A through capacitive and high frequency connector

Abstract

This application discloses a through-type capacitor and a high-frequency connector. The through-type capacitor is used in a high-frequency connector with an internal conductive tube. Its structure includes: a concave outer shell, a dielectric layer, an inner tube, and a retaining structure. The concave outer shell includes an annular bottom shell and vertical sidewalls perpendicular to the annular bottom shell. The dielectric layer is disposed within the concave outer shell, with a through hole formed at its axial center. The first surface of the dielectric layer abuts against the concave outer shell. The inner tube is disposed within the through hole of the dielectric layer and abuts against a second surface of the dielectric layer for electrical connection with the conductive tube. The retaining structure is disposed on the vertical sidewall of the concave outer shell and / or within the inner tube to increase the contact capability between the through-type capacitor and the high-frequency connector. This application achieves reliable connection of the through-type capacitor in the high-frequency connector through the retaining structure, reducing the difficulty of electrical connection and the risk of damage during installation.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency signal communication technology, and in particular to a through-type capacitor and a high-frequency connector. Background Technology

[0002] In the field of signal communication technology, through-type capacitors have good capacitance characteristics and can effectively bypass or filter high-frequency interference signals. Therefore, through-type capacitors are widely used in high-frequency filtering, power supply decoupling, magnetic field suppression and other scenarios, and are used to shield high-frequency signals from power supply noise leakage during signal communication.

[0003] In existing technologies, conductive fasteners or matching ring-shaped spring clips are typically installed at both ends of the through-capacitor to fix it in a designated position on the conductive rod. Because the through-capacitor and the fastener are installed separately, they are prone to loosening due to shaking and other electronic components during use, leading to poor contact, fluctuations in contact impedance, and affecting high-frequency signal transmission performance.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a through-type capacitor and a high-frequency connector to solve the problem that the through-type capacitor in the prior art is easy to loosen during use, and poor contact will affect the signal transmission performance.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a through-type capacitor for use in a high-frequency connector with an internal conductive tube. The conductive tube is disposed in an accommodating space inside the housing of the high-frequency connector. It includes: a concave outer shell, a dielectric layer, an inner tube, and a retaining structure; wherein... The concave outer shell includes an annular bottom shell and vertical sidewalls perpendicular to the annular bottom shell; The dielectric layer is disposed in the concave shell, and a through hole is formed at the axial position. The first surface of the dielectric layer abuts against the concave shell. The inner tube is disposed in the through hole of the dielectric layer and abuts against the second surface of the dielectric layer for electrical connection with the conductive tube; The retaining structure is disposed on the vertical side wall of the concave housing and / or in the inner tube, for increasing the contact capability between the through capacitor and the high-frequency connector.

[0007] In a further embodiment of this invention, the retaining structure is disposed on the vertical sidewall of the concave shell, and the retaining structure includes at least one outwardly protruding curved spring piece, the radial protrusion of which is 0.1-0.5mm.

[0008] A further feature of this invention is that the retaining structure is disposed within the inner tube, and the retaining structure is a conical claw spring, which includes an inner tube fixing part and a conductive tube clamping part; wherein, The retaining structure is disposed within the inner tube, and the retaining structure is a conical claw spring, which includes an inner tube fixing part and a conductive tube clamping part; wherein... The inner tube fixing part of the first inner diameter is fixedly connected to the inner wall of the inner tube; The conductive tube clamping portion narrows from the first inner diameter to the second inner diameter, the second inner diameter being smaller than the first inner diameter and the second inner diameter being smaller than the outer diameter of the conductive tube.

[0009] In a further embodiment of this invention, the through-type capacitor also includes a sealing adhesive layer, which is located above the dielectric layer and is used to fix the dielectric layer and the concave outer shell, and the dielectric layer and the inner tube.

[0010] In a further embodiment of this invention, the sealing adhesive layer is at least one of a thermosetting epoxy resin adhesive layer, a silicone adhesive layer, a polyurethane adhesive layer, or an acrylic adhesive layer.

[0011] In a further embodiment of this invention, the inner tube has an inner tube protrusion that abuts against the second surface of the dielectric layer; a first conductive layer is disposed on the first surface of the dielectric layer, and a second conductive layer is disposed on the second surface of the dielectric layer; the first conductive layer is fixedly connected to the annular bottom shell of the concave outer shell, and the second conductive layer is fixedly connected to the inner tube protrusion of the inner tube.

[0012] In a further embodiment of this invention, the concave outer shell is made of one of the following materials: 65MN elastic steel, phosphor bronze, or beryllium copper.

[0013] In a further embodiment of this invention, the annular bottom shell is either a circular annular bottom shell or a polygonal annular bottom shell.

[0014] In a further embodiment of this invention, the conductive tube clamping part is a cantilever beam claw spring with equal spacing, and the end of the cantilever beam claw spring is inclined towards the axis of the inner tube to form a constricted structure.

[0015] Based on the same inventive concept, this application also provides a high-frequency connector, comprising: at least one through-type capacitor, a conductive tube, and a housing, wherein the through-type capacitor and the conductive tube are disposed in an accommodating space inside the housing; wherein, The conductive tube is connected to an external high-frequency line for transmitting high-frequency signals; The through-type capacitor is sleeved on the conductive tube.

[0016] This application discloses a through-type capacitor and a high-frequency connector. The through-type capacitor is used in a high-frequency connector with an internal conductive tube. The conductive tube is disposed within an accommodating space inside the housing of the high-frequency connector. The through-type capacitor includes a concave outer shell, a dielectric layer, an inner tube, and a retaining structure. The concave outer shell includes an annular bottom shell and vertical sidewalls perpendicular to the annular bottom shell. The dielectric layer is disposed within the concave outer shell, with a through hole formed at its axial center. A first surface of the dielectric layer abuts against the concave outer shell. The inner tube is disposed within the through hole of the dielectric layer and abuts against a second surface of the dielectric layer for electrical connection with the conductive tube. The retaining structure is disposed on the vertical sidewall of the concave outer shell and / or within the inner tube to increase the contact capability between the through-type capacitor and the high-frequency connector. The through-type capacitor of this application can be self-fixed to the conductive tube through its built-in retaining structure, without the need for additional or modified fixing devices, thus improving high-frequency signal shielding performance and the reliability of the fixed connection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the through-type capacitor in some preferred embodiments of this utility model.

[0019] Figure 2 This is a schematic diagram of a through-type capacitor structure in a further embodiment of some preferred embodiments of this utility model.

[0020] Figure 3 This is a three-dimensional assembly drawing of the through-type capacitor in this utility model.

[0021] Figure 4 This is a top view of the through-type capacitor in this utility model.

[0022] Figure 5This is a schematic diagram of the high-frequency connector in this utility model.

[0023] The following are the markings in the attached diagram: 1. Through-type capacitor; 11. Concave outer shell; 111. Annular bottom shell; 112. Vertical side wall; 113. Curved spring; 12. Dielectric layer; 121. First surface; 122. Second surface; 13. Conical claw spring; 14. Inner tube; 141. Inner tube protrusion; 15. Sealing adhesive layer; 2. Conductive tube; 3. Shell; 4. F-type connector; 5. Insulating base; 6. Magnetic ring; 61. First magnetic ring; 62. Second magnetic ring. Detailed Implementation

[0024] This utility model provides a through-type capacitor and a high-frequency connector. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit this utility model.

[0025] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0026] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0027] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] The inventors discovered that existing through-type capacitors, lacking their own electrodes, require the addition of a fixing structure as an external electrode before use during production. For example, the through-type capacitor is fitted onto a conductive rod or tube, with the fixing structure coaxially fitted onto the second and / or first surfaces of the capacitor. Because the sliding resistance between the fixing structure and the conductive rod or tube is greater than the sliding resistance between the through-type capacitor and the conductive rod or tube, the through-type capacitor can be fixed at the corresponding position on the conductive rod or tube. However, the fixing structure is conductive. When the fixing structure is connected to the positive and negative plates of the through-type capacitor to form the capacitor's electrodes, the additional parts involved in assembly increase assembly time by 30%. Furthermore, the high-temperature soldering of the solder wire for rigid assembly easily damages the capacitor dielectric, potentially leading to dielectric breakage during assembly and reducing the overall product yield. Additionally, vibration testing revealed that existing split-type fixing components generate slight relative motion during vibration or shaking, causing fluctuations in contact impedance.

[0030] To resolve the above technical issues, please refer to the following: Figure 1 and Figure 4 This utility model provides a through-type capacitor 1 for a high-frequency connector with an internal conductive tube 2. The conductive tube 2 is disposed in an accommodating space inside the housing 3 of the high-frequency connector. It includes: a concave outer shell 11, a dielectric layer 12, an inner tube 14, and a retaining structure. The concave outer shell 11 includes an annular bottom shell 111 and a vertical sidewall 112 perpendicular to the annular bottom shell 111. The vertical sidewall 112 is disposed on the side of the annular bottom shell 111 away from the axis and is used for electrical connection with the housing of the high-frequency connector. The dielectric layer 12 is disposed in the concave outer shell 11. A through hole is formed at the axial position of the dielectric layer 12, and a capacitor structure is formed between the first and second surfaces of the dielectric layer 12, which are disposed opposite to each other. The first surface of the dielectric layer 12 is fixedly connected to the concave outer shell 11. The inner tube 14 is a tubular structure, which is disposed in the through hole of the dielectric layer 12 and abuts against the second surface of the dielectric layer 12. The inner tube 14 is used for electrical connection with the conductive tube. The retaining structure is disposed on the vertical side wall of the concave outer shell 11 and / or in the inner tube 14 to increase the contact force between the through capacitor 1 and the high-frequency connector.

[0031] The annular bottom shell 111 can be a circular or polygonal annular shell; that is, the through-type capacitor can be a circular ring, a square ring, or any polygonal ring, as long as the center or axis of the through-type capacitor has a through hole of any shape that can be fitted onto the conductive tube. The inner tube protrusion 141 abuts against the second surface 122 of the dielectric layer 12; the second surface 122 of the dielectric layer 12 is provided with a first conductive layer, and the first surface 121 of the dielectric layer 12 is provided with a second conductive layer. The first conductive layer is fixedly connected to the concave outer shell 11, and the second conductive layer is fixedly connected to the inner tube protrusion 141 of the inner tube 14. By providing conductive layers, the contact area between the dielectric layer 12 and the outer shell and the inner tube 14 is increased, so that the through-type capacitor 1 has good contact performance.

[0032] The concave outer shell 11 is made of one of the following materials: 65MN elastic steel, phosphor bronze, or beryllium copper. Preferably, the concave outer shell 11 is made of phosphor bronze, which has excellent conductivity. The retaining structure secures the through-type capacitor 1 with an interference fit, preventing it from shaking and loosening after installation. It should be noted that when the retaining structure is located within the inner tube 14, it abuts against the inner surface of the through-type capacitor 1, i.e., the structure within the inner tube. This structure can be a conductive tube, thereby increasing the stability between the inner tube 14 and the conductive tube 2. When the retaining structure is located on the vertical sidewall 112 of the concave outer shell 11, it abuts against the external structure on the outer side of the through-type capacitor 1. When the through-type capacitor 1 is fitted inside the high-frequency connector, the retaining structure abuts against the inner wall of the high-frequency connector housing due to interference fit. At the same time, the friction between the through-type capacitor 1 and the conductive tube 2 or the housing can be increased by screwing it to the conductive rod or conductive tube 2, clamping it, or using a high friction coefficient material.

[0033] When the through-type capacitor 1 is mounted on the high-frequency connector, the concave outer shell 11 of the through-type capacitor 1 serves as the outer electrode, and the inner tube 14 serves as the inner electrode. The retaining structure is distributed on at least one electrode of the capacitor and forms stable contact with the conductive tube providing the conductive path and / or the inner wall of the high-frequency connector. It should be noted that the through-type capacitor 1 in this application has at least one of the retaining structures disposed on the vertical sidewall 112 of the concave outer shell 11 and / or in the inner tube 14, thereby increasing the resistance between the through-type capacitor and the high-frequency connector. When both the concave outer shell 11 and the inner tube 14 are provided with the retaining structure, both the inner and outer electrodes of the through-type capacitor 1 are provided with retaining structures for stable and reliable connection to external circuits, thereby further increasing the stability of the through-type capacitor, enabling convenient installation, reliable contact, and reducing the risk of damage to the capacitor during electrical connection and installation.

[0034] Furthermore, in a further embodiment of a preferred embodiment of this application, the retaining structure is disposed on the vertical sidewall 112 of the concave housing 11. The retaining structure includes at least one outwardly protruding curved spring piece 113, which is used to abut against the housing of the high-frequency connector. Specifically, the curved spring piece 113 is bent away from the axis of the concave housing 11, and the radial distance between the highest point of its bending structure and the reference outer diameter of the concave housing 11 is 0.1~0.5mm, for abutting against the housing 3 of the high-frequency connector. Preferably, there are four curved spring pieces 113, which are arranged sequentially at 90-degree angles apart from the center of the through capacitor 1, thereby fixing the through capacitor 1 from four directions respectively. The through-type capacitor 1 can simultaneously have at least one curved spring piece 113 provided on the vertical side wall 112 of the concave housing 11, and innovatively integrates external elasticity and clamping structure in the spring piece housing and inner tube, forming an interference fit with the connector conductive tube through radial pressure.

[0035] Furthermore, in a further embodiment of a preferred embodiment of this application, the retaining structure is disposed in the inner tube 14, and the retaining structure is a conical claw spring 13, the conical claw spring 13 including an inner tube fixing part and a conductive tube clamping part; wherein, the inner tube fixing part with a first inner diameter r1 is fixedly connected to the inner wall of the inner tube 14; the conductive tube clamping part narrows from the first inner diameter r1 to the second inner diameter r2, the second inner diameter being smaller than the first inner diameter r1, and the second inner diameter r2 being smaller than the outer diameter of the conductive tube 2. The conductive tube clamping part consists of 3 to 8 sets of cantilever beam claw springs evenly distributed circumferentially along the inner tube clamping part, the ends of the cantilever beam claw springs are inclined towards the axis of the inner tube 14 to form a narrowing structure, the cantilever beam claw springs are made of phosphor bronze or beryllium bronze, and are interference-fitted with the conductive tube 2, the interference amount being 0.05-0.2mm.

[0036] It should be noted that the retaining structure in this application can be provided on the facade sidewall 112 or in the inner tube 14, or both the facade sidewall 112 and the inner tube 14 can be provided with retaining structures. In some preferred embodiments of this application, both the inner and outer electrodes of the through capacitor 1 are provided with retaining structures, a curved spring sheet serving as the outer electrode is integrated on the facade sidewall 112, and a conductive tube clamping part serving as the inner electrode is integrated in the inner tube. When the through capacitor 1 is mounted on the conductive tube 2, the cantilever beam claw spring is compressed by the conductive tube 2 and expands radially elastically, generating a continuous contact pressure of at least 0.5N. On the other hand, since the curved spring sheet 113 provided on the concave outer shell 11 has a certain protrusion height, the curved spring sheet 113 is at the maximum width of the through capacitor 1. The curved spring 113 has a compression rebound rate of ≥85%, ensuring an interference fit between the through-type capacitor 1 and the high-frequency connector housing. The elastic deformation of the retaining structure absorbs over 90% of the assembly stress, preventing the dielectric layer from cracking due to rigid pressing during installation. Testing shows that the through-type capacitor 1 in this application has a contact impedance fluctuation of <5%, a dielectric breakage rate of less than 0.1%, and a maximum installation force of 3N; while the traditional structure has a contact impedance fluctuation ≥15%, a dielectric breakage rate of approximately 5.2%, and a maximum installation force of 8N. Therefore, the improved through-type capacitor 1 in this application exhibits superior assembly performance compared to existing through-type capacitors.

[0037] like Figure 2 and Figure 3 As shown, the through-type capacitor 1 further includes a sealing adhesive layer 15, which is located above the dielectric layer 12 and is used to fix the dielectric layer and the concave outer shell 11, and the dielectric layer 12 and the inner tube 14. The sealing adhesive layer 15 is at least one of epoxy resin adhesive, silicone adhesive, polyurethane adhesive, or acrylic adhesive. Preferably, the sealing adhesive layer 15 is an epoxy resin adhesive layer that extends to cover the dielectric layer, forming a moisture-proof and sealed structure. A buffer layer may also be provided between the dielectric layer 12 and the inner tube 14, and between the dielectric layer and the concave outer shell. The buffer layer is a nano-modified epoxy resin layer formed after curing, with a dielectric constant ≥4.2 and good dielectric properties.

[0038] Based on the same utility model concept, such as Figure 5As shown, this application also provides a high-frequency connector, which includes: at least one through-type capacitor 1, a conductive tube 2 and a housing 3 as described above, wherein the through-type capacitor 1 and the conductive tube 2 are disposed in an accommodating space inside the housing 3; wherein the conductive tube 2 is connected to an external high-frequency line for transmitting high-frequency signals; and the through-type capacitor 1 is sleeved on the conductive tube. It may further include: an F-type connector 4, an insulating base 5, and at least one magnetic ring 6, wherein the through-type capacitor 1, the F-type connector 4, and the magnetic ring 6 are coaxially connected to the conductive tube 2; wherein, a plurality of the F-type connectors are disposed at both ends of the housing, the F-type connectors are used as high-frequency signal input / output interfaces and are connected to external high-frequency lines; the insulating base 5 is connected to the F-type connector 4, used to hold the F-type connector 4, and used to isolate the transmission path of high-frequency signals in the conductive tube 2; both ends of the conductive tube 2 are respectively connected to the F-type connectors 4 on both sides of the housing 3 for transmitting high-frequency signals; at least one magnetic ring 6 and at least one through-type capacitor 1 are sequentially sleeved on the conductive tube 2, one end of the through-type capacitor 1 is electrically connected to the conductive tube 2 for shielding signal interference. The structure of the through-type capacitor 1 in the high-frequency connector is as described in the above preferred embodiments, and will not be repeated here.

[0039] In summary, this utility model relates to the field of high-frequency communication equipment technology, and in particular to a through-type capacitor and high-frequency connector with an internal and external bidirectional elastic contact system, suitable for scenarios such as cable TV signal or video signal transmission, 5G base stations, and satellite communication equipment requiring reliable isolation and shielding connections. Specifically, this application discloses a through-type capacitor and a high-frequency connector. The through-type capacitor is used in a high-frequency connector with an internal conductive tube. The conductive tube is disposed in an accommodating space inside the housing of the high-frequency connector, and includes: a concave outer shell, a dielectric layer, an inner tube, and a retaining structure. The concave outer shell includes an annular bottom shell and a vertical sidewall perpendicular to the annular bottom shell. The dielectric layer is disposed in the concave outer shell, with a through hole formed at the axial center, and the first surface of the dielectric layer abuts against the concave outer shell. The inner tube is disposed in the through hole of the dielectric layer and abuts against the second surface of the dielectric layer for electrical connection with the conductive tube. The retaining structure is disposed on the vertical sidewall of the concave outer shell and / or in the inner tube to increase the contact capability between the through-type capacitor and the high-frequency connector. The through-type capacitor of this application can be self-fixed to the conductive tube through its built-in holding structure, without the need for additional or modified fixing devices, thus improving the high-frequency signal shielding performance and the reliability of the fixed connection. The through-type capacitor and high-frequency connector provided in this invention have the following beneficial effects: The through-type capacitor adopts an integrated outer spring and inner clamping design. The outer surface of the outer shell of the through-type capacitor has a curved spring, and the inner surface of the inner tube has a retaining structure. The curved spring and retaining structure are made of elastic material. The through-type capacitor achieves simultaneous fixation of the outer and inner surfaces through the elastic material. During assembly, the through-type capacitor contacts the shell and the conductive tube simultaneously through the outer shell and the retaining structure. It innovatively integrates the outer elasticity and clamping structure in the spring shell and the inner tube. Through radial pressure, it forms an interference fit with the connector conductive tube, ensuring that the through-type capacitor is fixedly connected on the conductive tube.

[0040] The integrated encapsulation of the retaining structure and curved spring contact with the through-type capacitor eliminates the need for additional curved spring contact installation, simplifying assembly, improving assembly efficiency, and reducing product processing costs and required space. It enables self-fixing of the through-type capacitor on the conductive tube, effectively solving the contact impedance fluctuation problem in rapid installation and high-frequency signal transmission, ensuring the connector maintains stable capacitance characteristics and signal integrity even under vibration.

[0041] The retaining structure and curved spring serve as electrodes at both ends of the through-type capacitor, connecting to the external circuit. Through integrated packaging, the through-type capacitor makes reliable contact with the electrodes, realizing the function of the capacitor, ensuring shielding performance and the reliability of the fixed connection, and extending service life.

[0042] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A through-type capacitor for use in a high-frequency connector having an internal conductive tube, the conductive tube being disposed within an accommodating space inside the housing of the high-frequency connector, characterized in that, include: A concave outer shell, a dielectric layer, an inner tube, and a retaining structure; wherein, The concave outer shell includes an annular bottom shell and vertical sidewalls perpendicular to the annular bottom shell; The dielectric layer is disposed in the concave shell, and a through hole is formed at the axial position. The first surface of the dielectric layer abuts against the concave shell. The inner tube is disposed in the through hole of the dielectric layer and abuts against the second surface of the dielectric layer for electrical connection with the conductive tube; The retaining structure is disposed on the vertical side wall of the concave housing and / or in the inner tube, for increasing the contact capability between the through capacitor and the high-frequency connector.

2. The through-type capacitor according to claim 1, characterized in that, The retaining structure is disposed on the vertical sidewall of the concave shell, and the retaining structure includes at least one outwardly protruding curved spring piece, the radial protrusion of which is 0.1-0.5mm.

3. The through-type capacitor according to claim 1, characterized in that, The retaining structure is disposed within the inner tube, and the retaining structure is a conical claw spring, which includes an inner tube fixing part and a conductive tube clamping part; wherein... The inner tube fixing part of the first inner diameter is fixedly connected to the inner wall of the inner tube; The conductive tube clamping portion narrows from the first inner diameter to the second inner diameter, the second inner diameter being smaller than the first inner diameter and smaller than the outer diameter of the conductive tube.

4. The through-type capacitor according to claim 1, characterized in that, The through-type capacitor also includes a sealing adhesive layer, which is located above the dielectric layer and is used to fix the dielectric layer and the concave outer shell, and the dielectric layer and the inner tube.

5. The through-type capacitor according to claim 4, characterized in that, The sealing adhesive layer is at least one of thermosetting epoxy resin adhesive layer, silicone adhesive layer, polyurethane adhesive layer or acrylic adhesive layer.

6. The through-type capacitor according to claim 1, characterized in that, The inner tube has an inner tube protrusion that abuts against the second surface of the dielectric layer; the first surface of the dielectric layer is provided with a first conductive layer, and the second surface of the dielectric layer is provided with a second conductive layer; the first conductive layer is fixedly connected to the annular bottom shell of the concave outer shell, and the second conductive layer is fixedly connected to the inner tube protrusion of the inner tube.

7. The through-type capacitor according to claim 1, characterized in that, The concave shell is made of one of the following materials: 65MN elastic steel, phosphor bronze, or beryllium copper.

8. The through-type capacitor according to claim 1, characterized in that, The annular bottom shell can be a circular annular bottom shell or a polygonal annular bottom shell.

9. The through-type capacitor according to claim 3, characterized in that, The conductive tube clamping part is a cantilever beam claw spring with equal spacing, and the end of the cantilever beam claw spring is inclined towards the axis of the inner tube to form a constriction structure.

10. A high-frequency connector, characterized in that, include: At least one through-type capacitor, conductive tube, and housing as described in any one of claims 1-9, wherein the through-type capacitor and the conductive tube are coaxially connected; wherein, The conductive tube is connected to an external high-frequency line for transmitting high-frequency signals; The through-type capacitor is sleeved on the conductive tube.

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