Circulator

Abstract

The utility model belongs to the technical field of microwave devices, and particularly relates to a circulator, which comprises a capacitor plate, a ferrite and an inner conductor, the capacitor plate and the ferrite are arranged on two sides of the inner conductor, and the capacitor plate comprises a plurality of first trapezoidal plates. The plurality of first trapezoidal plates are connected to form a first hexagonal structure with a hexagonal hole, the ferrite is arranged in the hexagonal hole, and the circulator is good in heat dissipation performance, easy to process and manufacture and capable of meeting electromagnetic performance requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of microwave devices, and in particular relates to a circulator. Background Art

[0002] A circulator is a three-port device with unidirectional transmission characteristics. It controls the transmission of electromagnetic waves along a certain circular direction. When an external bias magnetic field is applied, it produces gyromagnetic characteristics, causing the electromagnetic waves propagating in the ferrite to undergo polarization rotation and absorb electromagnetic wave energy.

[0003] The circulator in the prior art generates a large amount of heat during operation, and the poor heat dissipation effect causes the device to be unable to operate normally for a long time, thereby affecting its performance. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a circulator which has good heat dissipation performance, is easy to manufacture and can meet the requirements of electromagnetic performance.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A circulator includes a capacitor plate, a ferrite, and an inner conductor. The capacitor plate and the ferrite are both arranged on both sides of the inner conductor. The capacitor plate includes multiple first trapezoidal plates, which are connected to form a first hexagonal structure with hexagonal holes. The ferrite is arranged in the hexagonal holes.

[0007] Furthermore, the ferrite includes a plurality of second trapezoidal plates, the plurality of second trapezoidal plates are connected to form a second hexagonal structure, and the size of the second hexagonal structure matches the size of the hexagonal hole.

[0008] Furthermore, the thickness of the capacitor plate is equal to the thickness of the ferrite.

[0009] Furthermore, the thickness is 0.5 mm to 2 mm.

[0010] Furthermore, the thickness is 0.5 mm, or 0.6 mm, or 0.8 mm, or 1 mm, or 1.2 mm, or 1.4 mm, or 1.5 mm, or 1.6 mm, or 1.8 mm, or 2 mm.

[0011] The utility model has the following advantages:

[0012] The capacitor plate of the utility model is assembled from a plurality of trapezoidal plates, which not only achieves a better heat dissipation effect, but also reduces the processing difficulty and meets the electromagnetic performance requirements of the circulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without inventive effort.

[0014] Figure 1 This is a schematic diagram of the assembly of the capacitor plate, ferrite and inner conductor of the utility model;

[0015] Figure 2 This is a schematic diagram of the assembly of the capacitor plate and ferrite of the utility model;

[0016] Figure 3 This is a structural diagram of a capacitor plate embodiment 1 of the present utility model;

[0017] Figure 4 Schematic diagram of the structure of the first trapezoidal plate embodiment 1;

[0018] Figure 5 This is a structural diagram of a capacitor plate embodiment 2 of the present utility model;

[0019] Figure 6 Schematic diagram of the structure of the first trapezoidal plate embodiment 2;

[0020] Figure 7 This is a schematic structural diagram of a ferrite embodiment 1 of the present utility model;

[0021] Figure 8 Schematic diagram of the structure of the second trapezoidal plate embodiment 1;

[0022] Figure 9 This is a schematic structural diagram of a ferrite embodiment 2 of the present utility model;

[0023] Figure 10 Schematic diagram of the structure of the second trapezoidal plate embodiment 2;

[0024] Figure 11 This is a thermal simulation diagram of the circulator of the utility model;

[0025] Figure 12 This is a simulation diagram of the isolation and insertion loss of the circulator of the utility model;

[0026] Figure 13 This is a standing wave simulation diagram of the circulator of the utility model;

[0027] Figure 14 This is a product measured data diagram of the circulator of the utility model;

[0028] In the figure: 1 - capacitor plate; 2 - ferrite; 3 - inner conductor; 4 - first trapezoidal plate; 5 - hexagonal hole; 6 - second trapezoidal plate. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] like Figures 1 to 4As shown, a circulator includes a capacitor plate 1, a ferrite 2 and an inner conductor 3. The capacitor plate 1 and the ferrite 2 are both arranged on both sides of the inner conductor 3. The capacitor plate 1 includes six first trapezoidal plates 4. The six first trapezoidal plates 4 are all isosceles trapezoidal structures. The six first trapezoidal plates 4 are sequentially connected end to end to form a first regular hexagonal planar structure with a regular hexagonal hole 5. The ferrite 2 is arranged in the regular hexagonal hole 5. Or as Figure 1 、 Figure 5 and Figure 6 As shown, a circulator includes a capacitor plate 1, a ferrite 2 and an inner conductor 3, wherein the capacitor plate 1 and the ferrite 2 are both arranged on both sides of the inner conductor 3, the capacitor plate 1 includes 12 first trapezoidal plates 4, and the 12 first trapezoidal plates 4 are all right-angled trapezoidal structures. The 12 first trapezoidal plates 4 are sequentially connected end to end to form a first regular hexagonal planar structure having a regular hexagonal hole 5, and the ferrite 2 is arranged in the regular hexagonal hole 5; it should be noted that Figure 1 and Figure 2 The seams connecting the first trapezoidal plates 4 are not shown, nor are the seams connecting the second trapezoidal plates 6. In some embodiments, the capacitor plate 1 can also be set to other numbers (such as 18 pieces, 24 pieces, etc.) of first trapezoidal plates 4. Due to space limitations, they are not described here. A large amount of heat is generated when the circulator is working. Poor heat dissipation will lead to a decrease in its electromagnetic performance. In order to obtain a good heat dissipation effect, the heat dissipation area of ​​the capacitor plate 1 can be increased. The capacitor plate 1 of the utility model adopts a ceramic sheet with a length of 100-150 mm, a width of 100-150 mm, and a thickness of 0.5-2 mm. It cannot be processed into an integral shape. The applicant has concluded through a large number of experiments and simulations that the capacitor plate 1 assembled with multiple first trapezoidal plates 4 can achieve a better heat dissipation effect (see Figure 11 ), which also reduces the difficulty of processing and meets the electromagnetic performance requirements of the circulator (see Figures 12 to 14 ).

[0034] Further, such as Figure 7 and Figure 8 As shown, the ferrite 2 includes 12 second trapezoidal plates 6, each of which is an isosceles trapezoidal structure. The 12 second trapezoidal plates 6 are connected to form a second regular hexagonal planar structure, and the size of the second regular hexagonal structure matches the size of the regular hexagonal hole 5. Or as Figure 9 and Figure 10As shown, the ferrite 2 includes 24 second trapezoidal plates 6, and the 24 second trapezoidal plates 6 are all right-angled trapezoidal structures. The 24 second trapezoidal plates 6 are connected to form a second regular hexagonal planar structure, and the size of the second regular hexagonal structure matches the size of the regular hexagonal hole 5. It should be noted that in some embodiments, the ferrite 2 can also be set to other numbers (such as 36 pieces, 48 ​​pieces, etc.) of second trapezoidal plates 6. Due to space limitations, they are not described here. The circulator will generate a lot of heat when working, and poor heat dissipation will lead to a decrease in its electromagnetic performance. In order to further obtain a good heat dissipation effect, the heat dissipation area of ​​the ferrite 2 can be increased. The ferrite 2 of the utility model adopts a ferrite sheet with a length of 80 to 120 mm, a width of 80 to 120 mm, and a thickness of 0.5 to 2 mm, which cannot be processed into an integral shape. The applicant has concluded through a large number of experiments and simulations that the ferrite 2 assembled with multiple second trapezoidal plates 6 can achieve a better heat dissipation effect (see Figure 11 ), which also reduces the difficulty of processing and meets the electromagnetic performance requirements of the circulator (see Figures 12 to 14 ).

[0035] Furthermore, in order to facilitate assembly and obtain better electromagnetic performance, multiple capacitor plates 1 and multiple ferrites 2 are provided on both sides of the inner conductor 3 , and the thickness of the capacitor plates 1 is equal to the thickness of the ferrites 2 .

[0036] Furthermore, the thickness is 0.5 mm to 2 mm.

[0037] Furthermore, the thickness is 0.5 mm, or 0.6 mm, or 0.8 mm, or 1 mm, or 1.2 mm, or 1.4 mm, or 1.5 mm, or 1.6 mm, or 1.8 mm, or 2 mm.

[0038] Thermal simulation shows that under the conditions of coolant flow rate of 1m / s and ambient temperature of 20℃, the maximum temperature of the circulator of the utility model is 51.59℃, and its temperature is mainly distributed in the range of 26℃~38℃, with good heat dissipation performance. Figure 11 Electromagnetic simulation proves that the isolation, insertion loss and standing wave indicators of the utility model circulator are good. Figure 12 and Figure 13 ; The actual product data is close to the simulation data, and the insertion loss, input and output standing wave and isolation of the circulator of this utility model are all good. Figure 14 .

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A circulator comprising a capacitor plate (1), a ferrite (2) and an inner conductor (3), characterized in that: The capacitor plate (1) and the ferrite (2) are both arranged on both sides of the inner conductor (3); the capacitor plate (1) comprises a plurality of first trapezoidal plates (4); the plurality of first trapezoidal plates (4) are connected to form a first hexagonal structure having a hexagonal hole (5); and the ferrite (2) is arranged in the hexagonal hole (5).

2. The circulator according to claim 1, wherein: The ferrite (2) comprises a plurality of second trapezoidal plates (6), wherein the plurality of second trapezoidal plates (6) are connected to form a second hexagonal structure, and the size of the second hexagonal structure matches the size of the hexagonal hole (5).

3. The circulator according to any one of claims 1 or 2, characterized in that: The thickness of the capacitor plate (1) is equal to the thickness of the ferrite (2).

4. The circulator according to claim 3, wherein: The thickness is 0.5 mm to 2 mm.

5. The circulator according to claim 4, characterized in that: The thickness is 0.5 mm, or 0.6 mm, or 0.8 mm, or 1 mm, or 1.2 mm, or 1.4 mm, or 1.5 mm, or 1.6 mm, or 1.8 mm, or 2 mm.

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