CN102544657A - High-frequency band and high-power plastic cavity filter - Google Patents
High-frequency band and high-power plastic cavity filter Download PDFInfo
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- CN102544657A CN102544657A CN2012100268209A CN201210026820A CN102544657A CN 102544657 A CN102544657 A CN 102544657A CN 2012100268209 A CN2012100268209 A CN 2012100268209A CN 201210026820 A CN201210026820 A CN 201210026820A CN 102544657 A CN102544657 A CN 102544657A
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Abstract
The invention relates to a high-frequency band and high-power plastic cavity filter which comprises a cavity and a cover plate arranged on the cavity. A resonant pole is installed in the cavity; a tuning screw rod is installed on the cover plate; the cavity is made of plastics; a metal heat-radiating plate is arranged on the outer surface of the bottom part of the cavity; the bottom end of the resonant pole is connected with the metal heat-radiating plate and is also connected with a metal heat-conducting piece; the metal heat-conducting piece penetrates through the bottom surface of the cavity to be connected with the heat-radiating plate; the resonant pole, the metal heat-conducting piece and the metal heat-radiating plate are integrally formed; a boss is arranged at the connection of the resonant pole and the metal heat-conducting piece, and the lower surface of the boss is jointed with the inner surface of the bottom part of the cavity; and the upper surface of the metal heat-radiating plate is jointed with the outer surface of the bottom part of the cavity. The high-frequency band and high-power plastic cavity filter has the beneficial effects that most of heat inside the plastic cavity is conducted and radiated to a peripheral space outside the plastic cavity to effectively reduce the heat accumulated inside the plastic cavity; and the good electrical performance can be better kept to greatly reduce the production cost of the filter.
Description
Technical field
The invention belongs to the communications industry with electric Element Technology field, be specifically related to a kind of high band high power plastic cavity body filter.
Background technology
Usually adopt the interference signal or the noise signal filtering of cavity body filter in the communication system with particular frequency range; Existing cavity body filter generally adopts precious metals such as aluminium, copper to make, not only weight big, be unfavorable for installing, dismounting and transportation, and because the price of precious metal is higher; Cause the cost of cavity body filter higher; Therefore, each tame filter manufacturer all constantly opens up new technology and new technology dropping into great effort, to alleviate the enterprise production cost.Fall in this programme various; The scheme that adopts plastic material to make filter cavity is a kind of relatively reasonable plan; The relative metal filter cavity of this scheme; Because plastic chamber has lighter weight, stronger rigid nature, be not vulnerable to the influence that ambient temperature changes, and more and more receive the attention of each tame filter manufacturer.
Yet the heat-conductive characteristic of plastics is than metal difference, and in the use of plastic chamber filter, accumulating in the inner heat of plastic chamber can not in time distribute, and can cause local temperature increasingly high and make the disabler of plastic chamber overall filter; Especially for high power filter; More heat transfer can be gathered at short notice in plastic chamber inside, and can not in time distribute, and causes the electricity function index of cavity body filter to descend; Can not satisfy the demand of work; In the existing high band high power plastic cavity body filter, can only in the filter of small frequency very, use plastic chamber, powerful slightly filter; The scheme that at all can't adopt plastic chamber is to reduce the pressure of enterprise production cost, and the heat dissipation problem of plastic chamber is seriously restricting the development process of high power plastic cavity body filter all the time.
Summary of the invention
The purpose of this invention is to provide a kind of can fine solution plastic filter heat dissipation problem, reduce the production cost of filter and high band high power plastic cavity body filter with good electric property.
For realizing above-mentioned purpose, a kind of high band high power plastic cavity body filter of the present invention's design comprises cavity and is arranged on the cover plate on the cavity; In the said cavity resonant rod is installed, tuning screw rod is installed on the said cover plate, said cavity is a plastic material; The bottom outer surface of said cavity is provided with metallic heat radiating plate; The bottom of said resonant rod is connected with metallic heat radiating plate, and the bottom of said resonant rod is connected with metal heat-conducting spare, and the bottom surface that said metal heat-conducting spare passes cavity is connected with metallic heat radiating plate; Said resonant rod, metal heat-conducting spare and metallic heat radiating plate are one-body molded; The junction of said resonant rod and metal heat-conducting spare is provided with boss, and the lower surface of said boss and the bottom interior surface of cavity are fitted, and the bottom outer surface of metallic heat radiating plate upper surface and cavity is fitted.
Further, the bottom surface of said cavity and metallic heat radiating plate integrated injection molding;
Further, said metallic heat radiating plate is a circular metal plate;
Again further, the diameter of metallic heat radiating plate is greater than the diameter of metal heat-conducting spare.
The present inventor finds following rule through concentrating on studies for a long time, and in the filter course of work, the main origin of heat of inside cavity is in resonant rod; Based on this rule, the present invention is connected the bottom of resonant rod with metal heat-conducting spare, and metal heat-conducting spare is connected with the metallic heat radiating plate that is positioned at chamber outer surface; Utilize the high characteristic of metal heat-conducting rate; Most of heat that plastic chamber is inner conducts and is dispersed into the space of plastic chamber exterior circumferential, effectively reduces the heat of plastic chamber accumulated inside, and in high power filter, adopts plastic chamber; Can keep electric property well; Through the on-the-spot test experiment, be in the high band filter more than the 120W in average power, the inner heat of plastic chamber can in time be radiated the outside space of cavity and reduce the plastic chamber temperature inside; The electric property of getting ready; Structure, the connected mode of metal heat-conducting spare of the present invention and metallic heat radiating plate and resonant rod can reduce the production cost of filter greatly simultaneously, and are easy to assembling, manufacturing.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of resonant rod of the present invention, metal heat-conducting spare and metallic heat radiating plate;
Among the figure: 1-cavity, 2-cover plate, 3-resonant rod, the tuning screw rod of 4-, 5-metallic heat radiating plate, 6-metal heat-conducting spare, 7-boss, 8-resonant cavity.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is made further detailed description:
Overall plan of the present invention is; Bottom outer surface at plastics is provided with metallic heat radiating plate, the bottom of resonant rod is connected with metallic heat radiating plate, through the bigger metallic heat radiating plate of area; The heat that plastic chamber is inner is dispersed into the cavity outside, reduces the temperature inside of plastic chamber.Present embodiment is that example is explained technical scheme of the present invention with single cavity filter, and certainly, the present invention is equally applicable to multicavity filter.
High band high power plastic cavity body filter as shown in Figure 1 comprises cavity 1 and is arranged on the cover plate 2 on the cavity 1 that cover plate 2 is through being bolted on the cavity 1; Be provided with resonant cavity 8 in the cavity 1, resonant rod 3 is installed in the resonant cavity 8, tuning screw rod 4 is installed on the cover plate 2; The lower end of tuning screw rod 4 is hollow over against resonant rod 3; So that regulate the operating frequency of filter, cavity 1 is a plastic material, and cavity cover plate 2, resonant rod 3, tuning screw rod 4 all adopt metal material to make.
The end of resonant rod 3 is connected with metallic heat radiating plate 5 through metal heat-conducting spare 6; Resonant rod 3, metal heat-conducting spare 6 and metallic heat radiating plate 5 are one-body molded; The bottom surface of cavity 1 and metallic heat radiating plate 5 integrated injection molding metal heat-conducting spares 6 are injection-moulded in the bottom surface of cavity 1; And through the bottom surface of cavity 1, metallic heat radiating plate 4 integral molded plastics are on the bottom surface of cavity 1.Resonant rod 3 is provided with boss 7 with the junction of metal heat-conducting spare 6, and the bottom interior surface of the lower surface of boss 7 and cavity 1 is fitted.Metallic heat radiating plate 5 is a circular metal plate, and the diameter of metallic heat radiating plate 5 is greater than the diameter of metal heat-conducting spare 6, and the bottom outer surface of the upper surface of metallic heat radiating plate 5 and cavity 1 is fitted.
High band high power plastic cavity body filter of the present invention integral molded plastic moulding and water-tight is suitable for outdoor application, and is applicable to that service band is the high power plastic cavity body filter of 900M-3.5G.
Metallic heat radiating plate 5 of the present invention can use heat conductivility aluminium material preferably with metal heat-conducting spare 6.
The content of not doing in this specification to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (4)
1. high band high power plastic cavity body filter; Comprise cavity (1) and be arranged on the cover plate (2) on the cavity (1); Resonant rod (3) is installed in the said cavity (1), tuning screw rod (4) is installed on the said cover plate (2), it is characterized in that: said cavity (1) is a plastic material; The bottom outer surface of said cavity (1) is provided with metallic heat radiating plate (5); The bottom of said resonant rod (3) is connected with metallic heat radiating plate (5), and the bottom of said resonant rod (3) is connected with metal heat-conducting spare (6), and the bottom surface that said metal heat-conducting spare (6) passes cavity (1) is connected with metallic heat radiating plate (5); Said resonant rod (3), metal heat-conducting spare (6) and metallic heat radiating plate (5) are one-body molded; Said resonant rod (3) is provided with boss (7) with the junction of metal heat-conducting spare (6), and the bottom interior surface of the lower surface of said boss (7) and cavity (1) is fitted, and the bottom outer surface of metallic heat radiating plate (5) upper surface and cavity (1) is fitted.
2. high band high power plastic cavity body filter according to claim 1 is characterized in that: the bottom surface of said cavity (1) and metallic heat radiating plate (5) integrated injection molding.
3. high band high power plastic cavity body filter according to claim 1 and 2 is characterized in that: said metallic heat radiating plate (5) is a circular metal plate.
4. high band high power plastic cavity body filter according to claim 3 is characterized in that: the diameter of said metallic heat radiating plate (5) is greater than the diameter of metal heat-conducting spare (6).
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100268209A CN102544657A (en) | 2012-02-08 | 2012-02-08 | High-frequency band and high-power plastic cavity filter |
| PCT/CN2012/078474 WO2013117072A1 (en) | 2012-02-08 | 2012-07-11 | Mid-frequency band high-power cavity filter |
| PCT/CN2012/078501 WO2013117074A1 (en) | 2012-02-08 | 2012-07-11 | High-frequency band high-power plastic cavity filter |
| PCT/CN2012/078492 WO2013117073A1 (en) | 2012-02-08 | 2012-07-11 | Cavity filter |
| PCT/CN2012/078527 WO2013117075A1 (en) | 2012-02-08 | 2012-07-12 | Indoor-use multi-cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100268209A CN102544657A (en) | 2012-02-08 | 2012-02-08 | High-frequency band and high-power plastic cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102544657A true CN102544657A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100268209A Pending CN102544657A (en) | 2012-02-08 | 2012-02-08 | High-frequency band and high-power plastic cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102544657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013117073A1 (en) * | 2012-02-08 | 2013-08-15 | 武汉凡谷电子技术股份有限公司 | Cavity filter |
| CN106921013A (en) * | 2017-04-21 | 2017-07-04 | 深圳市威富通讯技术有限公司 | A kind of wave filter and filter circuit |
| EP3561948A4 (en) * | 2017-01-13 | 2019-12-25 | Huawei Technologies Co., Ltd. | Cavity resonator, filter and communication device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007009532A1 (en) * | 2005-07-20 | 2007-01-25 | Matsushita Electric Industrial Co., Ltd. | Plastic combine filter with metal post to increase heat dissipation |
| CN101069321B (en) * | 2004-12-03 | 2010-05-05 | 摩托罗拉公司 | Radio frequency cavity resonatory with heat transport apparatus |
| EP2323214A1 (en) * | 2009-11-16 | 2011-05-18 | Alcatel Lucent | Device for filtering radio frequency signals, coaxial air cavity filter, and manufacturing method thereof |
-
2012
- 2012-02-08 CN CN2012100268209A patent/CN102544657A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101069321B (en) * | 2004-12-03 | 2010-05-05 | 摩托罗拉公司 | Radio frequency cavity resonatory with heat transport apparatus |
| WO2007009532A1 (en) * | 2005-07-20 | 2007-01-25 | Matsushita Electric Industrial Co., Ltd. | Plastic combine filter with metal post to increase heat dissipation |
| EP2323214A1 (en) * | 2009-11-16 | 2011-05-18 | Alcatel Lucent | Device for filtering radio frequency signals, coaxial air cavity filter, and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013117073A1 (en) * | 2012-02-08 | 2013-08-15 | 武汉凡谷电子技术股份有限公司 | Cavity filter |
| WO2013117075A1 (en) * | 2012-02-08 | 2013-08-15 | 武汉凡谷电子技术股份有限公司 | Indoor-use multi-cavity filter |
| WO2013117074A1 (en) * | 2012-02-08 | 2013-08-15 | 武汉凡谷电子技术股份有限公司 | High-frequency band high-power plastic cavity filter |
| EP3561948A4 (en) * | 2017-01-13 | 2019-12-25 | Huawei Technologies Co., Ltd. | Cavity resonator, filter and communication device |
| US10978775B2 (en) | 2017-01-13 | 2021-04-13 | Huawei Technologies Co., Ltd. | Cavity resonator, filter, and communications device |
| CN106921013A (en) * | 2017-04-21 | 2017-07-04 | 深圳市威富通讯技术有限公司 | A kind of wave filter and filter circuit |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |