CN101894993A - Communication equipment, cavity filter and tuning post thereof - Google Patents
Communication equipment, cavity filter and tuning post thereof Download PDFInfo
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- CN101894993A CN101894993A CN2010102268026A CN201010226802A CN101894993A CN 101894993 A CN101894993 A CN 101894993A CN 2010102268026 A CN2010102268026 A CN 2010102268026A CN 201010226802 A CN201010226802 A CN 201010226802A CN 101894993 A CN101894993 A CN 101894993A
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Abstract
The embodiment of the invention discloses a cavity filter and a tuning post thereof. The cavity filter comprises a cavity, a cover plate and the tuning post, wherein the cover plate covers the cavity to form a resonant cavity; the tuning post is inserted in the resonant cavity; and at least part of the tuning post is of hollow structure. At least part of the tuning post disclosed by the embodiment of the invention is of hollow structure, thus not only lowering the material cost of the cavity filter, but also greatly lightening the overall weight of the cavity filter under the premise of ensuring the same effect. In addition, the embodiment of the invention also discloses communication equipment using the cavity filter. The manufacturing cost of the communication equipment can be greatly lowered and the overall weight of the communication equipment can be lightened as the communication equipment adopts the cavity filter comprising the tuning post of hollow structure.
Description
[technical field]
The present invention relates to the wave filter technology field, particularly a kind of cavity body filter and tuning plug thereof also relate to a kind of communication equipment that uses this cavity body filter.
[background technology]
Cavity body filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Cavity body filter generally comprises three classes, and the first kind is a coaxial cavity filter, and second class is a dielectric filter, and the 3rd class is a waveguide filter.
With regard to coaxial cavity filter (being called for short cavity body filter down), see also Fig. 1, Fig. 1 is the structural representation of a kind of cavity body filter in the prior art, comprises that front view and A-A are to sectional view.
As shown in Figure 1, this cavity body filter 10 comprises cavity 11, cover plate 12, pad 13, nut 14, resonatron (figure does not show) and tuning plug 15.Cover plate 12 capping cavitys 11 are to form resonant cavity, cover plate 12 is provided with installing hole (not sign), further be provided with pad 13, nut 14 on the installing hole, tuning plug 15 runs through cover plate 12 and is inserted in cavity 11, changes the radio frequency parameter of cavity body filter 10 by the fine position of tuning plug 15 relative resonatrons.
What deserves to be mentioned is, the cavity body filter of single resonant cavity only is shown among the figure, those skilled in the art easily expect, the normal filter that adopts in communication equipment with a plurality of resonant cavitys, and cavity body filter is by the coupling work each other of a plurality of resonant cavitys.Therefore, cavity body filter need be locked in a large number the tuning plug of (at least tens, hundreds of is thousands of at most).And tuning plug has length that weak point is arranged, and generally is as short as 10 millimeters, grows to 70 millimeters, even longer.
In research and practice process to prior art, the present inventor finds that in the prior art, tuning plug all adopts solid construction, and because the specific (special) requirements of cavity body filter signal index, the material of these tuning plugs mostly is a metal brass.The tuning plug of solid construction is the material cost costliness not only, and causes product quality integral body heavier.
[summary of the invention]
In order to solve the tuning plug material cost costliness of solid construction in the prior art, and cause the heavier problem of product quality integral body, the embodiment of the invention provides a kind of tuning plug of new structure to solve the problems referred to above under the prerequisite that guarantees same effect.
The embodiment of the invention solves the problems of the technologies described above the technical scheme of being taked and provides a kind of cavity body filter, and this cavity body filter comprises cavity, cover plate and tuning plug, and this this cavity of cover plate capping is to form resonant cavity, and this tuning plug is inserted in this resonant cavity.Wherein, this tuning plug adopts hollow-core construction at least in part.
The embodiment of the invention also provides a kind of communication equipment, and it comprises above-mentioned cavity body filter, and this chamber cavity body filter is located at the transceiver circuit part of this communication equipment, is used for signal is selected.
The embodiment of the invention also provides a kind of tuning plug, and this tuning plug is used to be installed in cavity body filter, and wherein, this tuning plug adopts hollow-core construction at least in part.
Compared with prior art, the tuning plug that the embodiment of the invention provides adopts hollow-core construction at least in part, under the prerequisite that guarantees same effect, not only reduced the material cost of tuning plug, and alleviated the overall weight of product widely, communication equipment that the embodiment of the invention provides and cavity body filter thereof adopt above-mentioned tuning plug, effectively reduce equipment cost, and have alleviated the overall weight of product.
[description of drawings]
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, 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 structural representation of a kind of cavity body filter and tuning plug thereof in the prior art, comprises that front view and A-A are to sectional view;
Fig. 2 is the structural representation of cavity body filter and tuning plug thereof according to an embodiment of the invention, comprises that front view and B-B are to sectional view;
Fig. 3 is the structural representation of tuning plug according to an embodiment of the invention, comprises that front view and C-C are to sectional view;
Fig. 4 is the structural representation of tuning plug according to another embodiment of the present invention, comprises that front view and D-D are to sectional view;
Fig. 5 is the structural representation of tuning plug according to another embodiment of the present invention, comprises that front view and E-E are to sectional view;
Fig. 6 is the structural representation of tuning plug according to another embodiment of the present invention, comprises that front view and F-F are to sectional view;
Fig. 7 is the structural representation according to the tuning plug of further embodiment of this invention, comprises that front view and G-G are to sectional view; And
Fig. 8 is the structural representation of tuning plug according to yet another embodiment of the invention, comprises that front view and H-H are to sectional view.
[embodiment]
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also Fig. 2, Fig. 2 is the structural representation of cavity body filter and tuning plug thereof according to an embodiment of the invention, comprises front view and B-B to sectional view, wherein in order to narrate the convenient structure that has shown tuning plug in front view.
As shown in Figure 2, cavity body filter 20 mainly comprises cavity 21, cover plate 22, pad 23, nut 24 and tuning plug 25.
Wherein, cover plate 22 capping cavitys 21 are to form resonant cavity 26, cover plate 22 is provided with installing hole (sign), further is provided with pad 23, nut 24 on the installing hole, and tuning plug 25 comprises Lower Half 252 and the first half 254 (Lower Half and the first half are not limited to divide equally situation) herein.Lower Half 252 has first end 253, and first end 253 is positioned at resonant cavity 26 inside, and the first half 254 has the second end 255, and the second end 255 is positioned at resonant cavity 26 outsides.Tuning plug 25 runs through cover plate 22 and is inserted on the cavity 21, changes the radio frequency parameter of cavity body filter 20 by the fine position of tuning plug 25 in resonant cavity 26.
In other embodiments, also can directly on the cover plate 22 of cavity body filter 20, screwed hole be set, in the case, then can save pad 23 and nut 24.Certainly, the cavity body filter of present embodiment also comprises various other conventional components or structure, herein, present embodiment is only to being described with present embodiment inventive point relevant portion, other concrete parts or structure can not be construed as limiting the invention with reference to the existing conventional implementation.
Need to prove that in order to narrate conveniently, only shown a resonant cavity among the figure in this article, the cavity body filter in the practical application may comprise a plurality of resonant cavitys, cover plate capping cavity forms above-mentioned resonant cavity.Cavity body filter carries out work by the coupling each other of a plurality of resonant cavitys, and this capping can realize electromagnetic shielding, prevents leakage signal.Because resonant cavity is a plurality of, therefore the quantity of the tuning plug 25 that needs can be a lot.
Because the specific (special) requirements of cavity body filter 20 signal indexs, the material of tuning plug 25 mostly are expensive metal brass, in order to reduce production costs, in the tuning plug 25 employing hollow-core constructions of the embodiment of the invention.Adopt hollow-core construction not only can guarantee that cavity body filter has identical effect, and greatly reduce the production cost, further alleviated the overall weight of product simultaneously.
Particularly, please in the lump referring to Fig. 3, Fig. 3 is the structural representation of tuning plug 30 according to an embodiment of the invention, comprises that front view and C-C are to sectional view.
In the present embodiment, tuning plug 30 comprises the Lower Half 310 and the first half 320.Wherein, Lower Half 310 has first end 312, and this first end 312 seals and is positioned at resonant cavity (not shown) inside, and the first half 320 has the second end 322, and these the second end 322 open-endeds also are positioned at resonant cavity (not shown) outside.
In the present embodiment, tuning plug 30 integrated moldings are hollow-core construction, and the first half 320 also has the wall thickness greater than Lower Half 310, so that machining screw 324 can increase bonding strength simultaneously.This setting can make the weight optimization of tuning plug 30, and for example, the first half 320 wall thickness are about 1 millimeter, and the wall thickness of Lower Half 310 is about 0.3 millimeter.
In addition, the second end 322 also is provided with " one " word groove shaped closing in structure, so that cooperate the straight screwdriver application of force.Certainly, the closing in structure is not limited to this, and those skilled in the art expect in the prior art other closing in structures commonly used easily, for example " ten " word groove etc.
Next, please in the lump referring to Fig. 4, Fig. 4 is the structural representation of tuning plug 40 according to another embodiment of the present invention, comprises that front view and D-D are to sectional view.
In the present embodiment, tuning plug 40 has first end 412 and the second end 422.This first end 412 seals and is positioned at resonant cavity (not shown) inside, and these the second end 422 open-endeds also are positioned at resonant cavity (not shown) outside.
In the present embodiment, tuning plug 40 integrated moldings are hollow-core construction, and have uniform wall thickness, and this tuning plug 40 is provided with full bar screw thread 430, make that the whole manufacturing process of tuning plug 40 is simple, quick.
Equally, the second end 422 also is provided with " one " word groove shaped closing in structure, so that cooperate the straight screwdriver application of force.Certainly, the closing in structure is not limited to this, and those skilled in the art expect in the prior art other closing in structures commonly used easily, for example " ten " word groove etc.
Next, please in the lump referring to Fig. 5, Fig. 5 is the structural representation of tuning plug 50 according to another embodiment of the present invention, comprises that front view and E-E are to sectional view.
In the present embodiment, tuning plug 50 has first end 512 and the second end 522.This first end 512 seals and is positioned at resonant cavity 21 (not shown) inside, and these the second end 522 open-endeds also are positioned at resonant cavity 21 (not shown) outside.
In the present embodiment, tuning plug 50 integrated moldings are hollow-core construction, and have uniform wall thickness, and this tuning plug 50 is provided with full bar screw thread 530, make that the whole manufacturing process of tuning plug 40 is simple, quick.
Slightly different with the foregoing description, in the present embodiment, the second end 422 is provided with projection polygon closing in structure, can comprise quadrangle, hexagon projection or the like, is suitable for instruments such as engage sleeves barrel spanner and screws.Adopt projection polygon closing in structure, be more suitable for cooperating the instrument of screwing to carry out the application of force, and to tuning plug 50 also playing a good protection own, distortion is not easy to twist.
Next, please in the lump referring to Fig. 6, Fig. 6 is the structural representation of tuning plug 60 according to another embodiment of the present invention, comprises that front view and F-F are to sectional view.
In the present embodiment, tuning plug 60 has first end 612 and the second end 622.This first end 612 seals and is positioned at resonant cavity (not shown) inside, and this second end 622 seals and is positioned at resonant cavity (not shown) outside.
In the present embodiment, tuning plug 60 integrated moldings are hollow-core construction, and have uniform wall thickness, and this tuning plug 60 is provided with full bar screw thread 630, make that the whole manufacturing process of tuning plug 60 is simple, quick.
Slightly different with the foregoing description, in the present embodiment, the second end 422 is provided with depression polygon closing in structure, can comprise quadrangle, hexagon depression or the like, and instruments such as interior four jiaos of cooperation, inner hexagon spanner screw.Adopt projection polygon closing in structure, be more suitable for cooperating the instrument of screwing to carry out the application of force, and to tuning plug 60 also playing a good protection own, distortion is unlikely to twist.
Next, please in the lump referring to Fig. 7, Fig. 7 is the structural representation according to the tuning plug 70 of further embodiment of this invention, comprises that front view and G-G are to sectional view.
In the present embodiment, tuning plug 70 comprises the Lower Half 710 and the first half 720.Wherein, Lower Half 710 is hollow body, and Lower Half 710 has first end 712, this first end 712 seals and is positioned at resonant cavity (not shown) inside, the first half 720 is solid screw, and the first half 720 has the second end 722, and this second end 722 is positioned at resonant cavity (not shown) outside.
In the present embodiment, 730 places can adopt that riveted joint, spiral are connected at the junction surface, the mode of welding or interference fit engages for the first half 720 and Lower Half 710.The form of Lower Half 710 and the first half 720 splits combination has reduced the complexity of tuning plug 70 integrated moldings, and only need integrated molding Lower Half 710, and the first half 720 can be selected plain screw for use, has further reduced the material cost of tuning plug 70.
Next, please in the lump referring to Fig. 8, Fig. 8 is the structural representation of tuning plug 80 according to yet another embodiment of the invention, comprises that front view and H-H are to sectional view.
In the present embodiment, tuning plug 80 comprises the Lower Half 810 and the first half 820.Wherein, Lower Half 810 is hollow body, and Lower Half 810 has first end 812, and this first end 812 is positioned at resonant cavity 21 (not shown) inside.The first half 820 is a hollow screw, and the first half 820 has the second end 822, and this second end 822 is positioned at resonant cavity (not shown) outside.
Present embodiment and the foregoing description slightly difference are that the first half 820 and Lower Half 810 are hollow-core construction.Therefore, present embodiment has further reduced the weight of tuning plug 80, and the split combining form of the first half 820 and Lower Half 810 has reduced the complexity of tuning plug 80 integrated moldings simultaneously.
What deserves to be mentioned is, more than among each embodiment, different architectural feature (for example above-mentioned multiple closing in structure) can be used in combination, and is not limited to shown in each accompanying drawing.
Need to prove, the tuning plug of the embodiment of the invention not only can be used with resonatron in coaxial cavity filter, at least can also be applied in other cavity body filters, such as level or otherwise insert in the resonant cavity, use separately and realize adjusting coupling amount between intra resonant cavity or the resonant cavity.
In sum, those skilled in the art understand easily, the tuning plug of the embodiment of the invention adopts hollow-core construction at least in part, the tuning plug of the solid construction that it is traditional relatively, under the prerequisite that guarantees same effect, not only reduce material cost, and alleviated the overall weight of product widely.To comprise that the cavity body filter of above-mentioned tuning plug is applied to the transceiver circuit part of communication equipment, can effectively reduce equipment cost, alleviate the product total quality.
It is pointed out that terms such as " first " mentioned in an embodiment of the present invention, " second " only are the letter symbols that adopts as required, in practice, be not limited to this, and this Chinese character number can be exchanged use.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (16)
1. cavity body filter, described cavity body filter comprises:
Cavity;
Cover plate, the described cavity of described cover plate capping to be forming resonant cavity, and
Tuning plug, described tuning plug are inserted in the described resonant cavity;
It is characterized in that described tuning plug adopts hollow-core construction at least in part.
2. cavity body filter according to claim 1 is characterized in that, described tuning plug comprises:
Lower Half, described Lower Half has first end, and described first end is positioned at described intra resonant cavity; And
The first half, the described first half has the second end, and described the second end is positioned at described resonant cavity outside.
3. cavity body filter according to claim 2 is characterized in that described hollow-core construction is positioned within the described Lower Half, and selectivity is positioned within the described first half.
4. according to each described cavity body filter in the claim 1 to 3, it is characterized in that described tuning plug integrated molding is hollow-core construction, described first end seals, and described the second end selectivity is sealed.
5. cavity body filter according to claim 4 is characterized in that, described the second end is provided with the closing in structure that cooperation screws the instrument application of force, and described closing in structure is " one " word groove, " ten " word groove, protruding polygon or depression polygon.
6. according to each described cavity body filter in the claim 1 to 3, it is characterized in that the described first half is provided with screw thread, the described Lower Half property selected is provided with screw thread, and when described Lower Half was not provided with screw thread, the wall thickness of described Lower Half was less than the wall thickness of the described first half.
7. according to each described cavity body filter in the claim 1 to 3, it is characterized in that, the described first half is hollow-core construction or solid construction, and described Lower Half is a hollow-core construction, and the described first half and described Lower Half adopt that riveted joint, spiral are connected, the mode of welding or interference fit engages.
8. according to each described cavity body filter in the claim 1 to 3, it is characterized in that, described cover plate is provided with installing hole, described tuning plug runs through described installing hole assembling, changes the radio frequency parameter of described cavity body filter by the fine position of first end in described resonant cavity of described tuning plug.
9. a communication equipment is characterized in that, described communication equipment comprises that described cavity body filter is located at the transceiver circuit part of described communication equipment, is used for signal is selected according to each described cavity body filter among the claim 1-8.
10. a tuning plug is used to be installed in cavity body filter, it is characterized in that, described tuning plug adopts hollow-core construction at least in part.
11. tuning plug according to claim 10 is characterized in that, described tuning plug comprises:
Lower Half, described Lower Half has first end; And
The first half, the described first half has the second end.
12. tuning plug according to claim 11 is characterized in that, described hollow-core construction is positioned within the described Lower Half, and selectivity is positioned within the described first half.
13., it is characterized in that described tuning plug integrated molding is hollow-core construction according to each described tuning plug in the claim 10 to 12, described first end seals, described the second end selectivity is sealed.
14. tuning plug according to claim 13 is characterized in that, described the second end is provided with the closing in structure that cooperation screws the instrument application of force, and described closing in structure is " one " word groove, " ten " word groove, protruding polygon or depression polygon.
15. according to each described tuning plug in the claim 10 to 12, it is characterized in that the described first half is provided with screw thread, the described Lower Half property selected is provided with screw thread, when described Lower Half was not provided with screw thread, the wall thickness of described Lower Half was less than the wall thickness of the described first half.
16. according to each described tuning plug in the claim 10 to 12, it is characterized in that, the described first half is hollow-core construction or solid construction, and described Lower Half is a hollow-core construction, and the described first half and described Lower Half adopt that riveted joint, spiral are connected, the mode of welding or interference fit engages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102268026A CN101894993A (en) | 2010-07-14 | 2010-07-14 | Communication equipment, cavity filter and tuning post thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102268026A CN101894993A (en) | 2010-07-14 | 2010-07-14 | Communication equipment, cavity filter and tuning post thereof |
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| CN101894993A true CN101894993A (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102268026A Pending CN101894993A (en) | 2010-07-14 | 2010-07-14 | Communication equipment, cavity filter and tuning post thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290622A (en) * | 2011-04-29 | 2011-12-21 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter, resonant rod and manufacturing method of resonant rod |
| CN103035997A (en) * | 2011-09-29 | 2013-04-10 | 深圳光启高等理工研究院 | Resonant cavity |
| CN103624539A (en) * | 2012-08-29 | 2014-03-12 | 深圳市云海通讯股份有限公司 | Automatic assembling technology and device of microwave filter tuning screw |
| KR20140004340U (en) * | 2012-12-20 | 2014-07-18 | 주식회사 케이엠더블유 | Radio frequency |
| CN106252796A (en) * | 2016-08-30 | 2016-12-21 | 东莞鸿爱斯通信科技有限公司 | Wave filter |
| WO2017113168A1 (en) * | 2015-12-30 | 2017-07-06 | 深圳市大富科技股份有限公司 | Filter and cover plate thereof, and thread machining process for cover plate of filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879537Y (en) * | 2006-03-07 | 2007-03-14 | 摩比天线技术（深圳）有限公司 | Filter reinforced coupling structure |
| CN201063357Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Input/output regulation type coupling device for filter |
| CN201466181U (en) * | 2009-08-03 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Low noise electrically tunable filter |
| CN202004123U (en) * | 2010-07-14 | 2011-10-05 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and tuning rod thereof |
-
2010
- 2010-07-14 CN CN2010102268026A patent/CN101894993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879537Y (en) * | 2006-03-07 | 2007-03-14 | 摩比天线技术（深圳）有限公司 | Filter reinforced coupling structure |
| CN201063357Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Input/output regulation type coupling device for filter |
| CN201466181U (en) * | 2009-08-03 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Low noise electrically tunable filter |
| CN202004123U (en) * | 2010-07-14 | 2011-10-05 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and tuning rod thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290622A (en) * | 2011-04-29 | 2011-12-21 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter, resonant rod and manufacturing method of resonant rod |
| CN103035997A (en) * | 2011-09-29 | 2013-04-10 | 深圳光启高等理工研究院 | Resonant cavity |
| CN103035997B (en) * | 2011-09-29 | 2016-08-31 | 深圳光启高等理工研究院 | A kind of resonator cavity |
| CN103624539A (en) * | 2012-08-29 | 2014-03-12 | 深圳市云海通讯股份有限公司 | Automatic assembling technology and device of microwave filter tuning screw |
| KR20140004340U (en) * | 2012-12-20 | 2014-07-18 | 주식회사 케이엠더블유 | Radio frequency |
| KR200482481Y1 (en) | 2012-12-20 | 2017-02-01 | 주식회사 케이엠더블유 | Radio frequency filter |
| WO2017113168A1 (en) * | 2015-12-30 | 2017-07-06 | 深圳市大富科技股份有限公司 | Filter and cover plate thereof, and thread machining process for cover plate of filter |
| CN106252796A (en) * | 2016-08-30 | 2016-12-21 | 东莞鸿爱斯通信科技有限公司 | Wave filter |
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Application publication date: 20101124 |