CN206497969U - Frequency selecting structures and antenna house - Google Patents
Frequency selecting structures and antenna house Download PDFInfo
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- CN206497969U CN206497969U CN201720214528.8U CN201720214528U CN206497969U CN 206497969 U CN206497969 U CN 206497969U CN 201720214528 U CN201720214528 U CN 201720214528U CN 206497969 U CN206497969 U CN 206497969U
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- selecting structures
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Abstract
The utility model discloses a kind of frequency selecting structures and antenna house.The frequency selecting structures include：Multiple geometry units, along three-dimensional arrangement form three-dimensional periodic structure, wherein, each geometry unit is to include the three-dimensional structure of multiple sides, each side includes conductive layer and engraved structure, and adjacent geometry unit has public side.The frequency selecting structures are filtered using the three-dimensional periodic array structure electromagnetic wave incident to different directions.
Description
Technical field
The utility model is related to antenna technology, more particularly, to miniaturization and low-loss frequency selecting structures and day
Irdome.
Background technology
Frequency-selective surfaces (FSS) include multiple passive resonance units for being arranged in periodic array in two dimensions structure, Mei Gexie
The unit that shakes includes the conductive geometry for forming pattern, such as metal patch or hollow metal structure.By designing conductive geometry
The shape and size of structure, it is possible to achieve along the frequency selective characteristic of specific direction incident electromagnetic wave.Frequency-selective surfaces
Effect is similar to spatial filter.In antenna applications, antenna house is for example including frequency-selective surfaces, so as to allow special frequency channel
Electromagnetic wave pass through, so as to provide band logical and Out-of-band rejection function.Thus, frequency-selective surfaces can suppress inoperative frequency range
Interference, is conducive to improving antenna performance and improves gain.
The frequency selective characteristic of existing frequency-selective surfaces is related to the incidence angle of electromagnetic wave and polarised direction.Electromagnetic wave
Incidence angle be angle between the incident direction of electromagnetic wave and the normal of frequency-selective surfaces.The incidence angle of electromagnetic wave is smaller,
Then frequency selective characteristic is better.
However, in the application field of antenna house etc, expecting the electricity that filter structure can be incident to multiple different directions
Magnetic wave realizes bandpass filtering effect, therefore the filter structure of periodic array in two dimensions structure has been difficult to the need for meeting practical application
Ask.
Utility model content
In view of the above problems, problem to be solved in the utility model is to provide one kind using three-dimensional periodic array structure to not
Frequency selecting structures and antenna house that equidirectional incident electromagnetic wave is filtered.
According to one side of the present utility model there is provided a kind of frequency selecting structures, including：Multiple geometry units, institute
Multiple geometries are stated to arrange along three-dimensional arrangement period, wherein, each geometry unit is to include multiple sides
Three-dimensional structure, each side includes conductive layer and engraved structure, and adjacent geometry unit has public side.
Preferably, the multiple geometry unit also includes the hollow air that the multiple side is surrounded
Chamber.
Preferably, the shape of the multiple geometry unit is respectively cube.
Preferably, the derivative pattern for being shaped as cross frame of the engraved structure, including orthogonal two I-shaped frames,
The engraved structure is centrally positioned on cubical surface.
Preferably, the shape and size of described two I-shaped frames are identical.
Preferably, the side of the geometry unit includes medium substrate, for supporting the conductive layer.
Preferably, the medium substrate is included selected from least one of ceramics, FR4, F4B, HDPE, ABS.
Preferably, the multiple geometry unit include being respectively perpendicular to first group of three-dimensional side, second group
Side and the 3rd group of side, first group of side of the multiple geometry unit collectively form the first class frequency parallel to each other
Surface is selected, second group of side of the multiple geometry unit collectively forms the second class frequency selection table parallel to each other
Face, the 3rd group of side of the multiple geometry unit collectively forms the 3rd class frequency selection surface parallel to each other.
Preferably, the shape and size of geometry unit are selected according to predetermined working frequency and wave transparent parameter, and
The shape and size of engraved structure.
According to another aspect of the present utility model, there is provided a kind of antenna house, including above-mentioned frequency selecting structures and illiteracy
Skin, the covering covers the frequency selecting structures.
According in the frequency selecting structures of the utility model embodiment, geometry unit is respectively three-dimensional structure, and
Along three-dimensional arrangement form three-dimensional periodic array.Multiple frequency selection tables arranged in parallel are all there are in each direction
Face.The three-dimensional structure can form complete mechanical structure using self structure, without the frequency of different aspects is selected
Connector or mechanical support layer that surface links together.The frequency selecting structures include the geometry list of three-dimensional periodic array
The relevance reduction of the incidence angle and polarised direction of member, frequency selective characteristic and electromagnetic wave.Even if from all directions incoming electromagnetic
Ripple, the frequency selecting structures can obtain good frequency selective characteristic.
Brief description of the drawings
By description referring to the drawings to the utility model embodiment, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the planar structure schematic diagram of the geometry unit for frequency selecting structures；
Fig. 2 shows the dimensional structure diagram of the frequency selecting structures and its geometry unit according to prior art；
Fig. 3 shows to be shown according to the frequency selecting structures of the utility model embodiment and its stereochemical structure of geometry unit
It is intended to；
Fig. 4 shows the reflectance factor and transmission coefficient simulation result according to the frequency selecting structures of the utility model embodiment
Figure simulation result figure.
Embodiment
The utility model is more fully described hereinafter with reference to accompanying drawing.In various figures, identical element is using similar
Reference represent.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.Furthermore, it is possible to not shown
Some known parts.
It should be appreciated that when describing some structure, being referred to as being located at another layer, another region when by one layer, a region
When " above " or " top ", can refer to above another layer, another region, or its with another layer, another
Also comprising other layers or region between region.Also, if the structure overturn, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".If in order to describe located immediately at another layer, another region above scenario,
The form of presentation of " A is directly on B " or " A is on B and abuts therewith " will be used herein.
The utility model can be presented in a variety of manners, some of examples explained below.
Fig. 1 shows the planar structure schematic diagram of the geometry unit for frequency selecting structures.As described below, this is several
What construction unit 110 is used for the resonant element for constituting frequency selecting structures.
As shown in figure 1, geometry unit 110 includes conductive layer 111 and the engraved structure 112 wherein formed.Geometry knot
The shape of structure unit 110 is, for example, the square that the length of side is a, including along the first side and second side extended laterally, with
And along the 3rd side of Longitudinal extending and four side.The shape of engraved structure 112 is, for example, the derivative pattern of cross frame, example
Such as Jerusalem (Jerusalem) cross pattern, including orthogonal two I-shaped frames.The cross frame is centrally positioned in several
The inside of what construction unit 110.In this embodiment, the shape and size of two I-shaped frames are identical, and main frame is respectively along transverse direction
And Longitudinal extending.Each I-shaped frame includes linear main frame and supplementary frame.Supplementary frame is connected at the two ends of main frame with main frame, with
Main frame is vertical and by main frame decile.In Fig. 1, the length dimension of main frame is expressed as l, and width dimensions are expressed as wt, supplementary frame
Length dimension is expressed as ls, and width dimensions are expressed as w.
Fig. 2 shows the dimensional structure diagram of the frequency selecting structures and its geometry unit according to prior art.Should
Geometry unit 110 in frequency selecting structures 200 is for example formed in the metal pattern on medium substrate.
As shown in Fig. 2 frequency selecting structures 200 include the frequency-selective surfaces 210 and 220 of two aspects.Frequency is selected
Surface 210 and 220 is parallel to each other and spaced a predetermined distance from.Frequency-selective surfaces 210 and 220 respectively include medium substrate and
The multiple geometry units 110 formed thereon.The multiple geometry unit 110 is arranged in two-dimensional periodic structure.
In same frequency-selective surfaces, the conductive layer 111 of multiple geometry units 110 is adjacent to each other, forms complete conductive layer,
The engraved structure 112 of multiple geometry units 110 is spaced apart, and forms periodic engraved structure.
In this example, the frequency-selective surfaces 210 and 220 of different aspects can be fixed together using connector 230.
The connector 230 is, for example, the screw rod or carriage formed by insulating materials such as plastics.In the example of replacement, different aspects
Frequency-selective surfaces 210 and 220 between mechanical support layer can be set, the mechanical support layer be, for example, soft board substrate, preimpregnation
Expect base material, monolith substrate.Frequency-selective surfaces 210 and 220 can be bonded in mechanical support layer using additional adhesive linkage.
The frequency selective characteristic of the existing frequency-selective surfaces is related to the incidence angle of electromagnetic wave and polarised direction.Electromagnetism
The incidence angle of ripple is the angle between the incident direction of electromagnetic wave and the normal of frequency-selective surfaces.The incidence angle of electromagnetic wave is got over
Small, then frequency selective characteristic is better.
Therefore, the frequency selecting structures require that electromagnetic wave reaches first frequency-selective surfaces with predetermined incidence angle, so
Aspect is passed through after multiple frequency-selective surfaces one by one afterwards, is left from last frequency-selective surfaces.Frequency-selective surfaces
The number of plies is more, and the scope of the incidence angle of electromagnetic wave is smaller.Therefore, the frequency selecting structures use the geometry knot of periodic array in two dimensions
Structure unit, making it difficult to which incident electromagnetic wave is filtered to multiple directions, so that the need for can not meeting practical application.
Fig. 3 shows to be shown according to the frequency selecting structures of the utility model embodiment and its stereochemical structure of geometry unit
It is intended to.Geometry unit 310 in the frequency selecting structures 300 is for example formed in the metal pattern on medium substrate.
It is different from the geometry unit 110 shown in Fig. 2, according to the geometry unit 310 of the utility model embodiment
For three-dimensional structure, such as cube structure.The geometry unit 310 is included in the conduction formed on cubical six sides
Layer 311 and engraved structure therein 312.The conductive layer 311 surrounds hollow air chamber.
The material of medium substrate has multiple choices, for example ceramics, FR4, F4B (polytetrafluoroethylene (PTFE)), HDPE (high-density polyethylenes
Alkene, High Density Polyethylene), ABS (Acrylonitrile Butadiene Styrene) etc..For example, being situated between
The relative dielectric constant of matter substrate is more than 2, loss angle tangent and is less than 0.1.
Geometry unit 310 can be attached on medium substrate by modes such as printing, plating, bonding, hot pressing.Example
Such as, geometry unit 310 can be formed using the similar technique of printed circuit board (PCB) (PCB).In the printed circuit boards, medium base
The surface covering tinsel of plate, by a variety of methods such as etching, plating, carve, photoetching, electronics quarter or ion quarters to metal foil
Piece is patterned, to form the geometry unit of predetermined pattern.Etching is preferably manufacturing process, and its step is in design
After the plane pattern of good suitable geometry unit, then by etching machines, gone using the chemical reaction of solvent and metal
The foil parts beyond geometry unit predetermined pattern are removed, it is remaining to can obtain geometry unit.In order to clearly show
Go out geometry unit, medium substrate is saved in figure.
On cubical each surface, geometry unit 310 includes conductive layer 311 and the engraved structure wherein formed
312.The shape of geometry unit 310 is, for example, the square that the length of side is a, including along the first side extended laterally and the
Dual side-edge, and along the 3rd side of Longitudinal extending and four side.The shape of engraved structure 312 is, for example, spreading out for cross frame
Raw pattern, such as Jerusalem (Jerusalem) cross pattern, including orthogonal two I-shaped frames.The cross frame is occupied
In be arranged on the inside of geometry unit 310.In this embodiment, the shape and size of two I-shaped frames are identical, main frame point
Not along horizontal and vertical extension.Each I-shaped frame includes linear main frame and supplementary frame.Supplementary frame the two ends of main frame with
The connection of main frame, it is vertical with main frame and by main frame decile.In Fig. 1, the length dimension of main frame is expressed as l, and width dimensions are expressed as
Wt, the length dimension of supplementary frame is expressed as ls, and width dimensions are expressed as w.
As shown in figure 3, frequency selecting structures 300 include multiple geometry units 310, along three-dimensional arrangement form
Three-dimensional periodic structure.As described above, each geometry unit 310 is the cube that the length of side is a, including around the six of air chamber
Individual side.The side of each side extends respectively along three directions X, Y, Z perpendicular to one another.In frequency selecting structures 300,
Cycle of multiple geometry units 310 along three direction X, Y, Z repeatability arrangements is equal with cubical length of side a.Therefore,
The geometry unit 310 of arbitrary neighborhood can have a public side.
On three directions X, Y, Z each direction, frequency selecting structures 300 include multiple frequencies arranged in parallel and selected
Surface 320.By taking X-direction as an example, referring to Fig. 3, the surface of multiple frequency-selective surfaces 320 is parallel with X-direction and orientation and X
Direction is parallel, and the spacing being spaced apart is equal with length of side a.Frequency-selective surfaces 320 include medium substrate and formed thereon respectively
310 respective sides of multiple geometry units.The multiple 310 respective sides of geometry unit are arranged in two
Tie up periodic structure.In same frequency-selective surfaces, the conductive layer 311 of multiple geometry units 310 is adjacent to each other, shape
Into complete conductive layer, the engraved structure 312 of multiple geometry units 310 is spaced apart, and forms periodic engraved structure.
Periodic arrangement formation three dimensional periodic structure of multiple frequency-selective surfaces 320 in three directions X, Y, Z.
In this example, geometry unit 310 is respectively three-dimensional structure, and along three-dimensional arrangement form frequency
Select structure 300.Multiple frequency-selective surfaces arranged in parallel are all there are in each direction.The three-dimensional structure can be utilized
Self structure forms complete mechanical structure, without the connector that the frequency-selective surfaces of different aspects link together
Or mechanical support layer.
The frequency selecting structures include the geometry unit of three-dimensional periodic array, and frequency selective characteristic and electromagnetic wave enter
The relevance reduction of firing angle and polarised direction.Even if from all directions incident electromagnetic wave, the frequency selecting structures can be obtained
Good frequency selective characteristic.
It should be noted that figure 3 illustrates the frequency selecting structures of the 4*2*2 formation of geometry unit 310.Accordingly
Ground, 5 frequency-selective surfaces arranged in parallel are had in X-direction, in the Y direction with 3 parallels are respectively present in Z-direction
The frequency-selective surfaces of row.However, the utility model not limited to this.It can include on each direction of frequency selecting structures 300
The frequency-selective surfaces of more aspects, and each frequency-selective surfaces can include any number of geometry unit.
Frequency selection table can be adjusted flexibly according to the application environment and frequency selective characteristic according to reality in those skilled in the art
The number of plies in face and shape, the size and number of geometry unit.
Fig. 4 shows the reflectance factor and transmission coefficient simulation result according to the frequency selecting structures of the utility model embodiment
Figure simulation result figure.Curve S11 in figure represents reflectance factor, and curve S21 represents transmission coefficient.S21 is reflection electromagnetic wave
A kind of positive configured transmission from input to output end, represents the size of insertion loss.
The frequency selecting structures are for example with the three-dimensional structure shown in Fig. 3.Frequency selecting structures 300 are geometry units
310 along three-dimensional arrangement form three-dimensional periodic array.Geometry unit 310 is cube, and cubical side is enclosed
Around hollow air chamber.On cubical each surface, geometry unit 310 includes conductive layer 311 and wherein formed
Engraved structure 312.
In simulations, it is assumed that the cube length of side a=13mm of geometry unit 310, engraved structure 312 hangs down including two
The I-shaped frame directly intersected, the main frame length l=5.4mm of I-shaped frame, width wt=1.2mm, the supplementary frame length ls=of I-shaped frame
4mm, width w=1mm.Further, it is assumed that the thickness of conductive layer 311 is 0.018 millimeter, the relative dielectric constant of medium substrate
3.2nd, loss angle tangent 0.002, thickness is respectively 0.025 millimeter
Show for the result that the frequency selecting structures of above-mentioned parameter are emulated, it is equal when incidence wave is TE ripple and TM ripple
The effect of bandpass filter can be produced.- 10dB and wave transparent system are below in the reflectance factor S11 of 13.9~14.8GHz wave bands
S21 be above frequency selecting structures in -1dB, i.e. the present embodiment to the wave transparent frequency of TM ripples and TE ripples 13.9~
14.8GHzz scopes.
In the above description, known structural element and step are not described in detail.But this area
It will be appreciated by the skilled person that can be by various technological means, to realize corresponding structural element and step.In addition, for shape
Into identical structural element, those skilled in the art can be devised by and process as described above not fully identical side
Method.Although in addition, each embodiment is respectively described more than, but it is not intended that the measure in each embodiment can not have
It is used in combination sharply.
Embodiment of the present utility model is described above.But, the mesh that these embodiments are merely to illustrate that
, and be not intended to limit scope of the present utility model.Scope of the present utility model is limited by appended claims and its equivalent
It is fixed.Scope of the present utility model is not departed from, those skilled in the art can make a variety of alternatives and modifications, these alternatives and modifications
It should all fall within the scope of the utility model.
Claims (10)
1. a kind of frequency selecting structures, it is characterised in that including：
Multiple geometry units, the multiple geometry unit along three-dimensional periodic arrangement,
Wherein, each geometry unit is to include the three-dimensional structure of multiple sides, and each side includes conductive layer and hollow out knot
Structure, and adjacent geometry unit has public side.
2. frequency selecting structures according to claim 1, it is characterised in that the multiple geometry unit also include by
The hollow air chamber that the multiple side is surrounded.
3. frequency selecting structures according to claim 1, it is characterised in that the shape of the multiple geometry unit point
Wei not cube.
4. frequency selecting structures according to claim 1, it is characterised in that the engraved structure is shaped as cross frame
Derivative pattern, including orthogonal two I-shaped frames, the engraved structure are centrally positioned on cubical surface.
5. frequency selecting structures according to claim 4, it is characterised in that the shape and size phase of described two I-shaped frames
Together.
6. frequency selecting structures according to claim 1, it is characterised in that the side of the geometry unit includes being situated between
Matter substrate, for supporting the conductive layer.
7. frequency selecting structures according to claim 6, it is characterised in that the medium substrate include selected from ceramics,
At least one of FR4, F4B, HDPE, ABS.
8. frequency selecting structures according to claim 1, it is characterised in that the multiple geometry unit includes difference
Perpendicular to the first group of side, second group of side and the 3rd group of side of three-dimensional,
First group of side of the multiple geometry unit collectively forms the first class frequency selection surface parallel to each other, described
Second group of side of multiple geometry units collectively forms the second class frequency selection surface parallel to each other, the multiple geometry
3rd group of side of construction unit collectively forms the 3rd class frequency selection surface parallel to each other.
9. frequency selecting structures according to claim 1, it is characterised in that according to predetermined working frequency and wave transparent parameter
Select geometry unit shape and size, and engraved structure shape and size.
10. a kind of antenna house, including frequency selecting structures according to any one of claim 1 to 9 and covering, described
Covering covers the frequency selecting structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214528.8U CN206497969U (en) | 2017-03-06 | 2017-03-06 | Frequency selecting structures and antenna house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214528.8U CN206497969U (en) | 2017-03-06 | 2017-03-06 | Frequency selecting structures and antenna house |
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| CN206497969U true CN206497969U (en) | 2017-09-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736167A (en) * | 2018-04-02 | 2018-11-02 | 杭州电子科技大学 | Novel three-dimensional Wide stop bands lowpass frequency selects structure |
| CN109411894A (en) * | 2018-10-29 | 2019-03-01 | 南京师范大学 | Three-dimensional frequency is inhibited to select surface outside a kind of dual polarization broadband |
| WO2020000978A1 (en) * | 2018-06-26 | 2020-01-02 | 深圳光启尖端技术有限责任公司 | Metamaterial with three-dimensional structure |
| CN111048890A (en) * | 2018-10-12 | 2020-04-21 | 新加坡国立大学 | Antenna array for wireless energy harvesting and method of manufacturing the same |
| CN114530675A (en) * | 2022-01-24 | 2022-05-24 | 华为技术有限公司 | Filtering device, base station antenna and base station equipment |
-
2017
- 2017-03-06 CN CN201720214528.8U patent/CN206497969U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736167A (en) * | 2018-04-02 | 2018-11-02 | 杭州电子科技大学 | Novel three-dimensional Wide stop bands lowpass frequency selects structure |
| CN108736167B (en) * | 2018-04-02 | 2020-07-07 | 杭州电子科技大学 | Novel three-dimensional wide-stop-band low-pass frequency selection structure |
| WO2020000978A1 (en) * | 2018-06-26 | 2020-01-02 | 深圳光启尖端技术有限责任公司 | Metamaterial with three-dimensional structure |
| CN111048890A (en) * | 2018-10-12 | 2020-04-21 | 新加坡国立大学 | Antenna array for wireless energy harvesting and method of manufacturing the same |
| CN111048890B (en) * | 2018-10-12 | 2023-10-20 | 新加坡国立大学 | Antenna array for wireless energy harvesting and method of manufacturing the same |
| CN109411894A (en) * | 2018-10-29 | 2019-03-01 | 南京师范大学 | Three-dimensional frequency is inhibited to select surface outside a kind of dual polarization broadband |
| CN109411894B (en) * | 2018-10-29 | 2021-05-11 | 南京师范大学 | Dual-polarized broadband external suppression three-dimensional frequency selection surface |
| CN114530675A (en) * | 2022-01-24 | 2022-05-24 | 华为技术有限公司 | Filtering device, base station antenna and base station equipment |
| CN114530675B (en) * | 2022-01-24 | 2023-03-10 | 华为技术有限公司 | Filtering device, base station antenna and base station equipment |
| WO2023138434A1 (en) * | 2022-01-24 | 2023-07-27 | 华为技术有限公司 | Filtering device, base station antenna and base station apparatus |
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Effective date of registration: 20191012 Address after: 518057 2nd Floor, No. 9 Software Building, Zhongxin Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Guangqi Hezhong Technology Co., Ltd. Address before: Bantian street Shenzhen city Guangdong province 518000 Jihua Road, the new world Huasai Industrial Area No. 2, building 101 (two floor) 201 Patentee before: SHENZHEN CHAOJI DATA CHAIN TECHNOLOGY CO., LTD. |
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