CN104377405A - Method for installing and fixing resonator in filter - Google Patents
Method for installing and fixing resonator in filter Download PDFInfo
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- CN104377405A CN104377405A CN201310350456.6A CN201310350456A CN104377405A CN 104377405 A CN104377405 A CN 104377405A CN 201310350456 A CN201310350456 A CN 201310350456A CN 104377405 A CN104377405 A CN 104377405A
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- resonator
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- filter
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Abstract
The invention discloses a method for installing and fixing a resonator in a filter. The method for installing and fixing the resonator in the filter comprises the following steps that (1), silk screening of solder paste is conducted on the surface, in contact with the resonator, of a cover plate with an appropriate silk screen printing plate; (2), the resonator is sequentially matched with a resonance cavity in the cover plate with an assembly tool; (3), after installation, the resonator, the cover plate and the assembly tool are placed in a high-temperature box with the temperature ranging from 180 DEG C to 220 DEG C together and are kept stable for 6-10 minutes; (4), the cover plate fixedly provided with the resonator is taken out together with the assembly tool, the cover plate and the assembly tool are cooled at the room temperature; (5) after cooling, the assembly tool is detached, and then the cover plate which is soldered and fixedly provided with the resonator is obtained. By the adoption of the method for installing and fixing resonator in the filter, passive intermodulation signals generated by micro slits can be effectively reduced.
Description
Technical field
The present invention relates to the installing and fixing method of resonator in a kind of filter.
Background technology
Along with the develop rapidly of mobile communication, the transmitting power of communication system and accept sensitivity and have further raising, and the signal of a lot of different frequency is likely there is in same transmission channel.Under high power conditions, some have the passive device of linear characteristic originally, as: filter, duplexer, joint, antenna etc., all show nonlinear characteristic, therefore just likely make to produce modulation between the signal of different frequency, Here it is passive intermodulation (Passive intermodulation, PIM).The major reason producing passive intermodulation comprises: the loosening connection caused with the micro discharge and assembly technology of crossing over metal hollow gap between micro-slit.Producing passive intermodulation can cause effectively transmitted signal to distort, and produces noise and clutter, affects signal transmission rate.
Summary of the invention
For the problems referred to above, the object of this invention is to provide the resonator installing and fixing method of passive intermodulation signal when a kind of effective reduction filter uses.
For achieving the above object, the technical solution used in the present invention is as follows: the installing and fixing method of resonator in a kind of filter, and its step comprises:
1) with suitable silk-screen half tone silk-screen tin cream on the contact-making surface of cover plate and resonator;
2) with assembly tooling, resonator is coordinated with the resonant cavity on cover plate successively;
3), after installation, it is stablize 6 ~ 10 minutes in the high-temperature cabinet of 180 ~ 220 DEG C that resonator, cover plate are placed on temperature together with assembly tooling;
4) cover plate and assembly tooling that are fixed with resonator are together taken out, room temperature cools;
5), after cooling, assembly tooling is removed, namely obtains the cover plate being fixed with resonator by tin welding.
As the further optimization of such scheme, the temperature of described step 3) is 190 ~ 210 DEG C.
As the further optimization of such scheme, the temperature of described step 3) is 200 DEG C.
As the further optimization of such scheme, the stabilization time of described step 3) is 7 ~ 9 minutes.
As the further optimization of such scheme, the stabilization time of described step 3) is 8 minutes.
Beneficial effect main manifestations of the present invention is:
Compared to the filter passive intermodulation test value of conventional screw crimp technology, significantly improve with the passive intermodulation test value of the filter of high-temperature soldering of the present invention, show that passive intermodulation signal is able to effective reduction.
Accompanying drawing explanation
Fig. 1 is the resonator schematic diagram of the screw crimping of prior art.
Fig. 2 is the schematic diagram after using the resonator of gained of the present invention to fix.
Wherein 1 is resonator, and 2 is cover plates, and 3 is the micro-slits between resonator and resonant cavity, and 4 is assembly toolings, and 5 is resonant cavitys.
Embodiment
Below in conjunction with accompanying drawing and preferred implementation, the present invention is further described specifically.
As illustrated in fig. 1 and 2, the installing and fixing method of resonator 1 in a kind of filter, its step comprises:
1) with suitable silk-screen half tone silk-screen tin cream on cover plate 2 with the contact-making surface of resonator 3;
2) with assembly tooling 4, resonator is coordinated with the resonant cavity 5 on cover plate 2 successively;
3), after installation, it is stablize 8 minutes in the high-temperature cabinet of 200 DEG C that resonator 1, cover plate 2 are placed on temperature together with assembly tooling 4;
4) cover plate 2 and assembly tooling 4 that are fixed with resonator 1 are together taken out, room temperature cools;
5), after cooling, assembly tooling 4 is removed, namely obtains the cover plate 2 being fixed with resonator 1 by tin welding.
The micro-slit 3 being difficult to avoid producing between resonator and resonant cavity 5 between resonator and resonant cavity 5 adopting traditional screw to crimp to obtain, when after the installing and fixing method adopting resonator in a kind of filter of the present invention, smoothly closed by tin cream between resonant cavity 5 on the resonator 1 obtained and cover plate 2, there is no slit, therefore prevent the generation with the micro discharge of leap metal hollow gap between micro-slit.Experiment shows that with the filter passive intermodulation test value of conventional screw crimp technology be-81dBm; Can bring up to-110dBm with the filter passive intermodulation test value of high-temperature soldering of the present invention, passive intermodulation signal is able to effective reduction, decreases noise and clutter, reduces the impact of passive intermodulation signal on signal transmission rate.
By reference to the accompanying drawings the preferred embodiment for the present invention is explained in detail above, but the invention is not restricted to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Do not depart from the spirit and scope of the present invention and can make other changes many and remodeling.Should be appreciated that and the invention is not restricted to specific execution mode, scope of the present invention is defined by the following claims.
Claims (5)
1. the installing and fixing method of resonator in filter, its characterization step is:
1) with suitable silk-screen half tone silk-screen tin cream on the contact-making surface of cover plate and resonator;
2) with assembly tooling, resonator is coordinated with the resonant cavity on cover plate successively;
3), after installation, it is stablize 6 ~ 10 minutes in the high-temperature cabinet of 180 ~ 220 DEG C that resonator, cover plate are placed on temperature together with assembly tooling;
4) cover plate and assembly tooling that are fixed with resonator are together taken out, room temperature cools;
5), after cooling, assembly tooling is removed, namely obtains the cover plate being fixed with resonator by tin welding.
2. the installing and fixing method of resonator in a kind of filter according to claim 1, it is characterized in that, the temperature of described step 3) is 190 ~ 210 DEG C.
3. the installing and fixing method of resonator in a kind of filter according to claim 1, it is characterized in that, the temperature of described step 3) is 200 DEG C.
4. the installing and fixing method of resonator in a kind of filter according to claim 1, it is characterized in that, the stabilization time of described step 3) is 7 ~ 9 minutes.
5. the installing and fixing method of resonator in a kind of filter according to claim 1, it is characterized in that, the stabilization time of described step 3) is 8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310350456.6A CN104377405A (en) | 2013-08-13 | 2013-08-13 | Method for installing and fixing resonator in filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310350456.6A CN104377405A (en) | 2013-08-13 | 2013-08-13 | Method for installing and fixing resonator in filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104377405A true CN104377405A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310350456.6A Pending CN104377405A (en) | 2013-08-13 | 2013-08-13 | Method for installing and fixing resonator in filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104377405A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119352A (en) * | 1994-08-02 | 1996-03-27 | 松下电器产业株式会社 | Microwave oscilator and making of same |
| EP0827233A2 (en) * | 1996-08-29 | 1998-03-04 | Murata Manufacturing Co., Ltd. | TM mode dielectric resonator and TM mode dielectric filter and duplexer using the resonator |
| CN102164455A (en) * | 2011-01-18 | 2011-08-24 | 武汉正维电子技术有限公司 | Process for assembling radio frequency power amplifier circuit board |
| CN102173849A (en) * | 2011-02-18 | 2011-09-07 | 成都泰格微波技术股份有限公司 | Reliable welding method of microwave medium ceramic and metal |
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
| CN102573323A (en) * | 2011-12-05 | 2012-07-11 | 四川龙瑞微电子有限公司 | Method for reducing grounding resistance and thermal resistance of printed board |
| CN202695685U (en) * | 2012-07-16 | 2013-01-23 | 苏州市大富通信技术有限公司 | Cavity filter and communication radio frequency device |
-
2013
- 2013-08-13 CN CN201310350456.6A patent/CN104377405A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119352A (en) * | 1994-08-02 | 1996-03-27 | 松下电器产业株式会社 | Microwave oscilator and making of same |
| EP0827233A2 (en) * | 1996-08-29 | 1998-03-04 | Murata Manufacturing Co., Ltd. | TM mode dielectric resonator and TM mode dielectric filter and duplexer using the resonator |
| CN102164455A (en) * | 2011-01-18 | 2011-08-24 | 武汉正维电子技术有限公司 | Process for assembling radio frequency power amplifier circuit board |
| CN102173849A (en) * | 2011-02-18 | 2011-09-07 | 成都泰格微波技术股份有限公司 | Reliable welding method of microwave medium ceramic and metal |
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
| CN102573323A (en) * | 2011-12-05 | 2012-07-11 | 四川龙瑞微电子有限公司 | Method for reducing grounding resistance and thermal resistance of printed board |
| CN202695685U (en) * | 2012-07-16 | 2013-01-23 | 苏州市大富通信技术有限公司 | Cavity filter and communication radio frequency device |
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Application publication date: 20150225 |