CN101471470A - Band-stop filter - Google Patents
Band-stop filter Download PDFInfo
- Publication number
- CN101471470A CN101471470A CNA2007101733404A CN200710173340A CN101471470A CN 101471470 A CN101471470 A CN 101471470A CN A2007101733404 A CNA2007101733404 A CN A2007101733404A CN 200710173340 A CN200710173340 A CN 200710173340A CN 101471470 A CN101471470 A CN 101471470A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- resonant cavity
- main transmission
- stop filter
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to a band stop filter, which comprises a resonant cavity, an upper cover plate, a lower cover plate, a tuning disc, an upper and a lower support, a main transmission line, an I/O connector, a matching adjusting screw, and an anti-collision screw, wherein the lower cover plate is arranged on the lower part of the resonant cavity; the tuning disc is arranged on the upper surface of the lower cover plate; the anti-collision screw and the matching adjusting screw are arranged on the upper surface of the upper cover plate; the main transmission line is fixed in the resonant cavity by the upper and the lower supports; and the I/O connector is arranged on both ends of the main transmission line. Compared with the prior art, the band stop filter is different from the conventional structure formed by welding serially-connected transmission lines with different impedances, thereby greatly improving the assembly consistency and the process stability, and simplifying the impedance matching adjustment.
Description
Technical field
The present invention relates to filter, particularly a kind of band stop filter.
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
Purpose of the present invention is exactly to provide a kind of structure more compact band stop filter for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of band stop filter, 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 present invention has the structure that the transmission line series connection that changed the different impedances of traditional employing is welded, and has 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 the structural representation of a kind of band stop filter of the present invention.
Embodiment
As shown in Figure 1, a kind of band stop filter, comprise resonant cavity 1, upper cover plate 2, lower cover 3, tuning disk 4, go up 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 are 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 present invention 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. band stop filter, 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. a kind of band stop filter according to claim 1 is characterized in that, described main transmission line is a U-shaped rectangle transmission line.
3. a kind of band stop filter according to claim 1 is characterized in that, the shape of transmission cavity comprises rectangle, square in the described resonant cavity.
4. a kind of band stop filter according to claim 1 is characterized in that, the shape in described resonant cavity interior resonance chamber comprises circle, square.
5. a kind of band stop filter 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 |
|---|---|---|---|
| CNA2007101733404A CN101471470A (en) | 2007-12-27 | 2007-12-27 | Band-stop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101733404A CN101471470A (en) | 2007-12-27 | 2007-12-27 | Band-stop filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101471470A true CN101471470A (en) | 2009-07-01 |
Family
ID=40828694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101733404A Pending CN101471470A (en) | 2007-12-27 | 2007-12-27 | Band-stop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101471470A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894994A (en) * | 2010-07-13 | 2010-11-24 | 江苏贝孚德通讯科技股份有限公司 | Band elimination filter |
| CN103066351A (en) * | 2011-10-19 | 2013-04-24 | 成都赛纳赛德科技有限公司 | Compact type band elimination filter |
| CN103117434A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Band rejection filter |
| CN103117432A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Harmonic suppressor |
| CN105914433A (en) * | 2016-05-05 | 2016-08-31 | 陈运涛 | Band-stop filter applied to broadband receiver |
| CN107202922A (en) * | 2017-05-24 | 2017-09-26 | 电子科技大学 | Strong-electromagnetic field environmentally conscious materialses microwave dielectric property studies test system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825267A (en) * | 1997-07-24 | 1998-10-20 | Allen Telecom Inc. | Filter tuning assmebly |
| US20050040916A1 (en) * | 2003-08-23 | 2005-02-24 | Kmw Inc. | Variable radio frequency band filter |
| CN200962447Y (en) * | 2006-09-29 | 2007-10-17 | 深圳国人通信有限公司 | Built-in coaxial cavity band resistance filter of the transmission line |
-
2007
- 2007-12-27 CN CNA2007101733404A patent/CN101471470A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825267A (en) * | 1997-07-24 | 1998-10-20 | Allen Telecom Inc. | Filter tuning assmebly |
| US20050040916A1 (en) * | 2003-08-23 | 2005-02-24 | Kmw Inc. | Variable radio frequency band filter |
| CN200962447Y (en) * | 2006-09-29 | 2007-10-17 | 深圳国人通信有限公司 | Built-in coaxial cavity band resistance filter of the transmission line |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894994A (en) * | 2010-07-13 | 2010-11-24 | 江苏贝孚德通讯科技股份有限公司 | Band elimination filter |
| CN103066351A (en) * | 2011-10-19 | 2013-04-24 | 成都赛纳赛德科技有限公司 | Compact type band elimination filter |
| CN103066351B (en) * | 2011-10-19 | 2015-04-22 | 成都赛纳赛德科技有限公司 | Compact type band elimination filter |
| CN103117434A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Band rejection filter |
| CN103117432A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Harmonic suppressor |
| CN103117432B (en) * | 2011-11-17 | 2015-07-29 | 成都赛纳赛德科技有限公司 | A kind of harmonic shutter |
| CN105914433A (en) * | 2016-05-05 | 2016-08-31 | 陈运涛 | Band-stop filter applied to broadband receiver |
| CN107202922A (en) * | 2017-05-24 | 2017-09-26 | 电子科技大学 | Strong-electromagnetic field environmentally conscious materialses microwave dielectric property studies test system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201134487Y (en) | Band-elimination filter for WIMAX communication system | |
| CN201063353Y (en) | Cavity filter with naught cavity | |
| US8222975B2 (en) | Transmission line resonator, high-frequency filter using the same, high-frequency module, and radio device | |
| CN101471470A (en) | Band-stop filter | |
| Zhou et al. | Miniature microstrip bandpass filter using resonator-embedded dual-mode resonator based on source-load coupling | |
| CN103236572A (en) | Compact microwave distributed double-mold band-pass filter | |
| US5262742A (en) | Half-wave folded cross-coupled filter | |
| Pelliccia et al. | Very-compact waveguide bandpass filter based on dual-mode TM cavities for satellite applications in Ku-band | |
| CN107256998B (en) | Based on half module substrate integrated wave guide Meta Materials line filter | |
| CN201011666Y (en) | Band stop filter | |
| CN101604783A (en) | Compact type microwave cavity | |
| CN201387928Y (en) | Hairpin microstrip bandpass filter | |
| CN201084809Y (en) | A Ku wave band bypass coupling wave-guide filter | |
| JPH0223701A (en) | Waveguide band pass filter | |
| CN106229591B (en) | A kind of miniaturization Terahertz low-pass filter | |
| CN206076464U (en) | A kind of miniaturization Terahertz low pass filter | |
| CN204578492U (en) | A kind of broadband belt flow-through crystal band stop filter | |
| CN103560766B (en) | Crystal filter | |
| Pu et al. | Miniaturized substrate integrated waveguide bandpass filters based on novel complementary split ring resonators | |
| JP6255605B2 (en) | Artificial dielectric resonator and artificial dielectric filter using the same | |
| Golzar et al. | Orthogonal-mode dual-band rectangular waveguide filters | |
| CN202616376U (en) | Adjustable band-stop filter | |
| CN202333095U (en) | Band-stop filter | |
| CN203537348U (en) | Crystal filter | |
| Safwat et al. | Dual bandstop resonator using combined split ring resonator and defected ground structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090701 |