CN201946725U - TM01 mould dielectric filter with thin cover board - Google Patents
TM01 mould dielectric filter with thin cover board Download PDFInfo
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- CN201946725U CN201946725U CN2010206821004U CN201020682100U CN201946725U CN 201946725 U CN201946725 U CN 201946725U CN 2010206821004 U CN2010206821004 U CN 2010206821004U CN 201020682100 U CN201020682100 U CN 201020682100U CN 201946725 U CN201946725 U CN 201946725U
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- cover plate
- mould
- cover board
- thin
- cavity
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Abstract
The utility model discloses a TM01 mould dielectric filter with a thin cover board. The TM01 mould dielectric filter comprises a cavity, a cover board, a TM01 mould dielectric, a tuning screw rod and the thin cover board; a bending part which can be deformed is arranged on the thin cover board; the TM01 mould dielectric is placed in the cavity; the thin cover board is arranged between the cover board and the TM01 mould dielectric and is in contact with the cover board and the TM01 mould dielectric; the thin cover board and the cover board are fixed on the cavity by fastening screws; and the tuning screw rod passes through the cover board and the thin cover board into the inner cavity of the TM01 mould dielectric. By adopting of the TM01 mould dielectric filter, the mechanical stress and the machining tolerance caused by temperature variation can be fully absorbed, and the passive intermodulation performance can be improved effectively; therefore, the production throughout yield can be increased.
Description
Technical field
The utility model relates to a kind of TM01 mould dielectric filter, in particular a kind of TM01 mould dielectric filter that thin cover plate is set.
Background technology
In the mobile communication system, filter is a significant element, and conventional filter is based on the wire chamber Design of Filter, and crowded day by day along with communications band requires more and more highlyer to performance of filter, adopt the conventional metals cavity filter to realize under a lot of situations.It is high that TM01 mould medium has the Q value, and temperature coefficient is good, and good characteristics such as low price will play more and more important effect in following Design of Filter.
In the TM01 mould dielectric filter design, the medium fixture is an important component part, this device design rationally whether, directly have influence on electrical property and the passive intermodulation and the reliability of filter.
Fig. 1 is the cavity of general TM01 mould dielectric filter, and as shown in the figure, TM01 mould medium 3 is fixed on the centre of cavity 2, and TM01 mould medium 3 closely is connected with the inwall of cavity 2, cover plate 1.
Generally, because the existence of mismachining tolerance causes TM01 mould medium 3 and cavity 2 incomplete same on height dimension, as shown in Figures 2 and 3.If the height of TM01 mould medium 3 just can not closely connect between TM01 mould medium 3 and the cover plate 1 less than the height of cavity 2; Otherwise if the height of TM01 mould medium 3 is greater than the height of cavity 2, cover plate 1 is with after cavity 2 closely is connected by screw, and cover plate is just crushed TM01 mould medium 3 probably.Simultaneously, because TM01 mould medium 3 has different thermal coefficient of expansions with the cavity 2 and the cover plate 1 of metal, TM01 mould medium 3 mechanical stress occurs with the cavity 2 and the cover plate 1 contact site branch of metal, thereby causes loose contact and resonance frequency drift.
Be existing a kind of intrinsic scheme as shown in Figure 4, in order effectively to absorb TM01 mould medium 3 and cavity 2 tolerance in height, TM01 mould medium 3 upper and lower surfaces will be carried out silver-plated processing, upper surface at TM01 mould medium 3 welds a shell fragment 4 simultaneously, lower surface with TM01 mould medium 3 is welded on the cavity 2 again, last cover plate 1 is pressed on the shell fragment 4, and shell fragment 4 is by the elastomeric absorbent structure tolerance.
There is following shortcoming in existing scheme:
1) because cavity belongs to metallic conductor, and volume is big, rapid heat dissipation, between medium and the cavity to be welded on the technology difficulty bigger, and welding quality is difficult to control, welds the bad serious passive intermodulation problem that then exists;
2) medium is in the same place with other metal solder, because the temperature coefficient of dilatation of medium is different with metal, when dielectric filter cavity environment variations in temperature is big, because medium is different with the size telescopic level of cavity (or cover plate), cause medium to ftracture at weld probably, performance worsens;
3) if medium or shell fragment have problem, take off difficulty from cavity, it is big to reprocess difficulty;
4) thus medium easily is offset the performance that influences filter because of unexpected concussion occurrence positions in cavity.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The purpose of this utility model is to provide a kind of TM01 mould dielectric filter that thin cover plate is set, be intended to solve when TM01 mould dielectric filter cavity environment variations in temperature is big, because TM01 mould medium is different with the size telescopic level of cavity (or cover plate), cause TM01 mould medium to ftracture probably, thereby problem and TM01 mould medium that performance takes place to worsen influence the problems such as performance of filter because of concussion occurrence positions skew unexpectedly easily in cavity at weld.
The technical solution of the utility model is as follows: a kind of TM01 mould dielectric filter that thin cover plate is set, wherein, comprise cavity, cover plate, TM01 mould medium, tuning screw rod and thin cover plate, described thin cover plate is provided with one can produce the bend of deformation, described TM01 mould medium is placed in the cavity, described thin cover plate is arranged between cover plate and the TM01 mould medium, and contact with TM01 mould medium with cover plate, and together be fixed on the cavity by clamp-screw with cover plate, described tuning screw rod passes described cover plate and thin cover plate is deep in the inner chamber of described TM01 mould medium.
The described TM01 mould dielectric filter that thin cover plate is set, wherein, the middle position of the bottom interior surface of described cavity is provided with a positive stop lug boss, and the internal diameter of the size of described positive stop lug boss and TM01 mould medium is adaptive, and described TM01 mould medium is placed on the described positive stop lug boss.
The described TM01 mould dielectric filter that thin cover plate is set, wherein, described cover plate is provided with one can absorb the annular groove that approaches cover plate deformation.
The described TM01 mould dielectric filter that thin cover plate is set, wherein, described thin cover plate is thin metal cover board, and electroplate.
The described TM01 mould dielectric filter that thin cover plate is set, wherein, described tuning screw rod is fixing on the cover board by screw.
The described TM01 mould dielectric filter that thin cover plate is set wherein, is provided with a pad between described screw and the cover plate.
The beneficial effects of the utility model: the utility model is by being provided with a thin cover plate between large cover and medium, and be fixed on the cavity wall with large cover by screw, reach with this and can fully absorb because the variations in temperature mechanical stress and the machining tolerance that cause and effectively improve the passive intermodulation performance promote the production first-pass yield.The TM01 mould dielectric filter that thin cover plate is set that the utility model provides in addition is easy to loading and unloading when TM01 mould medium quality is bad, and rework process is simple.
Description of drawings
Fig. 1 is existing filter generalized section.
Fig. 2 and Fig. 3 are because the underproof filter generalized section that mismachining tolerance causes.
Fig. 4 is existing a kind of improved filter generalized section.
Fig. 5 is the intention of analysing and observe of the filter that provides of the utility model.
Fig. 6 is the Filter Structures explosive view that the utility model provides.
Fig. 7 is the thin cover plate schematic diagram that the utility model provides.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, below the utility model is further described with reference to the accompanying drawing embodiment that develops simultaneously.
See also Fig. 5 and Fig. 6, filter of the present utility model comprises cavity 2, cover plate 1, TM01 mould medium 3 and thin cover plate 11, the cross section of cavity described in the present embodiment 2, cover plate 1 and thin cover plate 11 is circle, described in the present embodiment thin cover plate 11 is a thin metal cover board, has silver-plated on the described thin metal cover board.The middle position of described cover plate 1 is provided with a Luo hole, and described Luo hole is used for adaptive tuning screw rod 12, and described tuning screw rod 12 is fixed on the cover plate 1 by screw 13, and described tuning screw rod passes described cover plate and thin cover plate is deep in the inner chamber of described TM01 mould medium.For the fixing described tuning screw rod 12 that guarantees that described screw 13 can be stable, present embodiment is provided with a pad 14 between screw 13 and cover plate 1.The middle position of the bottom interior surface of described cavity 2 is provided with a positive stop lug boss 20, and the internal diameter of the size of described positive stop lug boss 20 and TM01 mould medium 3 is adaptive.The effect of described positive stop lug boss is that TM01 mould medium 3 can be positioned in the cavity, guarantees the performance of filter.
The upper and lower end face of the TM01 mould medium 3 that present embodiment provides is provided with silver-plated, the size of described thin cover plate 11 is big or small identical with described cover plate 1, described thin cover plate 11 is arranged between TM01 mould medium 3 and the described cover plate 1, and together is fixed on the cavity 2 by clamp-screw 10 with described cover plate 1.
Referring to Fig. 7, the middle position of described thin cover plate 11 is provided with through hole 17, and the size of described through hole 17 and the diameter of described tuning screw rod are adaptive.Be provided with a circle around through hole 17 and can produce the bend 15 of deformation on described thin cover plate 11, the effect of described bend 15 has two, and the one, absorb TM01 mould medium 3 and cavity 2 structural tolerances; The 2nd, absorb the mechanical stress that TM01 mould medium 3 produces because of variations in temperature.In order to make thin cover plate 11 can better absorb machining tolerance and mechanical stress, be provided with an annular groove 16 at described cover plate 1 inner surface around central Luo hole, described annular groove 16 can absorb the deformation that thin cover plate 11 produces.
Use the utility model can fully absorb mechanical stress and the machining tolerance that causes owing to variations in temperature and effectively improve the passive intermodulation performance, promotes to produce first-pass yield.The TM01 mould dielectric filter that thin cover plate is set that the utility model provides in addition is easy to loading and unloading when TM01 mould medium quality is bad, and rework process is simple.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (6)
1. one kind is provided with the TM01 mould dielectric filter that approaches cover plate, it is characterized in that, comprise cavity, cover plate, TM01 mould medium, tuning screw rod and thin cover plate, described thin cover plate is provided with one can produce the bend of deformation, described TM01 mould medium is placed in the cavity, described thin cover plate is arranged between cover plate and the TM01 mould medium, and contact with TM01 mould medium with cover plate, and together be fixed on the cavity by clamp-screw with cover plate, described tuning screw rod passes described cover plate and thin cover plate is deep in the inner chamber of described TM01 mould medium.
2. the TM01 mould dielectric filter that thin cover plate is set according to claim 1, it is characterized in that, the middle position of the bottom interior surface of described cavity is provided with a positive stop lug boss, the internal diameter of the size of described positive stop lug boss and TM01 mould medium is adaptive, and described TM01 mould medium is placed on the described positive stop lug boss.
3. the TM01 mould dielectric filter that thin cover plate is set according to claim 1 is characterized in that, described cover plate is provided with one can absorb the annular groove that approaches cover plate deformation.
4. the TM01 mould dielectric filter that thin cover plate is set according to claim 1 is characterized in that, described thin cover plate is thin metal cover board, and electroplate.
5. the TM01 mould dielectric filter that thin cover plate is set according to claim 1 is characterized in that, described tuning screw rod is fixing on the cover board by screw.
6. the TM01 mould dielectric filter that thin cover plate is set according to claim 5 is characterized in that, is provided with a pad between described screw and the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206821004U CN201946725U (en) | 2010-12-27 | 2010-12-27 | TM01 mould dielectric filter with thin cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206821004U CN201946725U (en) | 2010-12-27 | 2010-12-27 | TM01 mould dielectric filter with thin cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946725U true CN201946725U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206821004U Expired - Fee Related CN201946725U (en) | 2010-12-27 | 2010-12-27 | TM01 mould dielectric filter with thin cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946725U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956543A (en) * | 2014-05-21 | 2014-07-30 | 西安空间无线电技术研究所 | Dielectric filter with low-pressure high-power threshold value |
| CN106450645A (en) * | 2016-08-03 | 2017-02-22 | 武汉凡谷电子技术股份有限公司 | TM die dielectric resonator and dielectric filter |
| US10333188B2 (en) | 2014-05-07 | 2019-06-25 | Huawei Technologies Co., Ltd. | Transverse magnetic (TM) mode dielectric filter |
-
2010
- 2010-12-27 CN CN2010206821004U patent/CN201946725U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10333188B2 (en) | 2014-05-07 | 2019-06-25 | Huawei Technologies Co., Ltd. | Transverse magnetic (TM) mode dielectric filter |
| CN103956543A (en) * | 2014-05-21 | 2014-07-30 | 西安空间无线电技术研究所 | Dielectric filter with low-pressure high-power threshold value |
| CN106450645A (en) * | 2016-08-03 | 2017-02-22 | 武汉凡谷电子技术股份有限公司 | TM die dielectric resonator and dielectric filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Weitong Technology Co., Ltd. Assignor: Shenzhen City Weifu Communication Technology Co., Ltd. Contract record no.: 2014440020428 Denomination of utility model: TM01 mould dielectric filter with thin cover board Granted publication date: 20110824 License type: Exclusive License Record date: 20141217 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |