CN221328087U - Miniaturized microstrip line surface-mounted circulator - Google Patents
Miniaturized microstrip line surface-mounted circulator Download PDFInfo
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- CN221328087U CN221328087U CN202322758422.2U CN202322758422U CN221328087U CN 221328087 U CN221328087 U CN 221328087U CN 202322758422 U CN202322758422 U CN 202322758422U CN 221328087 U CN221328087 U CN 221328087U
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Abstract
The utility model discloses a miniaturized microstrip line surface-mounted circulator, which comprises a grounding layer, a ferrite substrate, a microstrip circuit, an insulating sheet and a permanent magnet which are sequentially and fixedly connected in a superposition way, wherein the microstrip circuit comprises an annular junction region and a matching circuit arranged at the edge of the annular junction region; the annular junction region comprises a center microstrip circuit and three groups of edge microstrip circuits uniformly distributed on the edge of the center microstrip circuit, and the number of each group of edge microstrip circuits is multiple; the thickness of the ferrite substrate is 0.4-1.2mm. The multi-side microstrip circuits on the annular junction area of the miniaturized microstrip surface-mounted circulator can achieve the effect of multistage reactance adding, and is beneficial to expanding bandwidth and reducing size, so that the overall structure size of the miniaturized microstrip surface-mounted circulator is reduced, modular production is facilitated, and production cost is reduced.
Description
Technical Field
The utility model relates to the technical field of microwave devices, in particular to a miniaturized microstrip surface-mounted circulator.
Background
With the continuous development and evolution of communication technology, a 5G communication system needs a large-scale antenna array, which puts demands on miniaturization, modularization, high power, low cost and high performance on devices in the communication system. The microwave components can be widely applied to the fields of communication, radar, measurement and the like, the mobile communication network is wider in coverage and larger in capacity under the standardized promotion of the 6GHz frequency band of the modern society of high-speed development, and more users can be covered, the ferrite circulator is an important microwave component, and the design of the 6GHz ferrite circulator can be applied to the communication and Internet industries, so that the development and promotion of the society can be positively acted. Under the age background of a 6G network, the miniaturization, integration and modularization of a ferrite circulator are required to be higher, and the development of the miniaturized, modularized, low-cost and high-harmonic-suppression circulator with a 6GHz frequency band becomes particularly important.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: the miniaturized microstrip surface-mounted circulator is modularized, low in cost and high in harmonic suppression.
In order to solve the technical problems, the utility model adopts the following technical scheme: the miniaturized microstrip line surface-mounted circulator comprises a grounding layer, a ferrite substrate, a microstrip circuit, an insulating sheet and a permanent magnet which are sequentially and fixedly connected in a superimposed manner, wherein the microstrip circuit comprises an annular junction region and a matching circuit arranged at the edge of the annular junction region; the annular junction region comprises a center microstrip circuit and three groups of edge microstrip circuits uniformly distributed on the edge of the center microstrip circuit, and the number of each group of edge microstrip circuits is multiple; the thickness of the ferrite substrate is 0.4-1.2mm.
Further, the number of the side microstrip circuits in each group is five.
Further, the matching circuit comprises three matching networks, and the matching networks are formed by three sections of microstrip lines with characteristic impedance alternately changed.
Further, a via transmission line is arranged at one end of the matching network, which is far away from the annular junction region, and the via transmission line is printed on the edge of the ferrite substrate.
Further, a half-hole structure body is arranged on the outer side face of the ferrite substrate, and the through hole transmission line is printed on the half-hole structure body.
Further, the microstrip circuit is printed by a thin film or thick film process.
Further, the insulating sheet is adhered to the micro-charged circuit through high-temperature epoxy resin glue, and the permanent magnet is adhered to the insulating sheet through high-temperature epoxy resin glue.
Further, the insulating sheet is 99% of Al 2O3 material.
Further, the ferrite substrate is garnet ferrite.
Further, the permanent magnet is a samarium cobalt permanent magnet.
The utility model has the beneficial effects that: the multi-side microstrip circuits on the annular junction area of the miniaturized microstrip surface-mounted circulator can achieve the effect of multistage reactance adding, and is beneficial to expanding bandwidth and reducing size, so that the overall structure size of the miniaturized microstrip surface-mounted circulator is reduced, modular production is facilitated, and production cost is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a miniaturized microstrip surface-mounted circulator according to a first embodiment of the present utility model;
fig. 2 is an exploded view of a miniaturized microstrip surface-mounted circulator according to a first embodiment of the present utility model;
Fig. 3 is a top view of a ferrite substrate and a microstrip circuit in a miniaturized microstrip surface mount circulator according to a first embodiment of the present utility model;
Fig. 4 is a data chart of working waveforms of the miniaturized microstrip surface-mounted circulator in the frequency band of 5.92 GHz-7.13 GHz according to the first embodiment of the utility model.
Description of the reference numerals:
1. a ground layer;
2. A ferrite substrate; 21. a half-hole structure;
3. A microstrip circuit; 31. a ring junction region; 311. a central microstrip circuit; 312. an edge microstrip circuit; 32. a matching network; 321. an output transmission line; 322. an open line; 323. a port transmission line; 324. a via transmission line;
4. An insulating sheet;
5. Permanent magnets.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 4, a miniaturized microstrip surface-mounted circulator includes a ground layer 1, a ferrite substrate 2, a microstrip circuit 3, an insulating sheet 4 and a permanent magnet 5 which are sequentially stacked and fixedly connected, wherein the microstrip circuit 3 includes an annular junction region 31 and a matching circuit arranged at the edge of the annular junction region 31; the annular junction region 31 includes a central microstrip circuit 311 and three sets of edge microstrip circuits 312 uniformly distributed on the edge of the central microstrip circuit 311, wherein the number of each set of edge microstrip circuits 312 is multiple; the thickness of the ferrite substrate 2 is 0.4-1.2mm.
From the above description, the beneficial effects of the utility model are as follows: the multi-stage reactance adding effect of the multi-side microstrip circuits 312 on the annular junction area 31 of the miniaturized microstrip surface-mounted circulator is realized, the bandwidth is favorably expanded, and the size is reduced, so that the overall structure size of the miniaturized microstrip surface-mounted circulator is reduced, the modularized production is favorably realized, and the production cost is reduced.
Further, the number of the edge microstrip circuits 312 in each group is five.
Further, the matching circuit includes three matching networks 32, and the matching networks 32 are formed by three microstrip lines with alternately changed characteristic impedance.
As can be seen from the above description, the matching circuit has an impedance matching function, so that the miniaturized microstrip surface-mounted circulator not only has multiple functions of circulation, protection, filtering and the like, but also can greatly reduce the size of the system, improve the integration level of the system, improve the anti-interference performance of the complex electromagnetic environment and improve the transmission efficiency of the system.
Further, a via transmission line 324 is disposed at an end of the matching network 32 away from the annular junction region 31, and the via transmission line is printed on an edge of the ferrite substrate.
As can be seen from the above description, the via transmission line 324 enables the signal to be transmitted to the bottom of the ferrite substrate 2 through the microstrip circuit 3, which facilitates the post-chip bonding.
Further, a half-hole structure 21 is disposed on the outer side surface of the ferrite substrate 2, and the via transmission line 324 is printed on the half-hole structure 21.
Further, the microstrip circuit 3 is printed by a thin film or thick film process.
As is clear from the above description, the manufacturing process of the microstrip circuit 3 can be selected according to the actual use requirement or production condition.
Further, the insulating sheet 4 is adhered to the microstrip circuit 3 by high-temperature epoxy resin glue, and the permanent magnet 5 is adhered to the insulating sheet 4 by high-temperature epoxy resin glue.
As is apparent from the above description, the assembly of the insulating sheet 4, the microstrip circuit 3 and the permanent magnet 5 is simple and easy to produce.
Further, the insulating sheet 4 is 99% of Al 2O3 material.
Further, the ferrite substrate 2 is garnet ferrite.
Further, the permanent magnet 5 is a samarium cobalt permanent magnet 5.
Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: the miniaturized microstrip line surface-mounted circulator comprises a grounding layer 1, a ferrite substrate 2, a microstrip circuit 3, an insulating sheet 4 and a permanent magnet 5 which are sequentially and fixedly connected in a superimposed manner, wherein the microstrip circuit 3 comprises an annular junction area 31 and a matching circuit arranged at the edge of the annular junction area 31; the annular junction region 31 includes a central microstrip circuit 311 and three sets of edge microstrip circuits 312 uniformly distributed on the edge of the central microstrip circuit 311, where the number of each set of edge microstrip circuits 312 is plural. The ferrite substrate 2 is rectangular, and the thickness of the ferrite substrate 2 is 0.4-1.2mm, and in this embodiment, the thickness of the ferrite substrate 2 is 0.5mm. The ferrite substrate 2 has a length and width in the range of 5-12mm, and in this embodiment, the ferrite substrate 2 has a length and width of 7mm. The miniaturized microstrip surface-mounted circulator has smaller overall size, and ensures the miniaturization and modularization of the device. The side microstrip circuits 312 are elongated, and the plurality of side microstrip circuits 312 of each group are arranged in parallel and at intervals.
In this embodiment, the number of the edge microstrip circuits 312 in each group is five. In other embodiments, the number of edge microstrip circuits 312 may be set to one, two or more.
Preferably, the matching circuit includes three matching networks 32, one end of the matching network 32 close to the annular junction region 31 is a connection end, the other end is an output end, and the output end is used for interconnection with the outside. The connection ends of the matching networks 32 are connected to the central microstrip circuit 311, the angle between the connection ends of two adjacent matching networks 32 is 120 °, and the connection ends of the matching networks 32 are located between two sets of edge microstrip circuits 312. The matching network 32 is composed of three microstrip lines with alternating characteristic impedance, which are an output transmission line 321, an open line 322, and a port transmission line 323 in sequence. The output transmission line 321 is a high-impedance microstrip line, and the end of the output transmission line 321 far away from the opening line 322 is the connection end.
Preferably, a via transmission line 324 is disposed at an end of the matching network 32 away from the annular junction region 31, and the via transmission line 324 is printed on the edge of the ferrite substrate 2. Specifically, the via transmission line 324 is formed by bending and extending the matching network 32. The ground layer 1 is provided with a clearance gap corresponding to the via transmission line 324, so that the via transmission line 324 and the ground layer 1 are prevented from being conducted and shorted.
Preferably, a half-hole structure 21 matched with the via transmission line 324 is provided on the outer side surface of the ferrite substrate 2, and the via transmission line 324 is printed on the half-hole structure 21. Specifically, the number of half-hole structures 21 and the number of via transmission lines 324 are arranged in one-to-one correspondence. The cross section of the half-hole structure 21 is circular arc.
Optionally, the microstrip circuit 3 is printed by a thin film or thick film process.
Preferably, the insulating sheet 4 is adhered to the microstrip circuit 3 by high-temperature epoxy glue, and the permanent magnet 5 is adhered to the insulating sheet 4 by high-temperature epoxy glue.
Preferably, the insulating sheet 4 is 99% Al 2O3 material.
Preferably, the ferrite substrate 2 is garnet ferrite.
Preferably, the permanent magnet 5 is a samarium cobalt permanent magnet.
The structure and performance index of the miniaturized microstrip surface-mounted circulator are as follows:
The overall device dimensions were 7mm by 3.5mm. The saturation magnetization intensity (4pi Ms) =1400 Gs, the dielectric constant (epsilon r) =15, the ferromagnetic resonance line width (delta H) +.100deg.C, the Curie temperature (Tc) +.220deg.C, and the normalized magnetic moment P is 0.6.
The working frequency is 5.9 GHz-8.5 GHz; the bandwidth is more than or equal to 500MHz.
Under the condition that the dielectric constant of the ferrite substrate 2 is 15, simulating a conductor on a 6G frequency band, and matching with other structures and materials, wherein the obtained result is shown in a figure 4, S11 and S22 return loss is shown, and the isolation is more than or equal to 20dB; s12 insertion loss is less than or equal to 0.35dB.
In summary, the multiple side microstrip circuits on the annular junction region of the miniaturized microstrip surface-mounted circulator provided by the utility model can realize the effect of multistage reactance adding, and is beneficial to expanding bandwidth and reducing size, so that the overall structure size of the miniaturized microstrip surface-mounted circulator is reduced, the modularized production is facilitated, and the production cost is reduced. The automatic pasting and reflow soldering process can be adopted to replace gold wire bonding and manual assembly, so that the pasting efficiency is improved, and the cost is reduced. The miniaturized microstrip surface-mounted circulator has reliable performance and good process consistency, and has obvious advantages in high-frequency surface-mounted and laminated vertical interconnection application. Has remarkable significance for the whole machine integration of the 6G communication system, the weight reduction of the whole machine, and the improvement and stabilization of the comprehensive capability of the whole machine.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (10)
1. A miniaturized microstrip line surface-mounted circulator is characterized in that: the micro-strip circuit comprises an annular junction region and a matching circuit arranged at the edge of the annular junction region; the annular junction region comprises a center microstrip circuit and three groups of edge microstrip circuits uniformly distributed on the edge of the center microstrip circuit, and the number of each group of edge microstrip circuits is multiple; the thickness of the ferrite substrate is 0.4-1.2mm.
2. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the number of the side microstrip circuits in each group is five.
3. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the matching circuit comprises three matching networks, and the matching networks are composed of three sections of microstrip lines with characteristic impedance alternately changed.
4. A miniaturized microstrip-line surface-mount circulator as claimed in claim 3, wherein: and one end of the matching network, which is far away from the annular junction region, is provided with a via transmission line, and the via transmission line is printed on the edge of the ferrite substrate.
5. The miniaturized microstrip-line surface-mount circulator of claim 4, wherein: and a half-hole structure body is arranged on the outer side surface of the ferrite substrate, and the through hole transmission line is printed on the half-hole structure body.
6. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the microstrip circuit is printed by a thin film or thick film process.
7. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the insulating sheet is adhered to the micro-charged circuit through high-temperature epoxy resin glue, and the permanent magnet is adhered to the insulating sheet through high-temperature epoxy resin glue.
8. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the insulating sheet is 99% Al2O3 material.
9. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the ferrite substrate is garnet ferrite.
10. The miniaturized microstrip-line surface-mount circulator of claim 1, wherein: the permanent magnet is a samarium cobalt permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758422.2U CN221328087U (en) | 2023-10-13 | 2023-10-13 | Miniaturized microstrip line surface-mounted circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758422.2U CN221328087U (en) | 2023-10-13 | 2023-10-13 | Miniaturized microstrip line surface-mounted circulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221328087U true CN221328087U (en) | 2024-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322758422.2U Active CN221328087U (en) | 2023-10-13 | 2023-10-13 | Miniaturized microstrip line surface-mounted circulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221328087U (en) |
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2023
- 2023-10-13 CN CN202322758422.2U patent/CN221328087U/en active Active
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