CN114614223B - Base station antenna and cavity filter - Google Patents
Base station antenna and cavity filter Download PDFInfo
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- CN114614223B CN114614223B CN202210286136.8A CN202210286136A CN114614223B CN 114614223 B CN114614223 B CN 114614223B CN 202210286136 A CN202210286136 A CN 202210286136A CN 114614223 B CN114614223 B CN 114614223B
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- 238000005859 coupling reaction Methods 0.000 claims description 42
- 238000006880 cross-coupling reaction Methods 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 18
- 230000008054 signal transmission Effects 0.000 claims description 15
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The application relates to a base station antenna and a cavity filter, which have fewer single parts and can ensure the consistency of indexes in the production process; meanwhile, the resonant structure can be assembled and connected with the shell only by using the mounting part of the resonant structure aligned with the partition, and the resonant structure is fixed on the partition by using the mounting part, so that the assembly is simple and convenient, and the assembly efficiency is high.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a base station antenna and a cavity filter.
Background
With the continuous development of mobile communication technology, the application of cavity filters with small volume and low loss in base station antennas is increasing. The traditional cavity filter is more in fittings, so that the consistency of indexes in the production process is difficult to ensure, and the assembly complexity is increased.
Disclosure of Invention
Based on the above, it is necessary to provide a base station antenna and a cavity filter aiming at the problems that the consistency of indexes in the production process is difficult to ensure and the assembly is complex.
The technical scheme is as follows:
in one aspect, a cavity filter is provided, comprising:
the shell is provided with an installation cavity and a partition piece which is arranged in the installation cavity and connected with the shell, and the partition piece is provided with an installation part which extends along the assembly direction; a kind of electronic device with high-pressure air-conditioning system
The resonant structure is arranged in the mounting cavity and comprises at least two rows of resonant assemblies which are integrally formed, the resonant assemblies are distributed along a signal transmission path, and the adjacent two rows of resonant assemblies are connected in a coupling mode and fixed on the separating piece through the mounting part.
The technical scheme is further described as follows:
in one embodiment, two adjacent rows of resonant assemblies are disposed at an included angle.
In one embodiment, two adjacent columns of the resonant assemblies are arranged vertically; or two adjacent columns of the resonant assemblies are arranged in parallel.
In one embodiment, the mounting portion is provided with a first slot extending along the assembly direction, and two adjacent rows of resonant assemblies are coupled and connected to form a second slot for being in plug-in fit with the first slot.
In one embodiment, the partition is further provided with a bearing portion for bearing engagement with the resonant structure.
In one embodiment, the housing comprises an end cover and a housing body integrally formed with the partition, the housing body is provided with the mounting cavity and an end opening communicated with the mounting cavity, and the end cover is connected with the housing body to close the end opening.
In one embodiment, each column of the resonant assemblies comprises at least two resonant units which are arranged at intervals along the assembly direction and are arranged at intervals on the inner side wall of the mounting cavity, two adjacent resonant units in the same column of the resonant assemblies are coupled and connected, and each resonant unit comprises a frequency tuning part and a coupling tuning part which are electrically connected;
the shell body is also provided with at least two first adjusting holes communicated with the mounting cavity, the at least two first adjusting holes are arranged in one-to-one correspondence with the at least two frequency tuning parts, the cavity filter further comprises at least two frequency tuning parts, the at least two frequency tuning parts are arranged in one-to-one correspondence with the at least two first adjusting holes and are movably matched with the at least two first adjusting holes, and the at least two first adjusting holes are used for adjusting the distance between the frequency tuning parts and the corresponding frequency tuning parts so as to adjust the frequency;
and/or, the shell body is further provided with at least two second adjusting holes communicated with the mounting cavity, the at least two second adjusting holes are arranged in one-to-one correspondence with the at least two coupling tuning parts, the cavity filter further comprises at least two coupling tuning parts, the at least two coupling tuning parts are arranged in one-to-one correspondence with the at least two second adjusting holes and are movably matched with the at least two coupling tuning parts, and the at least two coupling tuning parts are used for adjusting the distance between the coupling tuning parts and the corresponding coupling tuning parts so as to adjust the coupling degree.
In one embodiment, the cavity filter further comprises an inductive cross-coupling for electrically connecting non-adjacent two of the resonator elements in the same column of the resonator assembly.
In one embodiment, the cavity filter further comprises capacitive cross-couplings; the capacitive cross coupling piece is used for capacitively coupling two non-adjacent resonant units in the same column of the resonant assembly, and/or the capacitive cross coupling piece is used for capacitively coupling two resonant units in two adjacent columns of the resonant assembly.
In one embodiment, the cavity filter further comprises an input connector and an output connector, the shell body is further provided with a first mounting hole and a second mounting hole which are communicated with the mounting cavity, the input connector is inserted into the first mounting hole and is electrically connected with the resonance unit at the head end of the signal transmission path, and the output connector is inserted into the second mounting hole and is electrically connected with the resonance unit at the tail end of the signal transmission path.
In one embodiment, the cavity filter further includes a first insulating sleeve and a second insulating sleeve, the first insulating sleeve is installed in the first installation hole and sleeved on the outer side wall of the input connector, and the second insulating sleeve is installed in the second installation hole and sleeved on the outer side wall of the output connector.
In another aspect, a base station antenna is provided, including the cavity filter.
The base station antenna and the cavity filter in the embodiment have the advantages that the number of single parts is small, and the consistency of indexes can be ensured in the production process; meanwhile, the resonant structure can be assembled and connected with the shell only by using the mounting part of the resonant structure aligned with the partition, and the resonant structure is fixed on the partition by using the mounting part, so that the assembly is simple and convenient, and the assembly efficiency is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a cavity filter according to an embodiment;
FIG. 2 is an exploded view of the cavity filter of FIG. 1;
FIG. 3 is a schematic diagram illustrating the assembly of the housing of the cavity filter of FIG. 1 and the resonant structure at a viewing angle;
FIG. 4 is a schematic diagram illustrating the assembly of the housing of the cavity filter of FIG. 1 from another perspective with respect to the resonant structure;
FIG. 5 is a schematic structural diagram of a resonant structure of the cavity filter of FIG. 1;
FIG. 6 is a schematic view of the housing of the cavity filter of FIG. 1;
fig. 7 is a schematic structural diagram of the housing of the cavity filter of fig. 1 at another view angle.
Reference numerals illustrate:
100. a housing; 110. a mounting cavity; 120. a partition; 121. a first slot; 122. a support part; 130. a housing body; 131. an end opening; 132. a first adjustment aperture; 133. a first mounting hole; 134. a second mounting hole; 140. an end cap; 200. a resonant structure; 210. a resonant assembly; 211. a resonance unit; 220. a second slot; 230. an inductive cross-coupling; 240. a capacitive cross-coupling; 300. a frequency tuning element; 400. an input connector; 500. an output joint; 600. a first insulating sleeve; 700. and a second insulating sleeve.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In one embodiment, a base station antenna is provided that includes a cavity filter such that a signal can be filtered using the cavity filter.
As shown in fig. 1 and 2, the cavity filter optionally includes a housing 100 and a resonant structure 200.
As shown in fig. 2 to 4, in which the housing 100 is provided with a mounting chamber 110 and a partition 120 provided in the mounting chamber 110 and connected to the housing 100, the mounting chamber 110 can be partitioned into different chambers by the partition 120. And, a mounting portion extending in the fitting direction on the partitioning member 120.
Wherein the separator 120 may be a plate-like or thin-walled structure. The location of the divider 120 within the mounting cavity 110 may be flexibly designed or adjusted according to the actual mounting requirements.
As shown in fig. 2 to 4, wherein the resonant structure 200 is mounted within the mounting cavity 110. The resonant structure 200 is manufactured by adopting an integrated molding process such as extrusion, die casting and the like, so that the processing cost can be saved, the number of single parts can be reduced, the consistency of indexes in the production process can be guaranteed, the installation is convenient, and the assembly efficiency is improved.
As shown in fig. 5, in particular, the resonant structure 200 includes at least two columns of resonant assemblies 210. At least two rows of resonant assemblies 210 are distributed along the signal transmission path, and two adjacent rows of resonant assemblies 210 are coupled together, so that signals can be transmitted between the resonant assemblies 210 as required. Moreover, when the two adjacent resonant assemblies 210 are fixed on the partition 120 through the mounting portion, and thus, when the resonant structure 200 is assembled with the housing 100, only the two adjacent resonant assemblies 210 are aligned to the mounting portion, and a pushing force is applied to the resonant structure 200, so that the resonant structure 200 can be pushed into the mounting cavity 110 along the assembly direction, until the resonant structure 200 completely enters the mounting cavity 110, the resonant structure 200 and the partition 120 are stably and reliably connected and fixed by the mounting portion, and the resonant structure 200 and the housing 100 can be stably and reliably assembled into a whole.
The surface of the resonant structure 200 may be coated with silver, copper, or the like by electroless plating, electroplating, or the like, so as to enhance the signal transmission effect.
The cavity filter of the embodiment has the advantages that the number of single parts is small, and the consistency of indexes can be ensured in the production process; meanwhile, only two adjacent rows of resonant assemblies 210 of the resonant structure 200 are aligned to the mounting part of the partition 120, and the resonant structure 200 and the partition 120 are stably and reliably connected and fixed by using the mounting part, so that the resonant structure 200 and the shell 100 can be assembled and connected, the assembly is simple and convenient, and the assembly efficiency is high.
It should be noted that the number of the columns of the resonant assembly 210 may be flexibly designed or adjusted according to the actual use requirement or design requirement, which is not limited herein.
The connection and fixation between the mounting portion and the resonant structure 200 may be achieved by a plug-in fit manner, for example, a first slot 121 extending along the assembly direction is provided on the mounting portion, a second slot 220 plug-in fitted with the first slot 121 is provided on two adjacent rows of resonant assemblies 210, and the assembly connection between the resonant structure 200 and the housing 100 is achieved by the plug-in fit between the second slot and the first slot; the assembly connection between the resonant structure 200 and the housing 100 can be realized by means of the clamping fit, for example, the mounting portion is set to be a clamping strip extending along the assembly direction, clamping grooves are formed in two adjacent rows of resonant assemblies 210, and the clamping fit between the clamping strip and the clamping groove 220 is utilized to realize the assembly connection between the resonant structure 200 and the housing 100, so that the resonant structure 200 can be moved into the mounting cavity 110 along the extending direction of the mounting portion, and the resonant structure 200 and the partition 120 can be stably and reliably connected into a whole.
As shown in fig. 6 and 7, in order to ensure the stability of the installation of the resonant structure 200, the supporting portion 122 may be provided on the partition 120, and the resonant structure 200 may be supported by the supporting portion 122 and the supporting portion of the resonant structure 200, so that the resonant structure 200 may not be inclined or deviated. And, utilize the supporting portion 122 can also insert the installation cavity 110 for resonant structure 200 and guide, guarantee that resonant structure 200 gets into in the installation cavity 110 with accurate gesture, the assembly progress is high.
Specifically, the supporting portion 122 may be disposed at a position adjacent to the lower portion of the mounting portion, and the supporting portion 122 may be disposed both below and above the mounting portion adjacent to the lower portion.
The supporting portion 122 may be a supporting boss, a supporting tray, etc., and only needs to support and guide the resonant structure 200.
Of course, in the actual use process, after the mounting portion fixes the resonant structure 200 on the partition 120, in order to ensure the stability of assembling the resonant structure 200 and the partition 120, the resonant structure 200 may be further clamped by means of a wedge or other components.
The housing 100 and the resonant structure 200 may be formed as a single cavity filter, or may be formed as a multi-pass filter by arranging mirror images to form a plurality of pass bands.
Wherein, two adjacent resonant assemblies 210 can be flexibly designed or adjusted according to actual design requirements or assembly requirements.
Optionally, two adjacent rows of resonant assemblies 210 are disposed at an included angle. In this way, two adjacent rows of resonant assemblies 210 can be located on the same plane, that is, the whole resonant structure 200 can be integrally formed through extrusion, die casting and other forming processes, and bending, splicing or welding operations are not needed, so that assembly errors are reduced and assembly time is saved.
Of course, two adjacent rows of resonant assemblies 210 may have a certain included angle instead of being on the same plane, so that the space of each angle of the installation cavity 110 can be fully utilized, which is beneficial to reducing the size of the housing 100 and further beneficial to miniaturizing the cavity filter.
Optionally, two adjacent rows of resonant assemblies 210 are disposed perpendicular to each other, so that the space utilization of each angle of the mounting cavity 110 is the highest, which can effectively reduce the size of the housing 100, and thus effectively reduce the volume of the cavity filter. In actual use, each resonant assembly 210 of the whole resonant structure 200 can be repeatedly bent, so that two adjacent resonant assemblies 210 are mutually perpendicular, and the space of the mounting cavity 110 in the length direction and the height direction can be fully utilized, which is beneficial to miniaturization of the housing 100.
Optionally, two adjacent rows of resonant assemblies 210 are disposed parallel to each other, so that the resonant structure 200 is convenient to process, the integrated design of the resonant structure 200 is convenient, bending, splicing or welding operations are not required, and assembly errors are reduced and assembly man-hours are saved.
The casing 100 may be a casing structure with an internal cavity and a closed periphery, and may be made of metal, and the surface of the casing may be covered with silver, copper, or the like by corresponding treatment, for example, chemical plating or electroplating, so as to ensure the shielding effect of the casing 100 and be used as a grounding end.
As shown in fig. 1 and 2, in the embodiment of the present application, the housing 100 includes an end cap 140 and a housing body 130.
As shown in fig. 6, the housing body 130 is provided with a mounting cavity 110 and an end opening 131 communicating with the mounting cavity 110, that is, the housing body 130 is a frame structure with four sides closed and an end having the end opening 131. In addition, the shell body 130 and the partition 120 can be integrally formed by adopting metal material forming processes such as extrusion or die casting, so that the number of single parts can be further reduced, the cost is saved, the consistency of indexes is ensured in the production process, and the assembly difficulty is reduced.
Of course, in other embodiments, the housing body 130 may be formed from a different metal sheet by a splicing or welding process. The housing body 130 and the partition 120 may be assembled and connected by splicing or welding after being separately molded.
Wherein an end cap 140 is coupled with the case body 130 to close the end opening 131. In this way, the resonant structure 200 can be assembled into the installation cavity 110 through the end opening 131, and after the assembly connection of the resonant structure 200 and the housing 100 is completed, the end cover 140 and the housing body 130 can be connected and fixed by welding, screwing or the like, so that the installation cavity 110 can be closed to obtain a good shielding effect.
Specifically, the case body 130 may be open at both ends, and the end caps 140 may be two, thereby closing the end openings 131 at both ends, respectively. The end cap 140 may be made of the same metal material as the case body 130, and the surface of the end cap 140 may be covered with silver, copper, or the like.
As shown in fig. 5, in one embodiment, each of the resonant assemblies 210 includes at least two resonant cells 211 spaced apart in the assembly direction, and at least two resonant cells 211 are each spaced apart from the inner sidewall of the installation cavity 110, such that each resonant cell 211 can form a unit resonant cavity with the corresponding air cavity. In addition, two adjacent resonant units 211 in the same column of resonant assemblies 210 are coupled and connected, and the coupling connection of the adjacent resonant assemblies 210 is combined, so that the unit resonant cavities are distributed along the signal transmission path and are coupled and connected with each other, and the electric signal can be smoothly transmitted.
It should be noted that, the coupling connection between two adjacent rows of resonant assemblies 210 may be implemented by a metal strip connection manner, that is, the metal strip is made of the same material as the resonant unit 211, which is favorable for integrally forming the whole resonant structure 200, and the resonant structure 200 may be obtained by directly processing a metal plate material after extrusion, die casting and other processes. Of course, in other embodiments, the coupling connection between two adjacent rows of resonant assemblies 210 may be implemented by other physical connection structures, so long as the coupling connection between two adjacent rows of resonant assemblies 210 is implemented.
It is understood that the number of the resonant cells 211 in each column of the resonant assembly 210 can be flexibly designed or adjusted according to actual use needs or design requirements, which is not limited herein.
Wherein each resonant unit 211 comprises a frequency tuning section (not labeled) and a coupling tuning section (not labeled) that are electrically connected.
It is understood that the specific structure and shape of each resonant unit 211 can be flexibly designed or adjusted according to the actual use requirement and design requirement, i.e., the specific structure and shape of the frequency tuning part and the coupling tuning part can be flexibly designed or adjusted according to the actual use requirement and design requirement.
As shown in fig. 6, optionally, the housing body 130 is further provided with at least two first adjusting holes 132 communicating with the mounting cavity 110, and the at least two first adjusting holes 132 are disposed in one-to-one correspondence with the at least two frequency tuning parts. As shown in fig. 3 and 4, the cavity filter further includes at least two frequency tuning members 300, where the at least two frequency tuning members 300 are disposed in one-to-one correspondence with and movably matched with the at least two first adjusting holes 132, so that the frequency can be adjusted by adjusting the space between the frequency tuning members 300 and the corresponding frequency tuning portions.
The frequency tuning member 300 may be an adjusting screw, the first adjusting hole 132 may be a threaded hole, and the adjusting screw is matched with the threaded hole by threads, so that the length of the adjusting screw extending into the mounting cavity 110 is adjusted, and the distance between the adjusting screw and the frequency tuning portion is adjusted, so that the frequency parameter can be adjusted.
Optionally, the housing body 130 is further provided with at least two second adjusting holes (not shown) that are in communication with the mounting cavity 110, and the at least two second adjusting holes are disposed in one-to-one correspondence with the at least two coupling tuning parts. And the cavity filter further comprises at least two coupling tuning pieces (not shown), wherein the at least two coupling tuning pieces are arranged in one-to-one correspondence with the at least two second adjusting holes and are movably matched with the at least two second adjusting holes, so that the coupling degree can be adjusted by adjusting the distance between the coupling tuning pieces and the corresponding coupling tuning parts.
The coupling tuning part can be an adjusting screw, the second adjusting hole can be a threaded hole, and the adjusting screw is matched with the threaded hole by threads, so that the length of the adjusting screw extending into the mounting cavity 110 is adjusted, the distance between the adjusting screw and the coupling tuning part is adjusted, and the coupling degree parameter can be adjusted.
In addition, in order to enhance the rejection capability of the cavity filter.
As shown in fig. 4 and 5, the cavity filter optionally further includes an inductive cross-coupling 230, where the inductive cross-coupling 230 is configured to electrically connect two non-adjacent resonant cells 211 in the same column of resonant assemblies 210. Thus, zero points can be formed at the high end of the passband, and the rejection capability of the cavity filter is further enhanced.
The inductive cross-coupling 230 may be in the form of a metal rod, and may be electrically connected to the non-adjacent two resonance units 211 by welding or the like. Of course, the inductive cross coupling 230 can also be directly integrally formed with the resonant structure 200, which can reduce the number of individual components, save cost, facilitate the ensuring of the consistency of indexes in the production process, and reduce the assembly difficulty.
As shown in fig. 4 and 5, the cavity filter optionally further comprises a capacitive cross-coupling 240; the capacitive cross coupling 240 is used to capacitively couple two resonant cells 211 that are not adjacent in the same column of resonant assemblies 210. In this manner, the use of the capacitive cross-coupling 240 can provide coupling between non-adjacent two unit resonant cavities, thereby introducing transmission zeroes and enhancing the cavity filter rejection capability. Of course, in other embodiments, the capacitive cross coupling 240 may be used to capacitively couple two resonant units 211 in two adjacent columns of resonant assemblies 210, and a transmission zero can be introduced, so as to enhance the rejection capability of the cavity filter.
Wherein inductive cross-coupling 230 may be in the form of a metal sheet or plate, etc. Also, the inductive cross-coupling 230 may be mounted on the inner sidewall of the mounting cavity 110 or on the resonant structure 200, as long as it is sufficient to introduce transmission zeroes to enhance the cavity filter rejection capability.
Specifically, the inductive cross-coupling member 230 is a coupling metal sheet, one end of which is disposed at a distance from one of the resonant cells 211 and is coupled to the other end of which is disposed at a distance from the other resonant cell 211 that is not adjacent to the other resonant cell. The coupling metal sheet and the resonance unit 211 may be connected and fixed by a dielectric member such as an insulating spacer or an insulating screw.
To ensure smooth input and output of signals.
As shown in fig. 3 and 4, the cavity filter may optionally further include an input connector 400 and an output connector 500.
Wherein the input connector 400 and the output connector 500 may be in the form of pins.
As shown in fig. 6, and, the case body 130 is further provided with a first mounting hole 133 and a second mounting hole 134 communicating with the mounting cavity 110.
Specifically, the input connector 400 is inserted into the first mounting hole 133 and is electrically connected to the resonance unit 211 at the head end of the signal transmission path; the output connector 500 is inserted into the second mounting hole 134 and electrically connected to the resonance unit 211 at the tail end of the signal transmission path. In this way, when the resonant units 211 are distributed along the signal transmission path, the input connector 400 is used to transmit signals to the resonant units 211 located at the head end of the transmission path, so that after signals are transmitted between the resonant units 211, signals are finally transmitted from the resonant units 211 located at the tail end of the transmission path to the output connector 500 and output, and smooth transmission of signals is enabled.
As shown in fig. 3 and 4, the cavity filter further includes a first insulating sleeve 600 and a second insulating sleeve 700.
Specifically, the first insulating sleeve 600 is installed in the first installation hole 133 and sleeved on the outer sidewall of the input joint 400. In this way, the input connector 400 can be isolated from the housing 100 by the first insulating sleeve 600, so that the normal transmission of signals is prevented from being affected by short circuit. The first insulating sleeve 600 may be made of an insulating material such as rubber or silica gel.
Specifically, the second insulating sleeve 700 is installed in the second installation hole 134 and sleeved on the outer sidewall of the output connector 500. In this way, the output connector 500 can be isolated from the housing 100 by the second insulating sleeve 700, so that the signal normal transmission is prevented from being affected by short circuit. The second insulating sleeve 700 may be made of an insulating material such as rubber or silica gel.
Optionally, a first adjusting hole 132 and a second adjusting hole are formed in the top wall of the shell body 130, a first mounting hole 133 and a second mounting hole 134 are formed in the bottom wall of the shell body 130, the partition 120 is connected with the top wall and the bottom wall of the shell body 130, a mounting portion is arranged in the middle of the partition 120, the resonant structure 200 is located in the middle of the mounting cavity 110, so that the frequency tuning piece 300 and the coupling tuning piece are located at the top, adjustment is facilitated, the input connector 400 and the output connector 500 are located at the bottom, and stability of signal transmission is guaranteed.
The "body" and "certain portion" may be a part of the corresponding "member", that is, the "body" and "certain portion" are integrally formed with the other portion of the "member"; or a separate component which is separable from the other part of the component, namely, a certain body and a certain part can be independently manufactured and then combined with the other part of the component into a whole. The expressions of "a body" and "a portion" are merely examples of embodiments, which are intended to facilitate reading, and are not intended to limit the scope of the application, so long as the features described above are included and the actions are the same, it is to be understood that the application is equivalent.
It should be noted that the components included in the units, the assemblies, the mechanisms and the devices of the application can be flexibly combined, that is, the modular production can be performed according to actual needs, so that the modular assembly is convenient. The above-mentioned components are only one embodiment of the present application, and for convenience of reading, not limitation of the scope of protection of the present application, so long as the above components are included and the same function should be understood as the equivalent technical solutions of the present application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. The term "and/or" as used in this application includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "mounted," "positioned," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" and the other element, the two elements may be fixed in a detachable connection manner, or may be fixed in a non-detachable connection manner, so that power transmission can be achieved, for example, sleeving, clamping, integrally forming and fixing, welding, etc., which may be achieved in the prior art, and no more details are needed. When an element is perpendicular or nearly perpendicular to another element, it is meant that the ideal conditions for both are perpendicular, but certain vertical errors may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
It will be further understood that when interpreting the connection or positional relationship of elements, although not explicitly described, the connection and positional relationship are to be interpreted as including the range of errors that should be within an acceptable range of deviations from the particular values as determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, and is not limited herein.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (11)
1. A cavity filter, comprising:
the shell comprises a shell body provided with an installation cavity and a partition piece which is arranged in the installation cavity and is integrally formed with the shell body, and the partition piece is provided with an installation part which extends along the assembly direction; a kind of electronic device with high-pressure air-conditioning system
The resonant structure is arranged in the mounting cavity and comprises at least two rows of resonant assemblies which are integrally formed, the resonant assemblies are distributed along a signal transmission path, the adjacent two rows of resonant assemblies are coupled and connected and fixed on the separating piece through the mounting part, each row of resonant assemblies comprises at least two resonant units which are arranged at intervals along the assembly direction and are arranged at intervals on the inner side wall of the mounting cavity, the adjacent two resonant units in the same row of resonant assemblies are coupled and connected, and each resonant unit comprises an electrically connected frequency tuning part and a coupling tuning part;
the shell body is further provided with at least two first adjusting holes communicated with the mounting cavity, the at least two first adjusting holes are arranged in one-to-one correspondence with the at least two frequency tuning parts, the cavity filter further comprises at least two frequency tuning parts, the at least two frequency tuning parts are arranged in one-to-one correspondence with the at least two first adjusting holes and are movably matched with the at least two first adjusting holes, and the at least two first adjusting holes are used for adjusting the distance between the frequency tuning parts and the corresponding frequency tuning parts so as to adjust the frequency; and/or, the shell body is further provided with at least two second adjusting holes communicated with the mounting cavity, the at least two second adjusting holes are arranged in one-to-one correspondence with the at least two coupling tuning parts, the cavity filter further comprises at least two coupling tuning parts, the at least two coupling tuning parts are arranged in one-to-one correspondence with the at least two second adjusting holes and are movably matched with the at least two coupling tuning parts, and the at least two coupling tuning parts are used for adjusting the distance between the coupling tuning parts and the corresponding coupling tuning parts so as to adjust the coupling degree.
2. The cavity filter of claim 1, wherein adjacent rows of said resonant elements are disposed at an included angle.
3. The cavity filter according to claim 2, wherein two adjacent columns of said resonant assemblies are disposed perpendicular to each other; or two adjacent columns of the resonant assemblies are arranged in parallel.
4. The cavity filter according to claim 1, wherein the mounting portion is provided with a first slot extending in the assembly direction, and two adjacent rows of the resonant assemblies are coupled and connected to each other and form a second slot for mating with the first slot.
5. The cavity filter according to claim 4, wherein the partition is further provided with a bearing portion for bearing engagement with the resonant structure.
6. The cavity filter according to any one of claims 1 to 5, wherein the housing further comprises an end cap, the housing body being provided with an end opening communicating with the mounting cavity, the end cap being connected with the housing body to close the end opening.
7. The cavity filter of claim 1, further comprising an inductive cross-coupling for electrically connecting non-adjacent two of the resonant cells in a same column of the resonant assembly.
8. The cavity filter of claim 1, further comprising capacitive cross-couplings; the capacitive cross coupling piece is used for capacitively coupling two non-adjacent resonant units in the same column of the resonant assembly, and/or the capacitive cross coupling piece is used for capacitively coupling two resonant units in two adjacent columns of the resonant assembly.
9. The cavity filter according to claim 1, further comprising an input connector and an output connector, wherein the housing body is further provided with a first mounting hole and a second mounting hole which are communicated with the mounting cavity, the input connector is inserted into the first mounting hole and is electrically connected with the resonance unit at the head end of the signal transmission path, and the output connector is inserted into the second mounting hole and is electrically connected with the resonance unit at the tail end of the signal transmission path.
10. The cavity filter of claim 9, further comprising a first insulating sleeve mounted in the first mounting hole and sleeved on an outer sidewall of the input joint, and a second insulating sleeve mounted in the second mounting hole and sleeved on an outer sidewall of the output joint.
11. A base station antenna comprising a cavity filter according to any of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286136.8A CN114614223B (en) | 2022-03-23 | 2022-03-23 | Base station antenna and cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210286136.8A CN114614223B (en) | 2022-03-23 | 2022-03-23 | Base station antenna and cavity filter |
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| Publication Number | Publication Date |
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| CN114614223A CN114614223A (en) | 2022-06-10 |
| CN114614223B true CN114614223B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210286136.8A Active CN114614223B (en) | 2022-03-23 | 2022-03-23 | Base station antenna and cavity filter |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
| CN103201897A (en) * | 2012-09-26 | 2013-07-10 | 华为技术有限公司 | Cavity filter |
| CN204167448U (en) * | 2014-08-29 | 2015-02-18 | 四川九洲电器集团有限责任公司 | A kind of double-frequency coaxial chamber band pass filter |
| CN208315715U (en) * | 2018-05-23 | 2019-01-01 | 东莞市易讯时代通信有限公司 | A kind of CDMA filter for base station |
| CN109818121A (en) * | 2018-12-14 | 2019-05-28 | 京信通信系统（中国）有限公司 | Cavity body filter part and its cavity cover plate assembly |
| CN209056583U (en) * | 2018-12-19 | 2019-07-02 | 中国电子科技集团公司第五十四研究所 | A kind of X-band high power circular cavity filter |
| CN111446524A (en) * | 2019-01-17 | 2020-07-24 | 罗森伯格技术（昆山）有限公司 | Single-layer cross coupling filter |
| CN211829146U (en) * | 2020-03-24 | 2020-10-30 | 深圳市大富科技股份有限公司 | Resonant cavity arrangement structure, cavity filter and communication base station |
| CN112952325A (en) * | 2021-01-29 | 2021-06-11 | 盐城东山通信技术有限公司 | Inductive coupling assembly, cavity filter and communication radio frequency equipment |
| CN113113743A (en) * | 2021-04-14 | 2021-07-13 | 昆山立讯射频科技有限公司 | Single-cavity resonator and radio frequency cavity filter |
| CN113437457A (en) * | 2021-06-21 | 2021-09-24 | 广东通宇通讯股份有限公司 | Miniaturized filter |
| CN215644932U (en) * | 2021-08-05 | 2022-01-25 | 武汉凡谷电子技术股份有限公司 | Filter debugging structure |
| CN215732130U (en) * | 2021-07-09 | 2022-02-01 | 昆山立讯射频科技有限公司 | Cavity filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7782158B2 (en) * | 2007-04-16 | 2010-08-24 | Andrew Llc | Passband resonator filter with predistorted quality factor Q |
-
2022
- 2022-03-23 CN CN202210286136.8A patent/CN114614223B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
| CN103201897A (en) * | 2012-09-26 | 2013-07-10 | 华为技术有限公司 | Cavity filter |
| CN204167448U (en) * | 2014-08-29 | 2015-02-18 | 四川九洲电器集团有限责任公司 | A kind of double-frequency coaxial chamber band pass filter |
| CN208315715U (en) * | 2018-05-23 | 2019-01-01 | 东莞市易讯时代通信有限公司 | A kind of CDMA filter for base station |
| CN109818121A (en) * | 2018-12-14 | 2019-05-28 | 京信通信系统（中国）有限公司 | Cavity body filter part and its cavity cover plate assembly |
| CN209056583U (en) * | 2018-12-19 | 2019-07-02 | 中国电子科技集团公司第五十四研究所 | A kind of X-band high power circular cavity filter |
| CN111446524A (en) * | 2019-01-17 | 2020-07-24 | 罗森伯格技术（昆山）有限公司 | Single-layer cross coupling filter |
| CN211829146U (en) * | 2020-03-24 | 2020-10-30 | 深圳市大富科技股份有限公司 | Resonant cavity arrangement structure, cavity filter and communication base station |
| CN112952325A (en) * | 2021-01-29 | 2021-06-11 | 盐城东山通信技术有限公司 | Inductive coupling assembly, cavity filter and communication radio frequency equipment |
| CN113113743A (en) * | 2021-04-14 | 2021-07-13 | 昆山立讯射频科技有限公司 | Single-cavity resonator and radio frequency cavity filter |
| CN113437457A (en) * | 2021-06-21 | 2021-09-24 | 广东通宇通讯股份有限公司 | Miniaturized filter |
| CN215732130U (en) * | 2021-07-09 | 2022-02-01 | 昆山立讯射频科技有限公司 | Cavity filter |
| CN215644932U (en) * | 2021-08-05 | 2022-01-25 | 武汉凡谷电子技术股份有限公司 | Filter debugging structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114614223A (en) | 2022-06-10 |
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