High-power radio frequency coaxial connector

Abstract

The utility model discloses a high-power radio frequency coaxial connector, which belongs to the technical field of microwave radio frequency connectors and comprises a first connector and a second connector inserted with the first connector. The first connector comprises a first central conductor, a first outer conductor, a first insulator and a first shell which are coaxially arranged; a first insulator is arranged in the first shell, and a first center conductor is arranged in the first insulator; a first outer conductor is also arranged in the first shell, and the first outer conductor is positioned at one end of the first insulator; the second connector comprises a second central conductor, a second outer conductor, a second insulator and a second shell which are coaxially arranged; the opposite ends of the first central conductor and the second central conductor are in plugging cooperation. The first insulator and the second insulator are made of ceramic materials. The radio frequency coaxial connector provided by the utility model can well maintain stable signal transmission performance and structural integrity in a high-power environment.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave radio frequency connectors, and particularly relates to a high-power radio frequency coaxial connector. Background Art

[0002] In the field of radio frequency / microwave technology, radio frequency coaxial connectors, also known as RF connectors, as indispensable key components in signal transmission systems, their performance and reliability are directly related to the operating efficiency and stability of the entire system. These connectors are mainly used to connect coaxial transmission lines to ensure the efficient and lossless transmission of radio frequency or microwave signals between devices or modules, and play a crucial role in multiple fields such as wireless communication, radio and television, and radar detection.

[0003] However, traditional radio frequency coaxial connectors face many challenges when dealing with high-power transmission requirements. Among them, the most significant problem lies in the selection of their dielectric materials. Traditionally, such connectors mostly use polytetrafluoroethylene (PTFE) as the dielectric material. Although this material has good electrical properties, its thermal stability and mechanical strength are difficult to meet the application requirements in high-power environments. Specifically, the PTFE dielectric is prone to deformation at high temperatures, which not only affects the stability of the coaxial structure but also may lead to a decline in signal transmission quality. At the same time, its combustion products may also cause environmental pollution, restricting its application in high-demand occasions.

[0004] In addition, with the rapid development of modern communication technology, the requirements for power transmission in radio frequency / microwave devices are increasing day by day. Traditional radio frequency coaxial connectors using PTFE as the dielectric can only withstand a power output of about 1kW. Under high-power transmission conditions, the PTFE dielectric is extremely prone to damage due to excessive load, which in turn causes structural damage and signal leakage, seriously affecting the system performance.

[0005] Therefore, to solve the above problems, there is an urgent need for a new type of radio frequency coaxial connector that can maintain stable signal transmission performance and structural integrity in high-power environments. Summary of the Utility Model

[0006] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a high-power radio frequency coaxial connector, aiming to solve the problem that the existing radio frequency coaxial connector cannot maintain stable signal transmission performance and structural integrity well in a high-power environment. To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-power radio frequency coaxial connector includes:

[0008] A first connector and a second connector inserted into the first connector;

[0009] The first connector includes a first center conductor, a first outer conductor, a first insulator, and a first housing that are coaxially arranged; the first insulator is installed inside the first housing, and the first center conductor is installed inside the first insulator; the first outer conductor is also installed inside the first housing, and the first outer conductor is located at one end of the first insulator;

[0010] The second connector includes a second center conductor, a second outer conductor, a second insulator, and a second housing that are coaxially arranged; the second insulator is installed inside the second housing, and the second center conductor is installed inside the second insulator; the second outer conductor is also installed inside the second housing, and the second outer conductor is located at one end of the second insulator;

[0011] One end of the first center conductor and the second center conductor are inserted and matched with each other;

[0012] Both the first insulator and the second insulator are made of ceramic materials.

[0013] Furthermore, both the first insulator and the second insulator are of a hollow structure.

[0014] Furthermore, a plurality of through grooves extending along the axial direction thereof are provided on both the first insulator and the second insulator.

[0015] Furthermore, the number of the through grooves is set to three, and the three through grooves are evenly distributed along the circumferential direction of the first insulator or the second insulator.

[0016] Furthermore, a connecting nut is sleeved on the outer periphery of the first housing, and the connecting nut is located at one end close to the second connector; an internal thread is provided on the outer periphery of the second housing, and the internal thread is located at one end close to the first connector; the internal thread is threadedly connected with the connecting nut.

[0017] Furthermore, a first limiting groove is provided between the outer periphery of the first outer conductor and the connecting nut, and the first limiting groove is inserted and matched with one side of the second housing close to the first connector.

[0018] Furthermore, a second limiting groove is provided between the outer periphery of the second outer conductor and the second housing, and the second limiting groove is inserted and matched with one side of the first outer conductor close to the second connector.

[0019] Furthermore, a sealing ring is provided at the connection between the first connector and the second connector.

[0020] Furthermore, flange plates are provided on the outer peripheries of both the first housing and the second housing, and flange holes for connection are provided on the flange plates.

[0021] The beneficial effects of the present utility model are:

[0022] A high-power radio frequency coaxial connector provided by the present utility model innovatively uses ceramics as the support medium for the inner conductor and designs a hollow structure to improve the heat dissipation efficiency, achieving significant improvements in the power transmission capacity, high-temperature resistance performance, and environmental friendliness of the connector. The ceramic material, with its excellent high-temperature resistance, high precision, and non-deformability characteristics, effectively overcomes the deficiencies of traditional polytetrafluoroethylene media, providing strong technical support for the development of the radio frequency / microwave signal transmission field. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. 6 is a schematic structural diagram of the first connector head of a high-power radio frequency coaxial connector provided by the present utility model;

[0024] Figure 2 FIG. 10 is a schematic structural diagram of the second connector head of a high-power radio frequency coaxial connector provided by the present utility model;

[0025] Figure 3 FIG. 14 is a schematic structural diagram of the mating of the first connector head and the second connector head of a high-power radio frequency coaxial connector provided by the present utility model;

[0026] Figure 4 FIG. 18 is a schematic structural diagram of the first insulator or the second insulator provided by the present utility model;

[0027] Figure 5 FIG. 24 is Figure 4 a cross-sectional view along the A-A position;

[0028] Figure 6 FIG. 28 is a simulation result diagram of the reflection coefficient S11 of a high-power radio frequency coaxial connector provided by the present utility model;

[0029] Figure 7 FIG. 32 is a simulation result diagram of the field strength distribution of a high-power radio frequency coaxial connector provided by the present utility model;

[0030] In the drawings: 1. First connector head; 11. First central conductor; 12. First outer conductor; 13. First insulator; 14. First housing; 15. Connecting nut; 16. First limiting groove; 2. Second connector head; 21. Second central conductor; 22. Second outer conductor; 23. Second insulator; 24. Second housing; 25. Internal thread; 26. Second limiting groove; 3. Sealing ring; 4. Flange; 5. Cavity wall; 6. Connecting cylinder; 7. Antenna. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0032] Embodiment 1:

[0033] See the appendix Figures 1 to 7 This embodiment provides a high-power radio frequency coaxial connector, which includes a first connector 1 and a second connector 2 inserted into the first connector 1. The first connector 1 can be a male head, and the second connector 2 can be a female head.

[0034] Among them, the first connector 1 includes a first central conductor 11, a first outer conductor 12, a first insulator 13 and a first housing 14 arranged coaxially. The first insulator 13 is installed inside the first housing 14, the first central conductor 11 is installed inside the first insulator 13, and the first outer conductor 12 is also installed inside the first housing 14. The first outer conductor 12 is located at one end of the first insulator 13. Taking the Figure 1 shown position as an example, the first outer conductor 12 is located at the upper end of the first insulator 13.

[0035] The second connector 2 includes a second central conductor 21, a second outer conductor 22, a second insulator 23 and a second housing 24 arranged coaxially. The second insulator 23 is installed inside the second housing 24, the second central conductor 21 is installed inside the second insulator 23, and the second outer conductor 22 is also installed inside the second housing 24. The second outer conductor 22 is located at one end of the second insulator 23. Taking the Figure 2 shown position as an example, the second outer conductor 22 is located at the upper end of the second insulator 23.

[0036] The first central conductor 11 can be a pin, and the second central conductor 21 can be a jack. One end of the first central conductor 11 and the second central conductor 21 are inserted and matched. The first insulator 13 and the second insulator 23, as the supporting media of the first central conductor 11 and the second central conductor 21 respectively, are both made of ceramic materials.

[0037] When the radio frequency coaxial connector works, it is connected to an external cable through the first connector 1 or the second connector 2. Microwaves are transmitted through the coaxial structure composed of the housing, the outer conductor and the central conductor. The microwaves are transmitted from the central conductor to the connecting cylinder 6 and then introduced into the antenna 7 to achieve the purpose of transmitting microwaves. The utility model uses ceramic as the supporting medium of the central conductor. The ceramic has good high-temperature resistance and can withstand a power transmission of 3 kW. At the same time, the ceramic medium has the advantages of high temperature resistance, high precision and not easy to deform, which can effectively reduce the pollution and structural damage caused by the breakage of the medium under high-power transmission load.

[0038] Embodiment 2:

[0039] See the appendix Figures 1 to 7. On the basis of Embodiment 1, in this embodiment, the first insulator 13 and the second insulator 23 can be ceramic dielectrics with the same structure. Specifically, both the first insulator 13 and the second insulator 23 are hollow structures, and the hollow structure can improve the heat dissipation efficiency. In one possible implementation, the hollow structure is a number of through grooves provided on the first insulator 13 and the second insulator 23 and extending along their axial directions. It can be understood that the specific number of through grooves is not limited in this embodiment. As Figure 4 shown, the number of through grooves can be set to three, and the three through grooves are evenly distributed along the circumferential direction of the first insulator 13 or the second insulator 23 on the first insulator 13 or the second insulator 23.

[0040] Embodiment 3:

[0041] See the appendix Figures 1 to 7 . On the basis of Embodiment 2, as Figure 1 and Figure 2 shown, a connecting nut 15 is sleeved on the outer periphery of the first housing, and the connecting nut 15 is located at one end close to the second connector 2; correspondingly, an internal thread 25 is provided on the outer periphery of the second housing, and the internal thread 25 is located at one end close to the first connector 1; the internal thread 25 is threadedly connected with the connecting nut 15. After the first center conductor 11 and the second center conductor 21 are inserted, the first connector 1 and the second connector 2 can be fixed by the threaded connection between the internal thread 25 and the connecting nut 15 to prevent detachment.

[0042] In this embodiment, a first limiting groove 16 is further provided between the outer periphery of the first outer conductor 12 and the connecting nut 15, and the first limiting groove 16 is inserted and matched with one side of the second outer shell 24 close to the first connector 1. A second limiting groove 26 is provided between the outer periphery of the second outer conductor 22 and the second outer shell 24, and the second limiting groove 26 is inserted and matched with one side of the first outer conductor 12 close to the second connector 2.

[0043] When the first connector 1 and the second connector 2 are inserted into each other, the opposite ends of the first center conductor 11 and the second center conductor 21 are inserted and matched. At the same time, one side of the second outer shell 24 close to the first connector 1 extends into the first limiting groove 16, and one side of the first outer conductor 12 close to the second connector 2 extends into the second limiting groove 26, and finally they are fixed by the threaded connection between the internal thread 25 and the connecting nut 15.

[0044] In this embodiment, a sealing ring 3 is provided at the connection of the first connector 1 and the second connector 2. Specifically, the sealing ring 3 can be provided in the first limiting groove 16.

[0045] In this embodiment, flanges 4 are provided on the outer perimeters of the first housing 14 and the second housing 24. Flange holes for connection are provided on the flanges 4. The connection with the cavity wall 5 can be achieved through the flanges 4, and the flanges 4 and the cavity wall 5 can be connected by bolts.

[0046] By establishing a simulation model, the high-power radio frequency coaxial connector provided by the present utility model is simulated. The simulation results are as Figure 6 and Figure 7 shown, where Figure 6 is the result of the reflection coefficient S11 of the high-power radio frequency coaxial connector, Figure 7 and

[0047] is the field strength distribution of the high-power radio frequency coaxial connector. It can be seen that the high-power radio frequency coaxial connector provided by the present utility model has good microwave transmission efficiency.

[0048] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model.

[0048] In the description of the present utility model, "the first feature" and "the second feature" may include one or more of such features.

[0049] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0050] In the description of the present utility model, that the first feature is "above" or "below" the second feature may include direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through additional features therebetween.

[0051] In the description of the present utility model, that the first feature is "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature.

[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] The foregoing are only the preferred embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall equally be included in the patent protection scope of the present utility model.

Claims

1. A high-power radio frequency coaxial connector, characterized in that: include: A first connector (1), and a second connector (2) plugged into the first connector (1); The first connector (1) comprises a first central conductor (11), a first outer conductor (12), a first insulator (13) and a first outer shell (14) which are coaxially arranged; the first insulator (13) is installed inside the first outer shell (14), and the first central conductor (11) is installed inside the first insulator (13); the first outer conductor (12) is also installed inside the first outer shell (14), and the first outer conductor (12) is located at one end of the first insulator (13); The second connector (2) comprises a coaxially arranged second central conductor (21), a second outer conductor (22), a second insulator (23) and a second outer shell (24); the second insulator (23) is installed inside the second outer shell (24), and the second central conductor (21) is installed inside the second insulator (23); the second outer conductor (22) is also installed inside the second outer shell (24), and the second outer conductor (22) is located at one end of the second insulator (23); The first center conductor (11) and the second center conductor (21) are plugged into and matched with each other at opposite ends; The first insulator (13) and the second insulator (23) are both made of ceramic materials.

2. A high power radio frequency coaxial connector according to claim 1, characterized in that: The first insulator (13) and the second insulator (23) are both hollow structures.

3. A high power radio frequency coaxial connector according to claim 2, characterized in that: The first insulator (13) and the second insulator (23) are both provided with a plurality of through slots extending along their axial directions.

4. A high-power radio frequency coaxial connector according to claim 3, characterized in that: The number of the through slots is set to three, and the three through slots are evenly distributed along the circumference of the first insulator (13) or the second insulator (23).

5. The high-power radio frequency coaxial connector according to claim 1, characterized in that: A connecting nut (15) is sleeved on the outer periphery of the first outer shell (14), and the connecting nut (15) is located at one end close to the second connector (2); an internal thread (25) is provided on the outer periphery of the second outer shell (24), and the internal thread (25) is located at one end close to the first connector (1); the internal thread (25) is threadedly connected to the connecting nut (15).

6. A high power radio frequency coaxial connector according to claim 5, characterized in that: A first limiting groove (16) is provided between the outer periphery of the first outer conductor (12) and the connecting nut (15), and the first limiting groove (16) is plug-fitted with a side of the second housing (24) close to the first connector (1).

7. A high power radio frequency coaxial connector according to claim 5, characterized in that: A second limiting groove (26) is provided between the outer periphery of the second outer conductor (22) and the second outer shell (24), and the second limiting groove (26) is plug-fitted to a side of the first outer conductor (12) close to the second connector (2).

8. The high-power radio frequency coaxial connector according to claim 1, characterized in that: A sealing ring (3) is provided at the connection between the first connector (1) and the second connector (2).

9. The high-power radio frequency coaxial connector according to claim 1, characterized in that: The outer circumferences of the first shell (14) and the second shell (24) are both provided with flanges (4), and the flanges (4) are provided with flange holes for connection.

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