CN113131114A - Cavity filter, cover plate assembly thereof and communication equipment - Google Patents
Cavity filter, cover plate assembly thereof and communication equipment Download PDFInfo
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- CN113131114A CN113131114A CN201911416477.7A CN201911416477A CN113131114A CN 113131114 A CN113131114 A CN 113131114A CN 201911416477 A CN201911416477 A CN 201911416477A CN 113131114 A CN113131114 A CN 113131114A
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- 238000004891 communication Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 230000001939 inductive effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 21
- 230000002829 reductive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 230000036961 partial effect Effects 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
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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
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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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
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Abstract
The invention provides a cavity filter, a cover plate component thereof and communication equipment comprising the cavity filter, wherein the cavity filter comprises a cavity, the cover plate component and an input/output part, the cover plate component comprises a cover plate body and a resonance tube integrally connected with the cover plate body, and the cover plate component covers the cavity in a welding mode or a screw fixing mode to form a resonance cavity; the input/output component extends into the resonant cavity through the cavity and/or the cover plate body and is connected with the resonant tube in a capacitive coupling mode or an inductive coupling mode. According to the cavity filter, the cover plate assembly and the communication equipment comprising the cavity filter, provided by the invention, the resonance tubes and the cover plate are connected into the cover plate assembly, so that structural members in the resonance cavity can be reduced, and radio frequency adjustment is optimized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a cavity filter, a cover plate assembly of the cavity filter and communication equipment comprising the cavity filter.
Background
In a base station system for mobile communication, communication signals carrying communication data in a specific frequency range are generally transmitted through a transmitting antenna, and the communication signals are received through a receiving antenna. The signal received by the receiving antenna contains not only the communication signal carrying the communication data within the specific frequency range, but also a number of spurious or interfering signals outside the specific frequency range. To obtain a communication signal carrying communication data in a specific frequency range transmitted by a transmitting antenna from a signal received by a receiving antenna, the signal received by the receiving antenna is usually filtered by a cavity filter, so as to filter out noise or interference signals outside the specific frequency of the communication signal carrying communication data.
The cavity filter is widely used as a frequency selection device. As shown in fig. 1, in the prior art, a cavity filter generally includes a cavity 11, a cover plate 12, a resonator tube 13, and a tuning screw 14, wherein the cover plate 12 covers the cavity 11 to form a resonant cavity, the resonator tube 13 is fixed at the bottom of the cavity 11 by screws, and the tuning screw 14 extends into the resonator tube 13 through the cover plate 12 for radio frequency parameter adjustment. The structure in the resonant cavity is more and easy to influence the radio frequency parameters, the resonant cavity comprises a screw for fixing the resonant tube 13 besides the resonant tube 13, an assembly table with a threaded hole is correspondingly designed for the cavity 11, and a tuning screw 14 is required to be adopted for radio frequency adjustment.
Disclosure of Invention
The invention provides a cavity filter, a cover plate assembly of the cavity filter and communication equipment comprising the cavity filter, and aims to solve the technical problem that in the prior art, more structural members in a resonant cavity easily influence radio frequency parameters.
In order to solve the technical problems, the invention adopts a technical scheme that: the cover plate assembly of the cavity filter comprises a cover plate body and a resonance tube, wherein the resonance tube is integrally connected with the cover plate body.
According to an embodiment of the present invention, the cover plate body is provided with a deformation region, and the deformation region is configured to receive an adjusting force to adjust a position state of the resonator tube relative to the cover plate body.
According to an embodiment of the present invention, the deformation region is a region of the cover plate body surrounding the periphery of the resonator tubes.
According to an embodiment of the present invention, a material thickness of the deformation region is smaller than a material thickness of the cover plate body.
According to an embodiment of the present invention, the deformation region is in a shape of a single-turn groove or in a shape of a multi-turn groove.
According to an embodiment of the present invention, the resonator tube includes a ring wall and a bottom wall, a top end of the ring wall is connected to the cover plate body, and a bottom end of the ring wall is connected to the bottom wall.
According to an embodiment of the invention, the material thickness of the deformation zone is 0.3-0.5 mm.
According to an embodiment of the invention, a fly rod is further connected to the annular wall.
In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a cavity filter comprising:
a cavity;
the cover plate assembly covers the cavity in a welding mode or a screw fixing mode to form a resonant cavity;
and the input/output part extends into the resonant cavity through the cavity and/or the cover plate body and is in capacitive coupling connection or inductive coupling connection with the resonant tube.
In order to solve the technical problem, the invention adopts another technical scheme that: a communication device is provided, which includes the cavity filter, and the communication device is at least one of a duplexer, a simplex, a splitter, a combiner, or a tower top amplifier.
The invention has the beneficial effects that: different from the situation of the prior art, the cavity filter, the cover plate assembly thereof and the communication equipment comprising the cavity filter provided by the invention have the advantages that the resonant tubes and the cover plate are connected into the cover plate assembly, so that structural members in the resonant cavity can be reduced, and the radio frequency adjustment is optimized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic cross-sectional structure diagram of a cavity filter commonly used in the prior art;
fig. 2 is a schematic partial cross-sectional structure diagram of a cavity filter according to a first embodiment of the present invention;
fig. 3 is a schematic partial cross-sectional structure diagram of a cavity filter according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of a partial cross-sectional structure of a cavity filter according to a second embodiment of the present invention;
fig. 5 is a schematic partial cross-sectional structure diagram of a cavity filter according to a third embodiment of the present invention;
fig. 6 is a schematic partial cross-sectional structure diagram of a cavity filter according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of components of a cavity filter according to a fourth embodiment of the present invention;
fig. 8 is a schematic diagram of a partial cross-sectional structure of a cavity filter according to a fifth embodiment of the present invention;
fig. 9 is a schematic cross-sectional structure diagram of a cavity filter according to a sixth embodiment of the present invention;
fig. 10 is a schematic perspective view of a cavity filter according to a seventh embodiment of the present invention;
fig. 11 is a schematic structural diagram of debugging the cavity filter provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 2 and fig. 3 together, an embodiment of the invention provides a cover plate assembly 110, in which the cover plate assembly 110 includes a cover plate body 111 and a resonator tube 112, and the resonator tube 112 is integrally connected to the cover plate body 111.
The cover plate body 111 is provided with a deformation area 113, and the deformation area 113 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 112 relative to the cover plate body 111 so as to adjust the radio frequency parameters. The deformation region 113 is a region on the cover plate body 111 surrounding the periphery of the resonator tube 112. The material thickness of the deformation zone 113 is smaller than the material thickness of the cover body 111. The deformation zone 113 is in the form of a single-turn groove (see fig. 2) or in the form of a multi-turn groove (see fig. 3). In particular embodiments, the thickness of the deformation region 113 may be 0.3-0.5 millimeters.
The resonator tube 112 includes a ring wall 114 and a bottom wall 115, wherein the top end of the ring wall 114 is connected to the cover plate body 111, and the bottom end of the ring wall 114 is connected to the bottom wall 115. The annular wall 114 may further be coupled with a fly rod.
Referring to fig. 2 and fig. 3, the present invention further provides a cavity filter, which includes a cavity 120, the cover plate assembly 110, and an input/output device (not shown).
The cover plate assembly 110 covers the cavity 120 by welding or screwing to form the resonant cavity 125.
Referring to fig. 4, an embodiment of the invention further provides a cover plate assembly 210, where the cover plate assembly 210 includes a cover plate body 211 and a resonator tube 212, and the resonator tube 212 is riveted to the cover plate body 211. The cover plate body 211 is provided with a connection hole 222, and the resonator tube 212 extends out of the connection hole 222 from the lower surface of the cover plate body 211 and is riveted to the upper surface of the cover plate body 211.
The cover plate body 211 is provided with a deformation area 213, and the deformation area 213 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 212 relative to the cover plate body 211 so as to adjust the radio frequency parameters. The deformation region 213 is a region of the cover plate body 211 surrounding the periphery of the resonator tube 212. The material thickness of the deformation zone 213 is smaller than the material thickness of the cover body 211. The deformation zone 213 is in the form of a single-turn groove or in the form of a multi-turn groove.
The resonator tube 212 comprises an annular wall 214 and a bottom wall 215, the bottom end of the annular wall 214 is connected with the bottom wall 215, the top end of the annular wall 214 is provided with a limiting platform 217, a penetrating part 218 and a riveting edge 219 which are sequentially connected, the limiting platform 217 is in limiting abutting fit with the lower surface of the cover plate body 211, the penetrating part 218 penetrates through the connecting hole 222, and the riveting edge 219 and the limiting platform 217 are oppositely arranged and are riveted on the upper surface of the cover plate body 211. The bottom wall 215 further extends with a flange portion 216. The annular wall 214 may further be coupled with a fly rod.
Referring to fig. 4, the embodiment of the invention further provides a cavity filter, which includes a cavity 220, the aforementioned cover plate assembly 210, and an input/output device (not shown).
The cover plate assembly 210 covers the cavity 220 by welding or screwing to form a resonant cavity 225.
Referring to fig. 5, an embodiment of the invention further provides a cover plate assembly 310, where the cover plate assembly 310 includes a cover plate body 311 and a resonator tube 312, and the resonator tube 312 is connected to the cover plate body 311. The cover plate body 311 is provided with a connecting hole 319, the resonance tube 312 extends into the connecting hole 319 from the lower surface of the cover plate body 311 and is in threaded connection, compression connection or welding with the connecting hole 319, the three connection schemes can be used independently, or a welding process is added on the basis of the threaded connection or compression connection scheme to improve the connection manufacturability.
The cover body 311 is provided with a deformation region 313, and the deformation region 313 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 312 relative to the cover body 311 so as to adjust the radio frequency parameters. The deformation region 313 is a region on the cover plate body 311 surrounding the periphery of the resonator tube 312. The material thickness of the deformation zone 313 is less than the material thickness of the cover body 311. The deformation region 313 may be in the form of a single-turn groove or in the form of multiple-turn grooves.
The resonance tube 312 comprises an annular wall 314 and a bottom wall 315, the bottom end of the annular wall 314 is connected with the bottom wall 315, when a compression joint connection scheme is adopted, a fitting groove 317 and a lead-in table 318 sequentially extend from the top end of the annular wall 314, the outer diameter of the annular wall 314 is larger than that of the connection hole 319, the outer diameter of the fitting groove 317 is smaller than that of the connection hole 319, the diameter of the lead-in table 318 is between the outer diameter of the annular wall 314 and that of the fitting groove 317, the lead-in table 318 can be in interference fit with the connection hole 319, a knurled surface or a gear surface can be arranged on the outer periphery of the lead-in table 318 to increase the connection stability, the resonance tube 312 is tightly fitted with the cover plate body 311 through extrusion, and when the resonance tube 312 is extruded with the cover plate body 311. The bottom wall 315 further extends with a flange portion 316. The annular wall 314 may further be coupled with a fly rod.
Referring to fig. 5, the present invention further provides a cavity filter, which includes a cavity 320, the cover plate assembly 310, and an input/output device (not shown).
The cover plate assembly 310 covers the cavity 320 by welding or screwing to form the resonant cavity 325.
Referring to fig. 6 and fig. 7, in the cover plate assembly 410 of the present embodiment, the cover plate assembly 410 includes a cover plate body 411 and a resonator tube 412, a connecting tube 417 is disposed on a lower surface of the cover plate body 411, and the resonator tube 412 is connected to the connecting tube 417, which may specifically adopt a connection manner such as riveting, clamping, welding, and screwing.
The upper surface of the cover plate body 411 is provided with a recessed assembly cavity 418, the cover plate assembly 410 further comprises an elastic sheet 431 and an adjusting screw 432 in threaded connection with the elastic sheet 431, the assembly cavity 418 can be a closed assembly cavity, the assembly cavity 418 can be provided with an avoiding notch so that the elastic sheet 431 can be assembled into the assembly cavity 418 in a contraposition mode, the elastic sheet 431 can be assembled into the assembly cavity 418 in an anti-falling limiting mode by rotating a certain angle after being assembled into the assembly cavity 418, and the adjusting screw 432 is used for abutting against an area, provided with a connecting cylinder 417, of the cover plate body 411 to adjust the position state of the whole resonance tube 412 relative to the cover plate body 411 so as to adjust radio frequency parameters. It can be understood that, since the resonator tube 412 moves up and down integrally during the adjustment process, the resonator tube 412 itself is not deformed, and the effect of keeping the filter parameters consistent can be achieved.
Of course, the present embodiment may also adopt the adjustment method in the foregoing embodiment, that is, the cover plate body 411 is provided with a deformation region for receiving the push-pull action of the adjustment force to adjust the position state of the resonator tube 412 relative to the cover plate body 411, so as to adjust the rf parameter. The deformation region is a region on the cover plate body 411 surrounding the periphery of the resonator tube 412. The material thickness of the deformation zone is less than the material thickness of the cover body 411. The deformation area is in a single-circle groove shape or a multi-circle groove shape.
The resonator tube 412 comprises a ring wall 414 and a bottom wall 415, wherein the top end of the ring wall 414 is connected to the connecting cylinder 417 and the bottom end of the ring wall 414 is connected to the bottom wall 415. The bottom wall 415 further extends with a flange portion 416. The annular wall 414 may further be coupled with a fly rod.
As shown in fig. 7, the elastic sheet 431 includes a tray body 433, a thread bush 434 provided in a central region of the tray body 433, a plurality of bent bosses 435 provided in an edge region of the tray body 433, and a plurality of through holes 436 provided between the thread bush 434 and the bent bosses 435. The threaded sleeve 434 is used for being screwed with the adjusting screw 432, the bending bulge 435 enables the elastic sheet 431 to have certain elasticity as a whole, and the through hole 436 can appropriately reduce materials.
Referring to fig. 6 and 7, the present invention further provides a cavity filter, which includes a cavity 420, the cover plate assembly 410, and an input/output device (not shown).
The cover plate assembly 410 covers the cavity 420 by welding or screwing to form the resonant cavity 425.
Referring to fig. 8, an embodiment of the invention further provides a cover plate assembly 510, where the cover plate assembly 510 includes a cover plate body 511 and a resonator tube 512, and the resonator tube 512 is connected to the cover plate body 511.
The cover body 511 is provided with a deformation region 513, and the deformation region 513 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 512 relative to the cover body 511 so as to adjust the radio frequency parameters. The deformation region 513 is a region of the cover plate body 511 that surrounds the periphery of the resonator tube 512. The material thickness of the deformation zone 513 is smaller than the material thickness of the cover body 511. The deformation zone 513 may be a single turn groove or a multi-turn groove.
The resonator tube 512 includes a ring wall 514 and a bottom wall 515, wherein the top end of the ring wall 514 is connected to the cover plate body 511, and the bottom end of the ring wall 514 is connected to the bottom wall 515. The bottom wall 515 further extends with a flange portion 516. Flying rod 517 is further connected to annular wall 514.
Referring to fig. 8, the embodiment of the invention further provides a cavity filter, which includes a cavity 520, the aforementioned cover plate assembly 510, and an input/output device (not shown).
A partition plate 521 is arranged in the cavity 520, and the partition plate 521 is provided with a slot 522 avoiding the flying rod 517; the cover plate assembly 510 covers the cavity 520 by welding or screwing to form the resonant cavity 525.
In other embodiments, the flying rod 517 may also be suspended within the slot 522 by an insulating member and capacitively coupled to the resonator tube 512.
Referring to fig. 9, an embodiment of the present invention further provides a cover assembly 710, where the cover assembly 710 includes a cover body 711 and a resonator tube 712, and the resonator tube 712 is connected to the cover body 711.
The cover plate body 711 is provided with a deformation region 713, and the deformation region 713 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 712 relative to the cover plate body 711 so as to adjust the radio frequency parameters. The deformation region 713 is a region of the cover body 711 that surrounds the periphery of the resonator tube 712. The material thickness of the deformation zone 713 is smaller than the material thickness of the cover body 711. The deformation region 713 may be in the form of a single-turn groove or in the form of a multi-turn groove.
Referring to fig. 9, the cavity filter according to the present invention further includes a cavity 720, the cover plate 710, a first input/output device 714, and a second input/output device 718.
The cover plate assembly 710 covers the cavity 720 by welding or screwing to form a resonant cavity 725; the first input/output element 714 extends into the resonant cavity 725 through the cavity 720 and/or the cover plate body 710 and is capacitively coupled with the resonant tube 712 through a coupling rod 717, wherein the first input/output element 714 is fixedly assembled through a first insulating member 715 and a second insulating member 716, and the coupling rod 717 can be sleeved on the first input/output element 714 and clamped and fixed through the first insulating member 715 and the second insulating member 716. The second input/output 718 may be a low-pass rod, which is fixed by a mounting cylinder 721 connected to the cover plate body 711 and capacitively coupled to the resonator tubes 712 by coupling rods 719.
In other embodiments, the first and second input/ output devices 714 and 718 may also be in contact with the resonator tube 712 to form an inductively coupled connection.
Referring to fig. 10, an embodiment of the invention further provides a cavity filter, which includes a cover plate assembly 910 and a cavity 920.
The cover plate assembly 910 includes a cover plate body 911 and a plurality of resonator tubes 912, wherein the plurality of resonator tubes 912 and the cover plate body 911 are connected in various manners as shown in the previous embodiment. The cover plate body 911 is provided with a deformation area 913, and the deformation area 913 is used for receiving the push-pull action of the adjusting force to adjust the position state of the resonance tube 912 relative to the cover plate body 911 so as to adjust the radio frequency parameters. The deformation region 913 is a region of the cover plate body 911 surrounding the periphery of the resonator tube 912. The material thickness of the deformation zone 913 is smaller than the material thickness of the cover body 911. The deformation region 913 may be a single turn groove or a multi-turn groove. The cover plate 910 covers the cavity 920 by welding or screwing to form a resonant cavity.
The embodiment of the invention also provides communication equipment, which comprises the cavity filter, wherein the communication equipment is at least one of a duplexer, a simplex, a splitter, a combiner or a tower amplifier.
Referring to fig. 10 and fig. 11, the embodiment of the present invention further provides a tuning device, the tuning device is configured to apply an adjusting force to the cover plate assembly, the tuning device includes a support and an adjusting member 960 slidably disposed on the support, and the adjusting member 960 is configured to apply a downward force or an upward force to the cover plate body or the resonator tubes to adjust a position state of the resonator tubes relative to the cover plate body.
In one embodiment, the adjusting member 930 is a telescopic cylinder, the telescopic cylinder includes a cylinder body 961 and a cylinder rod 962 telescopically connected to the cylinder body 961, the cylinder body 961 is slidably disposed through a bracket, and the cylinder rod 962 is used for applying an adjusting force to adjust a position state of the resonator tube relative to the cover plate body.
As described above, the cover body is provided with a deformation region (e.g., the deformation region 913 in fig. 10), which is a region of the cover body (e.g., the cover body 911 in fig. 10) surrounding the periphery of the resonator tube (e.g., the resonator tube 912 in fig. 10), and accordingly, the free end of the cylinder rod 962 may have a convex ring shape. The deformation zone may be in the form of a single-turn groove or in the form of multiple-turn grooves, and correspondingly, the free end of the rod 962 may be in the form of a single-turn torus or in the form of multiple-turn tori.
In one embodiment, to facilitate pull-up adjustment, the deformation zone may be provided with a pull member and the free end of cylinder rod 962 is correspondingly provided with a pull member that cooperates with the pull member to apply the pull-up adjustment force. The pulling piece and the lifting piece can be parts such as a hanging ring, a hook and the like.
The resonator tube includes a ring wall and a bottom wall, wherein the top end of the ring wall is connected to the cover body, and the bottom end of the ring wall is connected to the bottom wall.
Similarly, to facilitate pull-up adjustment, a pull member may be provided on the bottom wall, and a corresponding pull member may be provided at the free end of cylinder rod 962, the pull member cooperating with the pull member to apply the pull-up adjustment force. The pulling piece and the lifting piece can be parts such as a hanging ring, a hook and the like.
In one embodiment, the bracket includes a substrate 930 and a slide rail disposed on the substrate 930, a deformation region for placing the cavity filter is formed between the slide rail and the substrate 930, and the adjusting element 960 is disposed on the slide rail.
Specifically, the slide rail includes a first slide rail 940 disposed on the substrate 930, and a second slide rail 950 slidably disposed on the first slide rail 940 in a first direction, and the adjusting element 960 is slidably disposed on the second slide rail 950 in a second direction. The first direction and the second direction are perpendicular to each other.
Wherein, first slide rail 940 includes that parallel interval sets up two on base plate 930, the top of first slide rail 940 is equipped with first spout 941 along first direction, second slide rail 950 can be the frame body form, the bottom of second slide rail 950 is equipped with the slider 951 that matches with first spout 941 along first direction, first spout 941 and slider 951 can be the cooperation structure of forked tail slot type or T type slot type, the relative internal surface of second slide rail 950 is equipped with second spout 952 along the second direction, regulating part 960 is based on second spout 952 sliding assembly.
The adjusting member 960 may be used to apply a downward force or a pulling force by hooking or vacuum suction to any of the deformation regions 913 to adjust the rf parameters of the cavity filter. The debugging device provided by the invention is separated from the cavity filter after being adjusted, so that the problem that the tuning screw is still assembled on the cover plate after being adjusted in the prior art and is easy to loosen or misoperation influences the adjusted radio frequency parameters can be avoided.
It is understood that in the above embodiments, when the resonator tube and the cover plate are integrally formed, welded, riveted or pressed, the cylinder rod 962 may act on the bottom or deformation area of the resonator tube, and when the resonator tube 412 and the cover plate body 411 are connected by the connecting cylinder 417, the cylinder rod 962 may act on the adjusting screw 432, and when the resonator tube 412 moves up and down integrally, the resonator tube 412 itself is not deformed, so as to achieve the effect of maintaining the uniformity of the filter parameters.
In summary, it is easily understood by those skilled in the art that the cavity filter, the cover plate assembly thereof and the communication device including the cavity filter provided by the present invention can reduce structural members in the resonant cavity and optimize the radio frequency adjustment by connecting the resonant tube and the cover plate to form the cover plate assembly.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The cover plate assembly of the cavity filter is characterized by comprising a cover plate body and a resonance tube, wherein the resonance tube is integrally connected with the cover plate body.
2. The cover plate assembly as claimed in claim 1, wherein the cover plate body is provided with a deformation region for receiving an adjusting force to adjust a position state of the resonator tubes with respect to the cover plate body.
3. The cover plate assembly of claim 2, wherein the deformation zone is an area of the cover plate body surrounding a periphery of the resonator tubes.
4. The cover plate assembly of claim 2, wherein the deformation zone has a material thickness that is less than a material thickness of the cover plate body.
5. The decking assembly defined in claim 2 wherein the deformation zone is in the form of a single turn groove or in the form of a multi-turn groove.
6. The cover plate assembly of claim 1, wherein the resonator tubes comprise an annular wall and a bottom wall, a top end of the annular wall being connected to the cover plate body and a bottom end of the annular wall being connected to the bottom wall.
7. The decking assembly defined in claim 1 wherein the deformation zone is of a material thickness in the range of 0.3 to 0.5 mm.
8. The decking assembly defined in claim 7 wherein fly rods are further connected to the annular wall.
9. A cavity filter, comprising:
a cavity;
the cover plate assembly of any one of claims 1 to 8, which covers the cavity by welding or screwing to form a resonant cavity;
and the input/output part extends into the resonant cavity through the cavity and/or the cover plate body and is in capacitive coupling connection or inductive coupling connection with the resonant tube.
10. A communication device comprising the cavity filter of claim 9, the communication device being at least one of a duplexer, a simplex, a splitter, a combiner, or a tower top amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416477.7A CN113131114A (en) | 2019-12-31 | 2019-12-31 | Cavity filter, cover plate assembly thereof and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911416477.7A CN113131114A (en) | 2019-12-31 | 2019-12-31 | Cavity filter, cover plate assembly thereof and communication equipment |
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| CN113131114A true CN113131114A (en) | 2021-07-16 |
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| CN201911416477.7A Pending CN113131114A (en) | 2019-12-31 | 2019-12-31 | Cavity filter, cover plate assembly thereof and communication equipment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1746681A1 (en) * | 2005-07-20 | 2007-01-24 | Matsushita Electric Industrial Co., Ltd. | Plastic combline filter with metal post to increase heat dissipation |
| CN101916895A (en) * | 2010-08-20 | 2010-12-15 | 深圳市大富科技股份有限公司 | Cavity filter and manufacturing method thereof |
| CN203134943U (en) * | 2012-11-16 | 2013-08-14 | 深圳市大富科技股份有限公司 | Cavity filter |
| KR20130098205A (en) * | 2012-02-27 | 2013-09-04 | 주식회사 케이엠더블유 | Radio frequency filter with cavity structure |
| US20190334222A1 (en) * | 2017-01-13 | 2019-10-31 | Huawei Technologies Co., Ltd. | Cavity resonator, filter, and communications device |
| CN211719751U (en) * | 2019-12-31 | 2020-10-20 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate assembly thereof and communication equipment |
-
2019
- 2019-12-31 CN CN201911416477.7A patent/CN113131114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1746681A1 (en) * | 2005-07-20 | 2007-01-24 | Matsushita Electric Industrial Co., Ltd. | Plastic combline filter with metal post to increase heat dissipation |
| CN101916895A (en) * | 2010-08-20 | 2010-12-15 | 深圳市大富科技股份有限公司 | Cavity filter and manufacturing method thereof |
| KR20130098205A (en) * | 2012-02-27 | 2013-09-04 | 주식회사 케이엠더블유 | Radio frequency filter with cavity structure |
| CN203134943U (en) * | 2012-11-16 | 2013-08-14 | 深圳市大富科技股份有限公司 | Cavity filter |
| US20190334222A1 (en) * | 2017-01-13 | 2019-10-31 | Huawei Technologies Co., Ltd. | Cavity resonator, filter, and communications device |
| CN211719751U (en) * | 2019-12-31 | 2020-10-20 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate assembly thereof and communication equipment |
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