High power capacity circulator

Abstract

The invention discloses a circulator with high power capacity, which comprises a dielectric substrate, a metal bottom plate arranged at the bottom of the dielectric substrate and a ferrite cylinder embedded in the center of the dielectric substrate, and is characterized in that the upper end of the dielectric substrate is also provided with a metal conductor, and the metal conductor comprises a central metal disc arranged at the upper end of the ferrite cylinder; the plurality of medium heat dissipation modules are all embedded in the medium substrate; the number of the transmission branches is three, and the three transmission branches and the central metal disc form a Y-shaped branch; and the number of the heat dissipation branches is three, the three heat dissipation branches and the central metal disc form a Y-shaped branch, and the heat dissipation branches are not overlapped with the transmission branches. Compared with a traditional circulator, the circulator has the technical advantages that the heat dissipation performance is improved, the machining precision requirement is low, debugging is easy, and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of circulators, and in particular to a circulator with high power capacity. Background Art

[0002] Ferrite circulator is a special type of magnetic device with a ring structure and made of ferrite material. It is commonly used in microwave and RF devices, such as microwave filters, couplers, isolators, etc., to regulate and control electromagnetic wave signals. The key performance evaluation indicators of circulators mainly include parameters such as insertion loss, saturation magnetization, operating frequency, reflection coefficient and operating temperature.

[0003] With the trend of miniaturization and high integration of electronic devices, the size and weight of ferrite circulators are constantly decreasing, which leads to the continuous increase in the device power density of ferrite circulators. Therefore, the circulator needs to have a higher power capacity, and the heat dissipation performance of the circulator becomes particularly critical. Summary of the invention

[0004] The object of the present invention is to overcome the deficiencies of the prior art and provide a circulator with high power capacity.

[0005] The present invention is achieved through the following technical solutions:

[0006] A high power capacity circulator comprises a dielectric substrate, a metal bottom plate arranged at the bottom of the dielectric substrate and a ferrite cylinder embedded in the center of the dielectric substrate. A metal conductor is also arranged at the upper end of the dielectric substrate. The metal conductor comprises:

[0007] a central metal disc disposed at the upper end of the ferrite cylinder;

[0008] Dielectric heat dissipation modules, multiple dielectric heat dissipation modules are embedded in the dielectric substrate;

[0009] Transmission branches, there are three transmission branches, and the three transmission branches and the central metal disk form a Y-shaped branch;

[0010] Heat dissipation branches, there are three heat dissipation branches, the three heat dissipation branches and the central metal disk form a Y-shaped branch, and the heat dissipation branches do not overlap with the transmission branches.

[0011] The present invention is further configured as follows: the angle between the three transmission branches is 120°; the angle between the three heat dissipation branches is also 120°.

[0012] The present invention is further configured to include an input port, an output port and an isolation port.

[0013] The present invention is further configured as follows: the three transmission branches each include a quarter-wavelength microstrip line, and also respectively include an input microstrip line, an output microstrip line and an isolation microstrip line in sequence.

[0014] The present invention is further configured as follows: the input port is connected to the input microstrip line, and the input microstrip line is connected to the central metal disk through the input quarter-wavelength microstrip line; the output port is connected to the output microstrip line, and the output microstrip line is connected to the central metal disk through the output quarter-wavelength microstrip line; the isolation port is connected to the isolation microstrip line, and the isolation microstrip line is connected to the central metal disk through the isolation quarter-wavelength microstrip line.

[0015] The present invention is further configured as follows: the three heat dissipation branches each include a heat dissipation transmission line and a heat dissipation column.

[0016] The present invention is further configured as follows: one end of the heat dissipation column is connected to the heat dissipation transmission line, and the other end is grounded.

[0017] The present invention discloses a circulator with high power capacity. Compared with the prior art:

[0018] The dielectric heat dissipation module and the heat dissipation branches can reduce the operating temperature of the circulator and improve the power capacity of the circulator. Compared with the traditional circulator, the present invention adopts the above technical solution, which improves the heat dissipation performance, has low processing precision requirements, is easy to debug, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the planar structure of the high power capacity circulator of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the high power capacity circulator of the present invention.

[0021] Figure 3 Schematic diagram of the heat dissipation branch structure of the high power capacity circulator of the present invention Figure 1 .

[0022] Figure 4 Schematic diagram of the heat dissipation branch structure of the high power capacity circulator of the present invention Figure 2 .

[0023] The numbers and letters in the figure represent the corresponding component names:

[0024] Among them: 1. Input port; 2. Output port; 3. Isolation port; 4. Input microstrip line; 5. Output microstrip line; 6. Isolation microstrip line; 7. Input quarter-wavelength microstrip line; 8. Output quarter-wavelength microstrip line; 9. Isolation quarter-wavelength microstrip line; 10. Central metal disk; 11. Heat dissipation transmission line; 12. Heat dissipation column; 13. Dielectric substrate; 14. Ferrite cylinder; 15. Dielectric heat dissipation module. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] See also Figures 1 to 4As shown, the present invention discloses a high-power capacity circulator, comprising an input port 1, an output port 2, an isolation port 3, an input microstrip line 4, an output microstrip line 5, an isolation microstrip line 6, an input quarter-wavelength microstrip line 7, an output quarter-wavelength microstrip line 8, an isolation quarter-wavelength microstrip line 9, a central metal disk 10, a heat dissipation transmission line 11, a heat dissipation column 12, a dielectric substrate 13, a ferrite column 14, and a dielectric heat dissipation module 15; the input port 1 is connected to the input microstrip line 4, the input microstrip line 4 is connected to the input quarter-wavelength microstrip line 7, and the input quarter-wavelength microstrip line 7 is connected to the central metal disk 10; the output port 2 is connected to the output microstrip line 5, the output microstrip line 5 is connected to the output quarter-wavelength microstrip line 8, and the output quarter-wavelength microstrip line 8 is connected to the central metal disk 10; the isolation port 3 is connected to the isolation microstrip line 6 is connected, the isolation microstrip line 6 is connected to the isolation quarter-wavelength microstrip line 9, and the isolation quarter-wavelength microstrip line 9 is connected to the central metal disk 10; the three transmission branches and the central metal disk 10 together form a Y-shaped branch with an angle of 120° to each other, and the characteristic impedance of each transmission line unit on the Y-shaped branch is the same as each other, and is the same as the impedance of the input port 1, the output port 2 and the isolation port 3, that is, the input port 1, the input microstrip line 4, the input quarter-wavelength microstrip line 7, the output port 2, the output microstrip line 5, the output quarter-wavelength microstrip line 8, the isolation port 3, the isolation microstrip line 6, and the isolation quarter-wavelength microstrip line 9 have the same impedance; the heat dissipation branch is a quarter-wavelength transmission line that is grounded through a heat dissipation column, which will not affect the signal of the transmission branch; the symmetrical connection of the heat dissipation branch and the dielectric heat dissipation module enables the circulator to maintain uniform heat dissipation.

[0029] See also Figure 2 As shown, in the embodiment, a coplanar microstrip line group is adopted, wherein heat dissipation branches and dielectric heat dissipation modules are newly added to improve the heat dissipation structure, the central metal disk 10 is connected to three heat dissipation transmission lines 11, the three heat dissipation transmission lines 11 are respectively connected to heat dissipation columns 12, and the heat dissipation columns 12 are grounded; the three heat dissipation branches and the central metal disk 10 together form a Y-shaped branch and the angles are 120° to each other, the ferrite cylinder 14 is embedded in the inner center of the dielectric substrate 13, the metal bottom plate is located on the lower surface of the dielectric substrate 13, the metal conductor is located on the upper surface of the dielectric substrate 13, the lower surface of the ferrite cylinder 14 is grounded, the upper surface is close to the central metal disk 10, and the radius of the ferrite cylinder 14 is consistent with the radius of the central metal disk 10; the dielectric heat dissipation modules 15 are evenly distributed in the dielectric substrate 13, and the structural size of the dielectric heat dissipation module 15 and the position of the dielectric heat dissipation module 15 embedded in the dielectric substrate 13 can be reasonably changed.

[0030] like Figure 3 and Figure 4 As shown, Figure 3 The middle heat dissipation column is a rectangular structure. Figure 4The middle heat dissipation column is a cylindrical structure. The structure and size of the heat dissipation column 12 of the heat dissipation branch of the embodiment can be reasonably changed to adapt to the size of the dielectric substrate 13 and improve the heat dissipation efficiency of the circulator.

[0031] In the embodiment, the characteristic impedance of all ports, namely the input port 1, the output port 2, and the isolation port 3, is 50 Ohm; the characteristic impedance of the input microstrip line 4, the output microstrip line 5, and the isolation microstrip line 6 is 50 Ohm.

[0032] The circulator model mentioned above is simulated using Ansys Icepak simulation software. When the input power of the circulator remains unchanged, the temperature of the circulator is reduced by increasing the structural size of the heat dissipation column. At the same time, the density of the dielectric heat dissipation module embedded in the dielectric is increased, and the temperature of the circulator is further reduced, which means that the heat dissipation performance of the circulator is improved, and a circulator with high power capacity can be realized.

[0033] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A high power capacity circulator, characterized in that: The invention comprises a dielectric substrate (13), a metal bottom plate arranged at the bottom of the dielectric substrate (13), and a ferrite column (14) embedded in the center of the dielectric substrate (13), characterized in that a metal conductor is also arranged at the upper end of the dielectric substrate (13), and the metal conductor comprises: A central metal disc (10) disposed on the upper end of the ferrite cylinder (14); A dielectric heat dissipation module (15), wherein a plurality of dielectric heat dissipation modules (15) are embedded in the dielectric substrate (13); Transmission branches, there are three transmission branches, and the three transmission branches and the central metal disk form a Y-shaped branch; Heat dissipation branches, there are three heat dissipation branches, the three heat dissipation branches and the central metal disk form a Y-shaped branch, and the heat dissipation branches do not overlap with the transmission branches.

2. The high power handling circulator according to claim 1, characterized in that: The angle between the three transmission branches is 120°; the angle between the three heat dissipation branches is also 120°.

3. The high power handling circulator according to claim 1, characterized in that: It also includes an input port (1), an output port (2) and an isolation port (3).

4. The high power handling circulator according to claim 3, characterized in that: The three transmission branches all include a quarter-wavelength microstrip line, and also respectively include an input microstrip line (4), an output microstrip line (5) and an isolation microstrip line (6).

5. The high power handling circulator according to claim 4, characterized in that: The input port (1) is connected to an input microstrip line (4), and the input microstrip line (4) is connected to a central metal disk (10) via an input quarter-wavelength microstrip line (7); the output port (2) is connected to an output microstrip line (5), and the output microstrip line (5) is connected to the central metal disk (10) via an output quarter-wavelength microstrip line (8); and the isolation port (3) is connected to an isolation microstrip line (6), and the isolation microstrip line (6) is connected to the central metal disk via an isolation quarter-wavelength microstrip line (9).

6. The high power handling circulator according to claim 1, characterized in that: The three heat dissipation branches each include a heat dissipation transmission line (11) and a heat dissipation column (12).

7. The high power handling circulator according to claim 6, characterized in that: One end of the heat dissipation column (12) is connected to the heat dissipation transmission line (11), and the other end is grounded.

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