CN201134487Y - Band-elimination filter for WIMAX communication system - Google Patents
Band-elimination filter for WIMAX communication system Download PDFInfo
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- CN201134487Y CN201134487Y CNU2007200774239U CN200720077423U CN201134487Y CN 201134487 Y CN201134487 Y CN 201134487Y CN U2007200774239 U CNU2007200774239 U CN U2007200774239U CN 200720077423 U CN200720077423 U CN 200720077423U CN 201134487 Y CN201134487 Y CN 201134487Y
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- transmission line
- resonant cavity
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- cover plate
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Abstract
The utility model relates to a band elimination filter used for WIMAX communication systems, which comprises a resonant cavity, an upper cover plate, a lower cover plate, a tuning disc, a upper supporting element and a lower supporting element, a main transmission line, an input connector and an output connector, a matched adjusting screw and an anti-collision screw, wherein the lower cover plate is arranged below the resonant cavity, the tuning disc is arranged on the top surface of the lower cover plate, the anti-collision screw and the matched adjusting screw are arranged on the top surface of the upper cover plate, the main transmission line is fixed inside the resonant cavity by the upper and the lower supporting elements, and the input and the output connectors are arranged at two ends of the main transmission line. Compared with the prior art, the band elimination filter used for WIMAX communication systems has the advantages that the traditional structure formed by utilizing series welding transmission lines with different impedances is changed, assemble consistency and process reliability are significantly increased, simultaneously, impedance matching debug becomes more simple and the like.
Description
Technical field
The utility model relates to band stop filter, particularly is used for the band stop filter of WIMAX communication system.
Background technology
Along with developing rapidly of microwave communication, frequency resource seems and is becoming tight day, the communication standard of successive bands is easy to generate the phase mutual interference, if use band pass filter to realize that the height of successive bands suppresses merely, then need to increase filter and realize the high resonance progression that suppresses, simultaneously for guaranteeing that inserting loss wants the little resonance list chamber that needs again to increase, to obtain higher Q value, but cost is multiplied, and cost performance reduces, and has impelled pressing for of band stop filter thus.Band stop filter passive device normally in microwave communication, can with other filters can't or the difficult interference signal decay of eliminating, the interference signal frequency is selectively suppressed, guarantee the operating frequency operate as normal, need low-loss simultaneously again.What band stop filter adopted is the design principle of distributed constant, and performance index realize by mechanical structure.The tradition band stop filter has resonant cavity usually, cover plate, and the tuned resonance post, tuning screw rod, main transmission line, these several parts of input and output connector are formed.But usually main transmission line often by the transmission line series connection welding of the different transfer impedances of more piece or screw together, technology realizes that consistency is poor, the tuned resonance post separates with tuning screw rod resonance frequency by the common control of tuned resonance post and adjustment screw, take the confined space, the match and regulate point that does not have main transmission line simultaneously, debugging transmission line coupling is not easy to operate, and debugging difficulty is big.And because adjacent resonance intercolumniation spacing four/wavelength (medium medium wavelength) is followed in the design of traditional band stop filter, the band stop filter design needs change resonant cavity spacing that causes different frequency range, cavity size, cover plate, structures such as main transmission line, structure is compact inadequately, seriation that should not product and reducing cost.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of structure the more compact band stop filter that is used for the WIMAX communication system for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: the band stop filter that is used for the WIMAX communication system, it is characterized in that, comprise resonant cavity, upper cover plate, lower cover, tuning disk, last lower support element, main transmission line, input and output connector, the match and regulate screw, crashproof screw, described lower cover is located at the resonant cavity bottom, described tuning disk is located at the lower cover upper surface, described crashproof screw, the match and regulate screw all is located at the upper cover plate upper surface, described main transmission line is fixed in the resonant cavity by last lower support element, and described input and output connector is located at the main transmission line two ends.
Described main transmission line is a U-shaped rectangle transmission line.
The shape of transmission cavity comprises rectangle, square in the described resonant cavity.
The shape in described resonant cavity interior resonance chamber comprises circle, square.
Described tuning disk comprises the screw adjusted assembly, loads disk.
Compared with prior art, the utlity model has the structure that the transmission line series connection that changed the different impedances of traditional employing is welded, greatly improved the assembling consistency, technology stability, the debugging of the impedance matching simultaneously advantage such as more simple that also becomes.
Description of drawings
Fig. 1 is used for the structural representation of the band stop filter of WIMAX communication system for the utility model.
Embodiment
As shown in Figure 1, the band stop filter that is used for the WIMAX communication system, comprise resonant cavity 1, upper cover plate 2, lower cover 3, tuning disk 4, last lower support element 5, main transmission line 6, input and output connector 7, match and regulate screw rod 8, crashproof screw 9, described lower cover 3 is located at resonant cavity 1 bottom, described tuning disk 4 is located at lower cover 3 upper surfaces, described crashproof screw 9, match and regulate screw 8 all is located at upper cover plate 2 upper surfaces, described main transmission line 6 is fixed in the resonant cavity 1 by last lower support element 5, and described input and output connector 7 is located at main transmission line 6 two ends.Described main transmission line 6 is a U-shaped rectangle transmission line.The shape of transmission cavity comprises rectangle, square in the described resonant cavity 1.The shape in described resonant cavity 1 interior resonance chamber comprises circle, square.Described tuning disk 4 comprises the screw adjusted assembly, loads disk.
Its structure principal character is that the band stop filter Frequency point is by tuning disk 4 independent realizations that are fixed on lower cover, stopband coupling amount is realized by the formed distributed capacitance of spacing of tuning disk 4 and main transmission line 6, main transmission line 6 usefulness U-shaped rectangle transmission lines, impedance matching is realized by the serial match and regulate screw 8 that is fixed on upper cover plate, U-shaped main transmission line 6 is used lower support element 5 and is fixed in the resonant cavity 1, all on resonant cavity 1, project organization is more compact for the rectangular cavity of placement U-shaped main transmission line 6 and frequency resonance chamber.
According to the realization principle of band stop filter, band resistance resonant frequency point is realized by tuning disk 4 resonant cavity, has got rid of the method that former cause resonant rod (post) resonant cavity realizes in conjunction with adjusting screw(rod); Main transmission line 6 and corresponding impedance matching thereof adopt a whole U-shaped rectangle transmission line to realize in conjunction with the adjusting screw(rod) that is installed in upper cover plate 2, changed the structure that the transmission line series connection of the different impedances of traditional employing is welded like this, greatly improved the assembling consistency, technology stability, the debugging of impedance matching simultaneously also becomes more simple, the screwed hole of increase and match and regulate screw coupling in upper cover plate 2 designs simultaneously, by regulating the match and regulate screw, change and main transmission line 6 between distributed capacitance, effectively improve the transmission line matching properties; Last lower support element 5 cooperates U-shaped main transmission line 6 to use, and has guaranteed that main transmission line 6 is assembled to the consistency of 1 li of resonant cavity, and product stability; Crashproof screw 9 can play the influence that the responsive weak section of protection product is not subjected to outer impulsive force etc., guarantees that properties of product stablize; The utility model is also advantageous in that the mode that adopts accurate four/wavelength, adopt resonant cavity 1, upper cover plate 2, lower cover 3, U-shaped main transmission line 6, last lower support element 5, input and output connector 7 sharing structure such as grade and overall dimensions only realize the stopband band limits from 800MHz-5GHz by the disk size size that changes tuning disk 4, and bandwidth of rejection 1% to 15%. stopband is suppressed at more than the 60dB, pass band width then from DC to 6GHz, passband insert loss at 0.35dB with interior performance index requirement.
Claims (5)
1. the band stop filter that is used for the WIMAX communication system, it is characterized in that, comprise resonant cavity, upper cover plate, lower cover, tuning disk, go up lower support element, main transmission line, input and output connector, match and regulate screw, crashproof screw, described lower cover is located at the resonant cavity bottom, described tuning disk is located at the lower cover upper surface, described crashproof screw, match and regulate screw all are located at the upper cover plate upper surface, described main transmission line is fixed in the resonant cavity by last lower support element, and described input and output connector is located at the main transmission line two ends.
2. the band stop filter that is used for the WIMAX communication system according to claim 1 is characterized in that, described main transmission line is a U-shaped rectangle transmission line.
3. the band stop filter that is used for the WIMAX communication system according to claim 1 is characterized in that, the shape of transmission cavity comprises rectangle, square in the described resonant cavity.
4. the band stop filter that is used for the WIMAX communication system according to claim 1 is characterized in that, the shape in described resonant cavity interior resonance chamber comprises circle, square.
5. the band stop filter that is used for the WIMAX communication system according to claim 1 is characterized in that, described tuning disk comprises the screw adjusted assembly, loads disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200774239U CN201134487Y (en) | 2007-12-27 | 2007-12-27 | Band-elimination filter for WIMAX communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200774239U CN201134487Y (en) | 2007-12-27 | 2007-12-27 | Band-elimination filter for WIMAX communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201134487Y true CN201134487Y (en) | 2008-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200774239U Expired - Fee Related CN201134487Y (en) | 2007-12-27 | 2007-12-27 | Band-elimination filter for WIMAX communication system |
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| CN (1) | CN201134487Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412433A (en) * | 2011-09-27 | 2012-04-11 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
| CN102428602A (en) * | 2009-03-16 | 2012-04-25 | 株式会社Kmw | Bandstop filter |
| CN102623776A (en) * | 2012-03-20 | 2012-08-01 | 中国计量学院 | Coaxial cavity-based rejection filter |
| GB2505138A (en) * | 2012-12-12 | 2014-02-19 | Radio Design Ltd | A Filter including resonating means and transmission line located on or associated with a support member located over at least a part of the filter body |
| CN106571505A (en) * | 2016-06-26 | 2017-04-19 | 南京濠暻通讯科技有限公司 | Band-stop filter capable of eliminating interference between different service providers |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN109283413A (en) * | 2018-11-08 | 2019-01-29 | 浙江嘉科电子有限公司 | A kind of Novel Filter calibration matching test device |
-
2007
- 2007-12-27 CN CNU2007200774239U patent/CN201134487Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428602B (en) * | 2009-03-16 | 2015-01-28 | 株式会社Kmw | Bandstop filter |
| CN102428602A (en) * | 2009-03-16 | 2012-04-25 | 株式会社Kmw | Bandstop filter |
| US9203131B2 (en) | 2009-03-16 | 2015-12-01 | Kmw Inc. | Band stop filter |
| CN102412433B (en) * | 2011-09-27 | 2014-01-29 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
| CN102412433A (en) * | 2011-09-27 | 2012-04-11 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
| CN102623776A (en) * | 2012-03-20 | 2012-08-01 | 中国计量学院 | Coaxial cavity-based rejection filter |
| GB2505138A (en) * | 2012-12-12 | 2014-02-19 | Radio Design Ltd | A Filter including resonating means and transmission line located on or associated with a support member located over at least a part of the filter body |
| GB2505138B (en) * | 2012-12-12 | 2014-08-06 | Radio Design Ltd | Filter assembly and method of manufacture thereof |
| CN106571505A (en) * | 2016-06-26 | 2017-04-19 | 南京濠暻通讯科技有限公司 | Band-stop filter capable of eliminating interference between different service providers |
| CN106571505B (en) * | 2016-06-26 | 2020-01-14 | 南京濠暻通讯科技有限公司 | Band elimination filter suitable for interference elimination between different operators |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN107046157B (en) * | 2017-01-22 | 2019-09-06 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN109283413A (en) * | 2018-11-08 | 2019-01-29 | 浙江嘉科电子有限公司 | A kind of Novel Filter calibration matching test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20121227 |