CN106384863B - A kind of all dielectric frequency-selective surfaces - Google Patents
A kind of all dielectric frequency-selective surfaces Download PDFInfo
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- CN106384863B CN106384863B CN201611004411.3A CN201611004411A CN106384863B CN 106384863 B CN106384863 B CN 106384863B CN 201611004411 A CN201611004411 A CN 201611004411A CN 106384863 B CN106384863 B CN 106384863B
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- ball
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- selective surfaces
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
Abstract
The invention discloses a kind of all dielectric frequency-selective surfaces, it is made using dielectric material, it is to carry out array structure made of unit extensions in three-dimensional space as multiple hexahedral elements, the hexahedral element of the array structure includes eight cylindrical bars of the corner ball in eight Angle Positions of cube, the center ball of the center in cube and connection corner ball and center ball, the big ball structures such as the corner ball of eight Angle Positions of the hexahedral element in the array structure is public by adjacent hexahedral element institute, and corner ball and center ball are.The present invention is made using dielectric material, electrical performance is to realize frequency selective characteristic in microwave section, and structure design according to the present invention carries out the design on period frequency selection surface using a variety of dielectric materials, it is different according to the selectivity of dielectric material simultaneously, make up the deficiency of metal structure.
Description
Technical field
The present invention relates to frequency-selective surfaces design fields, more particularly relate to a kind of all dielectric frequency selection table
Face.
Background technique
Frequency-selective surfaces (Frequency Selective Surface, FSS) are that have filter action to electromagnetic wave
Periodic structure.In general, typical frequency-selective surfaces are: being periodically arranged the patch-type of metal unit and in metal
The aperture type of periodical aperture on screen.Major part frequency-selective surfaces are all based on Metal Structure Design, metal structure now
Though have many advantages, such as, inoxidizability, it is corrosion-resistant and in terms of still have the disadvantage.
Summary of the invention
The purpose of the present invention is to provide a kind of all dielectric frequency-selective surfaces, and the frequency to make up metal structure selects
Deficiency existing for surface.
The invention is realized in this way a kind of all dielectric frequency-selective surfaces, are made using dielectric material, it is by more
A hexahedral element carries out array structure made of unit extensions in three-dimensional space, and the hexahedral element of the array structure includes place
In the corner ball of eight Angle Positions of cube, center in cube center ball and connection corner ball and
Eight cylindrical bars of center ball, the corner ball of eight Angle Positions of the hexahedral element in the array structure is by adjacent six
The big ball structures such as body unit institute in face is public, and corner ball and center ball are.
Preferably, the structure size of hexahedral element requires as follows:
0.2mm≤R≤10cm, 0.1mm≤d≤8cm, 0.1mm≤r≤5cm.
Preferably, dielectric material used is selected from polylactic acid, ABS plastic or photosensitive resin 3D printing dielectric materials.
Preferably, the dielectric constant of dielectric material used is less than one thousandth in 3-5, dielectric loss.
Compared with the existing technology, the beneficial effects of the present invention are:
The present invention provides a kind of all dielectric frequency-selective surfaces, are made using dielectric material, have a kind of completely new
Structure, electrical performance is to realize frequency selective characteristic in microwave section, and structure according to the present invention design is using more
Kind of dielectric materials carry out the design on period frequency selection surface, while different according to the selectivity of dielectric material, make up
The deficiency of metal structure.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of all dielectric frequency-selective surfaces schematic diagram based on mechanical Meta Materials provided in an embodiment of the present invention；
Fig. 2 is hexahedral element of embodiment of the present invention structural schematic diagram；
Fig. 3 is the structure size schematic diagram of hexahedral element of the embodiment of the present invention；
Fig. 4 is that the embodiment of the present invention carries out frequency selective characteristic simulation result diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of all dielectric frequency-selective surfaces provided in an embodiment of the present invention, using low-k 3D printing material into
Row production, the 3D printing material of low-k used are in dielectric materials more mature in existing 3D printing material
Polylactic acid (PLA), ABS plastic or photosensitive resin, in 3-5, dielectric loss is less than the dielectric constant of these dielectric materials used
One thousandth.As shown in Figure 1, all dielectric frequency-selective surfaces are to carry out unit expansion in three-dimensional space by multiple hexahedral elements
Array structure made of exhibition, as shown in Fig. 2, the hexahedral element of the array structure includes the angle in eight Angle Positions of cube
Portion's ball, center in cube center ball and connect eight cylindrical bars of corner ball and center ball,
The corner ball of eight Angle Positions of the hexahedral element in the array structure is public by adjacent hexahedral element institute, corner circle
Ball and center ball such as are at the big ball structure.
The structure size of hexahedral element requires following (as shown in Figure 3):
0.2mm≤R≤10cm, 0.1mm≤d≤8cm, 0.1mm≤r≤5cm.
A kind of all dielectric frequency-selective surfaces provided in an embodiment of the present invention, are made using dielectric material, have one
The completely new structure of kind, electrical performance are to realize frequency selective characteristic in microwave section, and structure according to the present invention designs
The design on period frequency selection surface is carried out using a variety of dielectric materials, while not according to the selectivity of dielectric material
Together, the deficiency of metal structure is made up.
It is described in detail combined with specific embodiments below.
Embodiment 1
Due to dielectric material can arbitrarily replace without influence Meta Materials mechanical performance, we using currently compared with
The all dielectric frequency-selective surfaces of low dielectric material are printed for accurately 3D printing technique.Polylactic acid is a kind of with preferable plasticity
3D printing material.This all dielectric of poly-lactic acid material is less as the research of frequency-selective surfaces.In particular for reality
The research of existing frequency-selective surfaces is even more rarely seen.We send out about the research of the frequency-selective surfaces of 3D printing low dielectric material structure
It is existing: there is preferable performance based on the low Jie's frequency-selective surfaces of all dielectric that 3D printing is designed.Importantly, as one kind
Low dielectric material, electromagnetic wave can be good at transmissive, but the frequency-selective surfaces that we design but have reflection electricity
The characteristic of magnetic wave, and it is anti-oxidant and in terms of have potential application.
Specific step is as follows:
(1) it determines designing material, since this example uses polylactic acid, it is normal dielectric need to be carried out to this material of polylactic acid
The test of the electrical properties such as number, loss.We have found that the dielectric constant of this material is about 3 or so, loss is very small can be thousand
/ mono- or less.
(2) all dielectric frequency-selective surfaces based on poly-lactic acid material are designed using dielectric parameter and CST software.Due to making
With 3D printing technique, therefore three-dimensional lattice structure is utilized herein.In addition, polylactic acid belongs to low dielectric material, do not have usually to electromagnetic wave
There is inhibition, therefore our structure design will allow this frequency-selective surfaces to have the effect of hindering electromagnetic wave.
(3) while realizing frequency-selective surfaces, the design concept of mechanics Meta Materials is added.Cellular construction is adjusted
It is whole to optimize the mechanical advantage for making it have ultra-light ultra-strong.
(4) due to devising three-dimensional structure, the relationship of multilayer and single layer is related to.Pass through theoretical analysis and calculation, discovery
Certain mechanical properties can be equivalent, thus our frequency-selective surfaces no matter be designed to single-layer or multi-layer all and have it is excellent
Mechanical property.Therefore it can change the regulating effect to electromagnetic wave by changing the number of plies of frequency-selective surfaces but not change
Become its Equivalent Mechanical performance.
(5) sample making is carried out using MakerBot Replicator23D printer.Due to electric property and mechanical property
Sample is printed to different sizes to meet different surveys to sample requirement difference, therefore when printing by the test macro of energy
Test instrument (test equipment is international model).
(6) printed sample is carried out removing the post-processings processing such as printing backing material.
(7) frequency selective characteristic performance test is carried out to sample using vector network analyzer, uses INSTRON 3382
Sample mechanical property is tested.Compression experiment uses ISO 604-2002 standard, and three-point bending test uses ASTM:C393
Standard.
Frequency choosing is carried out using CST Microwave Studio software to all dielectric frequency-selective surfaces being made
Characteristic Simulation is selected, obtained S parameter, as shown in figure 4, as can be seen from Figure 4 in 16.09-16.4GHz and 17.11-
17.36GHz shows that all dielectric frequency-selective surfaces show as having frequency selective characteristic in microwave section there are two stopbands.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (4)
1. a kind of all dielectric frequency-selective surfaces, which is characterized in that be made using dielectric materials, be by multiple hexahedrons
Unit carries out array structure made of unit extensions in three-dimensional space, and the hexahedral element of the array structure includes being in cube
The corner ball of eight Angle Positions, the center ball of center in cube and connection corner ball and center ball
Eight cylindrical bars, the corner ball of eight Angle Positions of the hexahedral element in the array structure is by adjacent hexahedral element
The big ball structures such as institute is public, and corner ball and center ball are.
2. a kind of all dielectric frequency-selective surfaces as described in claim 1, which is characterized in that the structure size of hexahedral element
It is required that as follows:
0.2mm≤R≤10cm, 0.1mm≤d≤8cm, 0.1mm≤r≤5cm；
R is indicated: the radius of ball structure；
D is indicated: arest neighbors ball structure centre distance；
R is indicated: the radius of the thin bar of connection ball structure.
3. a kind of all dielectric frequency-selective surfaces as described in claim 1, which is characterized in that dielectric materials used are selected from poly-
Lactic acid, ABS plastic or the low dielectric materials of photosensitive resin 3D printing.
4. a kind of all dielectric frequency-selective surfaces as described in claim 1, which is characterized in that the dielectric of dielectric materials used
Constant is less than one thousandth in 3-5, dielectric loss.
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| CN201611004411.3A CN106384863B (en) | 2016-11-15 | 2016-11-15 | A kind of all dielectric frequency-selective surfaces |
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| CN201611004411.3A CN106384863B (en) | 2016-11-15 | 2016-11-15 | A kind of all dielectric frequency-selective surfaces |
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| CN106384863B true CN106384863B (en) | 2019-01-22 |
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| CN108336502B (en) * | 2018-04-09 | 2020-10-02 | 南京邮电大学 | All-dielectric reflection type dual-band polarization converter of ship anchor structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272216A (en) * | 2015-10-13 | 2016-01-27 | 中国人民解放军空军工程大学 | Design method of reconfigurable metamaterial-based all-dielectric FSS (frequency selective surface) |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272216A (en) * | 2015-10-13 | 2016-01-27 | 中国人民解放军空军工程大学 | Design method of reconfigurable metamaterial-based all-dielectric FSS (frequency selective surface) |
Non-Patent Citations (4)
| Title |
|---|
| "3D frequency selective surfaces with close band spacing";saidatul norlyana azemi et al;《2012 AISA PACIFIC MICROWAVE CONFERENCE PROCEEDINGS》;20121207;全文 |
| "3-D Printed all-dielectric frequency selective surface with large bandwidth and field of view";Jay H.Barton et al;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20150107;第63卷(第3期);第1032-1039页 |
| "Reconfigurable all-dielectric metamaterial frequency selective surface based on high-permittivity ceramics";LIYANG LI ET AL;《SCIENTIFIC REPORTS》;20160407;全文 |
| "一种高增益强定向波导缝隙天线";郑月军等;《空军工程大学学报（自然科学报）》;20141031;第15卷(第5期);第73-77页 |
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