CN103117437A - Miniaturization filter - Google Patents
Miniaturization filter Download PDFInfo
- Publication number
- CN103117437A CN103117437A CN2011103655995A CN201110365599A CN103117437A CN 103117437 A CN103117437 A CN 103117437A CN 2011103655995 A CN2011103655995 A CN 2011103655995A CN 201110365599 A CN201110365599 A CN 201110365599A CN 103117437 A CN103117437 A CN 103117437A
- Authority
- CN
- China
- Prior art keywords
- cavity
- base
- axis
- cuboid
- plane
- 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 discloses a miniaturization filter which comprises a cavity body, a base, metal rods, metal plates, an input structure and an output structure, wherein the input structure and the output structure are coaxial and respectively formed by an inner conductor and an outer conductor. The inner conductor is connected with the metal rods or the metal plates, the upper ends of the metal rods are connected with the metal plates, and the lower ends of the metal rods are connected with the base. The cavity body is composed of a top cover and side walls, and is separated into at least two empty cavities by separating plates on the axial direction of the cavity body. The miniaturization filter is characterized in that the metal rods are curved conductors, and the metal rods bend only in a plane which is perpendicular to an axis of the cavity body. Two ends of the metal plates are placed on the axial direction of the cavity, and bend towards an inner base in a plane which is parallel to the axis of the cavity body and perpendicular to the base. The miniaturization filter has the advantages of being easy to process and capable of greatly reducing the size of a cavity body band-pass filter. The band-pass filter can be widely applied to electronic systems of all microwave bands, and especially applied to military and civil fields such as radars, missile guidance and communication.
Description
Technical field
The present invention relates to a kind of compact filter, specifically, a kind of electric capacity and inductance of utilizing simultaneously loads mini filter.
Background technology
Common cavity band-pass filter, its resonant cavity is cavity, causes the overall volume of filter excessive, and particularly in the lower situation of frequency, it is particularly outstanding that this drawback seems.In order to address this problem, people mostly adopt the method for metal column capacitive load, such as common comb filter, comprise cavity, be positioned at least 2 broach and the input/output structure of cavity, and this filter has the characteristics of volume compact.Yet, owing to be subject to the restriction of housing depth, although thisly directly utilize the method that metal column loads can be so that the smaller volume of cavity body filter, this diminishing be limited, and we need to seek new method the miniaturization of cavity band-pass filter is done better.
Summary of the invention
The purpose of this invention is to provide a kind of mini filter, with the miniaturization of further realization band pass filter.
To achieve these goals, the technical solution used in the present invention is: a kind of mini filter comprises cavity 1, the base 3 that is connected with cavity 1, cavity 1 is divided at least 2 cavitys at axis direction by dividing plate 2, and the coaxial input/output structure that is made of inner wire 6 and outer conductor 7; Metallic rod 4 and metallic plate 5 are arranged on cavity inside; Inner wire 6 is connected with Metallic rod 4 or metallic plate 5, Metallic rod 4 upper ends link to each other with metallic plate 5, Metallic rod 4 lower ends link to each other with base 3, described cavity 1 is comprised of top cover and sidewall, described coaxial input/output structure runs through on the left and right sides sidewall that is arranged on cavity 1, and described Metallic rod 4 is at the plane inner bending vertical with cavity 1 axis.
Described cavity 1 is cuboid, and described dividing plate 2 is cuboid, and described base 3 is cuboid, and described metallic plate 5 is cuboid, and each limit that each limit of described dividing plate 2 and metallic plate 5 and cuboid cavity 1 are corresponding is parallel.
Described metallic plate 5 the two ends of cavity 1 axis direction parallel with cavity 1 axis and perpendicular to the plane of base 3 in crooked to base 3 directions.
Be provided with the coupled structure that is communicated with the adjacent cavities microwave signal on the described dividing plate 2.
The cuboid that described metallic plate 5 points to respectively X-direction, Y direction, Z-direction by three limits connects and composes; Described X-direction is the cavity axis direction, and Y direction is the direction perpendicular to base 3, and X-direction and Y direction consist of the XY plane, and Z-direction is the direction perpendicular to the XY plane.
Based on foregoing: a kind of mini filter comprises cavity, base, Metallic rod, metallic plate, the coaxial input/output structure that is made of inner wire and outer conductor; Inner wire is connected with Metallic rod or metallic plate, and the Metallic rod upper end links to each other with metallic plate, and the Metallic rod lower end links to each other with base, and described cavity is comprised of top cover and sidewall, is divided at least 2 cavitys at its axis direction by dividing plate.It is characterized in that the cuboid that described Metallic rod is pointed to respectively horizontal direction, vertical direction and cavity axis direction by three limits connects and composes, and only at the plane inner bending vertical with cavity 1 axis.Described metallic plate 5 the two ends of cavity 1 axis direction parallel with cavity 1 axis and perpendicular to the plane of base 3 in crooked to base 3 directions.
Described cavity is cuboid, and described dividing plate is cuboid, and described base is cuboid, and described metallic plate is cuboid, and described dividing plate is parallel with corresponding each limit with the cuboid cavity, each limit of described metallic plate.Be provided with the coupled structure that is communicated with the adjacent cavities microwave signal on the described dividing plate.The cuboid that described metallic plate points to respectively horizontal direction, vertical direction or cavity axis direction by three limits connects and composes.
The operation principle of band pass filter is: when signal entered filter and run into first resonant cavity, this signal was distributed for the first time.Wherein a part continues transmission along filter, and another part doubly first resonant cavity is reflected back.Signal along filter continuation transmission will run into again second resonant cavity, experience similar process, until export from filter through all resonant cavitys.
In some frequency, the signal that reflects from all resonant cavitys is all offset, and the signal of these frequencies will be exported from filter output, and loss is very little.The other signal of frequency, the signal that from all resonant cavitys, reflects stack, the signal of these frequencies will reflect from filter input end, and will be very little from the signal of output output.Utilize this specific character, the signal low-loss that filter can be made way in the band connection frequency is passed through, and the signal reflex of making way in the stopband is fed back into end.
The invention has the advantages that the volume that processing is simple, can greatly reduce cavity band-pass filter.Band pass filter of the present invention is expected to be widely used in the electronic system of each microwave band, particularly military affairs and the civil areas such as radar, missile guidance, communication.
Description of drawings
Fig. 1 is cross-sectional schematic of the present invention.
Fig. 2 is that A-A of the present invention is to cross-sectional schematic.
Fig. 3 is that embodiment one metallic plate, Metallic rod and base are along cavity axis direction schematic diagram.
Fig. 4 is that embodiment two metallic plates, Metallic rod and base are along cavity axis direction schematic diagram.
Described direction is defined as follows herein:
Cavity 1 axis direction refers to the longest one side of filter centerline direction.Corresponding direction from left to right in Fig. 1.Vertical direction refers to point to filter cavity direction, corresponding vertical direction in Fig. 1 from filter mounts.Horizontal direction, the corresponding direction of pointing to the reader from paper in Fig. 1.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment one
A kind of mini filter comprises cavity 1 as shown in Figure 1, 2, 3, the base 3 that is connected with cavity 1, and cavity 1 is divided at least 2 cavitys at axis direction by dividing plate 2, and the coaxial input/output structure that is made of inner wire 6 and outer conductor 7; Metallic rod 4 and metallic plate 5 are arranged on cavity inside; Inner wire 6 is connected with Metallic rod 4 or metallic plate 5, Metallic rod 4 upper ends link to each other with metallic plate 5, Metallic rod 4 lower ends link to each other with base 3, described cavity 1 is comprised of top cover and sidewall, described coaxial input/output structure runs through on the left and right sides sidewall that is arranged on cavity 1, and described Metallic rod 4 is at the plane inner bending vertical with cavity 1 axis.
Described cavity 1 is cuboid, and described dividing plate 2 is cuboid, and described base 3 is cuboid, and described metallic plate 5 is cuboid, and each limit that each limit of described dividing plate 2 and metallic plate 5 and cuboid cavity 1 are corresponding is parallel.
Be provided with the coupled structure that is communicated with the adjacent cavities microwave signal on the described dividing plate 2.
The cuboid that described metallic plate 5 points to respectively X-direction, Y direction, Z-direction by three limits connects and composes; Described X-direction is the cavity axis direction, and Y direction is the direction perpendicular to base 3, and X-direction and Y direction consist of the XY plane, and Z-direction is the direction perpendicular to the XY plane.
Embodiment two
As shown in Figure 4, a kind of mini filter, its structure metallic plate 5 the two ends of cavity 1 axis direction parallel with cavity 1 axis and perpendicular to the plane of base 3 in outside base 3 direction bendings, all the other with embodiment one in identical.
Claims (6)
1. mini filter, it is characterized in that, comprise cavity (1), the base (3) that is connected with cavity (1), cavity (1) is divided at least 2 cavitys at axis direction by dividing plate (2), and the coaxial input/output structure that is made of inner wire (6) and outer conductor (7); Metallic rod (4) and metallic plate (5) are arranged on cavity inside; Inner wire (6) is connected with Metallic rod (4) or metallic plate (5), Metallic rod (4) upper end links to each other with metallic plate (5), Metallic rod (4) lower end links to each other with base (3), described cavity (1) is comprised of top cover and sidewall, described coaxial input/output structure runs through on the left and right sides sidewall that is arranged on cavity (1), and described Metallic rod (4) is at the plane inner bending vertical with cavity (1) axis.
2. mini filter as claimed in claim 1, it is characterized in that, described cavity (1) is cuboid, described base (3) is cuboid, described dividing plate (2) is cuboid, described metallic plate (5) is cuboid, and each limit corresponding with the cavity (1) of cuboid, each limit of described dividing plate (2) and metallic plate (5) is parallel.
3. mini filter as claimed in claim 2 is characterized in that, described metallic plate (5) the two ends of cavity (1) axis direction parallel with cavity (1) axis and perpendicular to the plane of base (3) in crooked to base (3) direction.
4. mini filter as claimed in claim 1 is characterized in that, is provided with the coupled structure that is communicated with the adjacent cavities microwave signal on the described dividing plate (2).
5. mini filter as claimed in claim 2 is characterized in that, the cuboid that described metallic plate (5) points to respectively X-direction, Y direction, Z-direction by three limits connects and composes; Described X-direction is cavity (1) axis direction, and Y direction is the direction perpendicular to base (3), and X-direction and Y direction consist of the XY plane, and Z-direction is the direction perpendicular to the XY plane.
6. such as the described mini filter of any one in the claim 1 to 5, it is characterized in that described Metallic rod (4) is pointed to respectively T direction of principal axis, M direction of principal axis, the axial cuboid of Q by three limits and connected and composed; Described T direction of principal axis is cavity (1) axis direction, and the M direction of principal axis is the direction perpendicular to base (3), and T direction of principal axis and M direction of principal axis consist of the TM plane, and the Q direction of principal axis is the direction perpendicular to the TM plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103655995A CN103117437A (en) | 2011-11-17 | 2011-11-17 | Miniaturization filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103655995A CN103117437A (en) | 2011-11-17 | 2011-11-17 | Miniaturization filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103117437A true CN103117437A (en) | 2013-05-22 |
Family
ID=48415747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103655995A Pending CN103117437A (en) | 2011-11-17 | 2011-11-17 | Miniaturization filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103117437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463811A (en) * | 2014-04-02 | 2017-02-22 | 安德鲁无线系统有限公司 | Microwave cavity resonator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076019A1 (en) * | 1999-06-04 | 2000-12-14 | Allgon Ab | Temperature-compensated rod resonator |
| US6198363B1 (en) * | 1997-12-15 | 2001-03-06 | Adc Telecommunications Oy | Filter and tuning element |
| CN1574627A (en) * | 2003-05-21 | 2005-02-02 | Kmw公司 | Radio frequency filter |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| CN202333097U (en) * | 2011-11-17 | 2012-07-11 | 成都赛纳赛德科技有限公司 | Mini filter |
-
2011
- 2011-11-17 CN CN2011103655995A patent/CN103117437A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198363B1 (en) * | 1997-12-15 | 2001-03-06 | Adc Telecommunications Oy | Filter and tuning element |
| WO2000076019A1 (en) * | 1999-06-04 | 2000-12-14 | Allgon Ab | Temperature-compensated rod resonator |
| CN1574627A (en) * | 2003-05-21 | 2005-02-02 | Kmw公司 | Radio frequency filter |
| CN101252215A (en) * | 2008-03-06 | 2008-08-27 | 上海交通大学 | Microwave resonant cavity of inner conductor with spiral groove structure |
| CN202333097U (en) * | 2011-11-17 | 2012-07-11 | 成都赛纳赛德科技有限公司 | Mini filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463811A (en) * | 2014-04-02 | 2017-02-22 | 安德鲁无线系统有限公司 | Microwave cavity resonator |
| CN106463811B (en) * | 2014-04-02 | 2019-09-20 | 安德鲁无线系统有限公司 | Microwave cavity resonator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103107391A (en) | Compact type microwave distributed double module band-pass filter | |
| CN102306859B (en) | Low pass filter | |
| CN102509829A (en) | Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression | |
| CN202333090U (en) | Miniature comb filter | |
| CN103762403B (en) | Three-passing-band filter | |
| CN103117436A (en) | Miniaturization band elimination filter | |
| CN103311610A (en) | Stripline high-pass filter based on folding transmission line | |
| CN106816675A (en) | Cavity type bandstop filter and radio-frequency devices | |
| CN207426092U (en) | A kind of ultrathin filter | |
| CN103117433B (en) | Miniaturization band-pass filter | |
| CN202333097U (en) | Mini filter | |
| CN103117437A (en) | Miniaturization filter | |
| CN202405398U (en) | Miniature band-pass filter | |
| US12034195B2 (en) | Band-stop filter and electronic device | |
| CN107768782B (en) | Duplexer based on rectangular microstrip structure | |
| CN103117429A (en) | Miniaturization comb filter | |
| CN101183741B (en) | Compact multimode cavity | |
| CN103311607A (en) | Low-pass filter with changeable cavity width | |
| CN108565532B (en) | Double-layer planar duplexer of high-integration double-mode rectangular resonator | |
| CN202142625U (en) | Low-pass filter | |
| CN202513264U (en) | High pass filter with wire based on folding transmission line | |
| CN202444041U (en) | High-pass strip line filter based on spiral stub | |
| CN202275902U (en) | Filter | |
| CN111628281A (en) | NFC antenna and electronic equipment | |
| CN201130703Y (en) | Compact type multimode resonant cavity |
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: 20130522 |