CN215184476U - Lumped parameter circulator - Google Patents
Lumped parameter circulator Download PDFInfo
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- CN215184476U CN215184476U CN202121091030.XU CN202121091030U CN215184476U CN 215184476 U CN215184476 U CN 215184476U CN 202121091030 U CN202121091030 U CN 202121091030U CN 215184476 U CN215184476 U CN 215184476U
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Abstract
The utility model discloses a lumped parameter circulator sets up a permanent magnet respectively through top and below at the central conductor, realizes two-sided magnetization, improves the magnetization effect to reduce insertion loss. And the base plate is additionally arranged, so that the effect of buffering external force can be achieved, and the impact of the external force on the rotating magnet is reduced. The utility model provides a circulator can realize that the electrical property index has voltage standing wave ratio to be less than or equal to 1.2, forward loss is less than or equal to 0.4dB, reverse loss is greater than or equal to 20dB when realizing clockwise or anticlockwise transmission of the signal of telecommunication, possesses the high reliability characteristics.
Description
Technical Field
The utility model belongs to the technical field of the circulator design with make, especially, relate to a lumped parameter 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, with the accelerated establishment of a 5G communication network, a great deal of lumped parameter circulators which can meet the requirements of modularization, miniaturization and economy of the 5G communication network construction are urgently needed; also, the center conductor portion is not specially designed, resulting in poor reliability thereof. Therefore, there is a need for a reliable lumped parameter circulator with low insertion loss and specially designed central conductor section 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: a highly reliable lumped parameter circulator is provided in a surface mount scenario with low insertion loss and a special design of the center conductor section.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a lumped parameter circulator comprises a gyromagnetic layer, a central conductor, a substrate, an upper permanent magnet and a lower 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; 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 central conductor adopts a double Y junction;
the double-Y-junction central conductor comprises two Y arms which are respectively a first Y arm and a second Y arm, ports are respectively arranged on three end parts of the first Y arm, the first port is T-shaped or Y-shaped, the second port is T-shaped or Y-shaped, the third port is T-shaped or Y-shaped, and the first port, the second port and the third port are connected to the middle part of the double-Y-junction central conductor through conducting strips; the middle part of the double-Y junction central conductor is also connected with a second Y arm, the second Y arm comprises three extending ends, and the extending ends and the conducting strips or the ports are arranged in a crossed and spaced mode; such a central conductor is commonly referred to as a "double Y junction", in which two Y's, three signal transmission ports form a Y-shape, commonly referred to as a large Y, i.e., a first Y-arm, and the other three sections extending oppositely from each large Y-branch also form a Y-shape, commonly referred to as a small Y, i.e., a second Y-arm;
the length and width of the lumped parameter circulator are set to be 8-14mm, and the height of the circulator is smaller than 5 mm;
the lumped parameter circulator includes, but is not limited to, a square shape.
The utility model discloses a lumped parameter circulator realizes two-sided magnetization through setting up a permanent magnet respectively in central conductor's top and below, improves the magnetization effect to reduce insertion loss. In addition, the base plate is additionally arranged, so that the effect of buffering external force can be achieved, and the impact of the external force on the rotary magnet is reduced.
According to a specific implementation mode, in the lumped parameter circulator of the utility model, the lower permanent magnet is arranged in the mounting hole opened on the upper surface of the substrate. The lower permanent magnet is arranged in the mounting hole of the substrate, so that not only can the optimized magnetic circuit be improved, but also the miniaturization of the lumped parameter circulator can be realized.
According to a specific embodiment, the lumped parameter circulator of the present invention further comprises a magnetic shield; wherein the magnetic shield is used for combining with the substrate so as to accommodate the upper permanent magnet and the lower permanent magnet in the magnetic shield. Through setting up the magnetic shield cover, can make the magnetic circuit of permanent magnet denser, reduce the interference of revealing the magnetic field to components and parts on every side simultaneously.
The utility model discloses further aim at: the probability of gyromagnetic fracture of the circulator under strong temperature impact is reduced.
In the lumped parameter circulator of the present invention, preferably, the substrate is a PCB or ceramic board. When the external PCB generates strong temperature impact on the lumped parameter circulator, the deformation quantity is small because the thermal expansion coefficient of the substrate 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 body fracture of the circulator is reduced.
According to a specific implementation mode, in the lumped parameter circulator of the utility model, the gyromagnetic layer is provided with a plurality of metallized via holes, connecting portion pass through metallized via hole and corresponding link electric connection.
According to a specific embodiment, in the lumped parameter circulator of the present invention, the 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.
According to a specific embodiment, the lumped parameter 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.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a lumped parameter circulator not only realizes two-sided magnetization through setting up a permanent magnet respectively in center conductor's top and below, improves the magnetization effect to reduce insertion loss. In addition, the base plate is additionally arranged, so that the effect of buffering external force can be achieved, and the impact of the external force on the rotary magnet is reduced. The thermal expansion coefficient of the base plate material is between that of an external circuit board and the gyromagnetic material, and if a PCB or a ceramic plate is adopted, the internal stress under strong temperature impact can be buffered, so that the probability of gyromagnetic body fracture of the circulator is reduced.
2. The utility model provides a circulator can realize that the electrical property index has voltage standing wave ratio to be less than or equal to 1.2, forward loss is less than or equal to 0.4dB, reverse loss is greater than or equal to 20dB when realizing clockwise or anticlockwise transmission of the signal of telecommunication, possesses the high reliability characteristics.
3. Compared with the traditional circulator, the utility model provides a circulator volume reduces 15.8% -36%, and the part reduces about 25%, and the process reduces about 25%, and production efficiency improves more than 2 times, and the energy consumption reduces about 10%, and the cost reduction is more than 50%.
4. The circulator in the utility model has smaller structure, lighter weight and can bear larger power. The circulator in the utility model has a frequency range of 3.4-3.6GHz, but is not limited to this frequency.
5. The utility model provides a circulator is convenient for the user and is installed, has improved the installation effectiveness.
6. The utility model discloses with the circulator also can solve the big, the weight of structure that the circulator exists, bear the problem that power is little to can further reduce the structure of circulator, weight reduction, cost reduction etc. on the basis of a miniaturized microstrip circulator originally, be a major breakthrough in the miniaturized development process of circulator structure.
Drawings
Fig. 1 is a schematic structural decomposition diagram of the lumped parameter circulator of the present invention.
Fig. 2 is a schematic diagram of the structure of the double Y-junction central conductor of the lumped parameter circulator of the present invention.
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, the lumped parameter 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 substrate 10, and an upper permanent magnet 40a and a lower permanent magnet 40b disposed above and below the central conductor 30, respectively.
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 arranged on the substrate 10, the lower surface of the gyromagnetic layer 20 and the upper surface of the substrate 10 are arranged in a face-to-face mode, the second grounding metal layer 22 of the gyromagnetic layer 20 is electrically connected with the first grounding metal layer 12 of the substrate 10, and the first connecting end 21a, the second connecting end 21b and the third connecting end 21c are respectively in one-to-one correspondence with and electrically connected with the first signal end 11a, the second signal end 11b and the third signal end 11 c;
as shown in fig. 2, the center conductor adopts a double Y junction;
the double-Y-junction central conductor 2 comprises two Y arms which are respectively a first Y arm and a second Y arm, ports are respectively arranged on three end parts of the first Y arm, the first port is T-shaped or Y-shaped, the second port is T-shaped or Y-shaped, the third port is T-shaped or Y-shaped, and the first port, the second port and the third port are connected to the middle part of the double-Y-junction central conductor through conducting strips; the middle part of the double-Y junction central conductor is also connected with a second Y arm, the second Y arm comprises three extending ends, and the extending ends and the conducting strips or the ports are arranged in a crossed and spaced mode; such a central conductor is commonly referred to as a "double Y junction", in which two Y's, three signal transmission ports form a Y-shape, commonly referred to as a large Y, i.e., a first Y-arm, and the other three sections extending oppositely from each large Y-branch also form a Y-shape, commonly referred to as a small Y, i.e., a second Y-arm;
the length and width of the lumped parameter circulator are set to be 8-14mm, and the height of the circulator is smaller than 5 mm;
the lumped parameter circulator includes, but is not limited to, a square shape.
Specifically, in the lumped parameter circulator of the present invention, the lower permanent magnet 40b is disposed in the mounting hole 13 formed in the upper surface of the substrate 10. Wherein, the thickness of lower permanent magnet 40b is adapted with the degree of depth of mounting hole 13, and this mounting hole 13 is the blind hole. The installation hole 13 is arranged at a position right opposite to the central conductor 30, and the centers of the upper permanent magnet 40a and the lower permanent magnet 40b are ensured to have better contact ratio during assembly, so that the optimized magnetic circuit is improved, meanwhile, the thickness of the circulator is prevented from being increased, and the miniaturization of the lumped parameter circulator is realized.
When implementing, the utility model discloses a connecting portion that the link of gyromagnetic layer 20 lower surface is electric connection with the central conductor 30's that its upper surface set up mode 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.
Furthermore, the first ground metal layer 12, the first signal terminal 11a, the second signal terminal 11b, the third signal terminal 11c and the corresponding soldering regions on the substrate 10 can be electrically connected through the metalized via holes on the substrate, or can be electrically connected through the metalized grooves or metal connecting wires on the side of the substrate 10.
The utility model discloses a lumped parameter circulator adopts printing technology earlier with the port when the preparation, with the ground metal layer on gyromagnetic layer and the base plate, 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 lumped parameter 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.
The utility model discloses a lumped parameter circulator can also set up medium piece 50 between central conductor 30 and last permanent magnet 40a, can adjust the clearance between central conductor and the last permanent magnet, optimizes the magnetic circuit. Further, in order to improve the temperature characteristic of the circulator, the lumped parameter circulator of the present invention may further include a temperature compensation plate disposed between the dielectric plate 50 and the upper permanent magnet 40a, 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.
In order to further improve the magnetization characteristic of the circulator, the lumped parameter circulator of the utility model also comprises a magnetic shield; wherein the magnetic shield is used in combination with the base plate to accommodate the upper and lower permanent magnets 40a and 40b therein. Through setting up the magnetic shield cover, can make the magnetic circuit of permanent magnet denser, reduce the interference of revealing the magnetic field to components and parts on every side simultaneously.
Those skilled in the art can use the lumped parameter circulator of the present invention in combination with corresponding components and circuit modules to form a product with specific applications, such as an isolator and a T/R module, which will not be described herein again.
Claims (8)
1. The lumped parameter circulator comprises a gyromagnetic layer, a central conductor which is arranged on the upper surface of the gyromagnetic layer and provided with a plurality of connecting parts, and is characterized by further comprising a substrate, an upper permanent magnet and a lower permanent magnet which are respectively arranged above and below the central conductor;
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; 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 central conductor adopts a double Y junction;
the double-Y-junction central conductor comprises two Y arms which are respectively a first Y arm and a second Y arm, ports are respectively arranged on three end parts of the first Y arm, the first port is T-shaped or Y-shaped, the second port is T-shaped or Y-shaped, the third port is T-shaped or Y-shaped, and the first port, the second port and the third port are connected to the middle part of the double-Y-junction central conductor through conducting strips; the middle part of the double-Y junction central conductor is also connected with a second Y arm, the second Y arm comprises three extending ends, and the extending ends and the conducting strips or the ports are arranged in a crossed and spaced mode; such a central conductor is commonly referred to as a "double Y junction", in which two Y's, three signal transmission ports form a Y-shape, commonly referred to as a large Y, i.e., a first Y-arm, and the other three sections extending oppositely from each large Y-branch also form a Y-shape, commonly referred to as a small Y, i.e., a second Y-arm;
the length and width of the lumped parameter circulator are set to be 8-14mm, and the height of the circulator is smaller than 5 mm;
the lumped parameter circulator includes, but is not limited to, a square shape.
2. The lumped parameter circulator of claim 1 wherein the lower permanent magnet is disposed in a mounting hole formed in an upper surface of the substrate.
3. The lumped parameter circulator of claim 2 further comprising a magnetic shield; wherein the magnetic shield is used for combining with the substrate so as to accommodate the upper permanent magnet and the lower permanent magnet in the magnetic shield.
4. The lumped parameter circulator of claim 1 wherein the substrate is a PCB board or a ceramic board.
5. The lumped parameter circulator of claim 1 wherein the gyromagnetic layer is provided with a plurality of metalized vias, the connecting portions being electrically connected to the corresponding connecting ends through the metalized vias.
6. The lumped parameter circulator of claim 1 wherein a side of the gyromagnetic 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.
7. The lumped parameter circulator of any one of claims 1 to 6 further comprising a dielectric slab; also, the dielectric sheet is disposed between the center conductor and the upper permanent magnet.
8. The lumped parameter circulator of claim 7 further comprising a temperature compensation plate; and, the temperature compensation plate is disposed between the dielectric plate and the upper permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121091030.XU CN215184476U (en) | 2021-05-20 | 2021-05-20 | Lumped parameter circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121091030.XU CN215184476U (en) | 2021-05-20 | 2021-05-20 | Lumped parameter circulator |
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| Publication Number | Publication Date |
|---|---|
| CN215184476U true CN215184476U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121091030.XU Active CN215184476U (en) | 2021-05-20 | 2021-05-20 | Lumped parameter circulator |
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| CN (1) | CN215184476U (en) |
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- 2021-05-20 CN CN202121091030.XU patent/CN215184476U/en active Active
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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. Address before: No. 818, wangcong East Road, Chengdu modern industrial port, Pidu District, Chengdu, Sichuan 610000 Patentee before: CHENGDU 899 SCIENCE AND TECHNOLOGY Co.,Ltd. |
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