Circulator

Abstract

The utility model discloses a circulator, which belongs to the technical field of circulators and comprises a shell assembly, a central conductor, a ferrite and a magnet sheet. A containing space is formed in the shell assembly, and a center conductor, a ferrite and a magnet piece are coaxially arranged in the containing space in the height direction. The at least two central conductors are arranged at intervals along the height direction of the accommodating space, each central conductor is provided with an input end, an output end and an isolation end, the input ends of different central conductors are connected in parallel, the output ends of the different central conductors are connected in parallel, and the isolation end of each central conductor is correspondingly connected with one load sheet; the two sides of the central conductor along the height direction are respectively provided with a ferrite. The top and the bottom of the containing space are each provided with a magnet piece. According to the circulator provided by the utility model, the plurality of central conductors are arranged at intervals along the height direction of the accommodating space to form the vertical laminated structure, so that the power of the circulator is effectively enhanced without increasing the size, the space utilization rate is improved, and the intermodulation interference is reduced.

Description

Technical Field

[0001] This utility model relates to the field of circulator technology, and in particular to a circulator. Background Technology

[0002] A circulator is a microwave ferrite device with non-reciprocal properties, mainly used in microwave communication, radar, electronic warfare, and other fields. Its working principle is based on the gyromagnetic properties of ferrite materials. When a constant external magnetic field is applied, the ferrite exhibits different characteristics to electromagnetic waves propagating in different directions, thus enabling unidirectional signal transmission in a specific order at each port of the circulator.

[0003] With the rapid development of microwave communication, the requirements for intermodulation and power in existing circulators are becoming increasingly stringent. The power of a circulator depends on multiple factors, including the performance of ferrite materials, structural design, and heat dissipation capabilities. Traditionally, increasing the size of ferrite and magnet components is used to improve power, but this approach results in low space utilization, which is extremely disadvantageous in applications with tight space constraints. Furthermore, excessively large sizes make circulators unsuitable for small, precision devices, limiting their application in emerging fields such as miniaturized communication equipment and portable electronic devices.

[0004] Furthermore, the structural design of circulators in existing technologies is often not optimized, resulting in a complex internal electromagnetic environment and unreasonable signal coupling methods between components. For example, the relative positions and layouts between the central conductor and the ferrite and magnet plates are not precise enough, making signals prone to mutual interference during transmission. When multiple signals of different frequencies are input simultaneously, this unreasonable structure can easily induce strong nonlinear interactions between signals, leading to a large number of intermodulation products and causing high intermodulation problems, which seriously affect the accuracy of signal transmission and the stability of the system. Utility Model Content

[0005] The purpose of this utility model is to provide a circulator to solve the technical problems in the prior art that increase power by increasing component size, resulting in excessively large circulator volume, low space utilization, and high intermodulation interference.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A circulator, comprising:

[0008] The housing assembly has an internal accommodating space, within which a central conductor, a ferrite core, and a magnet plate are coaxially arranged along the height direction. At least two central conductors are provided, spaced apart along the height direction of the accommodating space. Each central conductor has an input end, an output end, and an isolation end. The input ends of different central conductors are connected in parallel, and the output ends are also connected in parallel. Each isolation end of a central conductor is connected to a corresponding load plate. A ferrite core is provided on each side of the central conductor along the height direction. A magnet plate is provided at the top and bottom of the accommodating space.

[0009] Preferably, a uniform magnetic sheet is disposed between the magnet sheet and the ferrite, and a uniform magnetic sheet is disposed between two adjacent ferrites.

[0010] Preferably, a temperature compensation plate is coaxially disposed on the upper side of the magnet plate located at the top of the accommodating space.

[0011] Preferably, the circulator further includes pins, and the input end and the output end of the central conductor are provided with radially extending connecting portions, each of the connecting portions having an axially penetrating connecting through hole; the multiple connecting through holes corresponding to the input end and the output end are respectively coaxially aligned, and the pins are respectively inserted into the corresponding multiple connecting through holes, so that the input ends and the output ends of different central conductors are connected in parallel to each other.

[0012] Preferably, a positioning plate is provided on the outer periphery of the housing assembly, the positioning plate is directly opposite the connecting part, the positioning plate has a positioning hole, the positioning hole is coaxially aligned with the connecting through hole, and the pin can pass through and be fixed in the positioning hole.

[0013] Preferably, the housing assembly includes a body and a cover, the accommodating space is formed inside the body, and the cover and the body are detachably connected for closing or opening the accommodating space.

[0014] Preferably, the outer surface of the cover is provided with external threads, the inner wall of the main body is provided with internal threads, and the cover is threadedly connected to the main body.

[0015] Preferably, the cover has a heat dissipation hole extending along its own axial direction, and the heat dissipation hole is connected to the accommodating space.

[0016] Preferably, the outer periphery of the main body is provided with a mounting plate, and the mounting plate is recessed downward to form a plurality of mounting grooves, which are used to mount the load piece, and the number of mounting grooves is the same as the number of the center conductor.

[0017] Preferably, the central conductor has a Y-shaped structure, and the input end, the output end, and the isolation end of the central conductor are distributed at 120-degree intervals along the circumference of the central conductor.

[0018] The beneficial effects of this utility model are:

[0019] The circulator proposed in this invention uses multiple central conductors arranged at intervals along the height of the accommodating space to form a vertically stacked structure. By integrating multiple central conductors within the same accommodating space through axial stacking, the lateral projected area is the same as that of a traditional single-layer circulator structure, but the effective working area is doubled in the vertical direction. Furthermore, by forming parallel paths between the input and output ends of the multiple central conductors, when a signal is input, it is no longer limited to single-channel transmission but can enter simultaneously through multiple parallel input ends. Multiple central conductors process the signal simultaneously, and finally, the signal is output jointly through parallel output ends. This multi-channel parallel operation mode effectively enhances the circulator's power without increasing its size. Simultaneously, because multiple central conductors are connected in parallel, the power density of a single path is reduced by shunting the power load, resulting in power dispersion, improved signal transmission linearity, and reduced intermodulation interference of high-frequency signals, thus helping to reduce intermodulation interference and achieve low intermodulation. The load plate connected to the isolation end of the central conductor absorbs reverse clutter during signal transmission to reduce interference from reflected standing waves. Ferrites are placed on both sides of the central conductor, forming a closed magnetic circuit with magnetic plates at the top and bottom of the accommodating space. This effectively enhances the magnetic field uniformity in the ferrite region, allowing the material's gyromagnetic properties to be fully utilized. In summary, the circulator proposed in this invention, through its unique vertically stacked central conductor structure, multi-central conductor parallel path design, and rational layout of ferrite and magnetic plates, effectively enhances the circulator's power, improves its space utilization, and reduces intermodulation interference without increasing its size. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of the circulator provided in an embodiment of the present invention;

[0021] Figure 2 This is a front view of the circulator provided in an embodiment of the present invention;

[0022] Figure 3 This is a top view of the circulator provided in an embodiment of the present invention;

[0023] Figure 4 This is a side view of the circulator provided in an embodiment of the present invention.

[0024] In the picture:

[0025] 1. Housing assembly; 10. Accommodation space; 11. Main body; 12. Cover; 121. Heat dissipation hole; 13. Mounting plate; 131. Mounting groove; 14. Positioning plate; 141. Positioning hole; 2. Center conductor; 21. Input end; 22. Output end; 23. Isolation end; 24. Connecting part; 241. Connecting through hole; 3. Ferrite; 4. Magnet plate; 5. Load plate; 6. Uniform magnet plate; 7. Temperature compensation plate; 8. Pin pin. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 4The circulator provided in this embodiment includes a housing assembly 1, a central conductor 2, a ferrite 3, and a magnet plate 4. The housing assembly 1 has an internal accommodating space 10, within which the central conductor 2, ferrite 3, and magnet plate 4 are coaxially arranged along the height direction. At least two central conductors 2 are provided, spaced apart along the height direction of the accommodating space 10. Each central conductor 2 has an input end 21, an output end 22, and an isolation end 23. The input ends 21 of different central conductors 2 are connected in parallel, and the output ends 22 are connected in parallel. Each isolation end 23 of a central conductor 2 is connected to a load plate 5. A ferrite 3 is provided on each side of the central conductor 2 along the height direction. A magnet plate 4 is provided at the top and bottom of the accommodating space 10.

[0031] The circulator proposed in this invention uses multiple central conductors 2 arranged at intervals along the height of the accommodating space 10 to form a vertically stacked structure. By integrating multiple central conductors 2 within the same accommodating space 10 through axial stacking, the lateral projected area is the same as that of a traditional single-layer circulator structure, but the effective working area is doubled in the vertical direction. Furthermore, by forming parallel paths between the input terminals 21 and output terminals 22 of the multiple central conductors 2, when a signal is input, it is no longer limited to single-channel transmission but can enter simultaneously through multiple parallel input terminals 21. Multiple central conductors 2 process the signal simultaneously, and finally, the signal is output jointly through the parallel output terminals 22. This multi-channel parallel operation mode effectively enhances the circulator's power without increasing its size. Simultaneously, because the multiple central conductors 2 are connected in parallel, the power load is shunted, reducing the power density of a single path, thus dispersing the power, improving the linearity of signal transmission, and reducing intermodulation interference of high-frequency signals, thereby helping to reduce intermodulation interference and achieve low intermodulation. The load plate 5 connected to the isolation end 23 of the central conductor 2 absorbs reverse clutter during signal transmission to reduce interference from reflected standing waves. Ferrites 3 are respectively arranged on both sides of the central conductor 2, forming a closed magnetic circuit with the magnet plates 4 at the top and bottom of the accommodating space 10. This effectively enhances the magnetic field uniformity in the ferrite 3 region, allowing the material's gyromagnetic properties to be fully utilized. In summary, the circulator proposed in this invention, through its unique vertically stacked central conductor 2 structure, multi-central conductor 2 parallel path design, and reasonable arrangement of ferrite 3 and magnet plates 4, effectively enhances the circulator's power, improves its space utilization, and reduces intermodulation interference without increasing its size.

[0032] It is understood that although this embodiment uses a circulator as the specific implementation method, those skilled in the art should understand that the core architecture of this technical solution is also applicable to the design and implementation of isolators in optional implementation methods. By maintaining the multi-layer symmetrical arrangement of the magnetic circuit system and the parallel structure of the conductors, the connection method of the load plate 5 and the arrangement parameters of the magnetic sheets can be adjusted according to the working characteristics of the single load end of the isolator. For example, by integrating the isolation ends 23 of multiple parallel conductors into a unified load path, and optimizing the permeability gradient distribution of the uniform magnetic sheet 6 in the longitudinal magnetic circuit, directional signal transmission and reverse suppression functions can be achieved while maintaining high power density, which will not be elaborated here.

[0033] The specific structure and working principle of the circulator are described below.

[0034] In this embodiment, the central conductor 2, as the core path for electromagnetic wave transmission, is made of a highly conductive metal material and can guide the microwave signal to form a directional propagation channel between the input end 21, the output end 22, and the isolation end 23.

[0035] Preferably, the center conductor 2 has a Y-shaped structure, with its input terminal 21, output terminal 22, and isolation terminal 23 spaced 120 degrees apart along the circumference of the center conductor 2. This 120-degree spacing effectively avoids mutual interference between signals. Signals at each port are transmitted along specific angles and paths, facilitating unidirectional signal transmission in a specific order at each port of the circulator, improving the accuracy and stability of signal transmission, and thus enhancing the overall signal processing performance of the circulator.

[0036] Preferably, the central conductor 2 comprises, from the inside out, a main conductor and three concentric annular conductors with gradually increasing inner diameters, nested sequentially. The innermost main conductor is solid and made of highly conductive copper, used for low-frequency signal transmission. Its surface is silver-plated to further reduce resistance and signal transmission loss. The three outer annular conductors are used to process signals in different high-frequency bands. For example, the innermost annular conductor processes 1-3 GHz high-frequency signals, the middle annular conductor processes 3-6 GHz high-frequency signals, and the outermost annular conductor processes 6-10 GHz high-frequency signals. Each annular conductor is separated by polytetrafluoroethylene (PTFE) insulation to reduce interlayer signal interference. Coupling windows are set at specific locations on each annular conductor to enable signal interaction and collaborative processing. With this structure, the circulator can process signals in multiple frequency bands simultaneously, achieving multi-band communication functionality and improving its applicability in complex communication environments.

[0037] In this embodiment, two center conductors 2 are provided. Two center conductors 2 can handle higher power signal inputs, meeting the needs of applications with high power requirements, while avoiding space congestion caused by adding too many center conductors 2, thus achieving a balance between performance and space utilization within a limited space. In other embodiments, three, four, five, etc., center conductors 2 can be flexibly selected according to actual needs; the number of center conductors 2 is not limited here.

[0038] The ferrite 3 is made of microwave ferrite 3 material with gyromagnetic properties. Under the action of the constant magnetic field provided by the magnet sheet 4, the spin precession of its internal electrons generates a non-reciprocal effect, thereby realizing the unidirectional transmission characteristic of the signal.

[0039] Preferably, the ferrite 3 has two layers along its own thickness, with a dielectric interlayer between the two ferrite layers 3. Different communication frequency bands and environments have different requirements for the circulator's performance parameters such as bandwidth and insertion loss. By adjusting the thickness of the dielectric interlayer between the two ferrite layers 3, the propagation path and phase relationship of electromagnetic waves in the composite structure can be changed, thereby flexibly controlling the circulator's bandwidth and expanding it to meet the needs of multi-band signal transmission.

[0040] The magnet plate 4 is made of permanent magnet material with high magnetic energy product. It is arranged symmetrically on the top and bottom to form a closed magnetic circuit that runs through the ferrite 3, ensuring the uniformity and stability of the magnetic field strength in the working area.

[0041] The housing assembly 1 has a receiving space 10 for accommodating the aforementioned components. Specifically, the housing assembly 1 includes a main body 11 and a cover 12. The receiving space 10 is formed inside the main body 11. The cover 12 and the main body 11 are detachably connected for opening or closing the receiving space 10 to facilitate the installation and debugging of the components inside the circulator. During installation, the cover 12 can be easily opened to orderly place components such as the center conductor 2, ferrite 3, and magnet plate 4 into the receiving space 10 of the main body 11. During debugging or maintenance, if a problem is found with an internal component, the cover 12 can be opened at any time for inspection, replacement, or adjustment without the need for complex disassembly or damage to the entire circulator, effectively reducing maintenance costs and difficulty.

[0042] For example, the outer surface of the cover 12 is provided with external threads, and the inner wall of the body 11 is provided with internal threads, and the cover 12 and the body 11 are threadedly connected. By rotating the cover 12, the external threads and the internal threads on the inner wall of the body 11 engage with each other, which can tightly fix the cover 12 to the body 11. By rotating the cover 12 in the opposite direction, the cover 12 can be disassembled from the body 11. The threaded connection has strong fastness, high sealing performance, and is easy to assemble and disassemble, and has high versatility and practicality.

[0043] In other embodiments, the connection between the cover 12 and the main body 11 can also be a snap-fit ​​connection, a magnetic connection, a pin connection, etc., all of which are conventional connection methods and will not be described in detail here.

[0044] Preferably, a heat dissipation hole 121 is provided on the cover 12 along its own axial direction. The heat dissipation hole 121 is connected to the accommodating space 10, so that the heat generated by each component inside the accommodating space 10 during operation can be transferred to the external environment more smoothly, preventing the internal temperature from being too high and affecting the performance and service life of the circulator.

[0045] Furthermore, a temperature compensation plate 7 is coaxially mounted on the upper side of the magnet plate 4 located at the top of the accommodating space 10. During circulator operation, fluctuations in ambient temperature affect the performance of components such as the magnet plate 4 and the ferrite 3, thus impacting the overall performance of the circulator. The temperature compensation plate 7 adjusts the magnetic field characteristics according to temperature changes, offsetting the adverse effects of temperature variations on the magnetic field of the magnet plate 4. This ensures that the circulator can stably utilize the gyromagnetic properties of the ferrite 3 material under different temperature environments, enabling unidirectional signal transmission at each port in a specific order. Simultaneously, it reduces nonlinear interactions between signals caused by temperature-related electromagnetic characteristic changes, thereby reducing the generation of intermodulation products, achieving low intermodulation, and ensuring the accuracy and stability of signal transmission.

[0046] The temperature supplement plate can be made of materials such as iron-nickel alloy or piezoelectric ceramic, and there are no restrictions on its materials.

[0047] Specifically, a uniform magnetic sheet 6 is provided between the magnet sheet 4 and the ferrite 3. The uniform magnetic sheet 6 can form a gradient magnetic transition at the interface between the two. Through magnetic reluctance matching, it effectively eliminates the edge magnetic field distortion commonly found in traditional structures, better confines the magnetic lines of force within the effective working area, thereby reducing leakage magnetic loss, improving the utilization rate of the magnetic field, and allowing the gyromagnetic properties of the ferrite 3 to be fully utilized. At the same time, it significantly reduces the probability of intermodulation products generated by mutual interference between signals of different frequencies, effectively achieving low intermodulation.

[0048] Preferably, the uniform magnetic sheet 6 is divided into a high-permeability layer, a nonlinear transition layer, and an impedance matching layer sequentially from the magnet sheet 4 to the ferrite 3. Starting from the side closest to the magnet sheet 4, the first layer is a high-permeability layer with a permeability μ set in the range of 2000-3000. The high-permeability layer can quickly gather the main magnetic flux generated by the magnet sheet 4, efficiently converging the dispersed magnetic lines of force, laying the foundation for subsequent magnetic field conduction and processing. Adjacent to the high-permeability layer is the nonlinear transition layer, with a permeability μ ranging from 500 to 2000. After the main magnetic flux is quickly gathered by the high-permeability layer, magnetic saturation abrupt changes may occur during transmission due to factors such as changes in magnetic field strength. The nonlinear transition layer, through its own permeability characteristics, effectively mitigates this abrupt change, making the magnetic field change smoother and ensuring the stability of magnetic field transmission. The third layer closest to the ferrite 3 is the impedance matching layer, with a permeability μ between 100 and 500. The main function of the impedance matching layer is to form a gradual change in wave impedance with the dielectric constant of the ferrite 3. Because ferrite 3 has a specific dielectric constant, the impedance matching layer, through its suitable permeability, works in conjunction with the dielectric constant of ferrite 3 to achieve a gradual transition in wave impedance. This reduces reflection and scattering of electromagnetic waves during transmission between the magnet plate 4 and ferrite 3, improves the transmission efficiency of magnetic field energy, further optimizes the magnetic field distribution inside the circulator, enhances the overall performance of the circulator, and ensures more stable and efficient signal transmission within the circulator. Through the design of the uniform magnetic plate 6 with the aforementioned three-layer gradually changing magnetic permeability structure, the transmission and distribution characteristics of the magnetic field inside the circulator are effectively improved, enhancing the stability and reliability of the circulator under different operating conditions.

[0049] The load plate 5 is used to absorb the signal output from the isolation terminal 23 of the center conductor 2, and prevent these signals from being reflected back into the circulator and interfering with the normal signal transmission. This ensures the accuracy and stability of the unidirectional transmission of signals at each port of the circulator in a specific order, reduces the intermodulation products generated by mutual interference between signals, and achieves low intermodulation of the circulator.

[0050] Among them, the load sheet 5 can be made of carbon-based composite materials, magnetic absorbing materials, etc., and there is no limitation here.

[0051] In this embodiment, a mounting plate 13 is provided on the outer periphery of the main body 11. Multiple mounting grooves 131 are recessed downwards on the mounting plate 13, and these grooves 131 are used to mount the load pieces 5. The number of mounting grooves 131 is the same as the number of center conductors 2. The mounting grooves 131 provide mounting positions for the load pieces 5, making their installation more convenient and precise, and helping to improve the assembly efficiency of the circulator. By mounting the load pieces 5 in the mounting grooves 131 on the outer periphery of the main body 11, the internal structural layout of the circulator is more reasonable, and the positions of each component are clearly defined, which is beneficial for optimizing the internal electromagnetic environment. Corresponding the number of mounting grooves 131 to the number of center conductors 2 allows each isolation end 23 of the center conductor 2 to be accurately matched and connected to the load piece 5, further ensuring the accuracy and stability of signal processing and improving the overall performance of the circulator.

[0052] Multiple input terminals 21 and output terminals 22 of the center conductors 2 form a parallel path to enhance the power of the circulator. Therefore, the circulator also includes pins 8. The input terminals 21 and output terminals 22 of the center conductors 2 are provided with radially extending connecting portions 24, each connecting portion 24 having an axially penetrating connecting through-hole 241. The multiple connecting through-holes 241 corresponding to the input terminals 21 and output terminals 22 are coaxially aligned, and the pins 8 are respectively inserted into the corresponding multiple connecting through-holes 241, so that the input terminals 21 and output terminals 22 of different center conductors 2 are connected in parallel. When the pins 8 are vertically inserted into the connecting through-holes 241 of the input terminals 21, the pins 8 simultaneously penetrate the connecting portions 24 of all the input terminals 21 of the center conductors 2. Through the close contact between the surface of the pins 8 and the inner wall of each layer of connecting through-holes 241, the input terminals 21 of each layer of center conductors 2 form a low-impedance parallel path. Similarly, another set of pins 8 is inserted into the connecting through-holes 241 of the output terminals 22 to achieve parallel connection of the output terminals 22. Compared to traditional lateral bridging wiring, the 8-axis through-pin connection method can reduce the internal lead length by more than 90%, reduce the parallel loop inductance from 2.5nH to below 0.3nH, and improve the efficiency of high-frequency signal transmission.

[0053] Preferably, a positioning plate 14 is provided on the outer periphery of the housing assembly 1, facing the connecting part 24. The positioning plate 14 has a positioning hole 141, which is coaxially aligned with the connecting through hole 241, allowing the pin 8 to pass through and be fixed in the positioning hole 141. During installation, the operator can quickly and accurately insert the pin 8 into place based on the coaxial alignment of the positioning hole 141 and the connecting through hole 241 on the positioning plate 14, improving installation efficiency and reducing installation errors caused by inaccurate positioning. Furthermore, after the pin 8 is inserted and fixed in the positioning hole 141, the positioning plate 14 provides additional support and fixation for the pin 8, ensuring a stable connection even under vibration or external pulling during the use of the circulator, preventing loosening or displacement, thus guaranteeing the reliability of the connection between the circulator and external equipment.

[0054] The pin 8 is a PIN pin made of copper alloy, which has good conductivity and mechanical strength. The diameter of the PIN pin is slightly smaller than the diameter of the positioning hole 141 and the connecting through hole 241, so that it can be easily inserted into the connecting through hole 241. One end of the PIN pin is designed with a flat contact head for soldering to the circuit solder joints inside the circulator to ensure a good electrical connection. The other end is a needle tip, which facilitates accurate insertion into the positioning hole 141 and the connecting through hole 241 during installation.

[0055] It is understood that, in addition to the pin 8 connection method, the parallel connection of multiple center conductors 2 can also be achieved using other equivalent structural designs. For example, conductive spring sheets can be stacked between the connection portions 24 of adjacent center conductors 2, forming interlayer conductive paths through elastic contact pressure; or conductive adhesive material can be coated on the surface of each connection portion 24, achieving multilayer solid-phase diffusion connection through hot pressing. This solution does not limit the specific implementation form of the parallel connection of center conductors 2. Any technical means that can form equipotential nodes between the input ends 21 and output ends 22 of multiple center conductors 2 through mechanical connection, material bonding, or electromagnetic coupling are within the scope of protection of this claim.

[0056] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circulator, characterized in that, include: The housing assembly (1) has an internal accommodating space (10), in which a central conductor (2), a ferrite (3) and a magnet sheet (4) are coaxially arranged along the height direction; At least two center conductors (2) are provided and are arranged at intervals along the height direction of the accommodating space (10). Each center conductor (2) has an input end (21), an output end (22) and an isolation end (23). The input ends (21) of different center conductors (2) are connected in parallel to each other, and the output ends (22) are connected in parallel to each other. The isolation end (23) of each center conductor (2) is connected to a load plate (5). The central conductor (2) has a ferrite (3) on each side along the height direction; A magnet plate (4) is provided at the top and bottom of the accommodating space (10).

2. The circulator according to claim 1, characterized in that, A uniform magnetic sheet (6) is provided between the magnet sheet (4) and the ferrite (3), and the uniform magnetic sheet (6) is provided between two adjacent ferrites (3).

3. The circulator according to claim 1, characterized in that, A temperature compensation plate (7) is coaxially disposed on the upper side of the magnet plate (4) located at the top of the accommodating space (10).

4. The circulator according to claim 1, characterized in that, The circulator also includes pins (8). The input end (21) and output end (22) of the central conductor (2) are provided with radially extending connecting portions (24). Each connecting portion (24) has an axially through connecting hole (241). The multiple connecting holes (241) corresponding to the input end (21) and the output end (22) are coaxially aligned. The pins (8) are respectively inserted into the multiple connecting holes (241) corresponding to each other, so that the input ends (21) and the output ends (22) of different central conductors (2) are connected in parallel.

5. The circulator according to claim 4, characterized in that, A positioning plate (14) is provided on the outer periphery of the housing assembly (1). The positioning plate (14) is directly opposite the connecting part (24). A positioning hole (141) is provided on the positioning plate (14). The positioning hole (141) is coaxially aligned with the connecting through hole (241). The pin (8) can pass through and be fixed in the positioning hole (141).

6. The circulator according to claim 1, characterized in that, The housing assembly (1) includes a main body (11) and a cover (12). The accommodating space (10) is formed inside the main body (11). The cover (12) and the main body (11) are detachably connected for closing or opening the accommodating space (10).

7. The circulator according to claim 6, characterized in that, The outer surface of the cover (12) is provided with external threads, and the inner wall of the body (11) is provided with internal threads. The cover (12) is threadedly connected to the body (11).

8. The circulator according to claim 6, characterized in that, The cover (12) has a heat dissipation hole (121) extending through its own axis, and the heat dissipation hole (121) is connected to the accommodating space (10).

9. The circulator according to claim 6, characterized in that, The outer periphery of the main body (11) is provided with a mounting plate (13), and the mounting plate (13) is recessed downward to form a plurality of mounting grooves (131). The mounting grooves (131) are used to mount the load piece (5), and the number of mounting grooves (131) is the same as the number of the center conductor (2).

10. The circulator according to claim 1, characterized in that, The central conductor (2) has a Y-shaped structure, and the input end (21), the output end (22) and the isolation end (23) of the central conductor (2) are distributed at 120-degree intervals along the circumference of the central conductor (2).

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