CN102496765B - Dielectric filter and dielectric resonator thereof - Google Patents
Dielectric filter and dielectric resonator thereof Download PDFInfo
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- CN102496765B CN102496765B CN201110381847.5A CN201110381847A CN102496765B CN 102496765 B CN102496765 B CN 102496765B CN 201110381847 A CN201110381847 A CN 201110381847A CN 102496765 B CN102496765 B CN 102496765B
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Abstract
The invention relates to a dielectric filter and a dielectric resonator thereof. The dielectric resonator comprises: a cavity (210); a dielectric resonant column (240), which is in the cavity; a thin cover plate (230), which is installed at an open end of the cavity (210) and is contacted with the end surface of the dielectric resonant column (240); and an outer cover plate (220), which is installed at the outboard of the thin cover plate (230) and includes an intermediate part (222); an outer frame (224); and an elastic connection structure, which connects the intermediate part (222) and the outer frame (224). Besides, when the elastic connection structure is in an elastic deformation state, the thin cover plate (230) is tightly contacted with the end surface of the dielectric resonant column (240); the elastic connection structure is a net structure or comprises a plurality of radial ribs; and the elastic connection structure can be generate large deformation, so that the thin cover plate and the end surface of the dielectric resonant column are tightly contacted. According to the invention, the dielectric resonator has a good effect and is convenient for manufacturing and assembling.
Description
[technical field]
The present invention relates to field of microwave communication, particularly relate to dielectric filter and dielectric resonator thereof.
[background technology]
Filter is widely used in various mobile communication system, for the clutter outside filtering communication signal frequency or interference signal.The continuous lifting of communication system performance, proposes new requirement to filter, requires that filter loss is little, miniaturized.TM mould dielectric filter due to Q value high, loss is little, good temp characteristic, can reduce the advantages such as volume, more and more come into one's own.
Typical TM mould dielectric filter is formed according to certain structure cascade by several TM mould dielectric resonators, each dielectric resonator is made up of dielectric resonance post and Metal cavity, dielectric resonance post upper and lower end face and metallic cavity upper and lower end face keep good and contact extremely important, otherwise can affect the performance of filter.Therefore, in the middle of the design of TM mould dielectric filter, ensure that dielectric resonance post upper and lower end face and metallic cavity upper and lower end face keep good contacting to be crucial.Existing scheme one by welding, dielectric resonance post upper and lower end face and metallic cavity upper and lower end face is kept in touch, and this kind of scheme is very high to welding process requirement, and weld horizontal affects finished product rate, and handling and maintenance inconvenience.
Another kind of scheme is that as shown in Figure 1, resonant column 240 ' is contacted with the upper cover plate 220 ' of cavity 210 ' by shell fragment 230 ', and shell fragment 230 ' is produced pressure by compressing by adding shell fragment to realize contact, thus realizes contacting closely.A defect of this kind of scheme is that contact-making surface easily becomes irregular, makes contact-making surface discontinuity, causes loose contact, penalty.
[summary of the invention]
An object of the present invention is to provide a kind of being convenient to manufacture and the dielectric resonator of stable performance.This dielectric resonator comprises cavity and is positioned at the dielectric resonance post of cavity, and described dielectric resonator also comprises: the thin cover plate being installed to described cavity hatch end, the end contact of described thin cover plate and described dielectric resonance post; Be installed to the outer cover plate outside described thin cover plate, described outer cover plate comprises pars intermedia, housing and connects the elastic connection structure of described pars intermedia and housing, makes the end face close contact of described thin cover plate and described dielectric resonance post when described elastic connection structure is in elastic deformation state.
As a kind of preferred version, described elastic connection structure comprises some radial muscle, the pars intermedia of described muscle connecting lid plate and housing.
As a kind of preferred version, described elastic connection structure is network structure.
As a kind of preferred version, described elastic connection structure comprise at least one annulus, for connect at least one annulus described and described pars intermedia muscle, be connected described in the muscle of at least one annulus and described housing.
As a kind of preferred version, described annulus is closed annulus.
As a kind of preferred version, the bottom surface of described cavity is provided with stopper slot for limiting the contact position of the lower surface of described dielectric resonance post.
As a kind of preferred version, described stopper slot is the concentric circles concentric with described dielectric resonance post, and described concentrically ringed diameter equals or slightly larger than the external diameter of described dielectric resonance post.
As a kind of preferred version, described dielectric resonance post is hollow cylindric; Described stopper slot is the donut concentric with described dielectric resonance post.
As a kind of preferred version, described dielectric resonator is TM mould dielectric resonator, and described cavity and described thin cover plate are conductive material.
Another aspect of the present invention provides a kind of being convenient to manufacture and the dielectric filter of dependable performance, and described filter comprises above-mentioned dielectric resonator.
In dielectric resonator of the present invention, outer cover plate has the pars intermedia and housing that separate, and pars intermedia is connected by elastic connection structure with housing, and this elastic connection structure can produce larger deformation, makes the end face close contact of thin cover plate and dielectric resonance post.This kind of dielectric resonator is effective, and is convenient to manufacture and assembling.
[accompanying drawing explanation]
Fig. 1 is a kind of dielectric resonator schematic diagram of prior art;
Fig. 2 is the TM dielectric resonator structural representation of one embodiment of the invention;
Fig. 3 is the structural representation of the outer cover plate of resonator shown in Fig. 2;
Fig. 4 is the cross sectional representation of resonator shown in Fig. 2;
Fig. 5 is the TM dielectric resonator structural representation of another embodiment of the present invention;
Fig. 6 is the structural representation of the outer cover plate of resonator shown in Fig. 5;
Fig. 7 is the cross sectional representation of resonator shown in Fig. 5.
[embodiment]
The present invention relates to dielectric filter and resonator thereof, this filter and resonator thereof are particularly useful for microwave communication.Below, will the present invention will be described for TM mould dielectric resonator.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope that the present invention comprises.
With reference to figure 2, the TM mould dielectric resonator that the present embodiment provides comprises: the cavity 210 of one end open, outer cover plate 220, thin cover plate 230 and dielectric resonance post 240.Thin cover plate 230 covers described cavity 210 by screw or other modes and forms resonant cavity, and cavity 210 and thin cover plate 230 are all conductive material.Outer cover plate 220 covers on thin cover plate 230 by screw or other modes, and outer cover plate 220 can be conductive material, also can be non-conductive material.Dielectric resonance post 240 is hollow cylindrical, is arranged in described cavity 210, and upper surface and the thin cover plate 230 of dielectric resonance post 240 contact, and the lower surface of dielectric resonance post 240 and the inner bottom surface of cavity 210 contact.The upper and lower end face of dielectric resonance post 240 can be covered by conductive material, also can realize covering by Treatment of Metal Surface.
With reference to figure 3, the elastic connection structure that outer cover plate 220 comprises housing 224, is positioned at the pars intermedia 222 of housing 224, connects housing 224 and pars intermedia 222.Preferably, elastic connection structure is positioned at around the upper surface of dielectric resonance post 240.In the present embodiment, this elastic connection structure comprises the radial muscle 226 that some radial directions extend.The pars intermedia 222 of outer cover plate 220 is connected with housing 224 by muscle 260, forms the groove 228 of hollow out between adjacent muscle 226.Muscle 260 can produce comparatively large deformation, can produce enough elastic force, pushes down thin cover plate 230, makes thin cover plate 230 produce elastic deformation, makes thin cover plate 230 and dielectric resonance post 240 upper surface close contact, makes both contact site electric conductivities good.According to actual needs, quantity and the thickness of muscle 260 can be changed.
With reference to figure 4, reliable and stable in order to what easily assemble and assemble, when the lower surface of dielectric resonance post 240 contacts with the inner bottom surface of cavity 210, stopper slot 212 is set in the bottom surface of cavity 210 for limiting the contact position of the lower surface of dielectric resonance post 240.Dielectric resonance post is placed in the stopper slot 212 li in cavity 210, and this stopper slot 212 can be concentric circle or annulus with dielectric resonance post 240, and diameter is equal to or slightly greater than dielectric resonance post 240 diameter.Donut can reduce contact area, increases pressure, dielectric resonance post 240 lower surface is contacted with cavity bottom surface more tight, improves conductivity, improve passive intermodulation.
Fig. 5 describes the structure chart of the TM mould dielectric resonator that another embodiment of the present invention provides, and shown in this dielectric resonator and Fig. 2, the main distinction of dielectric resonator is the structure of outer cover plate 220.As shown in Figure 6, outer cover plate 220 comprises pars intermedia 222, is positioned at the housing 224 of pars intermedia 222 outer ring, connects the elastic connection structure of pars intermedia 222 and housing 224.Preferably, around the upper surface of elastic connection structure foreign language dielectric resonance post 240.In the present embodiment, elastic connection structure comprises at least one annulus 225 between pars intermedia 222 and housing 224, and some muscle 226 for connecting pars intermedia 222 and annulus 225, is connected the muscle 226 of annulus 225 and housing.Annulus 225, corresponding muscle 226 and pars intermedia 222 or housing 224 form the cannelure 250 of some hollow outs, thus form network structure.The elastic connection structure of the present embodiment can produce comparatively large deformation, produces enough elastic force, pushes down thin cover plate, makes thin cover plate 230 produce elastic deformation and makes thin cover plate 230 and dielectric resonance post 240 upper surface close contact, makes both contact site electric conductivities good.According to actual needs, quantity and the thickness of muscle 260 can be changed.
With reference to figure 7, reliable and stable in order to what easily assemble and assemble, when the lower surface of dielectric resonance post 240 contacts with the inner bottom surface of cavity 210, the contact position that stopper slot 212 limits the lower surface of dielectric resonance post 240 is set in the bottom surface of cavity 210.Dielectric resonance post is placed in the stopper slot 212 li in cavity 210, and this stopper slot can be circular, and dielectric resonance post 230 is concentric, and diameter is equal to or slightly greater than dielectric resonance post 230 diameter.Preferably, this stopper slot is circular, and dielectric resonance post 230 is concentric, and the internal diameter of this donut is equal to or slightly less than the internal diameter of dielectric resonance post 240, and external diameter equals or slightly larger than the external diameter of dielectric resonance post 240.Use the stopper slot of concentric ring-shaped, can contact area be reduced, increase pressure, dielectric resonance post 240 lower surface is contacted with cavity bottom surface more tight, improve conductivity, improve passive intermodulation.
Above-mentioned dielectric resonator can be used for structural medium filter.
For the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a dielectric resonator, comprise cavity (210) and be positioned at the dielectric resonance post (240) of cavity, it is characterized in that, described dielectric resonator also comprises:
Be installed to the thin cover plate (230) of described cavity (210) openend, described thin cover plate (230) contacts with the upper surface of described dielectric resonance post (240);
Be installed to the outer cover plate (220) in described thin cover plate (230) outside, described outer cover plate (220) comprises pars intermedia (222), housing (224) and connects the elastic connection structure of described pars intermedia (222) and housing (224), described elastic connection structure is positioned at around the upper surface of dielectric resonance post (240), makes the upper surface close contact of described thin cover plate (230) and described dielectric resonance post (240) when described elastic connection structure is in elastic deformation state;
Described elastic connection structure comprise at least one annulus (225), for connect described at least one annulus (225) and described pars intermedia (222) muscle, is connected described in the muscle of at least one annulus (225) and described housing (224).
2. dielectric resonator according to claim 1, it is characterized in that, described elastic connection structure comprises some radial muscle (260), the pars intermedia (222) of described muscle (260) connecting lid plate (220) and housing (224).
3. dielectric resonator according to claim 1, is characterized in that, described elastic connection structure is network structure.
4. dielectric resonator according to claim 1, is characterized in that, described annulus is closed annulus.
5. dielectric resonator according to claim 1, is characterized in that, the bottom surface of described cavity (210) is provided with stopper slot (212) for limiting the contact position of the lower surface of described dielectric resonance post (240).
6. dielectric resonator according to claim 5, it is characterized in that, described stopper slot is the concentric circles concentric with described dielectric resonance post (240), and described concentrically ringed diameter equals or slightly larger than the external diameter of described dielectric resonance post (240).
7. dielectric resonator according to claim 5, is characterized in that: described dielectric resonance post (240) is for hollow cylindric; Described stopper slot (212) is the donut concentric with described dielectric resonance post (240).
8. dielectric resonator as claimed in any of claims 1 to 7, is characterized in that, described dielectric resonator is TM mould dielectric resonator, and described cavity (210) and described thin cover plate (230) are conductive material.
9. a dielectric filter, is characterized in that, described dielectric filter comprises some dielectric resonators as claimed in any of claims 1 to 8 in one of claims.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110381847.5A CN102496765B (en) | 2011-11-25 | 2011-11-25 | Dielectric filter and dielectric resonator thereof |
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| CN201110381847.5A CN102496765B (en) | 2011-11-25 | 2011-11-25 | Dielectric filter and dielectric resonator thereof |
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| CN102496765A CN102496765A (en) | 2012-06-13 |
| CN102496765B true CN102496765B (en) | 2015-02-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102760923B (en) * | 2012-08-02 | 2015-04-29 | 深圳市国人射频通信有限公司 | Medium filter |
| CN105308790B (en) * | 2014-05-07 | 2019-04-12 | 华为技术有限公司 | A kind of horizontal magnetic (TM) mould dielectric filter |
| CN104241806B (en) * | 2014-09-16 | 2017-06-16 | 张家港保税区灿勤微波技术有限公司 | A kind of Antenna baseplate of high temperature-proof and five array-element antenna base plates |
| BR112019013302B1 (en) | 2016-12-27 | 2023-12-19 | Huawei Technologies Co., Ltd | RESONATOR AND COMMUNICATIONS DEVICE |
| CN107134628A (en) * | 2017-05-11 | 2017-09-05 | 深圳市国人射频通信有限公司 | A kind of dielectric resonator and its assembly method |
| CN111769346A (en) * | 2020-08-03 | 2020-10-13 | 深圳国人科技股份有限公司 | TM mode dielectric filter |
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| CN201749935U (en) * | 2010-03-17 | 2011-02-16 | 深圳市大富科技股份有限公司 | Medium syntonizer, elastic conductive shielding piece and medium filter |
| CN102136620A (en) * | 2010-09-03 | 2011-07-27 | 华为技术有限公司 | Transverse magnetic mode dielectric resonator, transverse magnetic mode dielectric filter and base station |
| CN102148417A (en) * | 2010-08-18 | 2011-08-10 | 深圳市大富科技股份有限公司 | Dielectric filer, dielectric resonator and cover plate unit, and communication equipment |
| CN202363572U (en) * | 2011-11-25 | 2012-08-01 | 深圳市国人射频通信有限公司 | Dielectric filter and dielectric resonator thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101933193B (en) * | 2008-01-31 | 2013-04-24 | 艾利森电话股份有限公司 | Filter assembly |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201749935U (en) * | 2010-03-17 | 2011-02-16 | 深圳市大富科技股份有限公司 | Medium syntonizer, elastic conductive shielding piece and medium filter |
| CN102148417A (en) * | 2010-08-18 | 2011-08-10 | 深圳市大富科技股份有限公司 | Dielectric filer, dielectric resonator and cover plate unit, and communication equipment |
| CN102136620A (en) * | 2010-09-03 | 2011-07-27 | 华为技术有限公司 | Transverse magnetic mode dielectric resonator, transverse magnetic mode dielectric filter and base station |
| CN202363572U (en) * | 2011-11-25 | 2012-08-01 | 深圳市国人射频通信有限公司 | Dielectric filter and dielectric resonator thereof |
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Address after: 518000 5th floor, building 1, Guoren science and Technology Park, the intersection of Jinxiu middle road and Cuijing Road, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Guoren Technology Co., Ltd Address before: 518000. B building 1F, three national building, science and technology, Shizhong District, Nanshan District hi tech Zone, Guangdong, Shenzhen Patentee before: Shenzhen GrenTech Corporation |