CN201741777U - Metal photonic crystal filter - Google Patents
Metal photonic crystal filter Download PDFInfo
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- CN201741777U CN201741777U CN2010201200731U CN201020120073U CN201741777U CN 201741777 U CN201741777 U CN 201741777U CN 2010201200731 U CN2010201200731 U CN 2010201200731U CN 201020120073 U CN201020120073 U CN 201020120073U CN 201741777 U CN201741777 U CN 201741777U
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- photonic crystal
- filter
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- shell
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Abstract
A metal photonic crystal filter relates to the microwave technology, and comprises a shell in which a rectangular cavity is arranged, and a filter body fixedly arranged in the cavity, wherein the filter body comprises a metal photonic crystal pore plate, the pore plate has a plurality of filtering holes which are arranged in matrix, each filtering hole is internally provided with a metal column, accordingly, the metal columns also form a matrix; a rectangular waveguide slot linearly penetrates through the shell and the cavity to form a microwave channel; the direction of the metal column is vertical to the direction of the microwave channel, and the position thereof corresponds to the rectangular waveguide slot; the outlet of the rectangular waveguide slot is provided with a waveguide connecting part; and the metal photonic crystal pore plate, the metal columns and the shell are in circuit conduction. The utility model can realize band-pass filter under microwave and mm wave band, and particularly under shorter wavelength, can realize the filter of different frequency range and bandwidth through changing the size of the metal column, and has compact structure due to the matching between the IO and the traditional waveguide port.
Description
Technical field
The utility model relates to microwave technology.
Background technology
Photonic crystal is the artificial lens that material constituted that is changed by two or more refractive index cycle, along with the continuous maturation of photonic crystal technology of preparing and perfect, in 2 D photon crystal, introduce suitable defective and construct certain coupling device to form multiple photonic crystal function elements such as waveguide, resonant cavity, filter.An important application of photonic crystal is that photon is integrated, thereby the design of many dissimilar photon crystal devices and make and mainly concentrate on nanometer scale, i.e. optical band.But in actual applications because the restriction of processing technology, the conventional waveguide mode filter be difficult in submillimeter region and more short wavelength range realize bandpass filtering.Utilizing photonic crystal characteristics design band pass filter then is an effective way, compares with photon dielectric crystal, and metal photonic crystal more just has good band gap properties and local characteristic at periodicity.
The utility model content
Technical problem to be solved in the utility model is, overcomes existing traditional waveguide filter in submillimeter region, even more the short wavelength realizes the difficulty of bandpass filtering providing a kind of metal photonic crystal filter, can realize the bandpass filtering of short wavelength range.
The technical scheme that the utility model solve the technical problem employing is, the metal photonic crystal filter is established the shell of cuboid shape cavity in comprising, the cavity internal fixation is provided with filter main body; Filter main body comprises the metal photonic crystal orifice plate, and orifice plate has the filtering hole of a plurality of arranged, is provided with metal column in each filtering hole, and is corresponding, and metal column forms arranged; The rectangular waveguide slots straight line runs through shell and cavity forms microwave channel; The direction of metal column is perpendicular to the microwave channel direction, and the position is corresponding with rectangular waveguide slots; The rectangular waveguide slots exit is provided with the waveguide connector; Metal photonic crystal orifice plate, metal column and shell are circuit turn-on.
Further, shell is made of two cover plates up and down.Filter main body is by two metal photonic crystal orifice plates, interlayer and metal columns constitute up and down; Interlayer is positioned at beyond the metal column matrix area, the height and the narrow limit consistent size of rectangular waveguide slots.Metal photonic crystal orifice plate 5 is fixed in the cavity by base and shop bolt.
Further, on the microwave channel direction, according to position on metal photonic crystal orifice plate 5, mind-set two ends therefrom, the filtering hole is divided into three grades of C, D, E, and level, the vertical cycle of filtering hole matrix are 1.16mm; E hole back gauge is 0.58mm; C, D, E bore dia are respectively 0.54mm, 0.2mm, 0.24mm.Described metal column by laser welding between two metal photonic crystal orifice plates.
The beneficial effects of the utility model are, can be in microwave and millimere-wave bands, and especially more the short wavelength realizes bandpass filtering, change the filtering that the metal column size can realize different frequency scope and bandwidth, and input and output cooperates compact conformation with the conventional waveguide port.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the internal structure vertical view of a kind of structure of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is embodiment 1 a metal photonic crystal defect sturcture schematic diagram.
Fig. 5 is the A-A cutaway view of Fig. 4.
1. filter lower covers among the figure, 2. filter upper cover plate, 3. metal photonic crystal orifice plate interlayer, 4. metal photonic crystal orifice plate base, 5. metal photonic crystal orifice plate, 6. shop bolt, 7. rectangular waveguide slots, 8. cavity, 9. metal column, 10. waveguide flange, C, D, E hole are the metal column welding hole, and the H hole is a metal photonic crystal orifice plate shop bolt installing hole, and the J hole is a filter cover plate shop bolt installing hole up and down, the F hole is a metal photonic crystal orifice plate screw mounting hole, and the hole that all the other do not identify on the figure is and connects the filter M3 screw mounting hole of cover plate up and down.
Embodiment
Establish the shell of cuboid shape cavity in metal photonic crystal filter of the present utility model comprises, cavity 8 internal fixation are provided with filter main body; Filter main body comprises the metal photonic crystal orifice plate, and orifice plate has the filtering hole of a plurality of arranged, is provided with metal column in each filtering hole, and is corresponding, and metal column forms arranged; The rectangular waveguide slots straight line runs through shell and cavity forms microwave channel; The direction of metal column is perpendicular to the microwave channel direction, and the position is corresponding with rectangular waveguide slots; The rectangular waveguide slots exit is provided with the waveguide connector; Metal photonic crystal orifice plate, metal column and shell are circuit turn-on.
Filter main body can also can adopt other fixed form by base 4 and the dowel fixes position corresponding with waveguide slot in cavity.
Specific embodiment is shown in Fig. 1～3, and filter cover plate up and down is the cuboid that has blind hole, and the assembling back forms cavity 8.Filter main body is by two metal photonic crystal orifice plates, interlayer and metal columns constitute up and down; Interlayer is positioned at beyond the metal column matrix area, the height and the narrow limit consistent size of rectangular waveguide slots.
In embodiment illustrated in fig. 4, C, D, E hole horizontal, vertical direction arrangement cycle are a, a=1.16mm, and this size remains unchanged.E hole back gauge is a/2.C, D, E bore dia are respectively 0.54mm, 0.2mm, 0.24mm.Change lattice constant a and C, D, E bore dia, can regulate the filter passband scope.The implication in described cycle is, when identical construction unit occurs repeatedly along straight line is equidistant, determines a reference point in each unit same position, and the distance of the reference point of two adjacent unit is exactly an one-period.For example, a plurality of circular holes of equidistant linear array, the distance of center circle of its adjacent two circular holes is from being exactly a length cycle.
In embodiment illustrated in fig. 5, filter main body is by two metal photonic crystal orifice plates (SUS-304), metal photonic crystal orifice plate interlayer and metal column constitute up and down.Narrow Wall of Waveguide limit consistent size among metal photonic crystal orifice plate band height and the embodiment 1, the metal photonic crystal orifice plate is connected with the M1.6 screw by pin with metal photonic crystal orifice plate interlayer.Between two metal photonic crystal orifice plates, filter main body and waveguide enclosure have good electrical contact to metal column by laser welding.
The utility model can be used as filter and uses separately, also can constitute duplexer, multiplexer, synthesizer etc., is widely used in military and civilian fields such as the electronic system of each microwave band, particularly radar, missile guidance, communication.
Claims (5)
1. the metal photonic crystal filter is characterized in that, establishes the shell of cuboid shape cavity (8) in comprising, cavity (8) internal fixation is provided with filter main body; Filter main body comprises metal photonic crystal orifice plate (5), and orifice plate (5) has the filtering hole of a plurality of arranged, is provided with metal column (9) in each filtering hole, and is corresponding, and metal column forms arranged; Rectangular waveguide slots (7) straight line runs through shell and cavity (8) forms microwave channel; The direction of metal column is perpendicular to the microwave channel direction, and the position is corresponding with rectangular waveguide slots (7); Rectangular waveguide slots (7) exit is provided with the waveguide connector; Metal photonic crystal orifice plate (5), metal column and shell are circuit turn-on.
2. metal photonic crystal filter as claimed in claim 1 is characterized in that, shell is made of two cover plates up and down.
3. metal photonic crystal filter as claimed in claim 1 is characterized in that, filter main body is by two metal photonic crystal orifice plates, interlayer (3) and metal columns constitute up and down; Interlayer (3) is positioned at beyond the metal column matrix area, the height and the narrow limit consistent size of rectangular waveguide slots (7).
4. metal photonic crystal filter as claimed in claim 1 is characterized in that, metal photonic crystal orifice plate (5) is fixed in the cavity by base and shop bolt.
5. metal photonic crystal filter as claimed in claim 3 is characterized in that, described metal column by laser welding between two metal photonic crystal orifice plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201200731U CN201741777U (en) | 2010-02-26 | 2010-02-26 | Metal photonic crystal filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201200731U CN201741777U (en) | 2010-02-26 | 2010-02-26 | Metal photonic crystal filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201741777U true CN201741777U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201200731U Expired - Fee Related CN201741777U (en) | 2010-02-26 | 2010-02-26 | Metal photonic crystal filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201741777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219572A (en) * | 2013-04-18 | 2013-07-24 | 南京大学 | Microwave band-pass filter |
| CN106772740A (en) * | 2016-12-02 | 2017-05-31 | 兰州大学 | A kind of photonic crystal filters and its application for thermo-optical cell |
| CN107968240A (en) * | 2017-12-29 | 2018-04-27 | 苏州大学 | A kind of adjustable plasma photon crystal frequency-selecting filter |
| CN114843724A (en) * | 2021-02-02 | 2022-08-02 | 中国科学院上海微系统与信息技术研究所 | Photonic crystal double-band-pass filter |
-
2010
- 2010-02-26 CN CN2010201200731U patent/CN201741777U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219572A (en) * | 2013-04-18 | 2013-07-24 | 南京大学 | Microwave band-pass filter |
| CN103219572B (en) * | 2013-04-18 | 2015-10-28 | 南京大学 | Microwave band-pass filter |
| CN106772740A (en) * | 2016-12-02 | 2017-05-31 | 兰州大学 | A kind of photonic crystal filters and its application for thermo-optical cell |
| CN107968240A (en) * | 2017-12-29 | 2018-04-27 | 苏州大学 | A kind of adjustable plasma photon crystal frequency-selecting filter |
| CN107968240B (en) * | 2017-12-29 | 2020-03-17 | 苏州大学 | Adjustable plasma photonic crystal frequency-selecting filter |
| CN114843724A (en) * | 2021-02-02 | 2022-08-02 | 中国科学院上海微系统与信息技术研究所 | Photonic crystal double-band-pass filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20180226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |