CN103650237A - Filter tuning device and filter - Google Patents
Filter tuning device and filter Download PDFInfo
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- CN103650237A CN103650237A CN201380000951.2A CN201380000951A CN103650237A CN 103650237 A CN103650237 A CN 103650237A CN 201380000951 A CN201380000951 A CN 201380000951A CN 103650237 A CN103650237 A CN 103650237A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/04—Coaxial resonators
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Abstract
The embodiment of the invention discloses a filter tuning device and a filter and belongs to the technical field of communication devices. The filter tuning device and the filter are invented in order to well effectively prevent Q value of the filter from lowering. The filter tuning device and the filter comprise a resonant cavity, a cover body and a resonant rod. The bottom of the resonant cavity is provided with a through hole. The resonant rod penetrates through the through hole from the interior of the resonant cavity. The cover body is covered on the resonant cavity. The resonant rod is movable along a direction vertical to the bottom of the resonant cavity via through hole. The filter tuning device and the filter are mostly suitable for adjusting resonant frequency of the filter.
Description
Technical field
The present invention relates to communication equipment technical field, relate in particular to a kind of tuner and filter of filter.
Background technology
Tunable filter is a kind ofly can obtain by controlling the variation of parameter the filter of centre frequency desired value.Wherein, electric capacity is an important parameter determining filter center frequency, capacitance size can regulate by the tuning structure in filter, example screw tuning structure as shown in Figure 1, comprise resonant cavity 2 ＇, resonant rod 3 ＇, tuning screw 8 ＇, lid 1 ＇, resonant rod 3 ＇ are fixed on the inside of resonant cavity 2 ＇, and tuning screw 8 ＇ are screwed onto by nut 9 ＇ the inside that lid 1 ＇ went up and extend into resonant rod 3 ＇; On resonant rod 3 ＇, be also provided with and dodge groove 32 ＇ for what make that tuning screw 8 ＇ move up and down.By tuning screw 8 ＇ being stretched into the length adjustment of resonant rod 3 ＇ inside, regulate the capacitance size between resonant rod 3 ＇ and lid 1 ＇, thereby reach the object of filter debugging.
In order to guarantee that tuning screw extend in resonant rod, can carry out safe debugging, between the external diameter of tuning screw and the internal diameter of resonant rod, need assembling, the debugging that has certain safe distance to come to guarantee filter and the reliability of producing, but can increase like this diameter of resonant rod, and, when resonant rod is while being fixed by screws in resonant cavity, in resonant rod, need reserved a part of space that hold-down screw is installed, so also can increase resonant rod diameter, resonant rod diameter can reduce the Q value of filter cavity after increasing, increase the loss of filter.
Utility model content
Embodiments of the invention provide a kind of tuner and filter of filter, are conducive to improve the Q value of filter cavity, and the loss that reduces filter.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, the embodiment of the present invention provides a kind of filter tuner device, comprise resonant cavity, lid, resonant rod, through hole, described resonant cavity bottom is provided with through hole, described resonant rod passes described through hole in resonant cavity, described lid is housed on described resonant cavity, and described resonant rod is removable along the direction of the bottom vertical with described resonant cavity by described through hole from the bottom of described resonant cavity.
In conjunction with first aspect mode in the cards, in the first possibility implementation, the bottom of described resonant cavity is provided with the female through hole of tool, described resonant rod is provided with the first external screw thread matching with described internal thread, described resonant rod is screwed in described through hole, by rotating described resonant rod, comes along the direction of the bottom vertical with described resonant cavity removable.
The first mode in the cards in conjunction with first aspect, in the second possibility implementation, bottom surface in described resonant cavity is provided with towards the boss of described lid direction, described boss is vertical with the bottom surface in resonant cavity, highly be less than the length of described resonant rod, and described boss is provided with described through hole.
In conjunction with first or the second mode in the cards of first aspect, in the third possibility implementation, also comprise tight lock part, described tight lock part is for being locked at described resonant cavity by described resonant rod.
The third mode in the cards in conjunction with first aspect, in the 4th kind of possibility implementation, described tight lock part comprises and is located on described resonant rod and at least one section second external screw thread and at least one section three external screw thread relative with described internal thread, and every section of described second external screw thread in described tight lock part is adjacent with every section of described the 3rd external screw thread; Described the second externally threaded tooth is apart from being greater than the first externally threaded tooth distance, and described the 3rd externally threaded tooth is apart from being less than the first externally threaded tooth distance.
The third mode in the cards in conjunction with first aspect, in the 5th kind of possibility implementation, described tight lock part comprises and being located on described resonant rod and two the above open slots relative with described internal thread, the opening degree of depth of described open slot be greater than described first externally threaded be the degree of depth.
In conjunction with the 5th kind of mode in the cards of first aspect, in the 6th kind of possibility implementation, the width between adjacent two described open slots is at least greater than described the first externally threaded tooth distance.
In conjunction with the 6th kind of mode in the cards of first aspect, in the 7th kind of possibility implementation, the opening direction of two adjacent described open slots is contrary.
In conjunction with the 7th kind of mode in the cards of first aspect, in the 8th kind of possibility implementation, the degree of depth of described open slot is greater than the radius of described resonant rod, and is less than the diameter of described resonant rod.
In conjunction with the 8th kind of mode in the cards of first aspect, in the 9th kind of possibility implementation, described two above open slots are close to the bottom of described resonant rod.
In conjunction with the third mode in the cards of first aspect, in the tenth kind of possibility implementation, described tight lock part comprises the nut matching with this first external screw thread, for the first male thread portion locking that described resonant rod is stretched out from described resonant cavity bottom.
The tenth kind of mode in the cards in conjunction with first aspect, in the 11 kind of possibility implementation, bottom outside described resonant cavity and the position relative with described boss are provided with groove, the height of described groove is greater than the height of described nut, and the height of described groove is less than the thickness of the bottom of resonant cavity, the first male thread portion and described nut that described resonant rod stretches out are positioned at described groove.
In conjunction with the 11 kind of mode in the cards of first aspect, in the 12 kind of possibility implementation, described resonant cavity, described lid and described resonant rod are the metalwork carrying out after surface treatment.
In conjunction with the 12 kind of mode in the cards of first aspect, in the 13 kind of possibility implementation, the material of described resonant cavity, described lid is respectively aluminium alloy, magnesium alloy, and the material of described resonant rod is iron or copper.
Second aspect, the invention process provides a kind of filter, comprises main body, comprises the filter tuner device in a plurality of above-mentioned any possibility implementations in described main body.
A kind of filter tuner device and filter that the embodiment of the present invention provides, comprise resonant cavity, lid, resonant rod, through hole, described lid covers on described resonant cavity, the bottom of described resonant cavity is provided with through hole, described resonant rod passes through hole in resonant cavity, described lid is housed on resonant cavity, described resonant rod is removable along the direction of the bottom vertical with described resonant cavity by described through hole from the bottom of described resonant cavity, by the length that regulates resonant rod to stretch into, change the capacitance size between resonant rod and lid, reach the object of filter debugging.Compare the filter that adopts tuning screw debugging, filter in the present invention has been saved tuning screw, in resonant rod, do not need to reserve the safe distance between tuning screw and resonant rod, and resonant rod does not need to be fixed in resonant cavity by screw yet, thereby can reduce the diameter of resonant rod, be conducive to improve the Q value of filter cavity, and the loss that reduces filter.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the filter tuner device with tuning screw that Fig. 1 provides for prior art;
The structural representation of the filter tuner device that Fig. 2 provides for the embodiment of the present invention one;
The decomposing schematic representation of the filter tuner device that Fig. 3 provides for the embodiment of the present invention two;
Fig. 4 is the structural representation after Fig. 3 assembles;
The first structural representation of the tight lock part that Fig. 5 provides for the embodiment of the present invention;
The second structural representation of the tight lock part that Fig. 6 provides for the embodiment of the present invention;
The third structural representation of the tight lock part that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the filter that Fig. 8 provides for the embodiment of the present invention three.
Reference numeral:
1,1 ＇-lid, 10-lid bottom surface, 2,2 ＇-resonant cavity, the bottom surface in 20-resonant cavity, 21-through hole, 22-boss, 23-internal thread, 24-groove, 3,3 ＇-resonant rod, 30-resonant rod end face, 31-the first external screw thread, 32-resonant rod bottom, 32 ＇-dodge groove, 4,5,6-tight lock part, 40-the second external screw thread, 41-the 3rd external screw thread, 50-open slot, 60-nut, 7-main body, 8 ＇-tuning screw, 9 ＇-nut
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
Embodiment mono-:
Fig. 2 is the structural representation of the filter tuner device that provides of the present embodiment.As shown in Figure 2, this filter tuner device comprises resonant cavity 2, lid 1, resonant rod 3, wherein the bottom of resonant cavity 2 is provided with through hole 21, resonant rod 3 passes through hole 21 in resonant cavity 2, lid 1 is housed on resonant cavity 2, and by through hole 21, the direction along the bottom vertical with resonant cavity 2 can move up and down resonant rod 3.
Can make like this resonant rod 3 end faces 30 of resonant cavity 2 inside and the distance between lid bottom surface 10 by regulating the length of resonant rod 3 in resonant cavity 2 inside to change, and then can regulate the capacitance size between resonant rod 3 and lid 1, regulate the capacitance size of filter, as when the length of resonant rod 3 in resonant cavity 2 inside is longer, distance between resonant rod end face 30 and lid bottom surface 10 reduces, and electric capacity increases; Otherwise electric capacity reduces.Filter tuner device in the present invention has been saved tuning screw, in resonant rod, do not need to reserve the safe distance between tuning screw and resonant rod, and resonant rod does not need to be fixed in resonant cavity by hold-down screw yet, thereby can reduce the diameter of resonant rod, be conducive to improve the Q value of filter cavity, and the loss that reduces filter.
The power capacity of the increase meeting boostfiltering device of common resonant rod diameter, but for the filter that for example receives only signal, it does not have specific (special) requirements to power capacity, now in order to improve the Q value of filter cavity, under the constant condition of cavity diameter, reduce as much as possible resonant rod diameter, when the tuner employing of filter is for example the structure in background technology, resonant rod is because will guarantee stretching into of tuning screw, therefore the restriction of diameter that reduces to be subject to tuning screw of diameter, and while adopting structure of the present invention, can not be subject to the restriction of tuning screw, therefore the resonant rod in the embodiment of the present invention can be done carefullyyer, further to improve the Q value of resonant cavity, and the loss that reduces filter.
Certainly, resonant rod is not more carefully better, conventionally considering to produce thinner resonant rod under its prerequisite with sufficient intensity, and, the thickness of resonant rod is for resonant cavity, because different filters has the resonant cavity of different size, so the thickness size of resonant rod all sets with actual conditions, no longer this size is specifically limited here.
Embodiment bis-:
Below in conjunction with accompanying drawing 3-Fig. 7, further illustrate the filter tuner device that the present embodiment provides.
As shown in Figure 3 and Figure 4, this filter tuner device comprises resonant cavity 2, lid 1, resonant rod 3, wherein the bottom of resonant cavity 2 is provided with through hole 21, resonant rod 3 passes through hole 21 in resonant cavity 2, lid 1 can be connected by screw or the connected mode such as welding is connected on resonant cavity 2, and this lid 1 is relative with resonant cavity bottom surface 20, resonant rod 3 can move up and down along the direction of the bottom vertical with resonant cavity 2.In embodiments of the present invention, realize resonant rod 3 movably structure can be the mode being threaded, for example, on the medial surface of through hole 21, be provided with internal thread 23, resonant rod 3 is provided with this internal thread 23 first external screw thread 31 of match (can mutually screw and tighten with internal thread 23), can make like this resonant rod 3 be screwed in above-mentioned through hole 21, by rotary harmonic bar 3, make it along removable perpendicular to the direction of bottom surface 20, thereby can adjust the length of resonant rod 3 in resonant cavity, and then adjusted capacitance size between resonant rod 3 and lid 1, realize the object of filter debugging.Certainly, realize resonant rod movably structure be not limited to this, it can also be for example the structure of slide block type, by the mode of sliding, resonant rod is moved up and down along the direction of the bottom vertical with resonant cavity, or can also be the frame mode known to other those skilled in that art, to realize resonant rod edge, move up and down with the direction of the bottom vertical of resonant cavity.Complete tuning after, resonant rod can be fixed up in the length of resonant cavity 2 inside.The embodiment of the present invention is not as restriction.
The bottom surface of resonant cavity 2 can also be provided with the boss 22 shown in Fig. 3 or Fig. 4, boss 22 is highly less than the length of resonant rod 3, the bottom surface 20 of boss 22 in resonant cavity is towards lid direction, vertical with bottom surface 20, this boss 22 is provided with the through hole 21 with internal thread 23, resonant rod 3 is screwed in through hole 21 along the direction of the bottom vertical with resonant cavity 2, not only can improve the intensity of resonant cavity 2 like this, and can play to the movement of resonant rod 3 effect of guiding by boss 22 is set.
The centre frequency of filter can be by regulating electric capacity (electric capacity of the filter) size variation between resonant rod 3 and lid 1 to change, after the length of resonant rod 3 in resonant cavity 2 is determined (be distance definite) between resonant rod 3 end faces and lid bottom surface 10, the centre frequency of filter is also determined, now can lock resonant rod 3, avoid resonant rod 3 to be moved and affect frequency, therefore in the embodiment of the present invention, can also comprise tight lock part alternatively, this tight lock part is for being locked at resonant cavity 2 by resonant rod 3.
Tight lock part can be respectively three kinds of following different structures: the first structure: as shown in Figure 5, tight lock part 4 comprises and is located on resonant rod 3 and at least one section second external screw thread 40 and at least one section three external screw thread 41 relative with internal thread 23, wherein, the second external screw thread 40 in tight lock part 4 is adjacent with the 3rd external screw thread 41, or while having multistage the second external screw thread 40 and multistage the 3rd external screw thread 41 in tight lock part 4, at least one section of the second external screw thread 40 and at least one section of the 3rd external screw thread 41 are adjacent.The tooth of the second external screw thread 40 is apart from the tooth that is greater than the first external screw thread 31 apart from (distances between adjacent two teeth), the tooth of the 3rd external screw thread 41 is apart from the tooth distance that is less than the first external screw thread 31, wherein, tight lock part 4 is adjacent with the first external screw thread 31, also can be between two section of first external screw thread 31 of resonant rod 3.Particularly, at resonant rod 3, be screwed into after through hole 21, because the second external screw thread 40 and the 3rd external screw thread 41 make the second external screw thread 40 parts internal thread 23 parts corresponding thereto that deformation easily occur with not mating of internal thread 23, the deformation power producing is locked in through hole 21 resonant rod 3, and resonant rod 3 is locked on resonant cavity 2.When needs are debugged, can be by resonant rod 3 being carried out to External Force Acting such as instruments such as screwdrivers, now, the bottom 32 of resonant rod 3 can be shaped with the receiving channel turning for instruments such as screwdrivers.When this External Force Acting is greater than the coupling mechanism force (being above-mentioned deformation power) between resonant rod 3 and through hole 21, resonant rod 3 can move around up and down along these through hole 21 axles, to reach the object of resonant rod 3 debugging.
In order to guarantee that resonant rod 3 has enough coupling mechanism forces in through hole 21, for the second external screw thread 40, can at least comprise 3 threads, generally can comprise 3 to 5 threads; For the 3rd external screw thread 41, also can at least comprise 3 threads equally, generally can comprise 3 to 5 threads.
In addition, the length and location of tight lock part 4 can be determined according to the length of resonant rod 3.When the length of resonant rod 3 is long, a plurality of above-mentioned tight lock part 4 of fair amount is set between also can be on resonant rod 3.
The second structure: as shown in Figure 6, tight lock part 5 can comprise and being located on resonant rod 3, and two the above open slots 50 relative with internal thread 23, wherein, the opening degree of depth of open slot 50 is greater than the degree of depth of the first external screw thread 31, for the ease of producing, general opening direction can be axially vertical with resonant rod 3, between two adjacent open slots 50, width at least should be greater than tooth distance, can regulate the width between open slot according to the nominal diameter of internal thread 23, generally speaking, the nominal diameter of internal thread 23 is large, between two adjacent open slots, width is also larger, and the width between adjacent two open slots affects coupling mechanism force.Particularly, at resonant rod 3, be screwed into after through hole 21, because deformation easily occurs the part between two adjacent apertures grooves 50 in resonant rod 3, the deformation power producing is locked in through hole 21 resonant rod 3, be that resonant rod 3 is locked on resonant cavity 2, and coupling mechanism force is also larger when the width between adjacent two open slots 50 is larger.When needs are debugged, can be by resonant rod 3 being carried out to External Force Acting such as instruments such as screwdrivers, now, the bottom 32 of resonant rod 3 can be shaped with the receiving channel turning for instruments such as screwdrivers.When this External Force Acting is greater than the coupling mechanism force between resonant rod 3 and through hole 21, resonant rod 3 can be along moving up and down with the direction of resonant cavity 2 bottom vertical, to reach the object of resonant rod 3 debugging.
Based on the second structure, the embodiment of the present invention can make the opening direction of two adjacent apertures grooves 50 contrary, resonant rod 3 is when the interior rotation of through hole 21 like this, it is identical that the torsion direction that the part at one of them open slot 50 place produces is adjacent the torsion direction that the part at open slot 50 places produces, can make like this resonant rod 3 part ratios between adjacent apertures groove 50 be easier to occur deformation, to produce comparatively firm deformation power.
In order further to make resonant rod 3 parts between adjacent apertures groove 50 that deformation easily occurs, the degree of depth of above-mentioned open slot 50 can be greater than the radius of resonant rod 3, and is less than the diameter of resonant rod 3, and for example the opening degree of depth is 2/3rds of resonant rod 3 diameter dimensions.It is emphasized that when the degree of depth of open slot is greater than resonant rod radius, also will guarantee that resonant rod self has good intensity, so the concrete depth value of open slot should carry out reasonable value according to actual conditions.
As optional scheme, this tight lock part comprises at least two open slots 50, these at least two open slots 50 positions are close to the bottom of resonant rod 3, so not only make two parts between open slot 50 generation coupling mechanism force that easily deforms, nor can make coupling mechanism force excessive and cannot carry out good debug.
But, in the situation that allowing, also can near the part of bottom, be provided with an open slot at resonant rod 3, the resonant rod of this open slot lower end part easily deforms like this, thereby produces the coupling mechanism force of locking resonant rod 3.
The third structure: as shown in Figure 7, tight lock part 6 comprises the nut 60 matching with this first external screw thread 31, nut 60 the first external screw thread 31 part lockings that stretch out the bottom outside resonant cavity by resonant rod 3 like this, so that resonant rod 3 is locked on resonant cavity 2.When needs carry out resonance regulation, unclamp nut 60, rotary harmonic bar 3 so that resonant rod 3 along the direction of the bottom vertical with resonant cavity 2, move up and down, then by instruments such as spanner or sleeves by nut 60 lockings, reach the object of resonant rod 3 debugging.
Refer again to Fig. 7, bottom that can also be outside resonant cavity 2 and the position relative with through hole 21 are provided with groove 24, the first external screw thread 31 parts that resonant rod 3 stretches out are positioned at groove 24, the height of groove 24 is greater than height of nut, and the height of groove 24 is less than the thickness of the bottom of resonant cavity 2, complete tuning after, can make resonant rod 3 stretch out the bottom of resonant cavity 2 and be no more than groove, and then can not increase the whole height of resonant cavity 2, improve the space availability ratio of this filter tuner device.
The resonant cavity 2 of mentioning in aforementioned each embodiment, lid 1 and resonant rod 3 are metalwork, wherein, the material of resonant cavity 2, lid 1 can adopt aluminium alloy, magnesium alloy etc., and the material of resonant rod 3 can adopt iron or copper etc., tuning performance that like this can boostfiltering device.And for the tuning performance of boostfiltering device further, these metalworks all carry out surface treatment, such as electric conductive oxidation, electro-coppering, electrosilvering etc.
What also need to further illustrate is, resonant rod 3 is in the process moving around, not only can cause the capacitance variations of filter because distance between resonant rod end face 30 and lid bottom surface 10 changes, but also can change that (this is when increasing due to the inductance that causes filter that changes of distance between the bottom surface 20 in resonant rod end face 30 and resonant cavity, inductance reduces, otherwise increases).
In addition, according to aforesaid content and accompanying drawing, can also know clearly in the embodiment of the present invention, there is no tuning screw, reduce like this amount of parts of filter, can reduce on the one hand the cost of filter, also can simplify assembling on the other hand.
Embodiment tri-:
The embodiment of the present invention also provides a kind of filter, as shown in Figure 8, this filter comprises main body 7, in main body 7, be provided with at least one filter tuner device, described in each, filter tuner device comprises resonant cavity 2, lid 1, resonant rod 3, and the bottom of resonant cavity 2 is provided with through hole, and resonant rod 3 is screwed in through hole, wherein lid 1 is housed on resonant cavity 2, and by through hole, the direction along the bottom vertical with resonant cavity 2 can move up and down resonant rod 3.
Can make like this to stretch into resonant rod 3 end faces of resonant cavity 2 inside and the distance between lid bottom surface by regulating the length of resonant rod 3 in resonant cavity 2 to change, and then can regulate the capacitance size between resonant rod 3 and lid 1, also regulate the capacitance size of filter, as when the length of resonant rod 3 in resonant cavity 2 is longer, distance between resonant rod end face and lid bottom surface reduces, and electric capacity increases; Otherwise electric capacity reduces.Filter in the present invention has been saved tuning screw, need not consider the safe distance between tuning screw and resonant rod, thereby can make resonant rod do thinnerly, is conducive to improve the Q value of filter cavity, and the loss that reduces filter.
Because the filter tuner device at this place can be aforementioned any mode in the cards, therefore no longer filter tuner device is repeated here.
As a kind of optional mode, a plurality of resonant cavities 2 can be by forming by a plurality of dividing plates are set in main body 7, and its median septum can be that the mode by pegging graft is fixed in main body 7, like this quantity of dividing plate can be set according to practical situations; Or be shaped in main body 7, make easy to make, the work simplification of filter.
Be understandable that, in figure, show that described filter construction does not form the restriction to filter, also comprise input circuit, output loop, connector etc., input circuit and output loop are connected in main body 7, and input circuit and output loop are connected to connector, connector can be connected to functional unit by cable, for example printed circuit board (PCB) (Printed Circuit Board, PCB) and antenna etc.
Above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (15)
1. a filter tuner device, it is characterized in that, comprise resonant cavity, lid, resonant rod, described resonant cavity bottom is provided with through hole, described resonant rod passes described through hole in resonant cavity, described lid is housed on described resonant cavity, and described resonant rod is removable along the direction of the bottom vertical with described resonant cavity by described through hole.
2. filter tuner device according to claim 1, it is characterized in that, described through hole has internal thread, described resonant rod is provided with the first external screw thread matching with described internal thread, described resonant rod is screwed in described through hole, by rotating described resonant rod, makes its direction along the bottom vertical with described resonant cavity removable.
3. filter tuner device according to claim 2, it is characterized in that, the bottom surface in described resonant cavity is provided with towards the boss of described lid direction, and described boss is vertical with the bottom surface in resonant cavity, highly be less than the length of described resonant rod, and described boss is provided with described through hole.
4. according to the filter tuner device described in claim 2 or 3, it is characterized in that, also comprise tight lock part, described tight lock part is for being locked at described resonant cavity by described resonant rod.
5. filter tuner device according to claim 4, it is characterized in that, described tight lock part comprises and being located on described resonant rod and relative with described internal thread at least one section of the second external screw thread and the 3rd external screw thread, and described the second external screw thread in described tight lock part is adjacent with described the 3rd external screw thread; Described the second externally threaded tooth is apart from being greater than described the first externally threaded tooth distance, and described the 3rd externally threaded tooth is apart from being less than described the first externally threaded tooth distance.
6. filter tuner device according to claim 4, it is characterized in that, described tight lock part comprises and being located on described resonant rod and two the above open slots relative with described internal thread, and the opening degree of depth of described open slot is greater than the described first externally threaded degree of depth.
7. filter tuner device according to claim 6, is characterized in that, the width between adjacent two described open slots is at least greater than described the first externally threaded tooth distance.
8. according to the filter tuner device described in claim 6 or 7, it is characterized in that, the opening direction of two adjacent described open slots is contrary.
9. filter tuner device according to claim 8, is characterized in that, the degree of depth of described open slot is greater than the radius of described resonant rod, and is less than the diameter of described resonant rod.
10. filter tuner device according to claim 9, is characterized in that, described two above open slots are close to the bottom of described resonant rod.
11. filter tuner devices according to claim 4, is characterized in that, described tight lock part comprises the nut matching with described the first external screw thread, for the first male thread portion locking that described resonant rod is stretched out from described resonant cavity bottom.
12. filter tuner devices according to claim 11, it is characterized in that, bottom outside described resonant cavity and the position relative with described boss are provided with groove, the height of described groove is greater than the height of described nut, and the height of described groove is less than the thickness of the bottom of resonant cavity, the first male thread portion and described nut that described resonant rod stretches out are positioned at described groove.
13. according to the filter tuner device described in claim 1-12, it is characterized in that, described resonant cavity, described lid and described resonant rod are the metalwork carrying out after surface treatment.
14. filter tuner devices according to claim 13, is characterized in that, the material of described resonant cavity, described lid is respectively aluminium alloy, magnesium alloy, and the material of described resonant rod is iron or copper.
15. 1 kinds of filters, is characterized in that, comprise main body, comprise the filter tuner device described in a plurality of claim 1-14 any one in described main body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/081142 WO2015018051A1 (en) | 2013-08-09 | 2013-08-09 | Filter tuning device and filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103650237A true CN103650237A (en) | 2014-03-19 |
| CN103650237B CN103650237B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380000951.2A Active CN103650237B (en) | 2013-08-09 | 2013-08-09 | A kind of filter tuning apparatus and filter |
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|---|---|
| CN (1) | CN103650237B (en) |
| WO (1) | WO2015018051A1 (en) |
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| CN105337008A (en) * | 2015-12-11 | 2016-02-17 | 深圳市虹远通信有限责任公司 | Low frequency coaxial cavity filter and manufacturing method thereof |
| KR101730084B1 (en) | 2015-04-20 | 2017-04-25 | 주식회사 케이엠더블유 | Radio frequency filter with cavity structure |
| CN106992345A (en) * | 2017-06-07 | 2017-07-28 | 深圳市威富通讯技术有限公司 | Cavity body filter |
| WO2020019867A1 (en) * | 2018-07-27 | 2020-01-30 | 中兴通讯股份有限公司 | Cavity filter |
| CN112787056A (en) * | 2021-01-28 | 2021-05-11 | 华沣通信科技有限公司 | Adjustable cavity filter |
| CN112952324A (en) * | 2021-04-02 | 2021-06-11 | 京信射频技术(广州)有限公司 | Filter, resonator and communication device |
| CN118073807A (en) * | 2024-04-25 | 2024-05-24 | 成都世源频控技术股份有限公司 | Interval-adjustable resonator |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101730084B1 (en) | 2015-04-20 | 2017-04-25 | 주식회사 케이엠더블유 | Radio frequency filter with cavity structure |
| CN107980188A (en) * | 2015-04-20 | 2018-05-01 | 株式会社Kmw | Radio-frequency filter with cavity structure |
| CN104765008A (en) * | 2015-05-06 | 2015-07-08 | 西南应用磁学研究所 | Data processing method for improving effective line width measurement accuracy |
| CN105337008A (en) * | 2015-12-11 | 2016-02-17 | 深圳市虹远通信有限责任公司 | Low frequency coaxial cavity filter and manufacturing method thereof |
| CN105337008B (en) * | 2015-12-11 | 2019-04-02 | 深圳市虹远通信有限责任公司 | Low-frequency Coaxial cavity body filter and preparation method thereof |
| CN106992345A (en) * | 2017-06-07 | 2017-07-28 | 深圳市威富通讯技术有限公司 | Cavity body filter |
| CN106992345B (en) * | 2017-06-07 | 2019-05-10 | 深圳市威富通讯技术有限公司 | Cavity body filter |
| WO2020019867A1 (en) * | 2018-07-27 | 2020-01-30 | 中兴通讯股份有限公司 | Cavity filter |
| CN112787056A (en) * | 2021-01-28 | 2021-05-11 | 华沣通信科技有限公司 | Adjustable cavity filter |
| CN112952324A (en) * | 2021-04-02 | 2021-06-11 | 京信射频技术(广州)有限公司 | Filter, resonator and communication device |
| CN118073807A (en) * | 2024-04-25 | 2024-05-24 | 成都世源频控技术股份有限公司 | Interval-adjustable resonator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103650237B (en) | 2015-12-30 |
| WO2015018051A1 (en) | 2015-02-12 |
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