A dual-segment microstrip circulator

Abstract

This invention relates to the field of microwave ferrite device technology and discloses a dual-section microstrip circulator, comprising: a magnetic sheet, and a ferrite gyromagnet and a resistor disposed on the upper surface of the magnetic sheet, wherein a circuit is added to the upper surface of the ferrite gyromagnet, and the circuit is connected to a microstrip filter; a ceramic sheet disposed on the upper surface of the circuit, and a samarium cobalt is added to the top of the ceramic sheet. This dual-section microstrip circulator, through the combined structure of the magnetic sheet, ferrite gyromagnet, circuit, microstrip filter, ceramic sheet, samarium cobalt, and resistor, can effectively improve isolation and meet the system's high isolation requirements; the microstrip filter connected to the circuit can improve the second harmonic characteristics, improving the problem of poor second harmonic characteristics in conventional microstrip circulators; the ferrite gyromagnet, as a gyromagnetic material, combined with the dual-section circuit design, helps to achieve low transmission loss characteristics; the overall structural design makes the circulator small in size and light in weight, and has high reliability.

Description

Technical Field

[0001] This invention relates to the field of microwave ferrite device technology, specifically a dual-junction microstrip circulator. Background Technology

[0002] This invention belongs to the field of microwave ferrite device technology and is mainly used in microwave communication, radar and electronic countermeasures systems. As a key device for realizing signal transmission and reception functions, its performance has an important impact on the overall operation of the system.

[0003] In existing technologies, conventional circulators mostly adopt a single-section structure design. This structure makes it difficult to simultaneously achieve high isolation and low transmit loss, resulting in low isolation that fails to meet the system's signal isolation requirements. Due to uneven magnetization and structural limitations, conventional microstrip circulators have poor second-harmonic characteristics and are prone to harmonic interference. Furthermore, some circulators are large, heavy, and lack reliability, which can affect system stability and limit the operating bandwidth and overall performance improvement in electronic countermeasures systems. Therefore, a dual-section microstrip circulator is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dual-section microstrip circulator to solve the technical problems of the aforementioned circulators being large in size, heavy in weight, and lacking in reliability. In electronic countermeasures and other systems, these issues can affect system stability, limit the width of the operating frequency band, and restrict the improvement of overall performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-segment microstrip circulator, comprising:

[0006] A magnetic sheet, and a ferrite gyromagnetic magnet and a resistor disposed on the upper surface of the magnetic sheet, wherein a circuit is added to the upper surface of the ferrite gyromagnetic magnet, and the circuit is connected to a microstrip filter.

[0007] A ceramic sheet is placed on the upper surface of the circuit, and samarium cobalt is added to the top of the ceramic sheet.

[0008] The magnetic conductive sheet serves as the basic supporting structure of the entire device, providing mounting support for the components above and assisting in building a stable magnetic circuit environment to ensure the continuity of magnetic field transmission.

[0009] Ferrite gyromagnetic material is disposed on the upper surface of the magnetic sheet. As the core gyromagnetic material, it will generate gyromagnetic properties under the action of an external magnetic field, providing a physical basis for the circular transmission of signals.

[0010] The upper surface of the ferrite gyromagnet is provided with a circuit, which includes a double Y-disk central section structure. Two circulator units are connected by microstrip lines to form a double section structure, realizing directional circular transmission of signals. The double section design enhances the signal isolation effect.

[0011] The circuit is connected to a microstrip filter. When the signal is transmitted through the circuit, the microstrip filter will suppress and filter the second harmonic in the signal, thereby improving the characteristics of the second harmonic.

[0012] The upper surface of the circuit is covered with a ceramic plate, which serves as insulation and support, preventing the circuit from being directly electrically connected to the components above, and providing a stable mounting platform for samarium cobalt.

[0013] Samarium cobalt is placed at the top of the ceramic sheet. As a permanent magnet, samarium cobalt provides the necessary external constant magnetic field for the ferrite gyromagnetism, ensuring the stable performance of the ferrite gyromagnetism and guaranteeing the stability of signal transmission.

[0014] A resistor is also provided on the upper surface of the magnetic sheet. The resistor participates in the impedance matching of the circuit, reduces reflection loss during signal transmission, and further optimizes signal transmission efficiency.

[0015] Preferably, annular grooves are formed on both sides of the upper and lower surfaces of the ferrite magnet, and the circuit is located at the center of the upper surface of the ferrite magnet.

[0016] The annular groove optimizes the magnetic field distribution around the ferrite magnet, and the circuit's central location facilitates centralized signal transmission and processing, thereby improving the overall signal transmission efficiency of the device.

[0017] Preferably, a ceramic dielectric sleeve is added to the upper surface of the ferrite gyromagnet, and the ceramic dielectric sleeve is disposed in a corresponding annular groove, the ceramic dielectric sleeve being positioned corresponding to the circuit.

[0018] The ceramic dielectric sleeve is placed in the corresponding position, which can enhance the dielectric stability between the circuit and the ferrite magnet, reduce interference during signal transmission, and at the same time play a certain role in protecting the circuit.

[0019] Preferably, a ferrite disc is added to the lower surface of the ferrite gyromagnet, and the ferrite disc is disposed in a corresponding annular groove.

[0020] The addition of ferrite discs can enhance the magnetic properties of the ferrite gyromagnetic lower surface, improve the overall permeability of the device, and help optimize the magnetic field response characteristics.

[0021] Preferably, the circuit includes branches, and the branches of the circuit are respectively connected to the input and output terminals of the microstrip filter.

[0022] The circuit branches are connected to the input and output terminals of the microstrip filter, which can realize effective signal splitting and merging, optimize the signal transmission path, and improve the filtering effect of the microstrip filter on the signal.

[0023] Preferably, the branch has a spiral structure, and the central region of the branch is aligned with the center of the ferrite magnet, and the spiral path of the branch is uniformly distributed along the surface of the ferrite magnet.

[0024] The spiral structure increases the length of the signal transmission path. The alignment of the central region and the uniform distribution of the spiral path enable the signal to be uniformly coupled on the ferrite gyromagnetic surface, enhancing the stability and consistency of the signal and improving the working performance of the device.

[0025] Preferably, the lower surface of the magnetic conductive sheet is provided with positioning protrusions, and the positioning protrusions are evenly distributed along the edge of the magnetic conductive sheet.

[0026] The positioning protrusions are evenly distributed along the edge of the magnetic sheet, which can play a good positioning role during the assembly of the device, facilitate the accurate installation of each component, and improve the stability of the overall structure.

[0027] Preferably, the positioning protrusion is cylindrical in shape, and the height of the positioning protrusion is the same as the thickness of the magnetic sheet. The top of the positioning protrusion is in contact with the lower surface of the ferrite magnet.

[0028] The cylindrical positioning protrusion has the same height as the thickness of the magnetic sheet and its top is in contact with the lower surface of the ferrite magnet. This not only ensures the accuracy of positioning but also enhances the tightness of the connection between the magnetic sheet and the ferrite magnet, thus improving the compactness of the device structure.

[0029] Preferably, the upper surface of the samarium cobalt is provided with an insulating coating, and the insulating coating covers the upper surface of the samarium cobalt.

[0030] The insulating coating covering the upper surface of samarium cobalt effectively provides insulation, preventing short circuits between samarium cobalt and other components, protecting the performance of samarium cobalt, and improving the safety of the device.

[0031] Preferably, the lower surface of the microstrip filter is provided with a boss, and the boss is in contact with the upper surface of the circuit, and the edge of the boss is aligned with the inner edge of the ceramic sheet.

[0032] The boss fits snugly against the upper surface of the circuit and its edge aligns with the inner edge of the ceramic plate, enhancing the stability of the connection between the microstrip filter and the circuit. It also facilitates the coordination and cooperation between various components, optimizing the signal transmission environment.

[0033] Compared with the prior art, the present invention provides a dual-segment microstrip circulator with the following advantages:

[0034] This dual-section microstrip circulator, through the combination of a magnetic sheet, ferrite gyromagnet, circuit, microstrip filter, ceramic sheet, samarium cobalt and resistor, can effectively improve the isolation and meet the system's high isolation requirements;

[0035] The microstrip filter connected to the circuit can improve the second harmonic characteristics and improve the problem of poor second harmonic characteristics in conventional microstrip circulators;

[0036] Ferrite gyromagnetism, as a gyromagnetic material, combined with a two-section circuit design, helps to achieve low transmission loss. The overall structural design makes the circulator small in size and light in weight, with high reliability. When applied to electronic countermeasures systems, it can improve system stability, reduce harmonic interference, and has a wide operating bandwidth and high performance, which can better assist radar in carrying out electronic reconnaissance, jamming and defense. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the overall detachable structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the ferrite gyromagnetic lower surface structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the ferrite gyromagnetic structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the ferrite disc structure of the present invention;

[0042] Figure 6 This is a schematic diagram of the circuit and its connection structure of the present invention.

[0043] In the diagram: 1. Magnetic sheet; 2. Ferrite gyromagnet; 3. Circuit; 4. Microstrip filter; 5. Ceramic sheet; 6. Samarium cobalt; 7. Resistor; 8. Annular groove; 9. Ferrite disc; 10. Ceramic dielectric sleeve. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] This invention provides a technical solution: a dual-segment microstrip circulator, comprising: (See details) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , magnetic sheet 1, and ferrite gyromagnet 2 and resistor 7 disposed on the upper surface of magnetic sheet 1, and circuit 3 is added to the upper surface of ferrite gyromagnet 2, and microstrip filter 4 is connected to circuit 3.

[0046] A ceramic sheet 5 is disposed on the upper surface of the circuit 3, and a samarium cobalt 6 is added to the top of the ceramic sheet 5.

[0047] The magnetic conductive sheet 1 serves as the basic supporting structure of the entire device, providing mounting support for the components above and assisting in building a stable magnetic circuit environment to ensure the continuity of magnetic field transmission.

[0048] Ferrite gyromagnetic material 2 is disposed on the upper surface of magnetic sheet 1. As the core gyromagnetic material, it will generate gyromagnetic properties under the action of an external magnetic field, providing a physical basis for the circular transmission of signals.

[0049] The upper surface of the ferrite gyromagnet 2 is provided with a circuit 3, which includes a double Y-disk central section structure. Two circulator units are connected by microstrip lines to form a double section structure, realizing directional circular transmission of signals and enhancing signal isolation effect with the help of the double section design.

[0050] Circuit 3 is connected to microstrip filter 4. When the signal is transmitted through circuit 3, microstrip filter 4 will suppress and filter the second harmonic in the signal, and improve the characteristics of the second harmonic.

[0051] A ceramic sheet 5 is provided on the upper surface of circuit 3, which serves as insulation and support, preventing circuit 3 from being directly electrically connected to the components above, and providing a stable mounting platform for samarium cobalt 6.

[0052] Samarium cobalt 6 is provided at the top of ceramic plate 5. As a permanent magnet, Samarium cobalt 6 provides the required external constant magnetic field for ferrite gyromagnetic magnet 2, ensuring that the gyromagnetic characteristics of ferrite gyromagnetic magnet 2 are stably performed and ensuring the stability of signal transmission.

[0053] A resistor 7 is also provided on the upper surface of the magnetic sheet 1. The resistor 7 participates in the impedance matching of the circuit 3, reduces the reflection loss during signal transmission, and further optimizes the signal transmission efficiency.

[0054] The device adopts a dual-section structure design, which is realized by connecting the central section of the dual Y-disk in circuit 3 to the microstrip line. Compared with the conventional single-section circulator, it significantly improves the isolation of the device and meets the system's requirements for high isolation performance.

[0055] Circuit 3 is connected to microstrip filter 4. Through the suppression of second harmonics by microstrip filter 4, the problem of poor second harmonics in conventional microstrip circulators is effectively improved, and the characteristics of second harmonics are enhanced.

[0056] The high degree of integration of each structure and the compact layout of components such as magnetic sheet 1, ferrite gyromagnet 2, and circuit 3 enable the miniaturization design of the device, which meets the miniaturization requirements of X-band equipment.

[0057] Samarium Cobalt 6 provides a stable external magnetic field, which, together with the stable magnetic circuit constructed by the magnetic conductive sheet 1, ensures the stability of the ferrite gyromagnetic 2, reduces signal transmission loss, and achieves low-loss characteristics.

[0058] With high overall structural reliability, it is suitable for complex systems such as electronic countermeasures, which can improve system stability, reduce harmonic interference, and has a wide operating bandwidth and excellent performance, effectively assisting radar in carrying out electronic reconnaissance, jamming and defense tasks.

[0059] Please see Figure 2 Annular grooves 8 are provided on both sides of the upper and lower surfaces of the ferrite gyromagnet 2, and the circuit 3 is located at the center of the upper surface of the ferrite gyromagnet 2.

[0060] The ferrite magnet 2 is processed by creating annular grooves 8 on both sides of its upper surface and both sides of its lower surface. Then, the circuit 3 is placed at the center of the upper surface of the ferrite magnet 2.

[0061] The annular groove 8 optimizes the magnetic field distribution around the ferrite gyromagnet 2, and the circuit 3 is located in the center, which is conducive to the centralized transmission and processing of signals and improves the signal transmission efficiency of the overall device.

[0062] A ceramic dielectric sleeve 10 is added to the upper surface of the ferrite gyromagnet 2, and the ceramic dielectric sleeve 10 is set in the corresponding annular groove 8. The position of the ceramic dielectric sleeve 10 corresponds to that of the circuit 3.

[0063] On the upper surface of the ferrite gyromagnet 2 with the annular groove 8 already opened, the ceramic dielectric sleeve 10 is installed into the corresponding annular groove 8. During the installation process, ensure that the ceramic dielectric sleeve 10 corresponds to the position of the circuit 3.

[0064] The ceramic dielectric sleeve 10 is set in the corresponding position, which can enhance the dielectric stability between the circuit 3 and the ferrite gyromagnet 2, reduce interference during signal transmission, and at the same time play a certain role in protecting the circuit 3.

[0065] Ferrite discs 9 are added to the lower surface of the ferrite gyromagnet 2, and the ferrite discs 9 are disposed in the corresponding annular grooves 8.

[0066] A ferrite disc 9 is installed in the annular groove 8 on the lower surface of the ferrite gyromagnet 2, so that the ferrite disc 9 is fitted into the corresponding annular groove 8.

[0067] The addition of ferrite disc 9 can enhance the magnetic properties of the lower surface of ferrite gyromagnet 2, improve the permeability of the overall device, and help optimize the magnetic field response characteristics.

[0068] Circuit 3 includes branches, and the branches of circuit 3 are respectively connected to the input and output terminals of microstrip filter 4.

[0069] When constructing circuit 3, make it include a branch section, and then connect the branches of circuit 3 to the input and output terminals of microstrip filter 4 respectively;

[0070] The branch of circuit 3 is connected to the input and output terminals of microstrip filter 4, which can realize effective signal splitting and merging, optimize the signal transmission path, and improve the filtering effect of microstrip filter 4 on the signal.

[0071] The branch has a spiral structure, and the central region of the branch is aligned with the center of the ferrite gyromagnet 2. The spiral path of the branch is evenly distributed along the surface of the ferrite gyromagnet 2.

[0072] The branch of circuit 3 is designed as a spiral structure. During the installation process, the central area of ​​the branch is aligned with the center position of the ferrite magnet 2, and the spiral path of the branch is evenly distributed along the surface of the ferrite magnet 2.

[0073] The spiral structure increases the length of the signal transmission path. The alignment of the central region and the uniform distribution of the spiral path enable the signal to be uniformly coupled on the ferrite gyromagnetic surface, enhancing the stability and consistency of the signal and improving the working performance of the device.

[0074] The lower surface of the magnetic sheet 1 is provided with positioning protrusions, and the positioning protrusions are evenly distributed along the edge of the magnetic sheet 1.

[0075] Positioning protrusions are machined on the lower surface of the magnetic sheet 1, and the positioning protrusions are evenly distributed along the edge of the magnetic sheet 1.

[0076] The positioning protrusions are evenly distributed along the edge of the magnetic sheet 1, which can play a good positioning role during the assembly of the device, facilitate the accurate installation of each component, and improve the stability of the overall structure.

[0077] The positioning protrusion is cylindrical in shape, and its height is the same as the thickness of the magnetic sheet 1. The top of the positioning protrusion is in contact with the lower surface of the ferrite magnet 2.

[0078] The positioning protrusion is made into a cylindrical shape, and the height of the positioning protrusion is controlled to be the same as the thickness of the magnetic sheet 1. During installation, ensure that the top of the positioning protrusion is in contact with the lower surface of the ferrite magnet 2.

[0079] The cylindrical positioning protrusion has the same height as the thickness of the magnetic sheet 1 and its top end is in contact with the lower surface of the ferrite magnet 2. This not only ensures the accuracy of positioning but also enhances the tightness of the connection between the magnetic sheet 1 and the ferrite magnet 2, thereby improving the compactness of the device structure.

[0080] The upper surface of samarium cobalt-6 is provided with an insulating coating, and the insulating coating covers the upper surface of samarium cobalt-6.

[0081] An insulating coating is applied to the upper surface of samarium cobalt-6 to ensure that the insulating coating completely covers the upper surface of samarium cobalt-6;

[0082] The insulating coating covering the upper surface of samarium cobalt-6 effectively provides insulation, preventing short circuits between samarium cobalt-6 and other components, protecting the performance of samarium cobalt-6, and improving the safety of the device.

[0083] The lower surface of the microstrip filter 4 is provided with a boss, which is attached to the upper surface of the circuit 3, and the edge of the boss is aligned with the inner edge of the ceramic sheet 5.

[0084] A boss is machined on the lower surface of the microstrip filter 4. During installation, the boss is made to fit against the upper surface of the circuit 3, and the edge of the boss is aligned with the inner edge of the ceramic sheet 5.

[0085] The boss fits against the upper surface of the circuit 3 and its edge is aligned with the inner edge of the ceramic sheet 5, which enhances the stability of the connection between the microstrip filter 4 and the circuit 3, and at the same time facilitates the coordination between the components and optimizes the signal transmission environment.

[0086] This design features: a magnetically conductive sheet 1 providing mounting support for the components above and assisting in building a stable magnetic circuit environment; a ferrite gyromagnetic magnet 2 generating gyromagnetic characteristics under the action of an external constant magnetic field provided by samarium cobalt 6; a double-section structure of circuit 3 enabling directional loop transmission of signals and enhancing isolation; a microstrip filter 4 suppressing and filtering second harmonics; a ceramic sheet 5 preventing direct electrical connection between circuit 3 and the components above; a resistor 7 participating in impedance matching of circuit 3; an annular groove 8 optimizing magnetic field distribution; a ferrite disc 9 enhancing magnetic performance; a ceramic dielectric sleeve 10 enhancing dielectric stability; positioning protrusions facilitating accurate installation of components; an insulating coating preventing short circuits; bosses enhancing connection stability; and spiral branches enhancing signal stability. The overall structure achieves high isolation, low loss, and high second harmonic characteristics, making it suitable for electronic countermeasures systems.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0088] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-segment microstrip circulator, characterized in that, include: A magnetic sheet (1), a ferrite gyromagnet (2) and a resistor (7) are disposed on the upper surface of the magnetic sheet (1), and a circuit (3) is added to the upper surface of the ferrite gyromagnet (2). The circuit (3) is connected to a microstrip filter (4), and annular grooves (8) are opened on both sides of the upper surface and both sides of the lower surface of the ferrite gyromagnet (2). The circuit (3) is located at the center of the upper surface of the ferrite gyromagnet (2). A ceramic dielectric sleeve (10) is added to the upper surface of the ferrite gyromagnet (2), and the ceramic dielectric sleeve (10) is disposed in the corresponding annular groove (8). The ceramic dielectric sleeve (10) is positioned corresponding to the circuit (3). A ferrite disc (9) is added to the lower surface of the ferrite gyromagnet (2), and the ferrite disc (9) is disposed in the corresponding annular groove (8). A ceramic sheet (5) is disposed on the upper surface of the circuit (3), and a samarium cobalt (6) is added to the top of the ceramic sheet (5).

2. The dual-segment microstrip circulator according to claim 1, characterized in that: The circuit (3) includes branches, and the branches of the circuit (3) are respectively connected to the input and output terminals of the microstrip filter (4).

3. A dual-segment microstrip circulator according to claim 2, characterized in that: The branch has a spiral structure, and the central region of the branch is aligned with the center of the ferrite gyromagnet (2). The spiral path of the branch is uniformly distributed along the surface of the ferrite gyromagnet (2).

4. A dual-segment microstrip circulator according to claim 1, characterized in that: The lower surface of the magnetic sheet (1) is provided with positioning protrusions, and the positioning protrusions are evenly distributed along the edge of the magnetic sheet (1).

5. A dual-segment microstrip circulator according to claim 4, characterized in that: The positioning protrusion is cylindrical in shape, and the height of the positioning protrusion is the same as the thickness of the magnetic sheet (1). The top of the positioning protrusion is in contact with the lower surface of the ferrite gyromagnet (2).

6. A dual-segment microstrip circulator according to claim 1, characterized in that: The upper surface of the samarium cobalt (6) is provided with an insulating coating, and the insulating coating covers the upper surface of the samarium cobalt (6).

7. A dual-segment microstrip circulator according to claim 1, characterized in that: The lower surface of the microstrip filter (4) is provided with a boss, and the boss is attached to the upper surface of the circuit (3), and the edge of the boss is aligned with the inner edge of the ceramic sheet (5).

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