921892746.2U CN201921892746U CN210379372U CN 210379372 U CN210379372 U CN 210379372U CN 201921892746 U CN201921892746 U CN 201921892746U CN 210379372 U CN210379372 U CN 210379372U
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Abstract
The utility model discloses a micro-strip circulator which can be applied to isolators and microwave communication, especially has huge use amount in a T/R component, the micro-strip circulator is provided with a first grounding metal layer and a plurality of signal ends by adding a base plate, the upper surface of the base plate is provided with a plurality of welding areas which are respectively corresponding to the first grounding metal layer and each signal end and are electrically connected; moreover, a plurality of connecting parts of the central conductor of the microstrip circulator are respectively in one-to-one correspondence with a plurality of connecting ends arranged on the lower surface of the gyromagnetic layer and are electrically connected; the gyromagnetic layer is arranged on the substrate, the lower surface of the gyromagnetic layer and the upper surface of the substrate are arranged face to face, meanwhile, the first grounding metal layer is electrically connected with the second grounding metal layer, and the connecting ends are in one-to-one correspondence with the signal ends and are electrically connected. Therefore, the utility model discloses not only can realize through the base plate with external circuit's surface mounting, can also reduce the impact of external force to the gyromagnetic body through this base plate.
Description
Technical Field
The utility model belongs to the technical field of circulator design and manufacturing, especially, relate to a microstrip circulator to and isolator and the T/R subassembly of using this kind of microstrip circulator.
Background
The circulator is a non-reversible device with a plurality of ends, comprises a gyromagnetic body made of gyromagnetic materials, and the gyromagnetic materials generate gyromagnetic characteristics under the combined action of an external microwave magnetic field and a constant direct-current magnetic field, so that electromagnetic waves propagating in the gyromagnetic body are polarized and rotated, and the unidirectional transmission of high-frequency signal energy is realized, and the circulator is widely applied to the field of microwave communication. With the development of communication technology, the requirements for the circulator are higher and higher, for example, the circulator is required to be small in size and simple in process, and meanwhile, the circulator can meet the requirement for high integration.
At present, when the traditional circulator is applied, a manual welding or gold wire bonding mode is usually adopted to electrically connect the pins with the circuit on the PCB, so that the efficiency is low, and the requirement of high integration cannot be met. Although the prior circulator has been designed by Surface Mount Technology (SMT), in practice, when the circulator is subjected to strong external force and strong temperature impact, such as assembly, reflow soldering, and high-frequency energy transmission heating, the gyromagnetic body in the circulator is likely to crack if the gyromagnetic body is stressed unevenly or has a large difference in expansion coefficient from the PCB.
Therefore, there is a need to provide a microstrip circulator with a lower failure rate in a surface mount scenario.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, the object of the present invention is to: the micro-strip circulator with a low failure rate in a surface mounting scene is provided, and the impact of external force on a gyromagnetic body is reduced by improving the structure of the existing surface-mounted circulator.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a microstrip circulator comprises a gyromagnetic layer, a central conductor and a permanent magnet, wherein the central conductor is arranged on the upper surface of the gyromagnetic layer and is provided with a plurality of connecting parts;
the upper surface of the substrate is provided with a first grounding metal layer and a plurality of signal ends which are insulated and isolated from the first grounding metal layer, and the lower surface of the substrate is provided with a plurality of welding areas which are respectively and electrically connected with the first grounding metal layer and the signal ends correspondingly;
the lower surface of the magnetic rotating layer is provided with a second grounding metal layer and a plurality of connecting ends which correspond to the connecting parts one by one; the first grounding metal layer is insulated and isolated from the connecting end, and the corresponding connecting part is electrically connected with the connecting end;
the rotating magnetic layer is arranged on the substrate, and the lower surface of the rotating magnetic layer and the upper surface of the substrate are arranged in a face-to-face mode; and the first grounding metal layer is electrically connected with the second grounding metal layer, and the connecting ends are in one-to-one correspondence with the signal ends and are electrically connected with the signal ends.
The utility model discloses a microstrip circulator can play the effect of buffering external force through increasing a base plate, reduces the impact of external force to the gyromagnetic body.
The utility model discloses further aim at: the probability of gyromagnetic fracture of the circulator under strong temperature impact is reduced.
In the microstrip circulator of the present invention, preferably, the substrate is a PCB board or a ceramic board. When the external PCB generates strong temperature impact on the microstrip circulator, the deformation quantity is small because the thermal expansion coefficient of the base plate material is between the external circuit board and the gyromagnetic material, so that the internal stress under the strong temperature impact can be buffered, and the probability of gyromagnetic fracture of the circulator is reduced.
According to a specific implementation mode, in the microstrip circulator of the utility model, the magnetism rotating layer is provided with a plurality of metallization via holes, connecting portion pass through metallization via hole and corresponding link electric connection.
According to a specific embodiment, in the microstrip circulator of the present invention, the side of the magnetic layer is provided with a plurality of metallized grooves or metal connecting lines; each connecting part extends to the edge of the upper surface of the gyromagnetic layer and is electrically connected with the corresponding connecting end through the metallization groove or the metal connecting wire.
According to a specific embodiment, the microstrip circulator of the present invention further comprises a magnetic homogenizing sheet; and the even magnetic sheet is arranged in a mounting hole formed on the upper surface of the substrate. The uniform magnetic sheet is arranged in the mounting hole of the substrate, which not only can improve the optimized magnetic circuit, but also can realize the miniaturization of the microstrip circulator.
According to a specific embodiment, the microstrip circulator of the present invention further comprises a dielectric sheet and a temperature compensation sheet; the medium sheet is arranged between the central conductor and the permanent magnet, and the temperature compensation sheet is arranged between the medium sheet and the permanent magnet. A medium sheet is arranged between the central conductor and the permanent magnet, so that the gap between the central conductor and the permanent magnet can be adjusted, and a magnetic circuit is optimized; and a temperature compensation sheet is arranged between the central conductor and the permanent magnet, so that the temperature characteristic of the circulator is improved.
According to a specific implementation mode, in the microstrip circulator of the present invention, the permanent magnet is provided with a magnetic shield. The magnetic shielding cover is arranged on the permanent magnet, so that the magnetic circuit of the permanent magnet is denser, and the interference of a leakage magnetic field to surrounding components is reduced.
The utility model also provides an isolator, it includes the utility model discloses a microstrip circulator, and the load of connecting is served to one or more signals of microstrip circulator.
The utility model also provides a T/R subassembly, it includes the utility model discloses a microstrip circulator, and the transceiver circuit who connects is served to one or more signal of microstrip circulator.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the micro-strip circulator of the utility model is provided with a substrate, the upper surface of the substrate is provided with a first grounding metal layer and a plurality of signal ends, and the lower surface of the substrate is provided with a plurality of welding areas which are respectively corresponding to the first grounding metal layer and each signal end and are electrically connected; moreover, a plurality of connecting parts of the central conductor of the microstrip circulator are respectively in one-to-one correspondence with a plurality of connecting ends arranged on the lower surface of the gyromagnetic layer and are electrically connected; the gyromagnetic layer is arranged on the substrate, the lower surface of the gyromagnetic layer and the upper surface of the substrate are arranged face to face, meanwhile, the first grounding metal layer is electrically connected with the second grounding metal layer, and the connecting ends are in one-to-one correspondence with the signal ends and are electrically connected. Therefore, the utility model discloses not only can realize through the base plate with external circuit's surface mounting, can also reduce the impact of external force to the gyromagnetic body through this base plate.
2. The utility model discloses an among the microstrip circulator, the coefficient of thermal expansion of base plate material is between outside circuit board and gyromagnetic material, if adopt PCB board or ceramic plate, can cushion the internal stress under the strong temperature impact to reduce the circulator and appear the cracked probability of gyromagnetic.
3. The utility model discloses an among the microstrip circulator, still be provided with even magnetic sheet on the base plate, moreover, install even magnetic sheet in the mounting hole of base plate, can not only improve the optimization magnetic circuit, can also realize the miniaturization of microstrip circulator. Simultaneously, through the simulation experiment, the utility model discloses a this electrical property index of insertion loss of microstrip circulator promotes to some extent.
Drawings
Fig. 1 is an exploded view of the microstrip circulator of the present invention;
FIG. 2 is a schematic structural view of the lower surface of the gyromagnetic layer of the microstrip circulator of the present invention;
FIG. 3 is a schematic structural diagram of the microstrip circulator of the present invention with a dielectric sheet;
FIG. 4 is a schematic structural view of the microstrip circulator of the present invention with the additional magnetic homogenizing sheet;
fig. 5 is a schematic view of the microstrip circulator of the present invention with an additional magnetic shielding case.
List of reference numerals
10-substrate, 11 a-first signal terminal, 11 b-second signal terminal, 11 c-third signal terminal, 12-first grounding metal layer, mounting hole 13, 20-gyromagnetic layer, 21 a-first connecting terminal, 21 b-second connecting terminal, 21 c-third connecting terminal, 22-second grounding metal layer, 30-central conductor, 30 a-first connecting part, 30 b-second connecting part, 30 c-third connecting part, 40-permanent magnet, 50-medium sheet, 60-uniform magnetic sheet and 70-magnetic shield.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
As shown in fig. 1 and 2, the microstrip circulator of the present invention includes a gyromagnetic layer 20, a central conductor 30 disposed on an upper surface of the gyromagnetic layer 20, and a permanent magnet 40 disposed above the central conductor 30. Meanwhile, a substrate 10 is also included.
The upper surface of the substrate 10 is provided with a first ground metal layer 12, a first signal terminal 11a, a second signal terminal 11b and a third signal terminal 11c, and the lower surface of the substrate 10 is provided with soldering regions corresponding to the first ground metal layer 12, the first signal terminal 11a, the second signal terminal 11b and the third signal terminal 11c, respectively. The first ground metal layer 12 is insulated and isolated from the first signal terminal 11a, the second signal terminal 11b and the third signal terminal 11c, and the first ground metal layer 12, the first signal terminal 11a, the second signal terminal 11b and the third signal terminal 11c are electrically connected to the corresponding soldering regions.
The central conductor 30 disposed on the upper surface of the gyromagnetic layer 20 includes a first connection portion 30a, a second connection portion 30b, and a third connection portion 30c, and the lower surface of the gyromagnetic layer 20 includes a second ground metal layer 22 and a first connection end 21a, a second connection end 21b, and a third connection end 21c corresponding to the first connection portion 30a, the second connection portion 30b, and the third connection portion 30 c. The second ground metal layer 22 is insulated and isolated from the first connection end 21a, the second connection end 21b and the third connection end 21c, the corresponding first connection end 21a is electrically connected with the first connection portion 30a, the second connection end 21b is electrically connected with the second connection portion 30b, and the third connection end 21c is electrically connected with the third connection portion 30 c.
The gyromagnetic layer 20 is disposed on the substrate 10, the lower surface of the gyromagnetic layer 20 and the upper surface of the substrate 10 are disposed in a face-to-face manner, the second ground metal layer 22 of the gyromagnetic layer 20 is electrically connected to the first ground metal layer 12 of the substrate 10, and the first connection end 21a, the second connection end 21b and the third connection end 21c are respectively in one-to-one correspondence with and electrically connected to the first signal end 11a, the second signal end 11b and the third signal end 11 c.
Specifically, the utility model discloses in, the mode that the link of gyromagnetic layer 20 lower surface is electric connection with the connecting portion of the central conductor 30 that its upper surface set up can adopt: the gyromagnetic layer 20 is provided with a corresponding number of metalized through holes, and the connecting parts are electrically connected with the corresponding connecting ends on the lower surface of the gyromagnetic layer 20 through the metalized through holes. Or, a plurality of metallized grooves or metal connecting lines are arranged on the side of the gyromagnetic layer 20; moreover, each connection portion extends to the edge of the upper surface of the gyromagnetic layer 20 and is electrically connected with the corresponding connection end of the lower surface of the gyromagnetic layer 20 through a metalized groove or a metal connection line.
The utility model discloses in, the first ground metal layer 12, the first signal end 11a that set up on the base plate 10, second signal end 11b and third signal end 11c can realize electric connection through the metallization via hole that sets up on the base plate rather than the welding region that corresponds, also can realize electric connection through the metallization recess or the metal connecting wire that set up at base plate 10 side.
The utility model discloses a microstrip circulator adopts printing technology earlier with the port in the ground metal layer on gyromagnetic layer and the base plate when the preparation, prints into corresponding pattern with silver thick liquid, carries out the silver thick liquid sintering again. The combination mode of the gyromagnetic layer and the substrate is that a layer of soldering paste is brushed on the surface of the gyromagnetic layer, then the gyromagnetic layer and the substrate are aligned, and then the gyromagnetic layer and the substrate are placed into a high-temperature sintering furnace or a reflow soldering machine for sintering.
Meanwhile, as will be known to those skilled in the art, the number of ports of the circulator depends on the shape design of the central conductor, i.e., the central conductor has a plurality of connecting portions, generally speaking, the number of ports of the circulator is three or more, and the specific number of ports depends on the actual product requirements.
In order to reduce the chance of gyromagnetic cracking of the circulator under strong temperature shock. In the microstrip circulator of the present invention, the substrate 10 is a PCB or ceramic board. Because the thermal expansion coefficient of the base plate material is between the external circuit board and the gyromagnetic material, the internal stress under strong temperature impact can be buffered, and the probability of gyromagnetic body fracture of the circulator is reduced.
As shown in fig. 3, the microstrip circulator of the present invention may further include a dielectric sheet 50 disposed between the central conductor 30 and the permanent magnet 40, so as to adjust the gap between the central conductor and the permanent magnet and optimize the magnetic circuit. Further, in order to improve the temperature characteristic of the circulator, the microstrip circulator of the present invention may further include a temperature compensation plate disposed between the dielectric plate 50 and the permanent magnet 40, so as to improve the temperature characteristic of the circulator. The utility model discloses in, medium piece and temperature compensation piece adopt the mode of bonding to realize fixedly.
As shown in fig. 4, the microstrip circulator of the present invention further includes a magnetic homogenizing sheet 60. Specifically, the base plate 10 is provided with a mounting hole 13 for mounting the uniform magnetic sheet 60, the uniform magnetic sheet 60 is arranged in the mounting hole 13, the thickness of the uniform magnetic sheet 60 is matched with the depth of the mounting hole 13, and the mounting hole 13 is a blind hole. The installation hole 13 is arranged right opposite to the central conductor 30, and when the micro-strip circulator is assembled, the center of the medium sheet 50, the center of the permanent magnet 40 and the center of the uniform magnetic sheet 60 are ensured to have better contact ratio, so that the optimized magnetic circuit is improved, meanwhile, the increase of the thickness of the circulator is avoided, and the miniaturization of the micro-strip circulator is realized.
In this embodiment, corresponding plated through holes are respectively disposed at the positions of the first ground metal layer 12, the first signal terminal 11a, the second signal terminal 11b and the third signal terminal 11c on the substrate 10, and the first ground metal layer 12, the first signal terminal 11a, the second signal terminal 11b and the third signal terminal 11c are electrically connected to their corresponding soldering regions through the corresponding plated through holes, where the plated through holes disposed at the position of the first ground metal layer 12 are not shown in fig. 4. In addition, the material of the even magnetic sheet in the utility model can adopt iron or other strong magnetic materials. Furthermore, the even magnetic sheet is fixed in the mounting hole of the substrate in an adhesion mode.
Through simulation experiment to test with frequency range, insertion loss, reverse isolation and voltage standing wave ratio the utility model discloses a performance.
| Increase even magnetic sheet | Non-increasing uniform magnetic sheet | |
| Frequency of | 3.3～3.9GHz | 3.35～3.7GHz |
| Insertion loss | 0.27dB | 0.36dB |
| Reverse isolation | 24.1dB | 22.5dB |
| Voltage standing wave ratio | 1.15 | 1.18 |
Further, in order to further improve the magnetization characteristic of the circulator, as shown in fig. 5, a magnetic shield 70 is provided on the permanent magnet 40. Therefore, the magnetic circuit diffusion of the permanent magnet is avoided, the magnetic circuit of the permanent magnet is more densely concentrated in the circulator, and meanwhile, the interference of a leakage magnetic field to surrounding components is reduced.
Furthermore, the utility model also provides an isolator, it includes the utility model discloses a microstrip circulator to and electric connection's load is served to one or more signals of microstrip circulator. And simultaneously, the utility model also provides a T/R subassembly, it includes the utility model discloses a microstrip circulator to and hold electric connection's transceiver circuit with one or more signal of microstrip circulator.
Those skilled in the art can use the microstrip circulator of the present invention in combination with corresponding components and circuit modules to form products for specific applications, such as isolators and T/R assemblies, which are not described herein again.
Claims (10)
1. A microstrip circulator comprises a gyromagnetic layer, a central conductor and a permanent magnet, wherein the central conductor is arranged on the upper surface of the gyromagnetic layer and provided with a plurality of connecting parts;
the upper surface of the substrate is provided with a first grounding metal layer and a plurality of signal ends which are insulated and isolated from the first grounding metal layer, and the lower surface of the substrate is provided with a plurality of welding areas which are respectively and electrically connected with the first grounding metal layer and the signal ends correspondingly;
the lower surface of the magnetic rotating layer is provided with a second grounding metal layer and a plurality of connecting ends which correspond to the connecting parts one by one; the first grounding metal layer is insulated and isolated from the connecting end, and the corresponding connecting part is electrically connected with the connecting end;
the rotating magnetic layer is arranged on the substrate, and the lower surface of the rotating magnetic layer and the upper surface of the substrate are arranged in a face-to-face mode; and the first grounding metal layer is electrically connected with the second grounding metal layer, and the connecting ends are in one-to-one correspondence with the signal ends and are electrically connected with the signal ends.
2. The microstrip circulator of claim 1 wherein the substrate is a PCB or ceramic board.
3. The microstrip circulator of claim 1 wherein the gyromagnetic layer is provided with a plurality of metallized vias, the connecting portions being electrically connected to the corresponding connecting ends through the metallized vias.
4. The microstrip circulator of claim 1 wherein a side of the gyromagnetic layer is provided with a plurality of metalized grooves or metal connecting lines; each connecting part extends to the edge of the upper surface of the gyromagnetic layer and is electrically connected with the corresponding connecting end through the metallization groove or the metal connecting wire.
5. The microstrip circulator of any one of claims 1 to 4 further comprising a flux leveler; and the even magnetic sheet is arranged in a mounting hole formed on the upper surface of the substrate.
6. The microstrip circulator of claim 5 further comprising a dielectric slab; also, the dielectric sheet is disposed between the center conductor and the permanent magnet.
7. The microstrip circulator of claim 6 further comprising a temperature compensation plate; also, the temperature compensation sheet is disposed between the dielectric sheet and the permanent magnet.
8. The microstrip circulator of claim 5 wherein a magnetic shield is disposed on the permanent magnet.
9. An isolator comprising a microstrip circulator as claimed in any one of claims 1 to 8 and a load connected to one or more signal terminals of the microstrip circulator.
10. A T/R module, characterized in that it comprises a microstrip circulator as claimed in any one of claims 1 to 8, and a transceiver circuit connected to one or more signal terminals of said microstrip circulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921892746.2U CN210379372U (en) | 2019-11-05 | 2019-11-05 | Microstrip circulator, isolator and T/R assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921892746.2U CN210379372U (en) | 2019-11-05 | 2019-11-05 | Microstrip circulator, isolator and T/R assembly |
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| CN210379372U true CN210379372U (en) | 2020-04-21 |
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| CN201921892746.2U Active CN210379372U (en) | 2019-11-05 | 2019-11-05 | Microstrip circulator, isolator and T/R assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676548A (en) * | 2019-11-05 | 2020-01-10 | 成都八九九科技有限公司 | Microstrip circulator, isolator and T/R assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676548A (en) * | 2019-11-05 | 2020-01-10 | 成都八九九科技有限公司 | Microstrip circulator, isolator and T/R assembly |
| CN110676548B (en) * | 2019-11-05 | 2021-06-25 | 成都八九九科技有限公司 | Microstrip circulator, isolator and T/R assembly |
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Address after: Pixian 610000 Sichuan city of Chengdu province Chengdu modern industrial port area Patentee after: Chengdu 899 Technology Co.,Ltd. Patentee after: HUAWEI TECHNOLOGIES Co.,Ltd. Address before: Pixian 610000 Sichuan city of Chengdu province Chengdu modern industrial port area Patentee before: CHENGDU 899 SCIENCE AND TECHNOLOGY Co.,Ltd. Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: No. 818, wangcong East Road, Chengdu modern industrial port, Pidu District, Chengdu, Sichuan 610000 Patentee after: Chengdu 899 Technology Co.,Ltd. Patentee after: HUAWEI TECHNOLOGIES Co.,Ltd. Address before: Pixian 610000 Sichuan city of Chengdu province Chengdu modern industrial port area Patentee before: Chengdu 899 Technology Co.,Ltd. Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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