Filter

Abstract

The utility model relates to the field of communication, and provides a filter. The filter includes a connector, a resonator, and a signal transduction assembly. The connector includes an inner conductor. One end of the signal conduction assembly is in capacitive coupling with the inner conductor of the connector, the other end of the signal conduction assembly is in coupling connection with the resonator, and the signal conduction assembly comprises at most two signal conduction pieces which are connected in sequence. Based on the structure, a low-pass filtering function can be integrated between the signal conduction assembly and the inner conductor of the connector, so that the signal conduction assembly can omit some low-pass structures and corresponding tap structures on the basis of maintaining the comprehensive inhibition performance and comprehensive filtering performance of the connector and the signal conduction assembly on signal energy; therefore, the number of the signal transduction pieces included in the signal transduction assembly can be reduced to at most two, and the structure of a link can be simplified and the length of the link can be shortened on the basis of maintaining the suppression performance and the filtering performance of the link from the connector to the resonator of the filter.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a filter. Background Art

[0002] In some cases, a filter includes a connector, a resonator, and a signal conduction component connected between the connector and the resonator. The signal conduction component includes a first tap piece, a first low-pass structure, a second tap piece, a second low-pass structure, and a third tap piece connected in sequence. Based on this, the signal conduction component has a large number of parts and a complex structure, resulting in a long link from the connector to the resonator of the filter. Summary of the Utility Model

[0003] An embodiment of this application provides a filter, aiming to solve the problem of a long link from the connector to the resonator of the filter.

[0004] To achieve the above object, the technical solution adopted in the embodiment of this application is: a filter, the filter includes:

[0005] A connector, including an inner conductor;

[0006] A resonator;

[0007] A signal conduction component, one end of the signal conduction component is capacitively coupled to the inner conductor of the connector, the other end of the signal conduction component is coupled to the resonator, and the signal conduction component includes at most two signal conduction members connected in sequence.

[0008] In some embodiments, the signal conduction member capacitively coupled to the inner conductor is a first conduction member, the inner conductor of the connector extends linearly, and the extending direction of the inner conductor intersects the extending direction of the first conduction member.

[0009] In some embodiments, the filter includes an insulating fixing member, the first conduction member passes through the insulating fixing member and has a first end suspended on the end side of the inner conductor; one of the inner conductor and the first end is provided with a plugging portion, and the other of the two is provided with a plugging hole, and the plugging portion is plugged and capacitively coupled with the plugging hole.

[0010] In some embodiments, the outer peripheral surface of the plugging portion is spaced from the hole wall of the plugging hole;

[0011] Or, a first dielectric sleeve is sleeved between the plugging portion and the plugging hole;

[0012] Alternatively, the filter further includes a coupling tube, the coupling tube is installed in the insertion hole and is coupled to the insertion hole, the insertion portion is inserted into the coupling tube, and an outer peripheral surface of the insertion portion is spaced from an inner tube wall of the coupling tube;

[0013] Alternatively, the filter further includes a coupling tube, the coupling tube is installed in the insertion hole and is coupled to the insertion hole, the insertion portion is inserted into the coupling tube, and a first dielectric sleeve is sleeved between the insertion portion and the coupling tube.

[0014] In some embodiments, the filter includes a coupling base, the coupling base is provided with a first coupling hole corresponding to the inner conductor, the inner conductor is inserted into the first coupling hole and is coupled to the coupling base, the first conductive member has a first end, and the first end is installed on the coupling base and is coupled to the coupling base;

[0015] At least one of the inner conductor and the first end is capacitively coupled to the coupling base.

[0016] In some embodiments, a first dielectric sleeve is sleeved between the inner conductor and the first coupling hole, the coupling base is provided with a limiting groove, the first end is installed in the limiting groove, and a second dielectric sleeve is sleeved on an outer periphery of the first end;

[0017] Alternatively, an outer peripheral surface of the inner conductor abuts and cooperates with a hole wall of the first coupling hole, the coupling base is provided with a limiting groove, the first end is installed in the limiting groove, and a second dielectric sleeve is sleeved on an outer periphery of the first end;

[0018] Alternatively, a first dielectric sleeve is sleeved between the inner conductor and the first coupling hole, and the first end is electrically conductively installed on the coupling base.

[0019] In some embodiments, the filter includes a filter housing, the coupling base is disposed in the filter housing and is integrally formed with the filter housing.

[0020] In some embodiments, the first conductive member is provided with a second coupling hole, the connector includes a conductor member, an extending direction of the conductor member intersects an extending direction of the inner conductor, one end of the conductor member is integrally connected to the inner conductor, and the other end of the conductor member is inserted into the second coupling hole and is capacitively coupled to the first conductive member.

[0021] In some embodiments, an outer peripheral surface of the conductor member is spaced from a hole wall of the second coupling hole;

[0022] Alternatively, a first dielectric sleeve is sleeved between the conductor member and the second coupling hole.

[0023] In some embodiments, the inner conductor includes a plurality of conductor segments arranged at intervals along its extending direction, and dielectric segments abutting between adjacent two of the conductor segments, and there is capacitive coupling between adjacent two of the conductor segments.

[0024] In some embodiments, the filter includes a coupling base, the coupling base is provided with a first coupling hole corresponding to the inner conductor, the inner conductor is inserted into the first coupling hole, an outer peripheral surface of the inner conductor abuts and cooperates with a hole wall of the first coupling hole, and the first conductive member has a first end, and the first end is electrically conductively mounted on the coupling base.

[0025] In some embodiments, the connector, the signal conduction component and the resonator are arranged on the same straight line.

[0026] In some embodiments, the signal conduction component includes one signal conduction member, and the signal conduction member extends linearly.

[0027] In some embodiments, the signal conduction member is of a low-pass structure;

[0028] Or, the signal conduction member is of a tapped structure;

[0029] Or, a part of the signal conduction member is of a tapped structure, and another part of the signal conduction member is of a low-pass structure.

[0030] In some embodiments, the signal conduction component includes two signal conduction members, both of the two signal conduction members extend linearly and are on the same straight line.

[0031] In some embodiments, one of the signal conduction members is of a tapped structure, and the other signal conduction member is of a low-pass structure;

[0032] And / or, there is capacitive coupling between the two signal conduction members.

[0033] In some embodiments, the signal conduction member is of a sheet metal structure.

[0034] In some embodiments, the signal conduction component is capacitively coupled to the resonator.

[0035] The beneficial effects of the filter provided by this application are as follows:

[0036] The filter provided by the embodiment of the present application forms a capacitive coupling of one or more levels between the signal conduction component and the inner conductor of the connector, so that an LC parallel resonance circuit can be formed between the signal conduction component and the inner conductor of the connector, and an equivalent low-pass filtering effect can be exerted. Based on this, a low-pass filtering function can be integrated between the signal conduction component and the inner conductor of the connector, so that on the basis of maintaining the comprehensive suppression performance and comprehensive filtering performance of the connector and the signal conduction component on the signal energy, the signal conduction component can omit the setting of some low-pass structures and the tap structures coupled between these low-pass structures and other components, thereby simplifying the structure of the signal conduction component, reducing the number of parts of the signal conduction component, and reducing the signal conductors included in the signal conduction component to at most two. Thus, on the basis of maintaining the suppression performance and filtering performance of the link of the filter from the connector to the resonator, the structure of the link can be simplified and the length of the link can be shortened, which is beneficial to the miniaturization, simplification and light weight of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 A three-dimensional schematic diagram of the filter provided by some embodiments of the present application;

[0039] Figure 2 is Figure 1 A top view of the link of the filter from the connector to the resonator provided;

[0040] Figure 3 is Figure 2 A sectional view taken along A-A provided;

[0041] Figure 4 A top view of a partial structure of the filter provided by some embodiments of the present application;

[0042] Figure 5 is Figure 4 A sectional view taken along B-B provided, wherein the inner conductor is provided with a plug-in portion, the first end of the first conductor is provided with a plug-in hole, and the plug-in portion is in plug-in fit and capacitive coupling with the plug-in hole;

[0043] Figure 6 A sectional view of a partial structure of the filter provided by some other embodiments of the present application, wherein the inner conductor is provided with a plug-in hole, the first end of the first conductor is provided with a plug-in portion, and the plug-in portion is in plug-in fit and capacitive coupling with the plug-in hole;

[0044] Figure 7 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, the inner conductor is inserted into the first coupling hole of the coupling seat, a first dielectric sleeve is sleeved between the inner conductor and the first coupling hole, the first end of the first conducting member is installed in the limiting groove of the coupling seat, and a second dielectric sleeve is sleeved on the outer periphery of the first end.

[0045] Figure 8 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, the inner conductor is inserted into the first coupling hole of the coupling seat, the outer peripheral surface of the inner conductor abuts and cooperates with the hole wall of the first coupling hole, the first end of the first conducting member is installed in the limiting groove of the coupling seat, and a second dielectric sleeve is sleeved on the outer periphery of the first end.

[0046] Figure 9 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, the inner conductor is inserted into the first coupling hole of the coupling seat, a first dielectric sleeve is sleeved between the inner conductor and the first coupling hole, and the first end of the first conducting member is electrically conductively installed on the coupling seat.

[0047] Figure 10 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, one end of the conductor member is integrally connected to the inner conductor, the other end of the conductor member is inserted into the second coupling hole and capacitively coupled with the first conducting member, and the first conducting member is a rod-shaped structure.

[0048] Figure 11 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, one end of the conductor member is integrally connected to the inner conductor, the other end of the conductor member is inserted into the second coupling hole and capacitively coupled with the first conducting member, and the first conducting member is a composite structure with a sheet-shaped main body and a column-shaped end.

[0049] Figure 12 Partial cross-sectional view of the structure of a filter provided for some other embodiments of the present application. Among them, the inner conductor includes a plurality of conductor segments and dielectric segments abutting between adjacent two conductor segments.

[0050] Among them, the reference numerals in the figure:

[0051] 10 - Connector, 11 - Inner conductor, 111 - Plugging part, 112 - Conductor segment, 113 - Dielectric segment, 116 - Third stop part, 12 - Outer shell, 121 - First mounting hole, 13 - Insulator, 14 - Conductor component; 20 - Resonator; 30 - Signal conduction component, 31 - Signal conduction part, 31a - First conduction part, 311 - First end, 3111 - Plugging hole, 3112 - Second mounting hole, 312 - Second coupling hole; 40 - Insulating fixing part; 50 - First dielectric sleeve, 51 - Second stop part; 60 - Coupling tube, 61 - First stop part; 70 - Coupling seat, 71 - First coupling hole, 72 - Limit groove; 80 - Second dielectric sleeve; 90 - Fastener; 100 - Filter housing. Detailed implementation manner

[0052] In order to clearly understand the technical problems, technical solutions and beneficial effects to be solved by this application, the following will describe this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0053] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application 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 this application.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0055] In this application, unless otherwise clearly defined and limited, the terms "mounting", "connecting", "coupling", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] A filter generally includes a connector, a resonator, and a signal conduction component connected between the connector and the resonator, so that a signal can be transmitted from the connector to the resonator via the signal conduction component, or can be transmitted from the resonator to the connector via the signal conduction component. In some cases, the signal conduction component includes a first tap piece, a first low-pass structure, a second tap piece, a second low-pass structure, and a third tap piece connected in sequence. Based on this, the signal conduction component has a large number of parts and a complex structure, resulting in a long link from the connector to the resonator of the filter, which is not conducive to the miniaturization of the filter.

[0057] Therefore, the embodiments of the present application provide a filter, which can simplify the structure of the link and shorten the length of the link on the basis of maintaining the suppression performance and filtering performance of the link from the connector to the resonator of the filter, thereby facilitating the miniaturization, simplification, and lightweight of the filter.

[0058] The following describes the specific implementation of the present application in detail with specific embodiments:

[0059] Please refer to Figure 1 、 Figure 2 、 Figure 3 In some embodiments of the present application, a filter is provided. The filter includes a connector 10, a resonator 20, and a signal conduction component 30. The connector 10 includes an inner conductor 11. One end of the signal conduction component 30 is capacitively coupled to the inner conductor 11 of the connector 10, and the other end of the signal conduction component 30 is coupled to the resonator 20. The signal conduction component 30 includes at most two signal conduction members 31 connected in sequence.

[0060] It should be noted that the connector 10 is a signal transmission end for connecting to an external device of the filter. The connector 10 can be a signal input end for inputting signals and energy, or a signal output end for outputting signals and energy. The connector 10 is provided with an inner conductor 11. One end of the inner conductor 11 is used to connect to an external device of the filter to implement the import or export of signals; the other end of the inner conductor 11 extends into the filter and is used to be coupled to one end of the signal conduction component 30 to implement the transmission of signals and energy between it and the signal conduction component 30.

[0061] It should also be noted that the resonator 20 refers to the resonator 20 coupled to the connector 10 via the signal conduction component 30. The signal conduction component 30 and the resonator 20 can be inductively coupled or capacitively coupled. When the connector 10 is used for inputting signals and energy, based on the sequential coupling relationship of the connector 10, the signal conduction component 30, and the resonator 20, the signals and energy can be transmitted from the connector 10 to the resonator 20 via the signal conduction component 30. When the connector 10 is used for outputting signals and energy, based on the sequential coupling relationship of the connector 10, the signal conduction component 30, and the resonator 20, the signals and energy can be transmitted from the resonator 20 to the connector 10 via the signal conduction component 30.

[0062] Among them, the resonator 20 can be a metal resonator, a sheet metal resonator, a ceramic dielectric resonator, or a dielectric resonator of other materials. The rod part of the resonator 20 can be a round rod, a polygonal rod, a special-shaped rod, or other forms. The rod part of the resonator 20 can be a hollow rod or a solid rod. The rod part of the resonator 20 can be provided with a resonance disk or not. The resonance disk can be provided with a flanging or not. This embodiment does not make any restrictions on this for the time being.

[0063] Of course, in some embodiments, other resonators can be provided inside the filter. A required coupling relationship can be established between the other resonators and the above-mentioned resonator 20 to form a complete and orderly signal channel inside the filter.

[0064] It should also be noted that a first-stage or multi-stage capacitive coupling is formed between the signal conduction component 30 and the inner conductor 11 of the connector 10, so that an L (i.e., inductance) C (i.e., capacitance) parallel resonance circuit can be formed between the signal conduction component 30 and the inner conductor 11 of the connector 10, and an equivalent low-pass filtering effect can be exerted (that is, during the transmission of signals and energy between the inner conductor 11 and the signal conduction component 30, high-frequency signals exceeding a set critical value can be blocked and weakened, and low-frequency signals are allowed to pass normally).

[0065] Based on this, since the low-pass filtering function is integrated between the signal conduction component 30 and the inner conductor 11 of the connector 10, therefore, some low-pass structures of the signal conduction component 30, and the tap structures coupled between these low-pass structures and other components can be omitted, so that the structure of the signal conduction component 30 can be simplified, the number of components of the signal conduction component 30 can be reduced, and the signal conduction member 31 included in the signal conduction component 30 can be reduced to at most two.

[0066] That is, as Figure 2 、 Figure 3As shown, in some embodiments, the signal conduction component 30 may include a signal conductor 31. One end of the signal conductor 31 is capacitively coupled to the inner conductor 11 of the connector 10, and the other end of the signal conductor 31 is inductively or capacitively coupled to the resonator 20. In other embodiments, the signal conduction component 30 may include two signal conductors 31 connected in sequence. One of the signal conductors 31 is capacitively coupled to the inner conductor 11 of the connector 10, and the other signal conductor 31 is inductively or capacitively coupled to the resonator 20.

[0067] Among them, according to the needs of signal energy transmission, suppression, and filtering, the signal conductor 31 can be a tap structure or a low-pass structure. Among them, the tap structure can be a sheet structure, a columnar structure, a rod-shaped structure, a wire structure, etc., and this embodiment does not limit this. Among them, the low-pass structure can be a sheet low-pass, a sugar-loaf low-pass, etc., and this embodiment does not limit the specific structure setting of the low-pass structure.

[0068] In summary, the filter provided by the embodiments of the present application forms a single-stage or multi-stage capacitive coupling between the signal conduction component 30 and the inner conductor 11 of the connector 10, so that an LC parallel resonance circuit can be formed between the signal conduction component 30 and the inner conductor 11 of the connector 10, and an equivalent low-pass filtering effect can be exerted. Based on this, a low-pass filtering function can be integrated between the signal conduction component 30 and the inner conductor 11 of the connector 10. Thus, on the basis of maintaining the comprehensive suppression performance and comprehensive filtering performance of the connector 10 and the signal conduction component 30 for signal energy, some low-pass structures can be omitted from the signal conduction component 30, and the tap structures coupled between these low-pass structures and other components can be omitted, so that the structure of the signal conduction component 30 can be simplified, the number of components of the signal conduction component 30 can be reduced, and the signal conductor 31 included in the signal conduction component 30 can be reduced to at most two. Thus, on the basis of maintaining the suppression performance and filtering performance of the filter from the connector 10 to the resonator 20, the structure of this link can be simplified and the length of this link can be shortened, which is beneficial to the miniaturization, simplicity, and light weight of the filter.

[0069] Moreover, due to the simplified structure of the filter from the connector 10 to the resonator 20, the assembly convenience and assembly efficiency of this link can be improved, the assembly deviation of this link can be reduced, and the consistency of the radio frequency performance of this link and the filter can be improved.

[0070] Meanwhile, since a capacitive coupling of one or more levels is formed between the signal conduction component 30 and the inner conductor 11 of the connector 10, it is not necessary to adopt a welding connection method between the signal conduction component 30 and the inner conductor 11 of the connector 10 to form an inductive coupling, reducing the risk of poor structural stability caused by welding and fatal failures caused by solder joint cracking in extreme environments, improving the stability of the link structure, and ensuring the performance of the filter.

[0071] The specific structure of the connector 10 in this embodiment is not uniquely limited. For example, Figure 4 , Figure 5 As shown, in some embodiments, the connector 10 includes a housing 12, an insulator 13, and an inner conductor 11. The housing 12 is penetrated with a first mounting hole 121. The insulator 13 is installed in the first mounting hole 121. The inner conductor 11 passes through the insulator 13. Opposite ends of the inner conductor 11 both protrude from the insulator 13. The insulator 13 provides a fixing and supporting effect for the inner conductor 11, and the insulator 13 insulates and blocks between the inner conductor 11 and the housing 12.

[0072] Please refer to Figure 2 , Figure 4 , Figure 5 . In some embodiments of the present application, the signal conduction member 31 capacitively coupled to the inner conductor 11 is a first conduction member 31a. The inner conductor 11 of the connector 10 extends linearly, and the extending direction of the inner conductor 11 intersects the extending direction of the first conduction member 31a.

[0073] It should be noted that the signal conduction component 30 includes a first conduction member 31a, and the first conduction member 31a is the signal conduction member 31 capacitively coupled to the inner conductor 11 of the connector 10. The first conduction member 31a can be a tap structure or a low-pass structure. The first conduction member 31a can be a sheet structure, a columnar structure, a rod-like structure, etc.

[0074] The inner conductor 11 of the connector 10 extends linearly, and the extending direction of the inner conductor 11 of the connector 10 intersects (for example, is perpendicular to) the extending direction of the first conduction member 31a. As Figure 5 shown, in some embodiments, the extending direction of the inner conductor 11 of the connector 10 is vertically arranged, the extending direction of the first conduction member 31a is horizontally arranged, and the extending direction of the inner conductor 11 of the connector 10 is perpendicular to the extending direction of the first conduction member 31a.

[0075] By adopting the above solution, by arranging the inner conductor 11 of the connector 10 to extend linearly, the processing and forming of the inner conductor 11 of the connector 10 can be facilitated, and the processing convenience and structural strength of the inner conductor 11 of the connector 10 can be improved. On this basis, by making the extending direction of the inner conductor 11 intersect with the extending direction of the first conductive member 31a, it is convenient to directly form capacitive coupling between the inner conductor 11 of the connector 10 and the first conductive member 31a at the intersection point, and it is also convenient to arrange other components at the intersection point between the inner conductor 11 of the connector 10 and the first conductive member 31a to indirectly form capacitive coupling via other components. Based on this, the coupling connection design between the inner conductor 11 of the connector 10 and the first conductive member 31a can be facilitated, which helps to improve the connection convenience, connection reliability and connection stability of the coupling connection between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0076] Please refer to Figure 5 、 Figure 6 In some embodiments of the present application, the filter includes an insulating fixing member 40. The first conductive member 31a passes through the insulating fixing member 40 and has a first end 311 suspended on the end side of the inner conductor 11. One of the inner conductor 11 and the first end 311 is provided with a plug-in portion 111, and the other of the two is provided with a plug-in hole 3111. The plug-in portion 111 is in plug-in fit with the plug-in hole 3111 and forms capacitive coupling.

[0077] Among them, the insulating fixing member 40 is a component made of insulating material. The insulating fixing member 40 can be, but is not limited to, a block structure.

[0078] Exemplarily, the insulating fixing member 40 is an integral block structure, and the insulating fixing member 40 has a through hole. The first conductive member 31a passes through the through hole of the insulating fixing member 40.

[0079] Exemplarily, the insulating fixing member 40 is a split structure. The insulating fixing member 40 includes two sub-fixing members, and the two sub-fixing members are connected to each other. The first conductive member 31a is clamped between the two sub-fixing members.

[0080] It can be understood that the structural form of the insulating fixing member 40 is not limited to the above two examples, and it can also be other structural forms as long as it can fix and support the first conductive member 31a.

[0081] It should be noted that the first conductive member 31a passes through the insulating fixing member 40, and the insulating fixing member 40 provides fixing, supporting and insulating effects for the first conductive member 31a. Under the support of the insulating fixing member 40, the first end 311 of the first conductive member 31a for coupling connection with the inner conductor 11 is suspended on the end side of the inner conductor 11, and the first end 311 has a certain elasticity due to the suspended arrangement.

[0082] Based on this, asFigure 5 As shown, in some embodiments, the first end 311 may be provided with a socket hole 3111. The socket hole 3111 may be arranged corresponding to and aligned with the inner conductor 11 along the extending direction of the inner conductor 11, and the socket hole 3111 may penetrate through the first end 311 along the extending direction of the inner conductor 11. Correspondingly, the inner conductor 11 may be provided with a socket portion 111. The socket portion 111 may be inserted into the socket hole 3111, and the socket portion 111 may be capacitively coupled with the socket hole 3111, so as to realize the capacitive coupling between the inner conductor 11 and the first conductive member 31a. Wherein, the socket portion 111 may be integrally formed on the inner conductor 11 or may be separately connected to the inner conductor 11. As Figure 5 As shown, in some embodiments, the socket portion 111 is integrally formed on the inner conductor 11.

[0083] As Figure 6 As shown, in some other embodiments, the first end 311 may be provided with a socket portion 111. The socket portion 111 is arranged corresponding to and aligned with the inner conductor 11 along the extending direction of the inner conductor 11, and protrudes toward the inner conductor 11. Correspondingly, the inner conductor 11 may be provided with a socket hole 3111 arranged corresponding to and aligned with the socket portion 111, and the socket hole 3111 is a blind hole. The socket portion 111 may be inserted into the socket hole 3111, and the socket portion 111 may be capacitively coupled with the socket hole 3111, so as to realize the capacitive coupling between the inner conductor 11 and the first conductive member 31a. Wherein, the socket portion 111 may be integrally formed on the first end 311 or may be separately connected to the first end 311. As Figure 6 As shown, in some embodiments, the first end 311 is penetrated with a second mounting hole 3112, and a coupling pin is embedded in the second mounting hole 3112. The pin portion of the coupling pin faces the inner conductor 11, and the pin portion of the coupling pin forms the socket portion 111.

[0084] By adopting the above scheme, the insulating fixing member 40 can provide fixation, support and insulation effects for the first conductive member 31a passing through it, so as to make the first conductive member 31a in a stable position and make the first end 311 of the first conductive member 31a suspended on the end side of the inner conductor 11. On this basis, by providing a socket portion 111 on one of the inner conductor 11 and the first end 311, and a socket hole 3111 on the other one of them, it is convenient to realize the capacitive coupling between the inner conductor 11 and the first end 311 through the insertion fit between the socket portion 111 and the socket hole 3111, so that the capacitive coupling between the inner conductor 11 and the first conductive member 31a of the connector 10 can be realized conveniently, quickly and reliably, and the coupling connection design can be simplified and the number of parts can be reduced.

[0085] Moreover, supported by the insulating fixture 40, the first end 311 can have a certain elasticity due to its suspended setting. Based on this, on the one hand, during the insertion fit between the insertion portion 111 and the insertion hole 3111, it is convenient for the first end 311 to elastically deform under the action of an external force as required, so that the insertion portion 111 can be quickly and smoothly inserted into the insertion hole 3111, which is conducive to improving the insertion convenience between the insertion portion 111 and the insertion hole 3111, and is conducive to improving the connection convenience and connection efficiency of the coupling connection between the inner conductor 11 of the connector 10 and the first conductive member 31a. On the other hand, during the use of the filter, it is convenient for the first end 311 to elastically fluctuate with vibration or other acting forces and maintain a reliable insertion fit relationship with the inner conductor 11, which is conducive to improving the durability and reliability of the coupling connection between the inner conductor 11 of the connector 10 and the first conductive member 31a, and is conducive to improving the reliability of signal transmission between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0086] Please refer to Figure 5 、 Figure 6 , in some embodiments of the present application, the outer peripheral surface of the insertion portion 111 is spaced from the hole wall of the insertion hole 3111.

[0087] By adopting the above solution, in the case of the insertion fit between the insertion portion 111 and the insertion hole 3111, by spacing the outer peripheral surface of the insertion portion 111 from the hole wall of the insertion hole 3111, it is possible to make the outer peripheral surface of the insertion portion 111 and the hole wall of the insertion hole 3111 be separated by air as a medium, so that it is convenient to form a capacitor between the insertion portion 111 and the insertion hole 3111, and it is convenient to achieve stable and reliable capacitive coupling between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0088] It should be noted that when the insertion hole 3111 is a blind hole, that is, the insertion hole 3111 has a hole bottom, the outer end surface of the insertion portion 111 also needs to be spaced from the hole bottom of the insertion hole 3111.

[0089] Please refer to Figure 6 , in some embodiments of the present application, a first dielectric sleeve 50 is sleeved between the insertion portion 111 and the insertion hole 3111.

[0090] It should be noted that the first dielectric sleeve 50 is made of an insulating material. The first dielectric sleeve 50 is stably installed in the insertion hole 3111. The insertion portion 111 is inserted into the first dielectric sleeve 50, so that the first dielectric sleeve 50 is sleeved between the insertion portion 111 and the insertion hole 3111. The first dielectric sleeve 50 is used to insulate between the insertion portion 111 and the insertion hole 3111 and form an effective capacitor.

[0091] Among them, the dielectric constant of the first dielectric sleeve 50 can be set according to the required effective dielectric constant and capacitance between the insertion part 111 and the insertion hole 3111. The larger the dielectric constant of the first dielectric sleeve 50, the larger the capacitance between the insertion part 111 and the insertion hole 3111, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 of the connector 10 and the first conductor 31a.

[0092] By adopting the above scheme, when the insertion part 111 and the insertion hole 3111 are inserted and matched, the first dielectric sleeve 50 can be sleeved between the insertion part 111 and the insertion hole 3111, so that the outer peripheral surface of the insertion part 111 and the hole wall of the insertion hole 3111 can use the first dielectric sleeve 50 as the medium, thereby facilitating the formation of capacitance between the insertion part 111 and the insertion hole 3111, and facilitating the realization of stable and reliable capacitive coupling between the insertion part 111 and the insertion hole 3111. Moreover, based on the setting of the first dielectric sleeve 50, it is also beneficial to promote the stability of the relative state and relative position between the insertion part 111 and the insertion hole 3111, and a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the insertion part 111 and the hole wall of the insertion hole 3111, and the risk that the insertion part 111 shakes relative to the insertion hole 3111 and contacts the hole wall of the insertion hole 3111 can be effectively reduced, thereby being beneficial to improving the reliability of the capacitive coupling between the inner conductor 11 and the first conductor 31a.

[0093] Please refer to Figure 5 , in some embodiments of the present application, the filter further includes a coupling tube 60, and the coupling tube 60 is installed in the insertion hole 3111 and is coupled to the insertion hole 3111. The insertion part 111 is inserted into the coupling tube 60, and the outer peripheral surface of the insertion part 111 is spaced from the inner tube wall of the coupling tube 60.

[0094] It should be noted that the coupling tube 60 is made of metal, and the coupling tube 60 is stably installed in the insertion hole 3111. The coupling tube 60 is coupled to the insertion hole 3111 (especially the hole wall of the insertion hole 3111), and the coupling polarity between the coupling tube 60 and the insertion hole 3111 can be inductive or capacitive. In some embodiments, the outer tube wall of the coupling tube 60 abuts against the hole wall of the insertion hole 3111, so that inductive coupling is formed between the coupling tube 60 and the insertion hole 3111.

[0095] The insertion part 111 is inserted into the coupling tube 60, so that the insertion part 111 is indirectly inserted into the insertion hole 3111. The outer peripheral surface of the insertion part 111 is spaced from the inner tube wall of the coupling tube 60, so that an effective capacitance is formed between the outer peripheral surface of the insertion part 111 and the inner tube wall of the coupling tube 60 with air as the medium, thereby realizing capacitive coupling between the insertion part 111 and the coupling tube 60. Based on this, in combination with the coupling connection between the coupling tube 60 and the insertion hole 3111, capacitive coupling can be formed between the insertion part 111 and the insertion hole 3111.

[0096] By adopting the above solution, the coupling tube 60 can be installed in the insertion hole 3111 and the coupling tube 60 can be coupled to the insertion hole 3111. And by inserting the insertion part 111 into the coupling tube 60, the insertion part 111 can be coupled to the insertion hole 3111 via the coupling tube 60. On this basis, the outer peripheral surface of the insertion part 111 can be spaced from the inner tube wall of the coupling tube 60, so that air can be used as the medium between the outer peripheral surface of the insertion part 111 and the inner tube wall of the coupling tube 60. Thus, it is convenient to form a capacitor between the insertion part 111 and the coupling tube 60, and it is convenient to achieve stable and reliable capacitive coupling between the insertion part 111 and the coupling tube 60. Therefore, it is convenient to achieve stable and reliable capacitive coupling between the insertion part 111 and the insertion hole 3111. Moreover, based on the arrangement of the coupling tube 60, the coupling area between the insertion part 111 and the coupling tube 60 can be increased, and the coupling strength between the insertion part 111 and the coupling tube 60 can be enhanced. Thus, it is beneficial to enhance the coupling strength between the insertion part 111 and the insertion hole 3111, and it is beneficial to enhance the reliability of the capacitive coupling between the inner conductor 11 and the first conductive part 31a. This embodiment is particularly applicable to the case where "the insertion hole 3111 is provided at the first end 311".

[0097] Please refer to Figure 5 , in some embodiments of the present application, the filter further includes a coupling tube 60, and the coupling tube 60 is installed in the insertion hole 3111 and is coupled to the insertion hole 3111. The insertion part 111 is inserted into the coupling tube 60, and a first dielectric sleeve 50 is sleeved between the insertion part 111 and the coupling tube 60.

[0098] It should be noted that the coupling tube 60 is stably installed in the insertion hole 3111. The coupling tube 60 is coupled to the insertion hole 3111 (especially the hole wall of the insertion hole 3111), and the coupling polarity between the coupling tube 60 and the insertion hole 3111 can be inductive or capacitive. In some embodiments, the outer tube wall of the coupling tube 60 abuts against the hole wall of the insertion hole 3111, so that inductive coupling is achieved between the coupling tube 60 and the insertion hole 3111.

[0099] The first dielectric sleeve 50 is made of an insulating material. The first dielectric sleeve 50 is stably installed in the coupling tube 60. The insertion part 111 is inserted into the first dielectric sleeve 50, so that the first dielectric sleeve 50 is sleeved between the insertion part 111 and the coupling tube 60. The first dielectric sleeve 50 is used to insulate between the insertion part 111 and the coupling tube 60 and form an effective capacitor.

[0100] Among them, the dielectric constant of the first dielectric sleeve 50 can be set according to the required effective dielectric constant and capacitance between the insertion part 111 and the coupling tube 60. The larger the dielectric constant of the first dielectric sleeve 50, the larger the capacitance between the insertion part 111 and the coupling tube 60, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 and the first conductive part 31a.

[0101] By adopting the above scheme, the coupling tube 60 can be installed in the insertion hole 3111 and the coupling tube 60 can be coupled and connected with the insertion hole 3111, and the insertion part 111 can be inserted into the coupling tube 60 so that the insertion part 111 can be coupled and connected with the insertion hole 3111 via the coupling tube 60. On this basis, the first dielectric sleeve 50 can be sleeved between the insertion part 111 and the coupling tube 60 so that the outer peripheral surface of the insertion part 111 and the inner pipe wall of the coupling tube 60 can use the first dielectric sleeve 50 as the medium, so that it is convenient to form a capacitance between the insertion part 111 and the coupling tube 60, and it is convenient to realize stable and reliable capacitive coupling between the insertion part 111 and the coupling tube 60, so that it is convenient to realize stable and reliable capacitive coupling between the insertion part 111 and the insertion hole 3111. And, based on the setting of the coupling tube 60, the coupling area between the insertion part 111 and the coupling tube 60 can be increased, and the coupling strength between the insertion part 111 and the coupling tube 60 can be enhanced, which is beneficial to enhancing the coupling strength between the insertion part 111 and the insertion hole 3111, and beneficial to enhancing the reliability of the capacitive coupling between the inner conductor 11 and the first conductive part 31a. And, based on the setting of the first dielectric sleeve 50, it is also beneficial to promote the stability of the relative state and relative position between the insertion part 111 and the coupling tube 60, and a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the insertion part 111 and the inner pipe wall of the coupling tube 60, and the risk that the insertion part 111 shakes relative to the coupling tube 60 and contacts the inner pipe wall of the coupling tube 60 can be effectively reduced, which is beneficial to improving the reliability of the capacitive coupling between the inner conductor 11 and the first conductive part 31a. This embodiment is particularly applicable to the case where "the insertion hole 3111 is provided at the first end 311".

[0102] As Figure 5 shown, in some embodiments, a first stop portion 61 is provided at one end of the coupling tube 60, and the first stop portion 61 may be optionally provided in a ring shape. When the coupling tube 60 is installed in the insertion hole 3111, the first stop portion 61 can stop at the hole edge of the insertion hole 3111, so that the coupling tube 60 is hooked on the insertion hole 3111, thereby stabilizing the installation position and installation state of the coupling tube 60 relative to the insertion hole 3111, and reducing the risk of the coupling tube 60 falling off and disengaging from the insertion hole 3111.

[0103] As Figure 5As shown, in some embodiments, a second stopper 51 is provided at one end of the first dielectric sleeve 50, and the second stopper 51 can be optionally provided in a ring shape. When the first dielectric sleeve 50 is sleeved between the coupling tube 60 and the plug-in portion 111, the second stopper 51 can be stopped at the tube mouth of the coupling tube 60, so that the first dielectric sleeve 50 is hooked on the coupling tube 60, thereby stabilizing the installation position and installation state of the first dielectric sleeve 50 relative to the coupling tube 60, and reducing the risk of the first dielectric sleeve 50 falling off or detaching from the coupling tube 60. Of course, in other embodiments, if the coupling tube 60 is omitted, the first dielectric sleeve 50 is sleeved between the plug-in hole 3111 and the plug-in portion 111, and the first dielectric sleeve 50 can also be hooked on the hole edge of the plug-in hole 3111 via the second stopper 51 to stabilize the installation position and installation state of the first dielectric sleeve 50 relative to the plug-in hole 3111.

[0104] like Figure 5 As shown, in some embodiments, a third stopper 116 is provided at one end of the plug-in portion 111 away from the plug-in hole 3111. The third stopper 116 can be optionally arranged in a ring shape. When the plug-in portion 111 is inserted into the first dielectric sleeve 50, the third stopper 116 can cooperate with the first dielectric sleeve 50 to stabilize the relative position and relative state between the plug-in portion 111 and the first dielectric sleeve 50, so that the plug-in portion 111 and the first dielectric sleeve 50 are relatively limited, thereby promoting the coupling area and coupling effect between the plug-in portion 111 and the plug-in hole 3111 to meet expectations, thereby facilitating the accuracy and stability of the filter indicators. In addition, the third stopper 116 can also limit the first dielectric sleeve 50, which can facilitate the first dielectric sleeve 50 to be limited and stabilized between the third stopper 116 and the coupling tube 60, so that the first dielectric sleeve 50 can stably and reliably exert its effectiveness.

[0105] like Figure 5As shown, in some embodiments, when the insertion portion 111 is provided on the inner conductor 11 and the insertion hole 3111 is provided at the first end 311, since the first end 311 is suspended, the insertion hole 3111 can penetrate the first end 311 along the extension direction of the inner conductor 11, so that the insertion portion 111 can pass through the insertion hole 3111, and in the extension direction of the inner conductor 11, the insertion fit between the insertion portion 111 and the insertion hole 3111 can be unobstructed by the insertion hole 3111. Based on this, the length accuracy requirement of the inner conductor 11 can be reduced, and it only needs to meet the requirement of being able to be inserted into the insertion hole 3111. If the length of the inner conductor 11 is too long, it only needs to pass through the insertion hole 3111. There is no need to worry that due to the too long length of the inner conductor 11, it is difficult to reliably insert and fit the insertion portion 111 and the insertion hole 3111, which will affect the capacitive coupling between the insertion portion 111 and the insertion hole 3111. When manufacturing the inner conductor 11, the problem of length accuracy does not need to be considered, which can improve the processing efficiency of the inner conductor 11, reduce the processing difficulty, and at the same time, the inner conductor 11 also has more choices of length and size. Moreover, when the coupling tube 60 and / or the first dielectric sleeve 50 are provided in the insertion hole 3111, the length accuracy requirements of the coupling tube 60 and / or the first dielectric sleeve 50 can also be reduced, and there is no need to worry about being blocked by the insertion hole 3111 due to their own too long length, which is beneficial to improving the processing efficiency of the coupling tube 60 and / or the first dielectric sleeve 50 and reducing the processing difficulty. In addition, when the coupling tube 60 and / or the first dielectric sleeve 50 are provided in the insertion hole 3111, the end of the coupling tube 60 and / or the first dielectric sleeve 50 away from the insertion portion 111 can be an open end or a closed end; when the end of the coupling tube 60 and / or the first dielectric sleeve 50 away from the insertion portion 111 is an open end, the length accuracy requirement of the inner conductor 11 can be reduced. Even if the length of the inner conductor 11 is too long, the inner conductor 11 can pass through the open end of the coupling tube 60 and / or the first dielectric sleeve 50 without affecting the capacitive coupling between the insertion portion 111 and the insertion hole 3111; when the end of the coupling tube 60 away from the insertion portion 111 is a closed end, the outer end face of the insertion portion 111 should be spaced from the inner bottom wall of the coupling tube 60.

[0106] As Figure 6As shown, in some embodiments, when the insertion part 111 is provided at the first end 311 and the insertion hole 3111 is provided in the inner conductor 11, since the insertion hole 3111 is a blind hole and the inner conductor 11 has a certain length in the extending direction of the inner conductor 11, the depth of the insertion hole 3111 can be designed to be relatively deep. Based on this, when the insertion part 111 is inserted and mated with the insertion hole 3111, there can be sufficient coupling area between the hole wall of the insertion hole 3111 and the outer peripheral wall of the insertion part 111. Furthermore, sufficient coupling strength can be ensured between the insertion part 111 and the insertion hole 3111, which is beneficial to ensuring the reliability of the capacitive coupling between the inner conductor 11 and the first conductive part 31a. Based on this, on the premise of ensuring the reliability of the capacitive coupling between the inner conductor 11 and the first conductive part 31a, the setting of the coupling tube 60 can be omitted, and there is no need to enhance the coupling strength by setting the coupling tube 60, saving the types of materials and reducing the number of components.

[0107] Please refer to Figure 7 、 Figure 8 、 Figure 9 , in some embodiments of the present application, the filter includes a coupling seat 70. The coupling seat 70 is provided with a first coupling hole 71 corresponding to the inner conductor 11. The inner conductor 11 is inserted into the first coupling hole 71 and is coupled to the coupling seat 70. The first conductive part 31a has a first end 311, and the first end 311 is installed on the coupling seat 70 and is coupled to the coupling seat 70. At least one of the inner conductor 11 and the first end 311 is capacitively coupled to the coupling seat 70.

[0108] It should be noted that the coupling seat 70 is provided at the intersection position of the inner conductor 11 and the first conductive part 31a. The side of the coupling seat 70 facing the inner conductor 11 is provided with a first coupling hole 71. The first coupling hole 71 is arranged corresponding to and in alignment with the inner conductor 11 along the extending direction of the inner conductor 11. The first coupling hole 71 is a blind hole. The inner conductor 11 is inserted into the first coupling hole 71, so that the inner conductor 11 is coupled to the coupling seat 70. The first conductive part 31a has a first end 311, and the first end 311 is installed on the coupling seat 70, so that the first conductive part 31a is coupled to the coupling seat 70. Based on this, the inner conductor 11 and the first conductive part 31a can be indirectly coupled through the coupling seat 70.

[0109] It should also be noted that in order to form capacitive coupling between the inner conductor 11 and the first conductive part 31a, at least one of the inner conductor 11 and the first end 311 needs to be capacitively coupled to the coupling seat 70.

[0110] As Figure 7 shown, in some embodiments, the inner conductor 11 is capacitively coupled to the coupling seat 70, and the first conductive part 31a is capacitively coupled to the coupling seat 70, so that there is multi-stage capacitive coupling between the inner conductor 11 and the first conductive part 31a.

[0111] As Figure 8 shown, in some embodiments, the inner conductor 11 is inductively coupled to the coupling base 70, and the first conductive member 31a is capacitively coupled to the coupling base 70, such that there is a capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0112] As Figure 9 shown, in some embodiments, the inner conductor 11 is capacitively coupled to the coupling base 70, and the first conductive member 31a is inductively coupled to the coupling base 70, such that there is a capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0113] By adopting the above solution, the coupling base 70 can be arranged at the intersection position of the inner conductor 11 and the first conductive member 31a, so that the inner conductor 11 is inserted into the first coupling hole 71 of the coupling base 70, and the first end 311 is installed on the coupling base 70, so that the inner conductor 11, the coupling base 70, and the first end 311 are sequentially coupled and connected, and the inner conductor 11 and the first conductive member 31a can be indirectly coupled and connected via the coupling base 70. In particular, at least one of the inner conductor 11 and the first end 311 can be capacitively coupled to the coupling base 70 to promote the formation of one - stage or multi - stage capacitive coupling between the inner conductor 11 and the first conductive member 31a. Based on this, the capacitive coupling between the inner conductor 11 and the first conductive member 31a can be conveniently, quickly, and reliably realized, and the diversification of the coupling connection design between the inner conductor 11 and the first conductive member 31a can be improved.

[0114] Please refer to Figure 7 , in some embodiments of the present application, a first dielectric sleeve 50 is sleeved between the inner conductor 11 and the first coupling hole 71, the coupling base 70 is provided with a limiting groove 72, the first end 311 is installed in the limiting groove 72, and a second dielectric sleeve 80 is sleeved on the outer periphery of the first end 311.

[0115] It should be noted that the first dielectric sleeve 50 is made of an insulating material. The first dielectric sleeve 50 is stably installed in the first coupling hole 71. The inner conductor 11 is inserted into the first dielectric sleeve 50, such that the first dielectric sleeve 50 is sleeved between the inner conductor 11 and the first coupling hole 71. The first dielectric sleeve 50 is used to insulate the inner conductor 11 and the first coupling hole 71 and form an effective capacitance. Based on this, a capacitive coupling can be formed between the inner conductor 11 and the coupling base 70.

[0116] Among them, the dielectric constant of the first dielectric sleeve 50 can be set according to the required effective dielectric constant and capacitance between the inner conductor 11 and the first coupling hole 71. The larger the dielectric constant of the first dielectric sleeve 50, the larger the capacitance between the inner conductor 11 and the first coupling hole 71, and the better the suppression performance of the equivalent low - pass between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0117] It should also be noted that the coupling seat 70 is provided with a limiting groove 72. The limiting groove 72 is arranged corresponding to and in alignment with the first end 311 along the extending direction of the first conductive member 31a. One end of the limiting groove 72 along the extending direction of the first conductive member 31a communicates with the outside of the coupling seat 70. The first end 311 of the first conductive member 31a is limited and installed in the limiting groove 72. A second dielectric sleeve 80 is sleeved on the outer periphery of the first end 311. The second dielectric sleeve 80 is made of an insulating material. The second dielectric sleeve 80 is used to insulate the first end 311 from the coupling seat 70 and form an effective capacitance. Based on this, capacitive coupling is also formed between the first end 311 and the coupling seat 70.

[0118] Among them, the dielectric constant of the second dielectric sleeve 80 can be set according to the required effective dielectric constant and capacitance between the first end 311 and the coupling seat 70. The larger the dielectric constant of the second dielectric sleeve 80, the larger the capacitance between the first end 311 and the coupling seat 70, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0119] By adopting the above scheme, by sleeving the first dielectric sleeve 50 between the inner conductor 11 and the first coupling hole 71, the inner conductor 11 and the first coupling hole 71 can use the first dielectric sleeve 50 as a medium, so that it is convenient to form a capacitance between the inner conductor 11 and the first coupling hole 71, and it is convenient to achieve stable and reliable capacitive coupling between the inner conductor 11 and the first coupling hole 71. By sleeving the second dielectric sleeve 80 on the outer periphery of the first end 311 and installing the first end 311 and the second dielectric sleeve 80 as a whole into the limiting groove 72 of the coupling seat 70, the first end 311 and the coupling seat 70 can use the second dielectric sleeve 80 as a medium, so that it is convenient to form a capacitance between the first end 311 and the coupling seat 70, and it is convenient to achieve stable and reliable capacitive coupling between the first end 311 and the coupling seat 70. Thus, it is possible to conveniently, quickly and reliably promote multi-stage capacitive coupling between the inner conductor 11 and the first conductive member 31a via the coupling seat 70 with a simplified structural design and coupling connection design.

[0120] Moreover, based on the setting of the first dielectric sleeve 50, it is also beneficial to promote the stability of the relative state and relative position between the inner conductor 11 and the first coupling hole 71, and a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the inner conductor 11 and the hole wall of the first coupling hole 71, and the risk of the inner conductor 11 shaking relative to the first coupling hole 71 and contacting the hole wall of the first coupling hole 71 can be effectively reduced. Based on the setting of the second dielectric sleeve 80, a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the first end 311 and the groove walls of the limiting groove 72. Thus, it is beneficial to improve the reliability of the capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0121] Of course, in other embodiments, the first dielectric sleeve 50 may be omitted between the inner conductor 11 and the first coupling hole 71, and a gap may be provided between the outer peripheral surface of the inner conductor 11 and the hole wall of the first coupling hole 71, so that a capacitive coupling is formed between the inner conductor 11 and the first coupling hole 71.

[0122] Please refer to Figure 8 , in some embodiments of the present application, the outer peripheral surface of the inner conductor 11 is in abutting fit with the hole wall of the first coupling hole 71. The coupling seat 70 is provided with a limiting groove 72. The first end 311 is installed in the limiting groove 72, and a second dielectric sleeve 80 is sleeved on the outer periphery of the first end 311.

[0123] It should be noted that the inner conductor 11 is inserted into the first coupling hole 71 of the coupling seat 70, and the outer peripheral surface of the inner conductor 11 is in abutting fit with the hole wall of the first coupling hole 71, so that an inductive coupling is formed between the inner conductor 11 and the coupling seat 70.

[0124] The coupling seat 70 is provided with a limiting groove 72. The limiting groove 72 is correspondingly arranged and aligned with the first end 311 along the extending direction of the first conductive member 31a. One end of the limiting groove 72 along the extending direction of the first conductive member 31a communicates with the outside of the coupling seat 70. The first end 311 of the first conductive member 31a is limited and installed in the limiting groove 72. A second dielectric sleeve 80 is sleeved on the outer periphery of the first end 311. The second dielectric sleeve 80 is made of an insulating material. The second dielectric sleeve 80 is used to insulate the first end 311 from the coupling seat 70 and form an effective capacitance. Based on this, a capacitive coupling is formed between the first end 311 and the coupling seat 70.

[0125] Wherein, the dielectric constant of the second dielectric sleeve 80 can be set according to the required effective dielectric constant and capacitance between the first end 311 and the coupling seat 70. The larger the dielectric constant of the second dielectric sleeve 80, the larger the capacitance between the first end 311 and the coupling seat 70, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 and the first conductive member 31a of the connector 10.

[0126] By adopting the above solution, when the inner conductor 11 is inserted into the first coupling hole 71 of the coupling seat 70, by making the outer peripheral surface of the inner conductor 11 abut and cooperate with the hole wall of the first coupling hole 71, it is convenient to achieve stable and reliable inductive coupling between the inner conductor 11 and the coupling seat 70. And by sleeving a second dielectric sleeve 80 on the outer periphery of the first end 311 and integrally installing the first end 311 and the second dielectric sleeve 80 into the limiting groove 72 of the coupling seat 70, it is possible to enable the first end 311 and the coupling seat 70 to use the second dielectric sleeve 80 as a medium, so that it is convenient to form a capacitor between the first end 311 and the coupling seat 70, and it is convenient to achieve stable and reliable capacitive coupling between the first end 311 and the coupling seat 70. Thus, it is possible to conveniently, quickly and reliably promote capacitive coupling between the inner conductor 11 and the first conductive member 31a via the coupling seat 70 with a simplified structural design and coupling connection design. Moreover, based on the setting of the second dielectric sleeve 80, a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the first end 311 and the groove walls of the limiting groove 72, which is beneficial to improving the reliability of the capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0127] Please refer to Figure 9 , in some embodiments of the present application, a first dielectric sleeve 50 is sleeved between the inner conductor 11 and the first coupling hole 71, and the first end 311 is electrically conductively installed on the coupling seat 70.

[0128] It should be noted that the first dielectric sleeve 50 is made of an insulating material. The first dielectric sleeve 50 is stably installed in the first coupling hole 71. The inner conductor 11 is inserted into the first dielectric sleeve 50, so that the first dielectric sleeve 50 is sleeved between the inner conductor 11 and the first coupling hole 71. The first dielectric sleeve 50 is used to insulate the inner conductor 11 from the first coupling hole 71 and form an effective capacitance. Based on this, capacitive coupling can be formed between the inner conductor 11 and the coupling seat 70.

[0129] Among them, the dielectric constant of the first dielectric sleeve 50 can be set according to the required effective dielectric constant and capacitance between the inner conductor 11 and the first coupling hole 71. The larger the dielectric constant of the first dielectric sleeve 50, the larger the capacitance between the inner conductor 11 and the first coupling hole 71, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0130] It should also be noted that the first end 311 is installed on the coupling seat 70, the coupling seat 70 supports the first end 311, and the first end 311 is electrically conductive with the coupling seat 70 (i.e., inductive coupling). As Figure 9As shown, in some embodiments, the first end 311 and the coupling seat 70 can be fastened and connected via a fastener 90 to achieve electrical conduction and inductive coupling. The fastener 90 can be, but is not limited to, a bolt. Of course, in other embodiments, the first end 311 and the coupling seat 70 can achieve electrical conduction and inductive coupling by, but is not limited to, abutting, plugging, clamping, welding, and the like.

[0131] By adopting the above solution, by sleeved the first dielectric sleeve 50 between the inner conductor 11 and the first coupling hole 71, the first dielectric sleeve 50 can be used as a medium between the inner conductor 11 and the first coupling hole 71, so that a capacitor can be formed between the inner conductor 11 and the first coupling hole 71, and stable and reliable capacitive coupling can be achieved between the inner conductor 11 and the first coupling hole 71. By installing the first end 311 on the coupling seat 70 in an electrically conductive manner, stable and reliable inductive coupling can be achieved between the first end 311 and the coupling seat 70. Therefore, the capacitive coupling between the inner conductor 11 and the first conductive member 31a can be conveniently, quickly and reliably achieved via the coupling seat 70 with a simplified structural design and coupling connection design. Moreover, based on the setting of the first dielectric sleeve 50, it is also beneficial to promote the stability of the relative state and relative position between the inner conductor 11 and the first coupling hole 71, and it can also form a reliable separation effect and insulation effect between the outer peripheral surface of the inner conductor 11 and the hole wall of the first coupling hole 71, and it can also effectively reduce the risk of the inner conductor 11 shaking relative to the first coupling hole 71 and contacting the hole wall of the first coupling hole 71, thereby helping to improve the reliability of the capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0132] Of course, in other embodiments, other coupling connection designs may be used to enable at least one of the inner conductor 11 and the first end 311 to be capacitively coupled to the coupling base 70 .

[0133] See also Figure 2 , Figure 7 , Figure 8 , Figure 9 In some embodiments of the present application, the filter includes a filter housing 100 , and the coupling seat 70 is disposed in the filter housing 100 and is integrally formed with the filter housing 100 .

[0134] It should be noted that the filter housing 100 has a closed inner cavity to achieve a shielding function and prevent signal leakage. The connector 10 is installed in the filter housing 100 so that the inner conductor 11 of the connector 10 is connected to the external device of the filter. The signal transmission component 30, the resonator 20, and the coupling seat 70 are all arranged in the filter housing 100.

[0135] The coupling seat 70 and the filter housing 100 are integrally formed.

[0136] By adopting the above solution, by integrally forming the coupling base 70 with the filter housing 100, on the one hand, the processing convenience and assembly convenience of the coupling base 70 can be improved, the connection reliability and connection strength between the coupling base 70 and the filter housing 100 can be improved, and the position accuracy of the coupling base 70 can be improved. On the other hand, it is convenient for the inner conductor 11 and the first conductive member 31a to achieve coupling connection through the coupling base 70 integrally formed on the filter housing 100, the coupling connection process between the inner conductor 11 and the first conductive member 31a can be simplified, and the relative positions and relative states among the inner conductor 11, the coupling base 70, and the first conductive member 31a can be facilitated, which is beneficial to the accuracy and stability of the filter indexes.

[0137] Of course, in other embodiments, the coupling base 70 can be detachably connected to the filter housing 100. For example, the coupling base 70 can be detachably connected to the filter housing 100 by, but not limited to, welding, crimping, bolt connection, etc.

[0138] Please refer to Figure 10 , Figure 11 , in some embodiments of the present application, the first conductive member 31a is provided with a second coupling hole 312. The connector 10 includes a conductor member 14. The extending direction of the conductor member 14 intersects the extending direction of the inner conductor 11. One end of the conductor member 14 is integrally connected to the inner conductor 11, and the other end of the conductor member 14 is inserted into the second coupling hole 312 and capacitively coupled to the first conductive member 31a.

[0139] It should be noted that the first conductive member 31a can be a tap structure or a low-pass structure. The first conductive member 31a can be a columnar structure, a rod-shaped structure (as shown in Figure 10 ), a composite structure with a sheet-shaped main body and a columnar or rod-shaped end (as shown in Figure 11 ), etc.

[0140] The inner conductor 11 extends linearly. The conductor member 14 is integrally connected to one end of the inner conductor 11 to omit the assembly process between the conductor member 14 and the inner conductor 11 and improve the assembly convenience between the conductor member 14 and the inner conductor 11. The extending direction of the conductor member 14 intersects the extending direction of the inner conductor 11, and the extending direction of the conductor member 14 is parallel to the extending direction of the first conductive member 31a. Based on this, the conductor member 14 and the inner conductor 11 can be arranged at an angle, and the conductor member 14 can be bent relative to the inner conductor 11 toward the first conductive member 31a side.

[0141] The second coupling hole 312 is provided on the end side of the first conductive member 31a close to the conductor member 14. The second coupling hole 312 is set as a blind hole (as shown in Figure 10 ) or a through hole (as shown in Figure 11As shown in the figure. The conductor member 14 is correspondingly arranged and aligned with the second coupling hole 312. One end of the conductor member 14 away from the inner conductor 11 is inserted into the second coupling hole 312. The conductor member 14 is capacitively coupled with the second coupling hole 312. Thus, capacitive coupling between the inner conductor 11 and the first conductive member 31a can be achieved via the conductor member 14.

[0142] By adopting the above solution, the conductor member 14 integrally connected to and intersecting with the inner conductor 11 can be inserted and capacitively coupled with the second coupling hole 312 of the first conductive member 31a, so as to conveniently, quickly and reliably achieve capacitive coupling between the inner conductor 11 of the connector 10 and the first conductive member 31a. Based on this, the reliability of the coupling between the inner conductor 11 and the first conductive member 31a can be improved, the connection design and connection components between the inner conductor 11 and the first conductive member 31a can be simplified, and the connection convenience between the inner conductor 11 and the first conductive member 31a can be improved.

[0143] In particular, since the conductor member 14 and the inner conductor 11 are integrally formed, the assembly process between the conductor member 14 and the inner conductor 11 can be simplified, the processing and forming convenience and connection strength between the conductor member 14 and the inner conductor 11 can be improved, which is beneficial to improving the reliability of the sequential connection of the inner conductor 11, the conductor member 14 and the second coupling hole 312.

[0144] Of course, in other embodiments, the conductor member 14 and the inner conductor 11 can be separately connected, and the conductor member 14 and the inner conductor 11 can be separately connected by, but not limited to, welding and other methods.

[0145] Please refer to Figure 10 、 Figure 11 , in some embodiments of the present application, the outer peripheral surface of the conductor member 14 is spaced from the hole wall of the second coupling hole 312.

[0146] By adopting the above solution, when the conductor member 14 is inserted and mated with the second coupling hole 312, the outer peripheral surface of the conductor member 14 can be spaced from the hole wall of the second coupling hole 312, so that air can be used as the medium between the outer peripheral surface of the conductor member 14 and the hole wall of the second coupling hole 312. Thus, it is convenient to form a capacitor between the conductor member 14 and the second coupling hole 312, and it is convenient to achieve stable and reliable capacitive coupling between the inner conductor 11 of the connector 10 and the first conductive member 31a.

[0147] It should be noted that when the second coupling hole 312 is a blind hole, that is, the second coupling hole 312 has a hole bottom, the end face of the conductor member 14 also needs to be spaced from the hole bottom of the second coupling hole 312.

[0148] Please refer to Figure 10 、 Figure 11, in some embodiments of the present application, a first dielectric sleeve 50 is sleeved between the conductor member 14 and the second coupling hole 312.

[0149] It should be noted that the first dielectric sleeve 50 is made of an insulating material. The first dielectric sleeve 50 is stably installed in the second coupling hole 312. The conductor member 14 is inserted into the first dielectric sleeve 50, so that the first dielectric sleeve 50 is sleeved between the conductor member 14 and the second coupling hole 312. The first dielectric sleeve 50 is used to insulate between the conductor member 14 and the second coupling hole 312 and form an effective capacitance.

[0150] Among them, the dielectric constant of the first dielectric sleeve 50 can be set according to the required effective dielectric constant and capacitance between the conductor member 14 and the second coupling hole 312. The larger the dielectric constant of the first dielectric sleeve 50, the larger the capacitance between the conductor member 14 and the second coupling hole 312, and the better the suppression performance of the equivalent low-pass between the inner conductor 11 and the first conductive member 31a of the connector 10.

[0151] By adopting the above scheme, in the case where the conductor member 14 is inserted and matched with the second coupling hole 312, a first dielectric sleeve 50 can be sleeved between the conductor member 14 and the second coupling hole 312, so that the outer peripheral surface of the conductor member 14 and the hole wall of the second coupling hole 312 can use the first dielectric sleeve 50 as a medium, thereby facilitating the formation of a capacitance between the conductor member 14 and the second coupling hole 312 and facilitating the realization of stable and reliable capacitive coupling between the conductor member 14 and the second coupling hole 312. And, based on the setting of the first dielectric sleeve 50, it is also beneficial to promote the stability of the relative state and relative position between the conductor member 14 and the second coupling hole 312, and a reliable separation effect and insulation effect can also be formed between the outer peripheral surface of the conductor member 14 and the hole wall of the second coupling hole 312, and the risk that the conductor member 14 shakes relative to the second coupling hole 312 and contacts the hole wall of the second coupling hole 312 can be effectively reduced, thereby being beneficial to improving the reliability of the capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0152] Please refer to Figure 12 , in some embodiments of the present application, the inner conductor 11 includes a plurality of conductor segments 112 arranged at intervals along its extending direction, and a dielectric segment 113 abutted between two adjacent conductor segments 112, and capacitive coupling occurs between two adjacent conductor segments 112.

[0153] It should be noted that when the inner conductor 11 is linearly extended, the inner conductor 11 may include a plurality of conductor segments 112 and at least one dielectric segment 113. The plurality of conductor segments 112 are arranged at intervals along the extending direction of the inner conductor 11, and a dielectric segment 113 is arranged between every two adjacent conductor segments 112.

[0154] The adjacent conductor segments 112 and dielectric segments 113 support each other. The entire inner conductor 11 can also be supported via the first end 311 that is inserted and mated with it, or the coupling base 70, etc. Based on this, the conductor segments 112 and dielectric segments 113 of the inner conductor 11 can stabilize their positions and states via abutment. Of course, in some embodiments, the adjacent conductor segments 112 and dielectric segments 113 can be stably connected by, but not limited to, bonding and other means.

[0155] The dielectric segment 113 is made of an insulating material. The dielectric segment 113 is used to insulate between two adjacent conductor segments 112 and form an effective capacitance, so that capacitive coupling can be formed between two adjacent conductor segments 112.

[0156] By adopting the above solution, in the case where the inner conductor 11 is linearly extended, the inner conductor 11 can be made to include a plurality of conductor segments 112 and at least one dielectric segment 113, and one dielectric segment 113 is arranged between every two adjacent conductor segments 112, so that a capacitance can be formed between two adjacent conductor segments 112 with the dielectric segment 113 as the medium, thereby facilitating the formation of stable and reliable capacitive coupling between two adjacent conductor segments 112. Based on this, the inner conductor 11 of the connector 10 itself can form one - stage or multi - stage capacitive coupling, thereby facilitating the formation of more - stage capacitive coupling between the inner conductor 11 of the connector 10 and the first conductive member 31a, facilitating the optimization of the coupling connection design between the inner conductor 11 of the connector 10 and the first conductive member 31a, and facilitating the optimization of the equivalent low - pass suppression performance between the inner conductor 11 of the connector 10 and the first conductive member 31a. This embodiment is suitable for being compatibly arranged with related embodiments where "the inner conductor 11 is linearly extended".

[0157] Please refer to Figure 12 , in some embodiments of the present application, in the case where the inner conductor 11 includes a plurality of conductor segments 112 and at least one dielectric segment 113, the filter includes a coupling base 70. The coupling base 70 is provided with a first coupling hole 71 corresponding to the inner conductor 11. The inner conductor 11 is inserted into the first coupling hole 71, and the outer peripheral surface of the inner conductor 11 abuts and cooperates with the hole wall of the first coupling hole 71. The first conductive member 31a has a first end 311, and the first end 311 is electrically conductively mounted on the coupling base 70.

[0158] It should be noted that, in the case where the inner conductor 11 includes a plurality of conductor segments 112 and at least one dielectric segment 113, that is, on the basis of the previous embodiment, the coupling base 70 can be arranged at the intersection position of the inner conductor 11 and the first conductive member 31a.

[0159] On one side of the coupling base 70 facing the inner conductor 11, there is a first coupling hole 71. The first coupling hole 71 is arranged corresponding to and in alignment with the inner conductor 11 along the extending direction of the inner conductor 11. The first coupling hole 71 is a blind hole. The inner conductor 11 is inserted into the first coupling hole 71, and the outer peripheral surface of the inner conductor 11 abuts and cooperates with the hole wall of the first coupling hole 71, so that the inner conductor 11 is inductively coupled to the coupling base 70.

[0160] The first end 311 is installed on the coupling base 70. The coupling base 70 supports the first end 311, and the first end 311 is electrically conducted (i.e., inductively coupled) with the coupling base 70. As Figure 12 shown, in some embodiments, the first end 311 and the coupling base 70 can be fixedly connected and electrically conducted and inductively coupled via a fastener 90. Among them, the fastener 90 can be but is not limited to a bolt. Of course, in other embodiments, the first end 311 and the coupling base 70 can be electrically conducted and inductively coupled by but not limited to abutting, plugging, clamping, welding and other methods.

[0161] By adopting the above scheme, in the case where the inner conductor 11 includes a plurality of conductor segments 112 and at least one dielectric segment 113, the inner conductor 11 can be inserted into the first coupling hole 71 of the coupling base 70, and the outer peripheral surface of the inner conductor 11 abuts and cooperates with the hole wall of the first coupling hole 71, so as to realize stable and reliable inductive coupling between the inner conductor 11 and the coupling base 70. And by electrically conducting the installation of the first end 311 on the coupling base 70, it is convenient to realize stable and reliable inductive coupling between the first end 311 and the coupling base 70. Thus, the inner conductor 11, the coupling base 70 and the first conductive member 31a can be inductively coupled in sequence, and it is convenient to promote capacitive coupling between the inner conductor 11 and the first conductive member 31a through capacitive coupling between adjacent two conductor segments 112 of the inner conductor 11 itself, so as to conveniently, quickly and reliably realize capacitive coupling between the inner conductor 11 and the first conductive member 31a.

[0162] Please refer to Figure 1 、 Figure 2 、 Figure 3 , in some embodiments of the present application, the connector 10, the signal conduction assembly 30 and the resonator 20 are arranged on the same straight line. It should be noted that, as Figure 2 shown, from a top view perspective, the connector 10, the signal conduction assembly 30 and the resonator 20 are arranged in sequence and on a straight line.

[0163] By adopting the above scheme, by arranging the connector 10, the signal conduction assembly 30 and the resonator 20 on the same straight line, the length of the link from the connector 10 to the resonator 20 can be greatly shortened, which is beneficial to the miniaturization, simplification and light weight of the filter.

[0164] Please refer to Figure 1 and Figure 2 and Figure 3 In some embodiments of the present application, the signal conduction component 30 includes a signal conductor 31, and the signal conductor 31 is arranged to extend linearly.

[0165] It should be noted that in this embodiment, the signal conduction component 30 only includes one signal conductor 31. One end of the signal conductor 31 is capacitively coupled to the inner conductor 11 of the connector 10, and the other end of the signal conductor 31 is inductively or capacitively coupled to the resonator 20. The signal conductor 31 extends linearly from the connector 10 to the resonator 20, that is, the signal conductor 31 has a linear extension structure.

[0166] By adopting the above solution, by making the signal conduction component 30 only include one signal conductor 31 and making the signal conductor 31 extend linearly from the connector 10 to the resonator 20, the structure of the signal conduction component 30 can be simplified to the greatest extent, and the number of components of the signal conduction component 30 can be reduced to the greatest extent. Thus, on the basis of maintaining the suppression performance and filtering performance of the link from the connector 10 to the resonator 20 of the filter, the structure of the link can be simplified to the greatest extent and the length of the link can be shortened, which is beneficial to the miniaturization, simplicity and light weight of the filter.

[0167] Moreover, by arranging the signal conductor 31 to extend linearly, it is also convenient for the signal conductor 31 to be formed by linear extension conveniently and quickly. Based on this, the processing and forming convenience of the signal conductor 31 can be improved, and the connection, assembly and layout of the signal conductor 31 can be facilitated.

[0168] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the signal conductor 31 has a low-pass structure.

[0169] It should be noted that according to the needs of signal energy transmission, suppression and filtering, the signal conductor 31 can be a low-pass structure. Among them, the low-pass structure can be a sheet low-pass, a sugar gourd-shaped low-pass, etc. The specific structure setting of the low-pass structure is not limited in this embodiment.

[0170] By adopting the above solution, by making the signal conductor 31 have a low-pass structure, on the basis of simplifying the link structure and shortening the link length, the signal conductor 31 can be made to have a signal transmission function and a low-pass filtering function. Based on this, it is beneficial to maintain the suppression performance and filtering performance of the link at the signal conductor 31.

[0171] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the signal conductor 31 has a tap structure.

[0172] It should be noted that according to the need for signal energy transmission, the signal conductor 31 can be a tap structure. Among them, the tap structure can be a sheet structure, a columnar structure, a rod-shaped structure, a linear structure, etc., and this embodiment does not limit it temporarily.

[0173] By adopting the above solution, by making the signal conductor 31 a tap structure, on the basis of simplifying the link structure and shortening the link length, the signal conductor 31 can be made to have a signal transmission function. Based on this, it is beneficial to maintain the signal transmission reliability of the link at the signal conductor 31.

[0174] Please refer to Figure 2 、 Figure 3 In some embodiments of the present application, a part of the signal conductor 31 is a tap structure, and another part of the signal conductor 31 is a low-pass structure.

[0175] It should be noted that according to the needs of signal energy transmission, suppression, and filtering, a part of the signal conductor 31 can be a tap structure while another part is a low-pass structure. For example, the part of the signal conductor 31 close to the connector 10 is a tap structure, while the part of the signal conductor 31 close to the resonator 20 is a low-pass structure; or, the part of the signal conductor 31 close to the connector 10 is a low-pass structure, while the part of the signal conductor 31 close to the resonator 20 is a tap structure. Among them, in the signal conductor 31, the proportion of the tap structure and the low-pass structure can be set as required. For example, the tap structure and the low-pass structure can each account for half.

[0176] By adopting the above solution, by making a part of the signal conductor 31 a tap structure while another part is a low-pass structure, on the basis of simplifying the link structure and shortening the link length, it can be made that the part of the signal conductor 31 that is a tap structure only has a signal transmission function, and the part of the signal conductor 31 that is a low-pass structure has both a signal transmission function and a low-pass filtering function. Based on this, it is beneficial to comprehensively optimize the signal transmission reliability, suppression performance, and filtering performance of the link at the signal conductor 31.

[0177] Please refer to Figure 2 In some embodiments of the present application, the signal conduction assembly 30 includes two signal conductors 31, and both of the two signal conductors 31 extend linearly and are on the same straight line.

[0178] It should be noted that in this embodiment, the signal conduction assembly 30 includes two signal conductors 31 connected in sequence, wherein one signal conductor 31 is capacitively coupled to the inner conductor 11 of the connector 10, and the other signal conductor 31 is inductively coupled or capacitively coupled to the resonator 20.

[0179] The two signal conductors 31 are respectively arranged to extend linearly, and the two signal conductors 31 are arranged on a straight line, so that the two signal conductors 31 extend linearly from the connector 10 to the resonator 20.

[0180] By adopting the above scheme, the signal conduction assembly 30 can include two signal conductors 31 arranged on a straight line. Based on this, the structure of the signal conduction assembly 30 can be simplified, the number of components of the signal conduction assembly 30 can be reduced, the structure of the link of the filter from the connector 10 to the resonator 20 can be simplified, and the length of the link of the filter from the connector 10 to the resonator 20 can be greatly shortened, which is beneficial to the miniaturization, simplicity and light weight of the filter.

[0181] Moreover, by arranging the two signal conductors 31 to extend linearly respectively, it is also convenient for the two signal conductors 31 to be formed by linear extension conveniently and quickly. Based on this, the processing and forming convenience of each of the two signal conductors 31 can be improved, and the connection, assembly and layout between the two signal conductors 31, between the signal conductor 31 and the connector 10, and between the signal conductor 31 and the resonator 20 can be facilitated.

[0182] Please refer to Figure 2 , in some embodiments of the present application, one of the signal conductors 31 is a tap structure, and the other signal conductor 31 is a low-pass structure.

[0183] It should be noted that in the case where the signal conduction assembly 30 includes two signal conductors 31, one of the signal conductors 31 is a tap structure, and the other signal conductor 31 is a low-pass structure. In some embodiments, the signal conductor 31 capacitively coupled to the inner conductor 11 is a tap structure, and the signal conductor 31 coupled to the resonator 20 is a low-pass structure. In other embodiments, the signal conductor 31 capacitively coupled to the inner conductor 11 is a low-pass structure, and the signal conductor 31 coupled to the resonator 20 is a tap structure. Among them, the tap structure can be a sheet structure, a columnar structure, a rod-like structure, a linear structure, etc., and this embodiment does not limit this. Among them, the low-pass structure can be a sheet low-pass, a sugar-loaf low-pass, etc., and this embodiment does not limit the specific structure setting of the low-pass structure.

[0184] By adopting the above solution, by making the two signal conductors 31 be a tap structure and a low-pass structure respectively, the signal conduction component 30 can have a signal transmission function via the signal conductor 31 with a tap structure, and the signal conduction component 30 can have a signal transmission function and a low-pass filtering function via the signal conductor 31 with a low-pass structure. Based on this, the low-pass structure of the signal conduction component 30 and the "equivalent low-pass between the inner conductor 11 and the first conductor 31a" can be comprehensively used to jointly optimize the suppression performance and filtering performance of the link of the filter from the connector 10 to the resonator 20.

[0185] Please refer to Figure 2 , in some embodiments of the present application, when the signal conduction component 30 includes two signal conductors 31, there is capacitive coupling between the two signal conductors 31.

[0186] By adopting the above solution, when the signal conduction component 30 includes two signal conductors 31, the adjacent ends of the two signal conductors 31 can be plugged and capacitive coupled, or other methods can be used for capacitive coupling between the adjacent ends of the two signal conductors 31 (for example, by using insulating gaskets and insulating screws for connection). Based on this, the coupling connection between the two signal conductors 31 can be conveniently, quickly and reliably realized, and the inductive coupling welding between the two signal conductors 31 can be simplified, the number of welding points and the welding space reserved for the filter can be reduced, the connection convenience and connection reliability of the coupling connection between the two signal conductors 31 can be improved, the risk of coupling failure due to the cracking of the welding points between the two signal conductors 31 in extreme environments can be reduced, and the structural reliability of the signal conduction component 30 and the filter can be improved.

[0187] Please refer to Figure 2 , Figure 3 , in some embodiments of the present application, the signal conductor 31 is a sheet metal structure.

[0188] By adopting the above solution, the sheet metal signal conductor 31 can be processed and formed from a sheet metal substrate. Based on this, the processing convenience and structural strength of the signal conductor 31 can be improved, the detailed structure of the signal conductor 31 can be easily integrally formed, and the assembly convenience of the signal conductor 31 with other components can be improved. Moreover, making the signal conductor 31 be a sheet metal structure is also beneficial to reducing the space occupied by the signal conductor 31, thereby being beneficial to the miniaturization, simplification and light weight of the filter.

[0189] Please refer to Figure 1 , Figure 2 , Figure 3 , in some embodiments of the present application, the signal conduction component 30 is capacitive coupled with the resonator 20.

[0190] By adopting the above solution, the end of the signal conduction component 30 close to the resonator 20 can be inserted and fitted with the resonator 20 and capacitively coupled, or other capacitive coupling methods can be adopted between the end of the signal conduction component 30 close to the resonator 20 and the resonator 20 (for example, by using insulating gaskets and insulating screws for connection). Based on this, the coupling connection between the signal conduction component 30 and the resonator 20 can be conveniently, quickly and reliably realized, the inductive coupling welding between the signal conduction component 30 and the resonator 20 can be simplified, the number of welding points and the welding space reserved for the filter can be reduced, the connection convenience and connection reliability of the coupling connection between the signal conduction component 30 and the resonator 20 can be improved, the risk of coupling failure due to the cracking of the welding points between the signal conduction component 30 and the resonator 20 in extreme environments can be reduced, and the structural reliability of the filter can be improved. Moreover, by capacitively coupling the signal conduction component 30 and the resonator 20, it is also beneficial to expand the bandwidth of the filter and achieve wideband operation.

[0191] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter, characterized in that: The filter comprises: Connectors, including inner conductors; Resonator; A signal conducting component, one end of which is capacitively coupled to the inner conductor of the connector, and the other end of which is coupled and connected to the resonator, wherein the signal conducting component includes at most two signal conducting members connected in sequence.

2. The filter according to claim 1, characterized in that The signal conducting member capacitively coupled with the inner conductor is a first conducting member, the inner conductor of the connector is extended in a straight line, and the extending direction of the inner conductor intersects with the extending direction of the first conducting member.

3. The filter according to claim 2, characterized in that The filter includes an insulating fixing member, the first conductive member is passed through the insulating fixing member, and has a first end suspended on the end side of the inner conductor; one of the inner conductor and the first end is provided with a plug-in portion, and the other one is provided with a plug-in hole, and the plug-in portion is plug-fitted with the plug-in hole and capacitively coupled.

4. The filter according to claim 3, characterized in that The outer peripheral surface of the plug-in portion is spaced apart from the hole wall of the plug-in hole; Or, a first dielectric sleeve is sleeved between the plug-in portion and the plug-in hole; Or, the filter further comprises a coupling tube, the coupling tube is installed in the plug hole and coupled to the plug hole, the plug part is inserted in the coupling tube, and the outer peripheral surface of the plug part is spaced apart from the inner tube wall of the coupling tube; Alternatively, the filter further comprises a coupling tube, the coupling tube is mounted on the plug hole and coupled to the plug hole, the plug part is inserted into the coupling tube, and a first dielectric sleeve is sleeved between the plug part and the coupling tube.

5. The filter according to claim 2, characterized in that The filter comprises a coupling seat, the coupling seat is provided with a first coupling hole corresponding to the inner conductor, the inner conductor is inserted into the first coupling hole and coupled to the coupling seat, the first conductive member has a first end, the first end is mounted on the coupling seat and coupled to the coupling seat; At least one of the inner conductor and the first end is capacitively coupled to the coupling seat.

6. The filter according to claim 5, characterized in that A first dielectric sleeve is sleeved between the inner conductor and the first coupling hole, the coupling seat is provided with a limiting groove, the first end is mounted in the limiting groove, and a second dielectric sleeve is sleeved on the outer periphery of the first end; Or, the outer circumference of the inner conductor is in abutment with the hole wall of the first coupling hole, the coupling seat is provided with a limiting groove, the first end is installed in the limiting groove, and the outer circumference of the first end is provided with a second dielectric sleeve; Alternatively, a first dielectric sleeve is provided between the inner conductor and the first coupling hole, and the first end is electrically conductively mounted on the coupling seat.

7. The filter according to claim 5, characterized in that The filter comprises a filter housing, and the coupling seat is arranged in the filter housing and is integrally formed with the filter housing.

8. The filter according to claim 2, characterized in that The first conductive member is provided with a second coupling hole, the connector comprises a conductor member, the extension direction of the conductor member intersects with the extension direction of the inner conductor, one end of the conductor member is integrally connected to the inner conductor, and the other end of the conductor member is inserted into the second coupling hole and capacitively coupled with the first conductive member.

9. The filter according to claim 8, characterized in that The outer peripheral surface of the conductor member is spaced apart from the hole wall of the second coupling hole; Alternatively, a first dielectric sleeve is provided between the conductor and the second coupling hole.

10. The filter according to claim 2, characterized in that The inner conductor comprises a plurality of conductor segments arranged at intervals along its extending direction, and a dielectric segment abutting between two adjacent conductor segments, and the two adjacent conductor segments are capacitively coupled.

11. The filter according to claim 10, characterized in that The filter includes a coupling seat, the coupling seat is provided with a first coupling hole corresponding to the inner conductor, the inner conductor is inserted into the first coupling hole, the outer peripheral surface of the inner conductor is abutted against the hole wall of the first coupling hole, and the first conductive member has a first end, and the first end is electrically conductively mounted on the coupling seat.

12. The filter according to any one of claims 1 to 11, characterized in that The connector, the signal transmission component and the resonator are arranged on the same straight line.

13. The filter according to any one of claims 1 to 11, characterized in that The signal conducting component comprises a signal conducting member, and the signal conducting member is arranged to extend in a straight line.

14. The filter according to claim 13, characterized in that The signal transmission element is a low-pass structure; Or, the signal conducting element is a tap structure; Alternatively, a portion of the signal conductive element is a tap structure, and another portion of the signal conductive element is a low-pass structure.

15. The filter according to any one of claims 1 to 11, characterized in that The signal conducting component includes two signal conducting members, and the two signal conducting members are both arranged to extend in a straight line and are located on the same straight line.

16. The filter according to claim 15, characterized in that One of the signal conducting components is a tap structure, and the other signal conducting component is a low-pass structure; And / or, there is capacitive coupling between the two signal conducting elements.

17. The filter according to any one of claims 1 to 11, characterized in that The signal conducting component is a sheet metal structure.

18. The filter according to any one of claims 1 to 11, characterized in that The signal conducting component is capacitively coupled to the resonator.

Images