CN201601202U - Dual-polarized filter - Google Patents
Dual-polarized filter Download PDFInfo
- Publication number
- CN201601202U CN201601202U CN200920299299XU CN200920299299U CN201601202U CN 201601202 U CN201601202 U CN 201601202U CN 200920299299X U CN200920299299X U CN 200920299299XU CN 200920299299 U CN200920299299 U CN 200920299299U CN 201601202 U CN201601202 U CN 201601202U
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- Prior art keywords
- cavity
- polarized filter
- filter
- dual
- double polarized
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Abstract
The utility model discloses a dual-polarized filter, which belongs to the filter technique and manly resolves the problem that filtering of two mutually-orthogonal linearly polarized waves cannot be simultaneously realized in the prior art. The dual-polarized filter comprises a cavity and at least two metal diaphragms, wherein cross-type coupling slits are arranged on the metal diaphragms. The cavity is of a metal columnar structure with rectangular cross section. The metal diaphragms are rectangular. Tuning screws extending into the cavity are arranged on the cavity and movably connected with the wall of the cavity. A portion, extending into the cavity, of each tuning screw is arranged inside the coupling slit. The dual-polarized filter has simple structure and convenient processing debugging, and is mainly used for fields as satellite communication, satellite television and the like.
Description
Technical field
The utility model relates to filter, specifically, relates to a kind of double polarized filter that is used for two mutually orthogonal line polarization waves are carried out simultaneously filtering.
Background technology
In order to utilize frequency spectrum resource fully, in communication system, usually utilize two mutually orthogonal linear polarised electromagnetic wave.For filtering noise, the present technology that adopts usually is that the electromagnetic wave that earlier difference is polarized separates on the route of transmission, increases filter more respectively and carries out filtering.In this case, will need two linear polarization filters.And, because the electromagnetic wave of two polarised directions is propagated, will increase the volume and weight of system in two approach, influence system's miniaturization requirement, the application of filter is restricted.
The utility model content
The purpose of this utility model is to provide a kind of double polarized filter, solve the problem that prior art exists, not only reach the purpose of two mutually orthogonal line polarization waves being carried out simultaneously filtering, can also guarantee higher isolation between two mutually orthogonal line polarization waves.
To achieve these goals, the technical solution adopted in the utility model is as follows;
Double polarized filter comprises cavity and at least two metallic membranes, it is characterized in that described metallic membrane is provided with coupling slot, and described coupling slot is " ten " font coupling slot.
Described cavity is the columnar metal structure.
The cross section of described cavity is a rectangle.
Described metallic membrane is a rectangle.
Described cavity is provided with the tuning screw that extends in the cavity.
Become to flexibly connect between described tuning screw and the cavity wall.
The part that described tuning screw extends in the cavity is positioned at coupling slot.
Can know that from prior art metal-loaded diaphragm periodically in waveguide can form passband and stopband, thereby constitute filter.The hole crack structure is set, one side can make the enough another sides that is coupled to of microwave energy on this metallic membrane from this metallic membrane.If this Filter Structures all has symmetry with respect to two plane orthogonal of wave filter axis, this filter can carry out filtering simultaneously to two orthogonal line polarization waves.
On the other hand, in the rectangle microwave structure, can propagate the electromagnetic wave of two polarised directions simultaneously, its polarised direction is vertical with two limits of rectangular configuration respectively.If this Filter Structures all has symmetry with respect to two plane orthogonal of wave filter axis, isolate between the microwave of above-mentioned two polarised directions.The utility model technology utilizes the above-mentioned symmetry of " ten " word metallic membrane to constitute filter exactly, thereby realizes the isolation between the electromagnetic wave of two polarised directions.
The utility model has made full use of existing technology, has designed technique scheme.Filter according to the technique scheme technology forms not only can carry out filtering to two mutually orthogonal linear polarised electromagnetic wave, can also guarantee higher isolation between two mutually orthogonal line polarization waves simultaneously.
The utility model design is ingenious, simple in structure, and convenient processing and debugging is mainly used in fields such as satellite communication, satellite television.
Description of drawings
Fig. 1 is the structural representation of the utility model-embodiment.
Fig. 2 is a kind of structural representation of metallic membrane among Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, a kind of double polarized filter comprises metal cavitg 1 and four metallic membranes 2, described metallic membrane 2 be shaped as rectangle, " ten " font coupling slot 4 is arranged on metallic membrane 2; This coupling slot 4 is with respect to two plane orthogonal symmetries of the filter longitudinal axis, and the shape of this coupling slot 4 is revolved around the longitudinal axis of this filter, and to turn 90 degrees the back similar to original form; Described cavity 1 is a column structure, its cross section be shaped as rectangle.On two opposing sidewalls of cavity 1, be respectively arranged with four tuning screws 3, all tuning screws 3 all extend in the cavity outside cavity, stretching into the degree of depth of cavity can regulate outside cavity, and its position is between two metallic membranes that face mutually or be arranged in the coupling slot 4 on the metallic membrane 2.
Coupling slot on the utility model cavity, metallic membrane and the metallic membrane can be arranged to the Any shape all symmetrical with respect to certain two orthogonal plane, as rectangle, circle, ellipse etc., therefore, the foregoing description only is a kind of more excellent situation of the present utility model, does not show that each structure of the present utility model only limits to rectangle.
Claims (7)
1. double polarized filter comprises cavity (1) and at least two metallic membranes (2), it is characterized in that described metallic membrane (2) is provided with coupling slot (4), and described coupling slot (4) is " ten " font coupling slot.
2. double polarized filter according to claim 1 is characterized in that, described cavity (1) is the columnar metal structure.
3. double polarized filter according to claim 1 is characterized in that, the cross section of described cavity (1) is a rectangle.
4. double polarized filter according to claim 1 is characterized in that, described metallic membrane (2) is a rectangle.
5. double polarized filter according to claim 1 is characterized in that, described cavity (1) is provided with the tuning screw (3) that extends in the cavity (1).
6. double polarized filter according to claim 5 is characterized in that, becomes to flexibly connect between described tuning screw (3) and cavity (1) wall.
7. double polarized filter according to claim 5 is characterized in that, the part that described tuning screw (3) extends in the cavity (1) is positioned at coupling slot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920299299XU CN201601202U (en) | 2009-12-21 | 2009-12-21 | Dual-polarized filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920299299XU CN201601202U (en) | 2009-12-21 | 2009-12-21 | Dual-polarized filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601202U true CN201601202U (en) | 2010-10-06 |
Family
ID=42812266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920299299XU Expired - Fee Related CN201601202U (en) | 2009-12-21 | 2009-12-21 | Dual-polarized filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201601202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117432A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Harmonic suppressor |
-
2009
- 2009-12-21 CN CN200920299299XU patent/CN201601202U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117432A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Harmonic suppressor |
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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: 20101006 Termination date: 20131221 |