CN101471469A - Filter containing rectangle resonance pole - Google Patents
Filter containing rectangle resonance pole Download PDFInfo
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- CN101471469A CN101471469A CNA2007101733194A CN200710173319A CN101471469A CN 101471469 A CN101471469 A CN 101471469A CN A2007101733194 A CNA2007101733194 A CN A2007101733194A CN 200710173319 A CN200710173319 A CN 200710173319A CN 101471469 A CN101471469 A CN 101471469A
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- filter
- cover plate
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- tuning screw
- cavity
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- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 8
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000010923 batch production Methods 0.000 abstract 1
- 238000010295 mobile communication Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The invention relates to a filter having a rectangular resonant column. The filter comprises a cover plate, a cavity body, a resonant column, a flange, a frequency tuning screw, and a coupling tuning screw thread body, wherein the cover plate is arranged on the cavity body; the resonant column is arranged on the inner bottom of the cavity; the flange is arranged on the resonant column; and the frequency tuning screw and the coupling tuning screw thread body are arranged on the cover plate. Compared with the prior art, the filter can greatly improve percentage bandwidth and improve the signal transmission capacity and efficiency of communication systems, such as the base station and the repeater station, and has the advantages of stable and reliable performance, simple structure, and batch production.
Description
Technical field
The present invention relates to the pectinate line cavity body filter, particularly a kind of filter that contains rectangle resonance pole.
Background technology
Fast development along with mobile communications industry, mobile phone and personal digital assistant device have obtained application more and more widely, and towards high-performance, high power capacity, high-quality direction develops, the radio frequency that present communication system is adopted has covered very wide frequency band, and in order to improve the large-capacity communication quality, broadband filter has been adopted in the mobile communication base station.The mobile communication transmittability is based on the basis of bandwidth, the wideer higher throughput of bandwidth support, to satisfy the more requirement of high-capacity speed transmission of user, reduce the expense of management information simultaneously, have higher spectrum efficiency than the communication mode of expanding carrier wave.The operation principle of broadband filter is identical with other filters, is used in communication system the signal frequency in the communication link being selected, and difference is that the fixed percentage bandwidth of broadband filter is bigger, and message capacity is bigger.
Fixed percentage bandwidth (Fractional Bandwidth) is defined as: filter bandwidht/filter center frequency.
The fixed percentage bandwidth that the pectinate line cavity body filter of the cylindrical resonance post of present employing can be accomplished is about 15%, sometimes can't satisfy the communication requirement of repeater or base station system, the technological means of taking by this patent, can make the fixed percentage bandwidth of pectinate line cavity body filter reach 20%-25%, thereby improved message capacity greatly, saved hardware resource.
Summary of the invention
Purpose of the present invention is exactly a kind of stable performance is provided in order to overcome the defective that above-mentioned prior art exists, contains the filter of rectangle resonance pole reliably.
Purpose of the present invention can be achieved through the following technical solutions: a kind of filter that contains rectangle resonance pole, it is characterized in that, comprise cover plate, cavity, resonance post, flange, frequency tuning screw, tuning threaded body is coupled, described cover plate is located on the cavity, described resonance post is located at the cavity inner bottom part, described flange is located on the resonance post, and described frequency tuning screw, the tuning threaded body of coupling all are located on the cover plate.
Described cover plate and cavity are fixed by hold-down screw.
Described resonance post comprises two, and the bottom interconnects.
Described frequency tuning screw comprises two.
The tuning threaded body of described coupling comprises coupling tuning screw, suspension member, and this suspension member is fixed on coupling tuning screw bottom.
The tuning threaded body of described coupling is located in the middle of two frequency tuning screws.
Described frequency tuning screw is corresponding with resonance post inner chamber position.
Compared with prior art, the present invention has improved the fixed percentage bandwidth that filter can reach greatly; The signal transmission capacity and the efficient of communication systems such as base station, repeater have been improved; Stable performance, reliable; Simple in structure, be suitable for producing in batches.
Description of drawings
Fig. 1 is a kind of structure of cover plate schematic diagram that contains the filter of rectangle resonance pole of the present invention;
Fig. 2 is the structural representation of the cavity of a kind of filter that contains rectangle resonance pole of the present invention;
Fig. 3 is a kind of Filter Structures schematic diagram that contains rectangle resonance pole of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and the specific embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, a kind of filter that contains rectangle resonance pole of the present invention comprises a cover plate 1 and a cavity 2, fix with hold-down screw between cover plate and the cavity, the cavity the inside scrapes out the groove shape, and at groove the inside installation resonance post 3, be equipped with flange 4 above the resonance post, the resonance post is the cuboid form, and frequency tuning screw 5 and the tuning threaded body 6 of coupling are housed on the cover plate.Because the resonance column bottom is directly to connect together,, realize that filter has very wide fixed percentage bandwidth so can produce very strong coupling, and can change the size of the coupling between the resonance post by the height of change coupling part, it is high more to connect convex, and it is big more to be coupled, otherwise then more little; In addition, can effectively change the size of two couplings between the resonator by regulating two threaded bodies between the resonator, threaded body extend into that the cavity part is many more, and column part is thick more, and it is strong more to be coupled, otherwise then more little.By above measure, can make the fixed percentage bandwidth of filter reach 20%-25%, realize the broadband coupled structure of pectinate line cavity body filter.
The electrical performance indexes of a band pass filter is that centre frequency is 905MHz, and three dB bandwidth is 792-1018MHz, and the center Insertion Loss is less than 1.4dB, and return loss is less than-15dB.
This wave filter technology index fixed percentage bandwidth is (1018-792)/905=25%, so should adopt the filter construction of broadband of the present invention coupling, through the requirement that can touch the mark of its bandwidth of debugging, therefore proved the feasibility of the filter construction of broadband coupling proposed by the invention.
Claims (7)
1. filter that contains rectangle resonance pole, it is characterized in that, comprise cover plate, cavity, resonance post, flange, frequency tuning screw, tuning threaded body is coupled, described cover plate is located on the cavity, described resonance post is located at the cavity inner bottom part, described flange is located on the resonance post, and described frequency tuning screw, the tuning threaded body of coupling all are located on the cover plate.
2. a kind of filter that contains rectangle resonance pole according to claim 1 is characterized in that described cover plate and cavity are fixed by hold-down screw.
3. a kind of filter that contains rectangle resonance pole according to claim 1 is characterized in that described resonance post comprises two, and the bottom interconnects.
4. a kind of filter that contains rectangle resonance pole according to claim 1 is characterized in that described frequency tuning screw comprises two.
5. a kind of filter that contains rectangle resonance pole according to claim 1 is characterized in that, the tuning threaded body of described coupling comprises coupling tuning screw, suspension member, and this suspension member is fixed on coupling tuning screw bottom.
6. a kind of filter that contains rectangle resonance pole according to claim 4 is characterized in that the tuning threaded body of described coupling is located in the middle of two frequency tuning screws.
7. a kind of filter that contains rectangle resonance pole according to claim 1 is characterized in that, described frequency tuning screw is corresponding with resonance post inner chamber position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101733194A CN101471469B (en) | 2007-12-27 | 2007-12-27 | Filter containing rectangle resonance pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101733194A CN101471469B (en) | 2007-12-27 | 2007-12-27 | Filter containing rectangle resonance pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101471469A true CN101471469A (en) | 2009-07-01 |
| CN101471469B CN101471469B (en) | 2012-11-28 |
Family
ID=40828693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101733194A Active CN101471469B (en) | 2007-12-27 | 2007-12-27 | Filter containing rectangle resonance pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101471469B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714686A (en) * | 2009-12-21 | 2010-05-26 | 成都赛纳赛德科技有限公司 | Ultra wide band cavity filter |
| CN107732390A (en) * | 2017-10-20 | 2018-02-23 | 中电科技集团重庆声光电有限公司 | A kind of electromagnetism hybrid coupled cavity body filter |
| CN115000656A (en) * | 2022-04-13 | 2022-09-02 | 华南理工大学 | Adjustable filter and adjustable duplexer based on coaxial cavity resonator |
-
2007
- 2007-12-27 CN CN2007101733194A patent/CN101471469B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714686A (en) * | 2009-12-21 | 2010-05-26 | 成都赛纳赛德科技有限公司 | Ultra wide band cavity filter |
| CN107732390A (en) * | 2017-10-20 | 2018-02-23 | 中电科技集团重庆声光电有限公司 | A kind of electromagnetism hybrid coupled cavity body filter |
| CN115000656A (en) * | 2022-04-13 | 2022-09-02 | 华南理工大学 | Adjustable filter and adjustable duplexer based on coaxial cavity resonator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101471469B (en) | 2012-11-28 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KAELUS COMMUNICATION EQUIPMENT (SHANGHAI) CO., LTD Free format text: FORMER NAME: ALLRIZON-TONGGUANG COMMUNICATIONS EQUIPMENT (SHANGHAI) CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 200335 Shanghai city Changning District Guang Shun building B No. 33 south room two floor of the South Tower Patentee after: Kai Kai communications equipment (Shanghai) Co., Ltd. Address before: Changning District Tianshan Road 200335 Shanghai City 789 Building No. 3 West Patentee before: Allrizon-Tongguang Communications Equipment (Shanghai) Co., Ltd. |