CN101924261A - Communication equipment, medium filter and medium resonant rod - Google Patents
Communication equipment, medium filter and medium resonant rod Download PDFInfo
- Publication number
- CN101924261A CN101924261A CN201010218838XA CN201010218838A CN101924261A CN 101924261 A CN101924261 A CN 101924261A CN 201010218838X A CN201010218838X A CN 201010218838XA CN 201010218838 A CN201010218838 A CN 201010218838A CN 101924261 A CN101924261 A CN 101924261A
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- resonant rod
- medium resonant
- dielectric filter
- dented space
- medium
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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
- H01P7/10—Dielectric resonators
-
- 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
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
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Abstract
The invention discloses communication equipment, a medium filter and a medium resonant rod. The medium resonant rod comprises a first end and a second end, the first end is depressed to the second end to form a first pit space; a fixed through hole is arranged on the bottom of the first pit space; and a connecting pin of the medium filter fixes the medium resonant rod on the bottom of the cavity body through the fixed through hole. The medium filter can be conveniently assembled, disassembled and maintained and has low production cost compared with the conventional medium filter which is produced by welding the medium resonant rod on the cavity bottom or a base.
Description
Technical field
The present invention relates to the wave filter technology field, more specifically relate to communication equipment, dielectric filter and medium resonant rod.
Background technology
Filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
At present, in mobile communication system, generally use filter to come that antenna emission and the signal that receives are carried out frequency and select.Filter generally includes cavity and resonant rod, is provided with a plurality of resonant cavitys in the cavity, is provided with one or more medium resonant rods in the resonant cavity.In the filter large-scale production, need to use large batch of resonant rod.Traditional resonant rod is generally cylindrical, shown in Fig. 1 (a), resonant rod 111 directly can be welded on the cavity bottom surface 112; Shown in Fig. 1 (b), also can earlier resonant rod 121 be welded on the base 123, the base that will be welded with resonant rod with the mode of screw lock is fixed on the cavity bottom surface 122 again.
But in research and practice process to prior art, the present inventor finds, adopts welding manner that resonatron and cavity are fixed, inconvenient disassembly and maintenance, and cost is higher.
Summary of the invention
Communication equipment provided by the invention, dielectric filter and medium resonant rod can make things convenient for the medium resonant rod disassembly and maintenance, reduce the cost of dielectric filter.
The invention provides a kind of dielectric filter, comprise cavity and medium resonant rod, described medium resonant rod comprises first end and second end, and described first end forms first dented space to second concave end, and the described first dented space bottom surface is provided with fixed via; Described dielectric filter also comprises connected nail, and described connected nail passes described fixed via described medium resonant rod is fixed on the cavity bottom surface.
The invention provides a kind of communication equipment, it comprises above-mentioned dielectric filter, and this dielectric filter is used for that signal of communication is carried out frequency and selects.
The present invention also provides a kind of medium resonant rod, comprises first end and second end, and described first end forms first dented space to second concave end, and the described first dented space bottom surface is provided with fixed via.
In the embodiment of the invention, medium resonant rod comprises first end and second end, first end caves inward and forms first dented space, the fixed via that the connected nail of dielectric filter passes on the first dented space bottom surface is fixed in medium resonant rod on the cavity bottom surface, be welded on medium resonant rod on the cavity bottom surface or be welded on dielectric filter on the base with respect to existing, easy disassembly and maintenance, production cost is low.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 (a) and Fig. 1 (b) are prior art medium Filter Structures schematic diagrames;
Fig. 2 is the cross-sectional schematic of the embodiment of the invention one medium filter;
Fig. 3 is the cross-sectional schematic of the embodiment of the invention two medium filters;
Fig. 4 (a) is the cross-sectional schematic of two media resonant rod in the embodiment of the invention two;
Fig. 4 (b) is the cross-sectional schematic of the embodiment of the invention two medium filters;
Fig. 5 is the embodiment of the invention three medium Filter Structures schematic diagrames.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one, a kind of dielectric filter comprise cavity and medium resonant rod, with reference to figure 2:
There is shown the situation that a resonant cavity is arranged in the dielectric filter, be appreciated that dielectric filter also can comprise a plurality of resonant cavitys.
Medium resonant rod 210 comprises first end 211 and second end 212, and described first end 211 is recessed to form first dented space 230 to second end 212, and described first dented space 230 bottom surfaces are provided with fixed via.
In the embodiment of the invention, the first dented space bottom surface can be on the arbitrary height between first end and second end, generally, and more close second end in the bottom surface of first dented space, so that make the scope of first dented space bigger, thereby make that the adjustable range of tuning screw is bigger; Described fixed via is described connected nail via hole, can be unthreaded hole, also can be screwed hole or other conventional through holes.
Dielectric filter also comprises connected nail 220, and described connected nail 220 passes described fixed via described medium resonant rod is fixed on the cavity bottom surface.
In the embodiment of the invention one, medium resonant rod comprises first end and second end, connected nail passes fixed via medium resonant rod is fixed on the cavity bottom surface, the bottom surface of medium resonant rod is contacted with the cavity bottom surface, so just can with the medium resonant rod secure fixation in the resonant cavity of dielectric filter, simultaneously, adopt the mode of connected nail fixing and locking, can be as required in the later stage, disassembly and maintenance medium resonant rod easily.
Embodiment two, a kind of dielectric filter comprise cavity and medium resonant rod, with reference to figure 3:
In the present embodiment, medium resonant rod can be one-body molded, for example adopts the mode integral die-cast of compression casting to mold the medium resonant rod that has first dented space and fixed via; Described medium resonant rod also can be with glue with the bonding formation of several media components; each media components can be selected identical or different dielectric material for use; sticky bit between each parts is equipped with multiple; concrete implementation can the blank medium resonant rod cross-sectional schematic Fig. 4 (a); be appreciated that; two kinds of bonding locations shown in the above schematic diagram are two kinds of preferred implementations of present embodiment, and the routine distortion that those skilled in the art makes on this basis is all within protection scope of the present invention.
In the present embodiment, on the cavity bottom surface installing hole can be set, be used for cooperating described medium resonant rod is fixed in the cavity bottom surface with described connected nail.The aperture of installing hole and the size of connected nail adapt, and make connected nail to be fixed in the resonant cavity reliably.Installing hole can be set directly on the cavity bottom surface, also can on the cavity bottom surface, erecting bed be set, installing hole is set on erecting bed again, by on the cavity bottom surface, erecting bed being set, can be under the situation of not thickening the cavity bottom surface, increase the axial height of installing hole, it is bigger to make that connected nail enters the degree of depth of cavity bottom surface, and then makes medium resonant rod more reliable with contacting of cavity bottom surface.
In the present embodiment, be provided with the dielectric pad between the first dented space bottom surface and the connected nail.By between the first dented space bottom surface and connected nail, the dielectric pad being set, when the mounting or dismounting connected nail, can reduce the wearing and tearing of ailhead to dielectric filter, and can increase the steadiness of connected nail, and make between connected nail and the pad, contact more reliably between pad and the first dented space bottom surface.
In the present embodiment, can do chamfering in the inwall end of fixed via, shown in Fig. 4 (b), connected nail adopts sunk screw, and sunk screw cooperates with the chamfering of fixed via, makes resonant rod coaxial with the fixed via of cavity, and, adopt sunk screw can make the ailhead of screw be absorbed in chamfering, thereby make the spatial volume of the dented space of winning bigger, and then make the later stage that bigger adjustable range be arranged when adopting tuning screw to regulate.Certainly, described chamfered can be rounding or chamfer, and the mode of concrete chamfering and degree can be provided with according to the structure and the shape of connected nail, are not construed as limiting the invention.
In the present embodiment, medium resonant rod comprises first end and second end, connected nail passes fixed via medium resonant rod is fixed on the cavity bottom surface, the bottom surface of medium resonant rod is contacted with the cavity bottom surface, so just can with the medium resonant rod secure fixation in the resonant cavity of dielectric filter, simultaneously, adopt the mode of connected nail fixing and locking, can be as required in the later stage, disassembly and maintenance medium resonant rod easily.
Embodiment three, a kind of dielectric filter comprise cavity and medium resonant rod, with reference to figure 5:
Medium resonant rod 510 comprises first end 511 and second end 512, and described first end 511 is recessed to form first dented space 530 to second end 512, and the described first dented space bottom surface is provided with fixed via; Dielectric filter also comprises connected nail 520, and connected nail 520 passes described fixed via described medium resonant rod is fixed on the cavity bottom surface 531.
Second end 512 of medium resonant rod is recessed to form second dented space to first end 511, and described second dented space is communicated with by described fixed via with described first dented space 530, and described second dented space and described erecting bed 532 adapt.So just make erecting bed be housed in second dented space of medium resonant rod, thereby medium resonant rod can be fixed in the cavity more reliably.Certainly, second end of medium resonant rod also can be to first concave end, and specific implementation is participated in embodiment two.
In the present embodiment, the material of described connected nail can adopt metal material, stainless steel for example, also can adopt plastic cement, for example, POM (Polyoxymethylene, polyformaldehyde), the tensile strength of POM, flexural strength, endurance life are all higher, have good physics, machinery and chemical property.
In the present embodiment, medium resonant rod comprises first end and second end, connected nail passes fixed via and medium resonant rod is fixed on the erecting bed of cavity bottom surface, so just can be in the resonant cavity of dielectric filter with the medium resonant rod secure fixation, simultaneously, adopt the mode of connected nail fixing and locking, can be as required in the later stage, disassembly and maintenance medium resonant rod easily.
Embodiment four, a kind of medium resonant rod comprise first end and second end, and described first end forms first dented space to second concave end, and the described first dented space bottom surface is provided with fixed via.
In the present embodiment, medium resonant rod can be one-body molded, for example adopts the mode integral die-cast of compression casting to mold the medium resonant rod that has first dented space and fixed via; Described medium resonant rod also can form by several media components are bonding, and the material of each parts can be identical or different, and the sticky bit between each parts is equipped with the description of multiple, concrete implementation in can reference example two.
In the present embodiment, the top of the described first dented space bottom surface can be provided with the dielectric pad, the dielectric pad adopts insulating material to make, for example (the PTFE Chinese is a polytetrafluoroethylene to PTFE, English name Poly tetra fluoro ethylene), PTFE has extremely low coefficient of friction, good resistance to wear and fabulous chemical stability, and therefore, present embodiment preferably adopts the dielectric pad of PTFE material.The material, size, shape, the thickness that are appreciated that the dielectric pad can have multiple implementation as required, and concrete implementation is not construed as limiting the invention.By above the first dented space bottom surface, the dielectric pad being set, in subsequent technique during the mounting medium resonant rod, can reduce the wearing and tearing of the fixed part that is used for fixing medium resonant rod to saddle, and can reduce even eliminate the slit between the fixed part and the first dented space bottom surface, make between fixed part and the first dented space bottom surface contact more reliable, and then make between medium resonant rod and the cavity bottom surface contact more reliable.
In the present embodiment, the end surface of medium resonant rod can carry out electroplating processes, and that the mode of electroplating processes can adopt is silver-plated, in the copper facing, nickel plating one or more.
The medium resonant rod that present embodiment provides comprises first end and second end, and first end forms first dented space to second concave end, and the first dented space bottom surface is provided with fixed via.In subsequent technique during the mounting medium resonant rod, can make fixed part pass fixed via is fixed in medium resonant rod on the cavity bottom surface, the bottom surface of medium resonant rod is contacted with the cavity bottom surface, so just can be in the resonant cavity of dielectric filter with the medium resonant rod secure fixation, can be as required in the later stage, disassembly and maintenance medium resonant rod easily.
More than dielectric filter and medium resonant rod that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. a dielectric filter comprises cavity and medium resonant rod, it is characterized in that, described medium resonant rod comprises first end and second end, and described first end forms first dented space to second concave end, and the described first dented space bottom surface is provided with fixed via; Described dielectric filter also comprises connected nail, and described connected nail passes described fixed via described medium resonant rod is fixed on the cavity bottom surface.
2. dielectric filter as claimed in claim 1 is characterized in that, described medium resonant rod is one-body molded or form by several media components are bonding.
3. dielectric filter as claimed in claim 1 is characterized in that, described cavity bottom surface is provided with installing hole, is used for cooperating with described connected nail described medium resonant rod is fixed in the cavity bottom surface.
4. dielectric filter as claimed in claim 3 is characterized in that, described cavity bottom surface is provided with erecting bed, and described installing hole is arranged on the described erecting bed.
5. dielectric filter as claimed in claim 4, it is characterized in that, second end of described medium resonant rod forms second dented space to first concave end, described second dented space is communicated with by described fixed via with described first dented space, and described second dented space and described erecting bed adapt.
6. as any described dielectric filter of claim 1 to 5, it is characterized in that, be provided with the dielectric pad between described first dented space bottom surface and the connected nail.
7. as any described dielectric filter of claim 1 to 5, it is characterized in that the inwall end-beveling of described fixed via.
8. as any described dielectric filter of claim 1 to 5, it is characterized in that the material of described connected nail is a plastic cement.
9. a communication equipment is characterized in that, described communication equipment comprises that according to any described dielectric filter in the claim 1 to 8 described dielectric filter is used for that signal of communication is carried out frequency and selects.
10. a medium resonant rod is characterized in that, described medium resonant rod comprises first end and second end, and described first end forms first dented space to second concave end, and the described first dented space bottom surface is provided with fixed via.
11. medium resonant rod as claimed in claim 10 is characterized in that, described medium resonant rod is one-body molded or form by several media components are bonding.
12., it is characterized in that the top of the described first dented space bottom surface is provided with the dielectric pad as claim 10 or 11 described medium resonant rods.
13., it is characterized in that described medium resonant rod end surface silver-plated or copper facing or nickel plating as claim 10 or 11 described medium resonant rods.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010218838XA CN101924261A (en) | 2010-07-05 | 2010-07-05 | Communication equipment, medium filter and medium resonant rod |
| PCT/CN2011/076731 WO2012003783A1 (en) | 2010-07-05 | 2011-06-30 | Communication equipment, dielectric filter and dielectric resonance bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010218838XA CN101924261A (en) | 2010-07-05 | 2010-07-05 | Communication equipment, medium filter and medium resonant rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101924261A true CN101924261A (en) | 2010-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010218838XA Pending CN101924261A (en) | 2010-07-05 | 2010-07-05 | Communication equipment, medium filter and medium resonant rod |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101924261A (en) |
| WO (1) | WO2012003783A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012003783A1 (en) * | 2010-07-05 | 2012-01-12 | 深圳市大富科技股份有限公司 | Communication equipment, dielectric filter and dielectric resonance bar |
| CN111430859A (en) * | 2020-03-24 | 2020-07-17 | 深圳市大富科技股份有限公司 | Dielectric filter and communication base station |
| CN112768883A (en) * | 2020-12-11 | 2021-05-07 | 深圳市信维通信股份有限公司 | Antenna unit and folding dielectric resonator antenna module |
| WO2022106266A1 (en) * | 2020-11-19 | 2022-05-27 | Commscope Italy S.R.L. | Resonant cavity filters with dielectric resonator assemblies mounted directly on the floor of the filter housing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201203196D0 (en) * | 2012-02-24 | 2012-04-11 | Radio Design Ltd | Filter assembly and method of manufacture thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933345A (en) * | 2006-07-27 | 2007-03-21 | 奥雷通光通讯设备（上海）有限公司 | Apparatus capable of increasing inductive coupling regulating range |
| CN201421872Y (en) * | 2009-04-23 | 2010-03-10 | 鸿富锦精密工业（深圳）有限公司 | Hollow cavity filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417811Y (en) * | 2009-06-10 | 2010-03-03 | 大富（深圳）科技有限公司 | Resonating tube and cavity filter with the resonating tube |
| CN101924261A (en) * | 2010-07-05 | 2010-12-22 | 深圳市大富科技股份有限公司 | Communication equipment, medium filter and medium resonant rod |
| CN201804986U (en) * | 2010-07-05 | 2011-04-20 | 深圳市大富科技股份有限公司 | Communication equipment, medium filter and medium resonance pole |
-
2010
- 2010-07-05 CN CN201010218838XA patent/CN101924261A/en active Pending
-
2011
- 2011-06-30 WO PCT/CN2011/076731 patent/WO2012003783A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933345A (en) * | 2006-07-27 | 2007-03-21 | 奥雷通光通讯设备（上海）有限公司 | Apparatus capable of increasing inductive coupling regulating range |
| CN201421872Y (en) * | 2009-04-23 | 2010-03-10 | 鸿富锦精密工业（深圳）有限公司 | Hollow cavity filter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012003783A1 (en) * | 2010-07-05 | 2012-01-12 | 深圳市大富科技股份有限公司 | Communication equipment, dielectric filter and dielectric resonance bar |
| CN111430859A (en) * | 2020-03-24 | 2020-07-17 | 深圳市大富科技股份有限公司 | Dielectric filter and communication base station |
| WO2022106266A1 (en) * | 2020-11-19 | 2022-05-27 | Commscope Italy S.R.L. | Resonant cavity filters with dielectric resonator assemblies mounted directly on the floor of the filter housing |
| US11682820B2 (en) | 2020-11-19 | 2023-06-20 | Commscope Italy S.R.L. | Resonant cavity filter comprising a dielectric resonator mounted to a hollow conductive body by a threaded dielectric fastener |
| US12062828B2 (en) | 2020-11-19 | 2024-08-13 | Commscope Italy, S.R.L. | Resonant cavity filter comprising a dielectric resonator mounted to a conductive housing by a dielectric fastener located within a longitudinal bore of the dielectric resonator |
| CN112768883A (en) * | 2020-12-11 | 2021-05-07 | 深圳市信维通信股份有限公司 | Antenna unit and folding dielectric resonator antenna module |
| CN112768883B (en) * | 2020-12-11 | 2023-07-18 | 深圳市信维通信股份有限公司 | Antenna unit and folding dielectric resonator antenna module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012003783A1 (en) | 2012-01-12 |
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Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Applicant after: Shenzhen Tat Fook Technology Co., Ltd. Address before: 518108 Guangdong city of Shenzhen province Baoan District alqun Shiyan road with rich industrial area 1-2 building Applicant before: Shenzhen Tat Fook Technology Co., Ltd. |
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Application publication date: 20101222 |