An adjustable coupling structure and communication front-end device component

Abstract

An adjustable coupling structure and a communication front-end device component. The present invention is provided with a metal coupling plate, which is arranged between two resonant rods without electrical contact; an adjusting screw is added between the metal coupling plate and the resonant rod, and each adjusting screw is parallel to its adjacent resonant rod. Each adjusting screw is fixed by an adjusting nut and its height relative to the metal coupling plate and / or the resonant rod is adjusted. Due to such a setting, the adjusting screw of the present invention can be coupled with the metal coupling plate and the resonant rod at the same time to achieve the adjustment of the cross-coupling strength in the signal channel of the communication front-end device component. In the present invention, the adjusting screw is coupled with the metal coupling plate and the resonant rod at the same time to achieve the purpose of changing the coupling amount between the metal coupling plate and the resonant rod, which can greatly improve the coupling strength between the coupling component and the resonant rod. The present invention has a simple structure, strong operability, good batch consistency and low implementation cost.

Description

Technical Field

[0001] The invention relates to a microwave communication device, in particular to an adjustable coupling structure and a communication front-end device component. Background Art

[0002] Components such as duplexers, combiners, and filters are widely used in front-end equipment in the field of communications, and the quality of their product performance will directly affect the overall communication quality. In the product design process of such communication front-end equipment components, it is often necessary to use non-contact coupling structures such as coupling elements and resonant rods to achieve technical indicators such as capacitive cross-coupling and tap coupling.

[0003] However, existing non-contact coupling structures usually use metal sheets of specific sizes to directly couple with the resonant rod. In this coupling structure, when the metal coupling element or metal sheet is coupled with the resonant rod, the coupling amount is directly determined by the size of the metal coupling element or metal sheet material itself. Once the metal coupling element or metal sheet is assembled in the communication front-end device component, its coupling area relative to the resonant rod is fixed, and the coupling area is directly related to the coupling strength. In other words, the coupling strength of the existing metal coupling element or metal sheet with the resonant rod is a fixed value. If the coupling amount cannot meet the requirements, the coupling structure needs to be reprocessed and replaced, which has low production efficiency and poor processing consistency.

[0004] However, due to the inevitable processing errors of metal coupling elements or metal sheet materials during the processing, the actual coupling strength of each product is often different due to the processing errors of the materials during mass production of some high-demand products. In particular, when the processing errors of metal coupling elements or metal sheets cause the product to fail to meet the actual required coupling amount or coupling strength, the existing non-contact coupling structure cannot compensate for it. This will result in product indicators failing to meet the standards, poor product performance, and poor consistency of parameters of mass-produced products. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an adjustable coupling structure and a communication front-end device component. The present invention adds an adjustment screw between the metal coupling sheet and the resonance rod, and couples with the metal coupling sheet and the resonance rod at the same time to adjust the cross-coupling strength in the signal channel of the communication front-end device component. The present invention specifically adopts the following technical solutions.

[0006] Firstly, to achieve the above-mentioned purpose, an adjustable coupling structure is proposed, which is arranged in the middle of the signal channel inside the communication front-end device component, including: a metal coupling plate, which is arranged between two resonant rods without electrical contact; an adjusting screw, including at least two, wherein the adjusting screws are respectively arranged between the metal coupling plate and each resonant rod, and each adjusting screw is respectively parallel to its adjacent resonant rod; an adjusting nut, used to fix and adjust the height of the adjusting screw relative to the metal coupling plate and / or the resonant rod.

[0007] Optionally, in the above-mentioned adjustable coupling structure, both ends of the metal coupling sheet are respectively provided with structures opening toward the resonance rod and the adjustment screw, and both ends of the metal coupling sheet are at least partially close to the side walls of the resonance rod and the adjustment screw.

[0008] Optionally, in the above-mentioned adjustable coupling structure, the metal coupling sheet is wrench-shaped, I-shaped, or has slots at both ends that at least partially surround the resonance rod and the adjustment screw, and the thickness of the metal coupling sheet is determined according to the coupling strength adjustment range.

[0009] Optionally, the above-mentioned adjustable coupling structure further includes an insulating fixing component, which is arranged in the middle of the metal coupling sheet and is used to fix the metal coupling sheet between the adjusting screws without electrical contact.

[0010] Optionally, in the above-mentioned adjustable coupling structure, the insulating fixing component includes: an insulating screw and an insulating gasket; the middle or both ends of the metal coupling plate are also provided with a through hole matching the diameter of the insulating screw, the insulating screw passes through the through hole, and the metal coupling plate is mounted between the adjusting screws without electrical contact through the insulating gasket.

[0011] Optionally, in the above-mentioned adjustable coupling structure, the metal coupling plate is installed to be close to the resonance rod, and the adjusting screw rod is close to the height of the metal coupling plate.

[0012] At the same time, in order to achieve the above-mentioned purpose, the present invention also provides a communication front-end equipment element, including: a cavity for receiving, accommodating and processing microwave signals; a cover for closing the cavity; wherein an adjustable coupling structure as described above is arranged in the middle of the signal channel inside the cavity.

[0013] Optionally, among the above-mentioned communication front-end equipment components, the communication front-end equipment components include but are not limited to: a duplexer, a combiner, and a filter.

[0014] Optionally, in the above-mentioned communication front-end equipment components, the outer diameter of the adjusting screw is determined according to the coupling strength adjustment range; the inner diameter of the adjusting nut matches the outer diameter of the adjusting screw, the adjusting nut is arranged on the cover plate, and an adjustment hole matching the outer diameter of the adjusting screw is also arranged on the cover plate at a position corresponding to the lower end surface of the adjusting nut, the upper end of the adjusting screw is fixed to the cover plate by the adjusting nut, and the lower end of the adjusting screw passes through the adjustment hole and extends between the metal coupling plate and the resonance rod in the cavity, and maintains no electrical contact with the metal coupling plate and the resonance rod.

[0015] Beneficial Effects The present invention is provided with a metal coupling sheet, which is arranged between two resonant rods without electrical contact, and an adjusting screw is added between the metal coupling sheet and the resonant rod. Each adjusting screw is parallel to the resonant rod adjacent thereto, and each adjusting screw is fixed by an adjusting nut and its height relative to the metal coupling sheet and / or the resonant rod is adjusted. Due to such a setting, the adjusting screw of the present invention can be coupled with the metal coupling sheet and the resonant rod at the same time, so as to change the coupling amount between the metal coupling sheet and the resonant rod, especially to adjust the cross-coupling strength in the signal channel of the communication front-end device component.

[0016] The present invention meets the coupling requirement by adjusting the depth of the adjusting screw. It can effectively compensate for material processing errors and design errors, and has a simple structure and strong operability. The present invention is applied to communication front-end equipment components. After processing and finalization, when the product indicators are detected to fail to meet the design requirements, there is no need to replace the installed materials. The coupling strength can be adjusted by increasing the depth of the adjusting screw, thereby meeting the product requirements and assisting the coupling between the coupling plate and the resonant rod. Products using the present invention have higher parameter consistency and higher production efficiency.

[0017] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 is a top view of a communication front-end device component of the present invention;

[0019] Figure 2 is a cross-sectional view of a communication front-end device component of the present invention;

[0020] Figure 3 It is a schematic diagram of an adjustable coupling structure in a communication front-end device component of the present invention;

[0021] In the figure, 1 represents a metal coupling plate, 2 represents a resonant rod, 3 represents an insulating screw, 4 represents an insulating gasket, 5 represents a cavity, 6 represents a cover plate, 7 represents a cover plate mounting screw, 8 represents a joint, 9 represents a joint mounting screw, 10 represents an adjusting screw, 11 represents a resonant rod mounting screw, and 12 represents an adjusting nut. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] 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 generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0024] The meaning of "and / or" in the present invention means that both the cases where each exists alone or both exist at the same time are included.

[0025] The meaning of "inside" and "outside" in the present invention refers to the direction pointing to the inside of the cavity relative to the communication front-end device component itself, and the direction opposite to the inside of the cavity is inside, and the opposite is outside; it is not a specific limitation on the device mechanism of the present invention.

[0026] The term “connection” as used in the present invention may mean a direct connection between elements or an indirect connection between elements via other elements.

[0027] The meanings of "up" and "down" in the present invention refer to the direction from the bottom of the cavity of the communication front-end device component to the cover plate as up, and the direction from the cover plate to the bottom of the cavity as down, rather than a specific limitation on the device mechanism of the present invention.

[0028] The adjustable coupling structure provided by the present invention can be used for communication front-end equipment components such as duplexers, combiners, filters, etc.

[0029] refer to Figure 1, which is a top view of a communication front-end device element according to the present invention, comprising: a cavity 5, a side wall of which is provided with a connector 8, for receiving a microwave signal through the connector 8 to enter the cavity, a resonant rod 2 is provided in the cavity near the connector 8, the microwave signal in the cavity acts on the structure contained in the cavity to process the microwave signal, and then outputs the processed microwave signal through another connector 8;

[0030] A cover plate 6, used to close the cavity 5;

[0031] A signal channel is formed between the resonant rods 2 inside the cavity 5, and an adjustable coupling structure is arranged in the middle of the signal channel. The adjustable coupling structure includes: an adjusting screw 10 and a metal coupling sheet 1;

[0032] A metal coupling sheet 1 is arranged between two resonant rods 2 without electrical contact, the metal coupling sheet is perpendicular to the resonant rods, and is used to achieve cross coupling;

[0033] The adjusting screws 10 include at least two adjusting screws 10, which are respectively arranged between the metal coupling sheet 1 and the resonance rods 2 at both ends thereof, and each adjusting screw 10 is respectively parallel to its adjacent resonance rod 2;

[0034] The adjusting nut 12 is used to fix and adjust the height of the adjusting screw 10 relative to the metal coupling sheet 1 and / or the resonance rod 2 .

[0035] refer to Figure 2 In the above coupling adjustment structure: the resonant rod can be set as a tubular structure with an upper opening. It can be fixed to the bottom of the cavity 5 by a resonant rod mounting screw 11 set at the lower bottom, and an adjusting screw extending into the opening can be further set at the upper opening to further adjust the product index parameters by the depth of the adjusting screw.

[0036] refer to Figure 3 As shown, in a typical implementation, the middle portion of the metal coupling sheet 1 can be set to be a long strip, and the two ends of the metal coupling sheet 1 are respectively provided with structures that open toward the resonance rod 2 and the adjusting screw 10, and the two ends of the metal coupling sheet 1 are at least partially close to the side walls of the resonance rod 2 and the adjusting screw 10, and the plane of the metal coupling sheet 1 is kept perpendicular to the resonance rod 2 and the adjusting screw 10. Specifically, the plane structure of the metal coupling sheet 1 can be set as follows Figure 3 The wrench shape shown may also be similarly set to an I-shape or have slots at both ends that at least partially surround the resonance rod 2 and the adjustment screw 10. The thickness of the metal coupling sheet 1 is determined according to the coupling strength adjustment range.

[0037] The above-mentioned metal coupling sheet 1 is fixed by an insulating fixing assembly. The insulating fixing assembly includes: an insulating screw 3 and an insulating gasket 4, which are arranged in the middle of the metal coupling sheet 1 and are used to fix the metal coupling sheet 1 between the adjusting screws 10 without electrical contact. In one implementation, the middle of the metal coupling sheet 1 is also provided with a through hole matching the diameter of the insulating screw 3, and the insulating screw 3 passes through the through hole, and the metal coupling sheet 1 is erected on the upper end surface of the fixing rib between the adjusting screws 10 without electrical contact through the insulating gasket 4. The erection height is approximately at the middle height of the resonant rod 2.

[0038] The outer diameter of the adjusting screw 10 is determined according to the coupling strength adjustment range; its length can at least extend from the cover plate 6 to the inside of the cavity and reach a height close to the metal coupling sheet 1. Specifically, it can be fixed and the length of its extension into the cavity can be adjusted by the adjusting nut 12 arranged above the cover plate 6: the inner diameter of the adjusting nut 12 matches the outer diameter of the adjusting screw 10, the adjusting nut 12 is arranged on the cover plate 6, and the position corresponding to the lower end surface of the adjusting nut 12 on the cover plate 6 is also provided with an adjusting hole matching the outer diameter of the adjusting screw 10, the upper end of the adjusting screw 10 is fixed to the cover plate 6 by the adjusting nut 12, and the lower end of the adjusting screw 10 passes through the adjusting hole and extends between the metal coupling sheet 1 and the resonance rod 2 in the cavity 5, and maintains no electrical contact with the metal coupling sheet 1 and the resonance rod 2. After assembly, if the component parameters do not meet the design requirements, the adjusting screw 10 can be screwed to rotate it upward or downward relative to the cover plate, thereby adjusting the coupling strength. Therefore, the present invention can increase or decrease the coupling area between the coupling component and the resonant rod and the adjustable range of the coupling strength, and provide a simple and effective coupling strength adjustment method after the materials are assembled.

[0039] Therefore, the present invention can adjust the coupling strength between the resonant rod and the metal coupling sheet by adjusting the depth of the screw rod. The deeper the screw rod is adjusted, the greater the coupling strength.

[0040] In a more specific implementation, the communication front-end device element has four resonant rods 2 disposed inside its cavity 5, two of which are disposed near the joint 8 of the cavity side wall, and the other two are away from the joint. An isolation rib is also disposed between the resonant rods 2 near the two joints 8, and the isolation rib extends from a side wall of the cavity 5 where the joint is disposed to the middle of the cavity 5 and is provided with a bending angle, thereby dividing the cavity 5 into two chambers. The insulating fixing assembly is supported by the fixing rib and is disposed close to the bending angle of the isolation rib, fixing the metal coupling sheet 1 between the two chambers without electrical contact, and keeping the connecting line between the middle of the metal coupling sheet 1 and the adjusting screws 10 disposed at both ends of the metal coupling sheet 1 parallel to the extension direction of the bending angle. As a result, the two ends of the metal coupling sheet 1 extend to the diagonal sides of the cavity respectively, and partially surround the two resonant rods 2 disposed at the two diagonal sides. An adjusting screw 10 extending downward from the cover plate is arranged in a gap formed between two diagonal resonant rods 2 and the end of the metal coupling plate 1 .

[0041] Therefore, the present invention performs non-contact coupling through the tubular resonant rod and the metal coupling sheet arranged perpendicularly thereto, and adds an adjusting screw at a local position between the resonant rod and the metal coupling sheet. In this way, the metal coupling sheet can be directly coupled to the resonant rod, and the metal coupling sheet can also be coupled to the adjusting screw, so as to achieve coupling between the adjusting screw and the resonant rod, greatly increasing the adjustable range of the coupling area and the coupling strength, and accurately adjusting the coupling strength.

[0042] Specifically, the above-mentioned adjustable coupling structure includes a resonant rod, an adjusting screw and a metal coupling plate that is non-contact coupled with the resonant rod; the resonant rod includes a resonant main rod and a lower bottom, and the lower bottom of the resonant rod is fixed to the bottom of the cavity 5 by a resonant rod mounting screw 11; the metal coupling plate is perpendicular to the resonant main rod and is relatively fixed to the resonant rod through an insulating fixing component; the adjusting screw is between the resonant rod and the metal coupling plate.

[0043] The resonant main rod may be a solid or hollow round rod, square rod, triangular rod, etc. Generally, it is preferred that the resonant main rod adopts a tubular structure with an open upper end. An adjusting screw may be provided at the pipe opening directly above the resonant rod, which extends into the inner hole of the resonant rod and affects the product index through its depth. At the same time, in this way, fasteners such as screws and bolts used to fix and adjust the resonant rod can be arranged inside the tubular structure, reducing the occupied space and making the structure more compact.

[0044] The insulating fixing component is used to fix the metal coupling piece in the cavity of the communication front-end equipment component and ensure the insulation between the metal coupling piece and the cavity. It can also take the form of a hook, screw kit, bracket, etc. made of insulating material.

[0045] In this solution, the metal coupling sheet is located on the side of the resonance rod, and can be set as one or multiple pieces. The adjusting screw is located between the metal coupling sheet and the resonance main rod, and its lower end close to the metal coupling sheet or the resonance main rod can be set to a specific shape as needed to achieve a specific coupling area, such as a flat structure or a specific columnar structure. The coupling strength of the coupling structure can be adjusted by, for example, adjusting the coupling area between the metal coupling sheet and the adjusting screw, and the coupling area between the resonance main rod and the adjusting screw by changing the diameter of the adjusting screw, and changing the size of the area directly facing the coupling structures, that is, the coupling area, by adjusting the height of the adjusting screw, so as to change the size of the coupling strength adjustment range between the metal coupling sheet and the resonance main rod: the larger the coupling area of ​​the adjusting screw, the larger the coupling strength adjustment range.

[0046] In addition to the above adjustment methods, for the coupling structure in which the metal coupling plate is located on the side of the resonant main rod, the coupling strength adjustment range can also be achieved by adjusting the thickness of the metal coupling plate: the greater the thickness of the metal coupling plate and the larger the coupling area, the greater the coupling strength adjustment range.

[0047] Figure 1 A top perspective view of a specific communication front-end device component is shown. Figure 1 As shown, the communication front-end device component has a cavity 5, and the cover plate 6 is fixed on the cavity 5 by the cover plate mounting screws 7 to form a closed cavity. Figure 1 As shown, four resonance rods 2 are arranged in the cavity 5, and each resonance rod 2 includes a resonance main rod for resonance. The resonance main rod in this embodiment is a tubular structure with an open upper end. The resonance rod mounting screw 11 inserted into the tubular structure can be used to fix the resonance rod 2 in the cavity 5 and adjust the height of the resonance rod 2 to achieve the adjustment of the coupling area relative to the metal coupling plate and the adjusting screw. The metal coupling plate 1 arranged in the cavity 5 of the communication front-end device component in this embodiment is non-contact coupled with two or more resonance rods 2 respectively according to product design requirements. As shown Figure 1 As shown, the communication front-end device component has two connectors 8 for signal transmission with other components, which are fixed to the side wall of the cavity 5 by connector mounting screws 9 respectively. The connector 8 includes a conductor rod at one end in the cavity 5, and a conductor disk is connected to the end of the conductor rod. The disk surface of the conductor disk faces the resonant main rod of the corresponding resonant rod 2, and the transmission of electromagnetic signals is achieved through the non-contact coupling between the conductor disk and the resonant rod 2. The adjusting screw 10 is fixed on the cover plate 6, extending into the relative gap between the resonant rod 2 and the metal coupling sheet 1 in the cavity, and passing through the cover plate 6 to couple with each resonant rod 2 and the metal coupling sheet 1. Since the upper end of the adjusting screw 10 is adjustable and fixed by the adjusting nut, the operating frequency and coupling condition of the communication front-end device component can be adjusted by selecting the size, insertion position and depth of the adjusting screw 10.

[0048] like Figure 1 , 2 As shown in Figures 3 and 4, the middle section of the metal coupling sheet 1 in this embodiment is set in the shape of a long strip, and its two ends are set as two semi-circular metal sheets. The overall shape is similar to a double-ended wrench, and its specific size parameters are specifically designed according to the product performance requirements. Each semi-circular metal sheet is respectively non-contactly sleeved on the resonant main rod of a resonant rod 2, and there is enough space between the metal coupling sheet and the resonant main rod to accommodate the adjustment screw 10; the adjustment screw 10 is located between the resonant main rod and the metal coupling sheet 1; in order to enable the metal coupling sheet 1 to be fixed in the cavity 5 and not directly contact the cavity 5, the resonant rod 2, and the adjustment screw 10, in this embodiment, a group of insulating screws 3 and insulating gaskets 4 made of non-metallic materials are used to fix the metal coupling sheet 1 in the cavity 5.

[0049] according to Figure 1 , 2 , 3, there is a strong coupling effect between the adjusting screw 10 in this embodiment and the metal coupling sheet 1 and the resonant main rod of the resonant rod 2. According to basic electromagnetic theory, there is an overlapping area between the projection of the adjusting screw 10 in the direction of the cavity side wall and the projection of the resonant main rod of the resonant rod 2 in the direction of the cavity side wall, namely, the coupling area; there is also an overlapping coupling area between the projection of the adjusting screw 10 in the direction of the cavity side wall and the projection of the metal coupling sheet 1 in the direction of the cavity side wall. The above-mentioned coupling area, as well as the projection distance between the adjusting screw 10 and the resonant main rod of the resonant rod 2 on the bottom of the cavity, the projection distance between the adjusting screw 10 and the metal coupling sheet 1 on the bottom of the cavity, the diameter of the adjusting screw 10, and the thickness of the metal coupling sheet 1, are the factors that have the greatest impact on the intensity of the coupling effect between the adjusting screw 10 and the resonant rod 2 and the metal coupling sheet 1. Therefore, the required coupling intensity can be obtained by adjusting these factors.

[0050] The larger the overlapping area between the adjusting screw 10 and the resonant main rod of the resonant rod 2, the greater the coupling strength between the adjusting screw 10 and the resonant rod 2, and vice versa. The adjustment of this parameter can be adjusted by changing the diameter of the adjusting screw, the shape of the resonant rod, and the depth of the resonant rod inserted into the cavity.

[0051] The larger the overlapping area of ​​the projection between the adjusting screw 10 and the metal coupling sheet 1, the greater the coupling strength between the adjusting screw 10 and the metal coupling sheet 1, and vice versa. This coupling area can change the coupling strength between the adjusting screw 10 and the resonant main rod and between the adjusting screw 10 and the metal coupling sheet 1 by changing the diameter of the adjusting screw 10, thereby indirectly changing the coupling strength between the metal coupling sheet 1 and the resonant rod 2.

[0052] In addition, various other feasible adjustment methods can also be used. For example, under the conditions that the annular width, semi-ring curvature and thickness of the semi-annular metal sheet are certain, the coupling strength can be adjusted by adjusting the position of the adjusting screw 10. The closer the distance between the adjusting screw 10 and the inner ring of the semi-annular metal sheet and the resonant main rod is, the greater the coupling strength.

[0053] Through the above specific embodiments, it can be known that the technical solution of the present invention can greatly improve the adjustable range of coupling strength between the coupling component and the resonant rod through the above-mentioned adjustment structure, and provides a variety of simple and effective coupling strength adjustment methods. The coupling structure of the present invention has a simple structure and low implementation cost, and can be widely used in communication front-end equipment components such as duplexers, combiners, filters, etc., and has a high value of promotion and application.

[0054] The above is only an embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An adjustable coupling structure, characterized in that: It is arranged in the middle of a signal channel inside a communication front-end device component, and comprises: a metal coupling sheet (1) which is arranged between two resonance rods (2) without electrical contact; The adjusting screws (10) include at least two adjusting screws (10), each of which is disposed between the metal coupling sheet (1) and each of the resonance rods (2), and each of the adjusting screws (10) is parallel to its adjacent resonance rod (2); An adjusting nut (12) used for fixing and adjusting the height of the adjusting screw rod (10) relative to the metal coupling sheet (1) and / or the resonance rod (2); The two ends of the metal coupling sheet (1) are respectively provided with structures that are opened toward the resonance rod (2) and the adjustment screw (10), and the two ends of the metal coupling sheet (1) are at least partially close to the side walls of the resonance rod (2) and the adjustment screw (10); It also comprises an insulating fixing component, which is arranged at the middle or both ends of the metal coupling sheet (1) and is used to fix the metal coupling sheet (1) between the adjusting screws (10) without electrical contact.

2. The adjustable coupling structure according to claim 1, characterized in that: The metal coupling sheet (1) is in a wrench shape, an I-shape, or has slots at both ends that at least partially surround the resonant rod (2) and the adjusting screw (10), and the thickness of the metal coupling sheet (1) is determined according to the coupling strength adjustment range.

3. The adjustable coupling structure according to claim 1, characterized in that: The insulating fixing assembly comprises: an insulating screw (3) and an insulating gasket (4); A through hole having a diameter matching that of the insulating screw (3) is also provided in the middle of the metal coupling sheet (1); the insulating screw (3) passes through the through hole, and the metal coupling sheet (1) is mounted between the adjusting screws (10) without electrical contact via the insulating gasket (4).

4. The adjustable coupling structure according to claim 1, characterized in that: The metal coupling plate (1) is mounted close to the resonant rod (2), and the adjusting screw (10) is close to the height of the metal coupling plate (1).

5. A communication front-end device component, comprising: The cavity (5) is used to receive, contain and process microwave signals; A cover plate (6) for closing the cavity (5); It is characterized in that an adjustable coupling structure as claimed in any one of claims 1 to 4 is arranged in the middle of the signal channel inside the cavity (5).

6. The communication front-end device component according to claim 5, characterized in that: The communication front-end equipment components include but are not limited to: a duplexer, a combiner, and a filter.

7. The communication front-end device element according to claim 5, characterized in that: The outer diameter of the adjusting screw (10) is determined according to the coupling strength adjustment range; The inner diameter of the adjusting nut (12) matches the outer diameter of the adjusting screw (10); the adjusting nut (12) is arranged on the cover plate (6); an adjusting hole matching the outer diameter of the adjusting screw (10) is also arranged on the cover plate (6) at a position corresponding to the lower end surface of the adjusting nut (12); the upper end of the adjusting screw (10) is fixed to the cover plate (6) by the adjusting nut (12); the lower end of the adjusting screw (10) passes through the adjusting hole and extends between the metal coupling sheet (1) and the resonance rod (2) in the cavity (5), and maintains no electrical contact with the metal coupling sheet (1) and the resonance rod (2).

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