Microstrip circulator

Abstract

This utility model discloses a microstrip circulator, including a ferrite substrate and a signal conductor connected to one end face of the ferrite substrate; it also includes a side conductor and a pin; one end of the side conductor is connected to the signal conductor, and the other end is connected to the pin; the side conductor is located on the side of the ferrite substrate, and the pin is located on the side of the ferrite substrate away from the signal conductor. This microstrip circulator uses a side conductor and pins instead of existing metallized vias, and uses the side conductor and pins to connect the signal conductor and the conductor located at the other end of the ferrite substrate, which helps to simplify the manufacturing process, shorten production time, and reduce production costs.

Description

Technical Field

[0001] This utility model relates to the field of microwave device technology, and in particular to microstrip circulators. Background Technology

[0002] Microstrip circulators / isolators have advantages such as small size, easy installation, simple maintenance, and high reliability. They are widely used in microwave integrated circuits of various civilian and military equipment such as radar, communication, electronic warfare, and aerospace. They are indispensable components in microwave integrated circuits, with a wide range of applications and large usage.

[0003] Currently, the fabrication of traditional microstrip circulators typically requires drilling holes in the ferrite substrate, followed by via metallization to connect signal conductors located on both sides of the substrate. Fabricating metallized vias on the ferrite substrate requires expensive equipment, involves lengthy production times, is complex, and results in high production costs. When mounting microstrip circulators in surface mount technology (SMT) processes, traditional microstrip circulators generally suffer from complex manufacturing processes and low reliability, making them unsuitable for the compact structure and convenient mounting requirements of SMT microstrip circulators. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a microstrip circulator with a simple manufacturing process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a microstrip circulator, including a ferrite substrate and a signal conductor connected to one end face of the ferrite substrate; it also includes a side conductor and a pin; one end of the side conductor is connected to the signal conductor, and the other end is connected to the pin; the side conductor is located on the side of the ferrite substrate, and the pin is located on the side of the ferrite substrate away from the signal conductor.

[0006] Furthermore, the signal conductor includes three first resonators and three second resonators, which are radially distributed and spaced apart.

[0007] Furthermore, the first resonator is provided with a protruding connecting part, which is connected to the side conductor.

[0008] Furthermore, the first resonator and / or the second resonator are provided with short capacitive transmission lines extending to both sides.

[0009] Furthermore, the signal conductor, side conductor, and pins are integrally molded into a single structure.

[0010] Furthermore, the signal conductor is bonded to the ferrite substrate.

[0011] Furthermore, the ferrite substrate is cylindrical or prismatic.

[0012] Furthermore, it also includes a dielectric sheet and a permanent magnet, with the dielectric sheet connected to the side of the signal conductor away from the ferrite substrate, and the permanent magnet connected to the side of the dielectric sheet away from the signal conductor.

[0013] Furthermore, it also includes a grounding conductor, which is connected to the end face of the ferrite substrate away from the signal conductor.

[0014] Furthermore, the grounding conductor is provided with a clearance notch for avoiding the pin.

[0015] The beneficial effects of this utility model are as follows: This microstrip circulator uses side conductors and pins to replace the existing metallized vias. The side conductors and pins connect the signal conductor and the conductor located at the other end of the ferrite substrate, which helps to simplify the manufacturing process, shorten the production time, and reduce the production cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the microstrip circulator according to Embodiment 1 of this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of the microstrip circulator according to Embodiment 1 of this utility model. Figure 2 ;

[0018] Figure 3 This is a cross-sectional view of the microstrip circulator according to Embodiment 1 of this utility model;

[0019] Figure 4 for Figure 3 Enlarged detail of section A in the middle;

[0020] Figure 5 This is a schematic diagram of the signal conductor, side conductor, and pins in the microstrip circulator of Embodiment 1 of this utility model.

[0021] Label Explanation:

[0022] 1. Ferrite substrate;

[0023] 2. Signal conductor; 21. First resonator; 22. Second resonator; 23. Connecting part; 24. Capacitive short transmission line;

[0024] 3. Side conductor;

[0025] 4. Pins;

[0026] 5. Medium sheet;

[0027] 6. Permanent magnet;

[0028] 7. Grounding conductor; 71. Clearance gap. Detailed Implementation

[0029] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0030] Please refer to Figure 1 and Figure 2 The microstrip circulator includes a ferrite substrate 1 and a signal conductor 2 connected to one end face of the ferrite substrate 1; it also includes a side conductor 3 and a pin 4; one end of the side conductor 3 is connected to the signal conductor 2, and the other end is connected to the pin 4; the side conductor 3 is located on the side of the ferrite substrate 1, and the pin 4 is located on the side of the ferrite substrate 1 away from the signal conductor 2.

[0031] As can be seen from the above description, the beneficial effects of this utility model are as follows: This microstrip circulator uses a side conductor 3 in conjunction with a pin 4 to replace the existing metallized vias. The side conductor 3 and the pin 4 are used to connect the signal conductor 2 and the conductor located at the other end of the ferrite substrate 1, which helps to simplify the manufacturing process, shorten the production time, and reduce the production cost.

[0032] Furthermore, the signal conductor 2 includes three first resonators 21 and three second resonators 22, which are radially distributed and spaced apart.

[0033] Furthermore, the first resonator 21 is provided with a protruding connecting part 23, which is connected to the side conductor 3.

[0034] Furthermore, the first resonator 21 and / or the second resonator 22 are provided with capacitive short transmission lines 24 extending to both sides.

[0035] As can be seen from the above description, the capacitive short transmission line 24 can improve the impedance matching of the signal conductor 2.

[0036] Furthermore, the signal conductor 2, the side conductor 3, and the pin 4 are integrally formed into a single structure.

[0037] As can be seen from the above description, the integrated structure can reduce manufacturing and assembly steps and improve production efficiency.

[0038] Furthermore, the signal conductor 2 is adhesively bonded to the ferrite substrate 1.

[0039] As can be seen from the above description, the connection between the signal conductor 2 and the ferrite substrate 1 is simple, which greatly reduces the production cycle and processing cost of the microstrip circulator.

[0040] Furthermore, the ferrite substrate 1 is cylindrical or prismatic.

[0041] As can be seen from the above description, the shape of the ferrite substrate 1 can be selected according to the actual needs of use.

[0042] Furthermore, it also includes a dielectric sheet 5 and a permanent magnet 6. The dielectric sheet 5 is connected to the side of the signal conductor 2 away from the ferrite substrate 1, and the permanent magnet 6 is connected to the side of the dielectric sheet 5 away from the signal conductor 2.

[0043] As described above, the permanent magnet 6 provides a bias magnetic field for the microstrip circulator; the dielectric sheet 5 is used to separate the signal conductor 2 and the permanent magnet 6. Adjusting the size of the dielectric sheet 5 can adjust the distance between the permanent magnet 6 and the ferrite substrate 1, thereby adjusting the magnitude of the magnetic field.

[0044] Furthermore, it also includes a grounding conductor 7, which is connected to the end face of the ferrite substrate 1 away from the signal conductor 2.

[0045] As can be seen from the above description, setting the grounding conductor 7 can ensure stable transmission of electrical signals.

[0046] Furthermore, the grounding conductor 7 is provided with a clearance notch 71 for avoiding the pin 4.

[0047] As can be seen from the above description, setting the clearance gap 71 can prevent the grounding conductor 7 from coming into contact with the pin 4 and causing a short circuit.

[0048] Please refer to Figure 1 The first embodiment of this utility model is a microstrip circulator, including a ferrite substrate 1 and a signal conductor 2 connected to one end face of the ferrite substrate 1; it also includes a side conductor 3 and a pin 4; one end of the side conductor 3 is connected to the signal conductor 2, and the other end is connected to the pin 4; the side conductor 3 is located on the side of the ferrite substrate 1, and the pin 4 is located on the side of the ferrite substrate 1 away from the signal conductor 2.

[0049] like Figure 1 and Figure 2 As shown, the microstrip circulator also includes a dielectric sheet 5, a permanent magnet 6, and a grounding conductor 7. The dielectric sheet 5 is connected to the side of the signal conductor 2 away from the ferrite substrate 1, and the permanent magnet 6 is connected to the side of the dielectric sheet 5 away from the signal conductor 2. The grounding conductor 7 is connected to the end face of the ferrite substrate 1 away from the signal conductor 2. Specifically, the ferrite substrate 1, the dielectric sheet 5, and the permanent magnet 6 are all cylindrical, with the diameter of the ferrite substrate 1 being larger than the diameter of the dielectric sheet 5, and the diameter of the dielectric sheet 5 being larger than the diameter of the permanent magnet 6. In other embodiments, the ferrite substrate 1, the dielectric sheet 5, or the permanent magnet 6 can be prismatic; it is also feasible for the maximum width of the dielectric sheet 5 to be greater than or equal to the maximum width of the ferrite substrate 1; it is also feasible for the maximum width of the permanent magnet 6 to be greater than or equal to the maximum width of the dielectric sheet 5.

[0050] like Figure 1As shown, to avoid the stacking of the ground conductor 7 and pin 4, which would increase the overall thickness of the microstrip circulator, the ground conductor 7 is provided with a clearance notch 71 to avoid the pin 4. Specifically, the clearance notch 71 is set one-to-one with the pin 4.

[0051] like Figure 5 As shown, the signal conductor 2, side conductor 3, and pin 4 are a single, integrally formed structure. Optionally, the manufacturing processes for the signal conductor 2, side conductor 3, and pin 4 include, but are not limited to, laser engraving, etching, wire cutting, machining, and stamping. In other embodiments, it is also feasible for the signal conductor 2, side conductor 3, and pin 4 to be a separate structure.

[0052] like Figure 5 As shown, the signal conductor 2 includes three first resonators 21 and three second resonators 22, which are radially distributed and spaced apart. Each first resonator 21 has a protruding connecting portion 23, which connects to the side conductor 3. The first resonators 21, connecting portions 23, side conductors 3, and pins 4 are arranged in a one-to-one correspondence.

[0053] like Figure 5 As shown, the ends of the first resonator 21 and the second resonator 22 are respectively provided with capacitive short transmission lines 24 extending to both sides. The capacitive short transmission lines 24 can improve the impedance matching of the signal conductor 2.

[0054] The signal conductor 2 is bonded to the ferrite substrate 1 with epoxy resin or conductive adhesive.

[0055] The side conductor 3 is bonded to the side of the ferrite substrate 1 with epoxy resin or conductive adhesive.

[0056] Pin 4 is bonded to ferrite substrate 1 with epoxy resin or conductive adhesive.

[0057] In summary, the microstrip circulator provided by this utility model uses side conductors and pins to replace existing metallized vias. The side conductors and pins connect the signal conductor and the conductor located at the other end of the ferrite substrate, which helps to simplify the manufacturing process, shorten production time, and reduce production costs.

[0058] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A microstrip circulator, comprising a ferrite substrate and a signal conductor connected to one end face of the ferrite substrate; characterized in that, It also includes a side conductor and a pin; one end of the side conductor is connected to the signal conductor, and the other end is connected to the pin; the side conductor is located on the side of the ferrite substrate, and the pin is located on the side of the ferrite substrate away from the signal conductor.

2. The microstrip circulator according to claim 1, characterized in that, The signal conductor includes three first resonators and three second resonators, which are radially distributed and spaced apart.

3. The microstrip circulator according to claim 2, characterized in that, The first resonator has a protruding connecting part, which is connected to the side conductor.

4. The microstrip circulator according to claim 2, characterized in that, The first resonator and / or the second resonator are provided with short capacitive transmission lines extending to both sides.

5. The microstrip circulator according to claim 1, characterized in that, The signal conductor, side conductor, and pins are integrally formed into a single structure.

6. The microstrip circulator according to claim 1, characterized in that, The signal conductor is bonded to the ferrite substrate.

7. The microstrip circulator according to claim 1, characterized in that, The ferrite substrate is cylindrical or prismatic.

8. The microstrip circulator according to claim 1, characterized in that, It also includes a dielectric sheet and a permanent magnet, wherein the dielectric sheet is connected to the side of the signal conductor away from the ferrite substrate, and the permanent magnet is connected to the side of the dielectric sheet away from the signal conductor.

9. The microstrip circulator according to claim 1, characterized in that, It also includes a grounding conductor, which is connected to the end face of the ferrite substrate away from the signal conductor.

10. The microstrip circulator according to claim 9, characterized in that, The grounding conductor has a clearance notch for avoiding the pin.

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