CN201749933U - Dielectric resonator and dielectric filter - Google Patents
Dielectric resonator and dielectric filter Download PDFInfo
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- CN201749933U CN201749933U CN2010201388859U CN201020138885U CN201749933U CN 201749933 U CN201749933 U CN 201749933U CN 2010201388859 U CN2010201388859 U CN 2010201388859U CN 201020138885 U CN201020138885 U CN 201020138885U CN 201749933 U CN201749933 U CN 201749933U
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- resonance post
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Abstract
The utility model discloses a dielectric resonator and a dielectric filter. The dielectric resonator and the dielectric filter which are provided by the embodiment of the utility model realize detachable connection between a dielectric resonator column and a cavity by a metal base, and sharp teeth are arranged at the periphery of the metal base; and when the metal base is locked on the cavity by screw nails, the close contact between the metal base and the cavity can be guaranteed, and the requirement of radio frequency can be met.
Description
Technical field
The utility model relates to the dielectric filter technical field, is specifically related to dielectric resonator and dielectric filter.
Background technology
Dielectric filter be the low-loss, high-k, frequency-temperature coefficient and the thermal coefficient of expansion that utilize medium ceramic material little, be characterized in inserting good, the narrow bandwidth of little, the anti-power of loss.
Referring to Fig. 1, this figure is that horizontal magnetic (transverse magnetic, mainly be made up of dielectric resonance post and metallic cavity by the TM) schematic diagram of mould dielectric filter.According to electromagnetic principle, resonator is when operate as normal, and there is CURRENT DISTRIBUTION dielectric resonance post 101 upper and lower end faces and metallic cavity 102 junctions.If it is bad that the upper and lower end face of dielectric resonance post 101 contacts with metallic cavity 102, can cause leakage of current on the one hand, increased the contact resistance of dielectric resonance post 101 upper and lower end faces and metallic cavity 102 on the other hand, increased loss.Therefore, the medium of resonator contacts well very importantly in the TM mould dielectric filter with metallic cavity 102 upper and lower surfaces, otherwise can cause current loss to increase, thereby influence the performance of filter.
In order to make dielectric resonance post lower surface and metallic cavity excellent contact, the mode that prior art is taked is that dielectric resonance post lower surface and metallic cavity are welded, and upper surface is by the elastic deformation realization electrical connection of elastic electric conductor.
In research and practice process to prior art, inventor of the present utility model finds, in the prior art, the lower surface of dielectric resonance post is welded direct on the metallic cavity, though can solve the problem that conducts, but but not easy to operate, because the restriction of the internal structure of cavity, welding is difficulty relatively, simultaneously after the welding, in case the dielectric resonance post goes wrong, because the mortgage of dielectric resonance post on cavity, can't be keeped in repair and debug by changing the dielectric resonance post.
Summary of the invention
Dielectric resonator that the utility model provides and dielectric filter can be changed the dielectric resonance post easily, have improved the maintainability of dielectric filter.
A kind of dielectric resonator that the utility model embodiment provides, comprise dielectric resonance post, cavity, cover plate, described dielectric resonance post is arranged in the described cavity, also comprise: the metab of dielectric resonance post, the bottom surface of described dielectric resonance post is welded in first end of described metab, on described cavity bottom surface, second end of described metab and the contact-making surface periphery of cavity are useful on the pointed tooth of the contact area that reduces metab and cavity bottom surface to described metab by screw.
Preferably, described metab second end is cylindrical shape, described pointed tooth ringwise, the periphery of the contact-making surface of described second end and cavity bottom surface is provided with described annular pointed tooth.
Preferably, described pointed tooth cross section is triangle or circular arc or trapezoidal or rectangle.
Preferably, described dielectric resonance post is the cylinder bodily form, and first end on the described metab is provided with the circle location concave station that is used to locate described dielectric resonance post, and the diameter of described location concave station is a bit larger tham the diameter of described dielectric resonance post.
Preferably, described dielectric resonance post is the cylinder bodily form, and there is through hole vertically at described dielectric resonance post middle part, and first end is provided with reference column on the described metab, and described reference column inserts described through hole, and the dielectric resonance post is positioned.
Preferably, metalized is adopted in described dielectric resonance post bottom surface, metal level after the described metallization and the welding of described metab first end.
A kind of dielectric filter that the utility model provides comprises one or more above-mentioned dielectric resonators, and is arranged at the coupling window that is used to carry out the signal coupling between described each dielectric resonator.
Dielectric resonator that the utility model embodiment provides and dielectric filter, realized detachable connection between dielectric resonance post and the cavity by metab, and the metab periphery has pointed tooth, when being locked at metab on the cavity with screw, can guarantee that metab closely contacts with cavity, satisfies radio frequency requirement.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, 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 is the schematic diagram of existing transverse magnetic mode dielectric filter;
Fig. 2 is the cross-sectional view of the utility model embodiment dielectric resonator;
Fig. 3 is the partial structurtes schematic diagram of the utility model embodiment dielectric resonator;
Fig. 4 is the upward view of the utility model embodiment dielectric resonance post base;
Fig. 5 is the three-dimensional cutaway view of the utility model embodiment medium resonator;
Fig. 6 is a kind of location structure schematic diagram of the utility model medium resonance post metab;
Fig. 7 is the another kind of location structure schematic diagram of the utility model medium resonance post metab.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one, a kind of dielectric resonator, cross-sectional view comprises as shown in Figure 2:
Consult shown in Figure 3ly in the lump, be the local amplification profile schematic diagram of pointed tooth in the present embodiment.Described pointed tooth makes the contact area of metab and cavity bottom surface reduce, and helps reliable contact.Only showing the cross section among Fig. 3 is leg-of-mutton pointed tooth.Be appreciated that described pointed tooth 250 cross sections all right or circular arc or trapezoidal or rectangle etc.
Further consult Fig. 4, Fig. 5, Fig. 4 is the upward view of present embodiment dielectric resonance post base, Fig. 5 is the three-dimensional cutaway view of the utility model embodiment medium resonator, described dielectric resonance post 210 is a cylindrical shape, described metab 230 second ends 232 also are cylindrical shape, Fig. 4 is the upward view of metab, described pointed tooth 250 ringwise, described second end 232 is provided with described annular pointed tooth 250 with the periphery of the contact-making surface of cavity bottom surface.
For the ease of installing, provide the location between dual mode realization dielectric resonance post and the metab in the present embodiment.
Mode one, as shown in Figure 6, in the present embodiment, first end on the described metab can be provided with the circle location concave station 233 that is used to locate described dielectric resonance post, and described dielectric resonance post is a cylindrical shape, and the diameter of described location concave station 233 is a bit larger tham the diameter of dielectric resonance post.
Mode two, as shown in Figure 7, described dielectric resonance post is a cylindrical shape, and there is through hole vertically at described dielectric resonance post middle part, and first end is provided with reference column 234 on the described metab, described reference column 234 inserts the through hole of dielectric resonance post central authorities, and the dielectric resonance post is positioned.
In the utility model, can adopt metalized to described dielectric resonance post 210 bottom surfaces, metal level after the metallization and described metab first end weld together, and can improve conductivity.
Embodiment two, a kind of dielectric filter comprise the dielectric resonator described in one or more embodiment one, and are arranged at the coupling window that is used to carry out the signal coupling between described each dielectric resonator.
More than dielectric resonator and dielectric filter that the utility model embodiment is provided be described in detail, wherein:
Dielectric resonator that the utility model embodiment provides and dielectric filter, realized detachable connection between dielectric resonance post and the cavity by metab, and the metab periphery has pointed tooth, when being locked at metab on the cavity with screw, can guarantee that metab closely contacts with cavity, satisfies radio frequency requirement.
Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. dielectric resonator, comprise dielectric resonance post, cavity, cover plate, described dielectric resonance post is arranged in the described cavity, it is characterized in that, also comprise: the metab of dielectric resonance post, the bottom surface of described dielectric resonance post is welded in first end of described metab, and on described cavity bottom surface, second end of described metab and the contact-making surface periphery of cavity are useful on the pointed tooth of the contact area that reduces metab and cavity bottom surface to described metab by screw.
2. dielectric resonator as claimed in claim 1 is characterized in that, described metab second end is cylindrical shape, described pointed tooth ringwise, the periphery of the contact-making surface of described second end and cavity bottom surface is provided with described annular pointed tooth.
3. dielectric resonator as claimed in claim 1 is characterized in that, described pointed tooth cross section is triangle or circular arc or trapezoidal or rectangle.
4. dielectric resonator as claimed in claim 1, it is characterized in that, described dielectric resonance post is the cylinder bodily form, and first end on the described metab is provided with the circle location concave station that is used to locate described dielectric resonance post, and the diameter of described location concave station is a bit larger tham the diameter of described dielectric resonance post.
5. dielectric resonator as claimed in claim 1 is characterized in that, described dielectric resonance post is the cylinder bodily form, there is through hole vertically at described dielectric resonance post middle part, first end is provided with reference column on the described metab, and described reference column inserts described through hole, and the dielectric resonance post is positioned.
6. as any described dielectric resonator of claim 1 to 5, it is characterized in that metalized is adopted in described dielectric resonance post bottom surface, metal level after the described metallization and the welding of described metab first end.
7. a dielectric filter is characterized in that, comprises any described dielectric resonator of one or more claims 1 to 6, and is arranged at the coupling window that is used to carry out the signal coupling between described each dielectric resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201388859U CN201749933U (en) | 2010-03-17 | 2010-03-17 | Dielectric resonator and dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201388859U CN201749933U (en) | 2010-03-17 | 2010-03-17 | Dielectric resonator and dielectric filter |
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| CN201749933U true CN201749933U (en) | 2011-02-16 |
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| CN2010201388859U Expired - Fee Related CN201749933U (en) | 2010-03-17 | 2010-03-17 | Dielectric resonator and dielectric filter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931464A (en) * | 2012-11-21 | 2013-02-13 | 江苏贝孚德通讯科技股份有限公司 | Single-ended short circuit dielectric resonator |
| CN102938490A (en) * | 2012-11-21 | 2013-02-20 | 江苏贝孚德通讯科技股份有限公司 | Medium TM mode single-ended short circuit resonator |
| CN103050760A (en) * | 2012-12-10 | 2013-04-17 | 中兴通讯股份有限公司 | Dielectric resonator and assembly method thereof and dielectric filter |
| CN103531869A (en) * | 2012-07-03 | 2014-01-22 | 罗森伯格（上海）通信技术有限公司 | TM mold dielectric filter |
| CN103682537A (en) * | 2012-08-31 | 2014-03-26 | 罗森伯格（上海）通信技术有限公司 | TM (Transverse Magnetic) mode dielectric filter |
| WO2014090031A1 (en) * | 2012-12-14 | 2014-06-19 | 中兴通讯股份有限公司 | Tm medium resonator, method of implementing same, and tm medium filter |
| WO2017088195A1 (en) * | 2015-11-28 | 2017-06-01 | 华为技术有限公司 | Dielectric resonator and filter |
-
2010
- 2010-03-17 CN CN2010201388859U patent/CN201749933U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531869A (en) * | 2012-07-03 | 2014-01-22 | 罗森伯格（上海）通信技术有限公司 | TM mold dielectric filter |
| CN103531869B (en) * | 2012-07-03 | 2017-11-24 | 罗森伯格（上海）通信技术有限公司 | A kind of TM moulds dielectric filter |
| CN103682537A (en) * | 2012-08-31 | 2014-03-26 | 罗森伯格（上海）通信技术有限公司 | TM (Transverse Magnetic) mode dielectric filter |
| CN103682537B (en) * | 2012-08-31 | 2018-08-14 | 罗森伯格（上海）通信技术有限公司 | TM mould dielectric filters |
| CN102938490A (en) * | 2012-11-21 | 2013-02-20 | 江苏贝孚德通讯科技股份有限公司 | Medium TM mode single-ended short circuit resonator |
| CN102931464A (en) * | 2012-11-21 | 2013-02-13 | 江苏贝孚德通讯科技股份有限公司 | Single-ended short circuit dielectric resonator |
| US9941564B2 (en) | 2012-12-10 | 2018-04-10 | Zte Corporation | Dielectric resonator, assembly method therefor, and dielectric filter |
| CN103050760A (en) * | 2012-12-10 | 2013-04-17 | 中兴通讯股份有限公司 | Dielectric resonator and assembly method thereof and dielectric filter |
| WO2014090004A1 (en) * | 2012-12-10 | 2014-06-19 | 中兴通讯股份有限公司 | Dielectric resonator, assembly method therefor, and dielectric filter |
| WO2014090031A1 (en) * | 2012-12-14 | 2014-06-19 | 中兴通讯股份有限公司 | Tm medium resonator, method of implementing same, and tm medium filter |
| US9935348B2 (en) | 2012-12-14 | 2018-04-03 | Zte Corporation | TM dielectric resonator, method for implementing TM dielectric resonator and TM dielectric filter |
| WO2017088195A1 (en) * | 2015-11-28 | 2017-06-01 | 华为技术有限公司 | Dielectric resonator and filter |
| US10847855B2 (en) | 2015-11-28 | 2020-11-24 | Huawei Technologies Co., Ltd. | Dielectric resonator and filter comprising a body with a resonant hole surrounded by an encirclement wall having a ring shaped exposed dielectric area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20160317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |