CN207793519U - The frequency of X-band communication selects textile - Google Patents
The frequency of X-band communication selects textile Download PDFInfo
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- CN207793519U CN207793519U CN201721638545.0U CN201721638545U CN207793519U CN 207793519 U CN207793519 U CN 207793519U CN 201721638545 U CN201721638545 U CN 201721638545U CN 207793519 U CN207793519 U CN 207793519U
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Abstract
The utility model is related to a kind of frequencies of X-band communication to select textile, which is to constitute periodic structure by conductive region and non-conducting areas；The non-conducting areas is not connected to mutually, and the non-conducting areas is constituted together with corresponding conductive structure using circular ring shape, the sub- nonconductive structures of square or Jerusalem and formed circular ring shape, square or Jerusalem shape periodic structure unit.The utility model passes through years of researches and experiment, based on stringent theoretical calculation, sample preparation verification and fine structure design, it proposes alternative by X-band signal, the other frequency electromagnetics of cut-off, easily prepared textile, and it is further proposed that by the textile application in communication tent, satisfaction needs the demand that the tent with shielding protection performance or wall textile etc. communicate X-band, and the effective protection dangerous caused by possible to other electromagnetic waves.
Description
Technical field
The utility model is the X about a kind of selectively permeable X-band signal of communication, the other frequency electromagnetics of cut-off
The frequency of band communication selects textile, is related to field of fabric producing technology.
Background technology
The frequency-selective surfaces (FSS) for generally forming the conductive unit of specific shape or non-conducting unit periodic arrangement,
Can selectively by certain frequency electromagnetics, by end the structures of other frequency electromagnetics, in communication window, antenna, radar
The numerous areas such as reflecting surface, filter obtain important application, are the research hotspots of electromagnetism profession.Currently, frequency-selective surfaces
Research and prepare be limited to rigid material, for example open on a metal plate in the enterprising row metal patch of rigid media or periodically
Hole, formation have the shortcomings that matter is hard, processing difficulties, are not easy MULTILAYER COMPOSITE.It is usually false in order to obtain good frequency selective characteristic
It is set as array periodic structure on infinity plane, i.e. the periodicity of periodic structure wants enough, can avoid the unfavorable of edge
It influences.In addition, the frequency selective characteristic of curved surface periodic structure is increasingly complex, it is more prone to prepare on planar materials and realizes.
For the textile material with function solenoid, existing research is more to concentrate on conduction, dielectric, antistatic, electromagnetic screen
Cover etc., mostly by integrally carrying out top finish, chemical plating, magnetron sputtering or with electro-magnetic screen function to fabric
Fiber process achievees the purpose that bulk shielding electromagnetic wave at fabric.It applies lintel Chinese parasol tree et al. and proposes textile electromagnetism and electromagnetism weaving
Product exploitation Research Thinking the periodic structure of frequency-selective surfaces is used for reference by metallized fabrics technology, will such as square,
The metallic conduction or non-conductive medium part, cyclic array of the shapes such as circle, Jerusalem, dipole are distributed in medium and knit
Object or conductive fabric surface etc. are, it can be achieved that electromagnetic wave leads to the frequency selectivity of textile material thoroughly, and proposes basic feasible solution
Preparation for processing, this method propose rough preparation method and feasible basic principle, but the tool of frequency-selective surfaces
Body design, selection, application requirement etc. are all extremely complex problem in science.
It is also needed for specific frequency and demand in order to successfully develop the frequency met the requirements selection logical textile material thoroughly
Carefully study the following aspects：1) design cycle planform is needed：Common periodic structure has four major class, including ring
Shape, center connection shape, solid type, combined etc., different structure shape needs to be prepared using different methods, and is suitble to spy
Fixed purposes, for example, annular periodic structure is not suitable for carrying out direct etching on conductive base, solid shape periodic structure is uncomfortable
Close low-frequency resonant point etc..2) calculating cycle structure size is needed：On the one hand, for some specific frequency, different shape institute is right
There are significant differences for the size answered, to influence practical performance；On the other hand, each structure size of periodic structure corresponds to different
Meaning cannot arbitrarily be chosen, and portion size, which crosses conference, leads to graing lobe, or be easy to happen deformation, generate curved surface influence, too small to lead
Cause processing difficulties etc..3) it needs to consider conductive base and non-conductive substrate：Difference, the difference of current-carrying part conductivity of base material are equal
It can lead to the difference of resonant frequency.4) necessary simulation theory calculates the combination with practical experience：Due to structure and size and base material
Combination it is ever-changing, in order to develop the suitable, material with particular resonance frequency point, on known experiential basis, combine
Necessary theoretical calculation is essential.
Military field X-band is that radar communication often uses wave band, in 8~12GHz ranges.In general, electromagnetic interference in order to prevent,
Existing tent mostly uses loomage, by the reflection to electromagnetic wave, is all carried out to all frequency electromagnetics in shielding wave band
Blocking, has not only filtered unwanted signals, has also blocked receiving and need signal.Therefore, it is necessary to develop electromagnetic wave selectivity logical account thoroughly
Paulin ends the interference signal for filtering other frequency ranges or harm to realize that X-band communicates.Clearly for the selection of specific frequency
Property lead to thoroughly, need based on stringent theoretical calculation and experimental verification, and select suitable periodic structure, there is more accurate week
Phase structure size and distribution, mating suitable specific preparation method etc.；And in application aspect, in order to ensure structure periodicity and
Flatness, some particular/special requirements.
Invention content
In view of the above-mentioned problems, the purpose of this utility model be to provide one kind can it is alternative by X-band electromagnetic signal,
End the textile of other frequency electromagnetics.
To achieve the above object, the utility model takes following technical scheme：A kind of frequency selection weaving of X-band communication
Product, which is characterized in that the textile is to constitute periodic structure by conductive region and non-conducting areas；The non-conducting areas is mutually not
Connection, the non-conducting areas is using circular ring shape, the sub- nonconductive structures of square or Jerusalem, with corresponding conductive structure one
It rises to constitute and forms circular ring shape, square or Jerusalem shape periodic structure unit；Each circular ring shape periodic structure unit is
The length of side be D square area, it is described square with region be internally provided with outside diameter d, internal diameter d-2a the non-conductive knot of circular ring shape
Structure, the interior circular ring shape nonconductive structures remainder that removes of the square area is conductive structure, wherein and D is 10~16mm,
D is 9~14mm, and a is 1~3mm；Several described circular ring shape periodic structure cell arrays arrange to form circular ring shape periodic structure；
Each square periodic structure unit is the square area that the length of side is D, and the square area is internally provided with the length of side
For the square nonconductive structures of d, the interior removing of the square area square nonconductive structures remainder is to lead
Electric structure, wherein D is 24~26mm, and d is 8~9mm；Several described square periodic structure cell arrays arrange to be formed just
Rectangular periodic structure；Each Jerusalem shape periodic structure unit is the square area that the length of side is D, the square region
Domain is internally provided with the sub- nonconductive structures in Jerusalem, and the sub- nonconductive structures in Jerusalem are removed in the square area
Rest part is conductive structure, and Jerusalem is the right-angled intersection region that orthogonal setting width is a and length is 2d,
And four ends in the right-angled intersection region are provided with and respectively communicated with the rectangular area that width is a and length is b, wherein D
It is 6~12mm for 14~17mm, d, a is 1~3mm, and b is 2~6mm；Several described Jerusalem shape periodic structure unit battle arrays
Row arrangement forms Jerusalem shape periodic structure.
Further, the conductive region be transfer, coating or plating metal layer, the metal layer include silver, copper,
The composite coating or coating of the compound one or more metals of zinc, aluminium, iron nickel, cupro-nickel；The metal layer can also use metal
Or metalized fibers yarn weaving forms.
Further, the non-conducting areas is conventional textile, and the conventional textile is by cotton, fiber crops, hair or silk structure
At textile；Or the textile being made of terylene, polyamide fibre, acrylic, polypropylene fibre or polyvinyl；Or by UHMWPE, aramid fiber or gather
All kinds of textiles that acid imide is constituted；Or the blended or interwoven textile of aforementioned each fiber.
Further, the conductivity of the conductive region is not less than 104S/m。
The utility model has the following advantages due to taking above technical scheme：1, the utility model passes through for many years
Research and experiment propose that alternative passes through X based on stringent theoretical calculation, sample preparation verification and fine structure design
Band signal, the other frequency electromagnetics of cut-off, easily prepared textile, and it is further proposed that by the textile application in communication
Tent, satisfaction need the demand that the tent with shielding protection performance or wall textile etc. communicate X-band, and to other
Dangerous effective protection caused by electromagnetic wave is possible.2, the utility model can get the other electromagnetic wave harms of shielding but not shadow
Ring lightweight, flexible textile and the communication tent in the wave band of a certain specific communication frequency communication in X-band.3, this practicality
It is novel that frequency selection textile is prepared for using light flexible textile as base material, it avoids metal frequency-selective surfaces and is not easy altogether
Shape, secondary operation and the problems such as compound；Metallisation is integrally applied with conventional electromagnetic shielding textile or there is certain electric conductivity
It compares, which only has the current-carrying part of locality so that the textile not only there is frequency to select permeability, also have
There are better permeability and comfort property；The textile periodic structure uses easily prepared circular ring shape, square or road
Hail nonconductive structures unit is spread, processing method is simple, and can meet higher requirement on machining accuracy.
Description of the drawings
Fig. 1 is the structural schematic diagram of the textile of the utility model, and (a) is the textile knot with circular ring shape periodic structure
Structure schematic diagram (b) has the textile constructions schematic diagram of square periodic structure, is (c) with Jerusalem shape periodic structure
Textile constructions schematic diagram；
Fig. 2 is the utility model specific shape periodic structure cell schematics, and (a) illustrates for circular ring shape periodic structure unit
Figure, (b) is square periodic structure cell schematics, is (c) Jerusalem shape periodic structure cell schematics；
Fig. 3 is the ELECTROMAGNETIC REFLECTION coefficient curve of 1 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB；
Fig. 4 is the ELECTROMAGNETIC REFLECTION coefficient curve of 2 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB；
Fig. 5 is the ELECTROMAGNETIC REFLECTION coefficient curve of 3 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB；
Fig. 6 is the ELECTROMAGNETIC REFLECTION coefficient curve of 4 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB；
Fig. 7 is the ELECTROMAGNETIC REFLECTION coefficient curve of 5 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB；
Fig. 8 is the ELECTROMAGNETIC REFLECTION coefficient curve of 6 textile of the utility model embodiment, and abscissa is Freq (frequency), single
Position is GHz, ordinate Reflection Coefficient (reflectance factor), unit dB.
Specific implementation mode
Come to carry out detailed description to the utility model below in conjunction with attached drawing.It should be appreciated, however, that attached drawing is provided only
More fully understand the utility model, they should not be interpreted as limitations of the present invention.
As shown in Figure 1, the frequency of X-band provided by the utility model communication selects textile, by conductive region and non-lead
The periodic structure that electric region is constituted, wherein non-conducting areas part is not connected to mutually, and periodic structure is by with specific structure and size
Figure constitution, the periodic structure of the utility model uses circular ring shape, square or Jerusalem shape structure.
As shown in Fig. 2 (a), circular ring shape periodic structure unit is made of conductive region 1 and 3, circular ring shape non-conducting areas 2.
Each complete circular ring shape periodic structure unit is the square area that the length of side is D, and square area is internally provided with outside diameter d, interior
The circular ring shape nonconductive structures 2 of diameter d-2a, the interior remaining area 1 for removing circular ring shape nonconductive structures 2 of square area and 3 is
For conductive structure, wherein D is 10~16mm；D is 9~14mm；A is 1~3mm.Several circular ring shape periodic structure cell arrays
Arrangement forms circular ring shape periodic structure.
As shown in Fig. 2 (b), square periodic structure unit is made of conductive region 1 and square non-conducting areas 2.Often
One complete square periodic structure unit is the square area that the length of side is D, and it is d's that square area, which is internally provided with the length of side,
Square nonconductive structures 2, interior 2 remaining area 1 of square nonconductive structures that removes of square area is conductive structure, wherein D
For 24~26mm；D is 8~9mm.Several square periodic structure cell arrays arrange to form square periodic structure.
As shown in Fig. 2 (c), Jerusalem periodic structure unit is by the sub- non-conducting areas of conductive region 1 and Jerusalem 2
It constitutes, complete Jerusalem shape periodic structure unit is the square area that the length of side is D, and square area is internally provided with road
Spreading hail nonconductive structures 2, the remaining area 1 that square area removes the sub- nonconductive structures in Jerusalem 2 is conductive structure,
In, D is 14~17mm, the decussation region that the width of the orthogonal setting of Jerusalem is a and length is 2d, and cross
It is a that four ends of intersection region, which are respectively arranged with width, and length is the rectangular area of b, and d is 6~12mm, and a is 1~3mm, b
For 2~6mm.Several Jerusalem periodic structure cell arrays arrange to form Jerusalem periodic structure.
In a preferred embodiment, conductive region be transfer, coating or plating metal layer, metal layer include silver,
The composite coating or coating for one or more metals such as copper, zinc, aluminium, iron nickel, cupro-nickel be compound；Metal layer can also be metal or gold
Belong to chemical fibre dimension yarn weaving to form.
In a preferred embodiment, non-conducting areas is conventional textile, i.e., by all kinds of days such as cotton, fiber crops, hair, silk
Either all kinds of common chemical fibres such as terylene, polyamide fibre, acrylic, polypropylene fibre, polyvinyl or UHMWPE, aramid fiber, polyamides are sub- for right fiber
All kinds of textiles that the high performance fibers such as amine or aforementioned all kinds of fiber blends or intertexture are constituted.
In a preferred embodiment, the conductivity of conductive region is 104S/m or more.
The utility model also provides the preparation method of the frequency selection textile of X-band communication, in non-conductive textile base
On body, local chemical plating gold stamping using orange cold foil or magnetron sputtering, conductive coating stamp mode are tied according to the designed period
Structure and size requirement, by the current-carrying part of periodic structure coated on textile matrix；Or it is adopted on conductive spinning product matrix
Mode is scribed with laser cutting, computer, is required according to designed periodic structure (not being suitable for annular periodic structure) and size,
The non-conductive section of periodic structure is cut away；The periodic structure being made of conductive region and non-conducting areas is obtained as a result,
Cell array forms alternative by X-band electromagnetic signal, the textile of the other frequency electromagnetics of cut-off.
In a preferred embodiment, non-conductive textile matrix refers to by all kinds of natural fibres such as cotton, fiber crops, hair, silk
Tie up the either all kinds of ordinary chemical fibers such as terylene, polyamide fibre, acrylic, polypropylene fibre, polyvinyl or UHMWPE, aramid fiber, polyimides etc.
All kinds of textiles that high-performance fiber or aforementioned all kinds of fiber blends or intertexture are constituted do not have electric conductivity.
In a preferred embodiment, orange cold foil is gold stamping, refers to using periodic structure as flower pattern, on gilding press pressure roller
Periodic structure flower pattern is cut out, cured gold stamping slurry on orange cold foil is transferred on textile matrix by gravure printing mode；
Or according to periodic structure flower pattern, halftone is made, it will be in gold stamping slurry wire mark system to textile matrix.Gold stamping slurry has certain lead
Electrically, it the cycle structure array being made of conductive region and non-conducting areas thereby is achieved forms alternative and pass through X-band
The textile of electromagnetic signal, the other frequency electromagnetics of cut-off.
In a preferred embodiment, local chemical plating or magnetron sputtering refer to being required according to periodic structure and size,
By the non-conducting areas on textile matrix into line mask, chemical plating or magnetron sputtering are then carried out, obtains conductive region, thus
It obtains the periodic structure cell array being made of conductive region and non-conducting areas and is formed and alternative believed by X-band electromagnetism
Number, the textiles of the other frequency electromagnetics of cut-off.
In a preferred embodiment, conductive coating stamp refers to designing cylinder according to periodic structure and size requirement
Or PLATE SCREAM PRINTING spends roller, will contain the conductive powder bodies coating such as copper powder, silver powder, aluminium powder or copper-clad silver powder, and be printed on textile matrix
On, the periodic structure cell array being made of conductive region and non-conducting areas thereby is achieved and form alternative by X waves
The textile of section electromagnetic signal, the other frequency electromagnetics of cut-off.
In a preferred embodiment, conductive spinning product refers to that surface conductivity is not less than 104The textile of S/m.
In a preferred embodiment, laser cutting refers to according to periodic structure and size requirement, to conductive spinning product
Matrix is cut, and non-conductive section in periodic structure is cut away, and leaves behind structure division conducting period, thereby is achieved by
The array that conductive region and gap are constituted forms alternative by X-band electromagnetic signal, the spinning of the other frequency electromagnetics of cut-off
Fabric.
In a preferred embodiment, it refers to being controlled using computer according to periodic structure and size requirement that computer, which is scribed,
Machine of scribing conductive spinning product matrix is cut, non-conductive section in periodic structure is cut away, conducting period is left behind
Structure division, thereby is achieved the array being made of conductive region and gap formed it is alternative by X-band electromagnetic signal, cut
The only textile of other frequency electromagnetics.
To sum up, the frequency selection textile of the X-band communication of the utility model can be applied to tent, by textile foundation
Tent size is cut, and pays attention to ensureing a textile that can play frequency selection transparency effect, longitude and latitude two
On a direction, it is necessary to contain at least 20 frequencies above respectively and select surface period structural unit, is i.e. 20 length of sides are the specific of D
Shape and structure, which needs to form closed structure, and when closed, each lateral surface is prepared by the textile.It can prepare
Obtain it is alternative by X-band, by shield the tents of other electromagnetic signals.
The frequency that the X-band communication of the utility model is described in detail below by specific embodiment selects the preparation of textile
Method, the experimental method used in the present embodiment are conventional method unless otherwise specified, material used in embodiment,
Reagent etc., is commercially available unless otherwise specified.
Embodiment 1：Using high-strength nylon textile as base material, longitude and latitude yarn count 222dtex × 222dtex, using weft density
Degree is 330 × 260/10cm, weight per square meter 250g/m2.Using circular ring shape periodic structure shown in Fig. 1 (a), one complete
Circular ring shape periodic structure unit size is D=10mm, r=9.4mm, a=1mm.According to the structure snd size, annulus one by one
Shape close structure arranges, and prepares the cylinder that size is 92cm × 150cm, wherein current-carrying part is spillage part.Using conductivity
It is 107Conductive silver paste is printed on by cylinder on high-strength nylon base by the conductive silver paste of S/m, 180 DEG C of drying are printed
It is formed with the textile of conductive region and non-conductive circle ring area periodic arrangement.The resonance point of the textile is anti-at 12GHz, resonance
Coefficient -40.39dB is penetrated, as shown in Figure 3.The textile is subjected to cutting sewing, pays attention to a complete rectangle cut-parts longitude and latitude
Direction contains and is not less than 150 circular ring shape periodic structure units, and tent is thus prepared, in order to ensure stringent frequency choosing
It selects, tent is containment tent, can be by X-band communication frequency, and ends other frequency electromagnetics.
Embodiment 2：Using the Polyester Textiles of plain weave as base material, longitude and latitude yarn count is 389dtex/144f, weft density
For 234 × 210/10cm, weight per square meter 197g/m2.Using circular ring shape periodic structure shown in Fig. 1 (a), circular ring shape period
Structural unit size is D=16mm；D=13.8mm；A=3mm.The structure is scribed into relief pattern on gilding press pressure roller, is pressed
The protrusion part of roller pattern is consistent with the metallic region in structure.Commercially available orange cold foil is chosen, its carrier thin film is faced upward, is shifted
Layer is close to cloth substrate downwards, and boiling hot, transfering printing process, wherein 170 DEG C of heating temperature, pressure 8kg/cm are flattened using circle2,
Thermoprint time 7s.(conductivity is 4 × 10 to electroplated layer in orange cold foil4S/m it) is transferred on textile by the pattern of design, i.e.,
Obtain the textile for being printed with conductive region and non-conductive circular annular region periodic arrangement.The resonance point of the textile exists
11.5GHz, reflection of electromagnetic wave coefficient is -47.08dB at resonance, as shown in Fig. 4.The textile is subjected to cutting sewing, is paid attention to
One complete rectangle cut-parts direction of warp and weft contains and is not less than 100 circular ring shape periodic structure units, and account is thus prepared
Paulin, in order to ensure stringent frequency selection, tent is containment tent, can be by X-band communication frequency, and ends other frequency electricity
Magnetic wave.
Embodiment 3：Using the terylene conductive spinning product of coating surface cupro-nickel as base, conductivity is 3.5 × 105S/m, through,
Weft yarn branch is 270dtex × 270dtex, thread count 486 × 325/10cm, grammes per square metre 220g/m2.On laser cutting machine,
Input square periodic structure, unit size D=26mm shown in Fig. 1 (b)；D=8mm.According to the size, by conductive spinning product
It is cut, leaves the current-carrying part being connected to each other and square gap, that is, obtain the conductive and non-conductive square gap period
The textile of arrangement.The resonance point of textile reflectance factor -10.11dB at 11.2GHz, resonance, as shown in Figure 5.It should
Textile carries out cutting sewing, notices that a complete rectangle cut-parts direction of warp and weft contains 70 square periodic structure lists
Thus the hermetic type tent with retractable mouth is prepared in member, can be by X-band communication frequency, and ends other frequency electricity
Magnetic wave.
Embodiment 4：Using the nylon conductive spinning product of coating surface silver as base, conductivity is 3 × 106S/m, warp, weft yarn
Branch is 250dtex × 250dtex, thread count 500 × 300/10cm, grammes per square metre 210g/m2.It scribes on machine, inputs in computer
Square periodic structure unit, dimension D=24mm shown in Fig. 2 (b)；D=9mm.According to the size, conductive spinning product is carried out
Cutting, leaves the current-carrying part being connected to each other and square gap, that is, obtains conductive and non-conductive square gap periodic arrangement
Textile.The resonance point of textile reflectance factor -16.10dB at 11.9GHz, resonance, as shown in Figure 6.By the weaving
Product carry out cutting sewing, notice that a complete rectangle cut-parts direction of warp and weft contains 50 square periodic structure units,
Thus the hermetic type tent with retractable mouth is prepared, can be by X-band communication frequency, and end other frequency electromagnetics
Wave.
Embodiment 5：Using super fine polyester textile as base material, longitude and latitude yarn count is 83dtex/72f × 167dtex/144f, warp
Filling density is 234 × 210/10cm, weight per square meter 120g/m2.Using shape periodic structure list in Jerusalem shown in Fig. 2 (c)
Member, size D=14mm；D=6mm；A=1mm；B=4mm.Mask is prepared according to the structure, wherein the equal hollow out of current-carrying part.
Mask is attached on textile substrate, progress vacuum magnetic-control sputtering, in sputtering process, cannot have been sputtered by the part that mask covers
Metal is non-conducting areas.Using copper target and nickel target, copper target sputtering is first carried out, then carry out nickel target sputtering, the conductive region of acquisition
Conductivity is 5 × 104S/m.Thus to obtain the textile with shape structure in Jerusalem shown in Fig. 1 (c), the textile resonance
It is 11.8GHz to put, and reflectance factor is -25.59dB at resonance, as shown in Figure 7.The textile is subjected to cutting sewing, pays attention to one
A complete rectangle cut-parts direction of warp and weft contains 100 Jerusalem periodic structure units, is thus prepared with can
The hermetic type tent of hole, can be by X band communications rates, and end other frequency electromagnetics.
Embodiment 6：Using terylene/polyamide fibre blended textile as base material, longitude and latitude yarn count is 83dtex/72f × 167dtex/
144f, weft density are 234 × 210/10cm, weight per square meter 120g/m2.Using the Jerusalem shape period shown in Fig. 1 (c)
Structure, Jerusalem periodic structure unit size are D=17mm；D=12mm；A=1mm；B=2mm.It is prepared according to the structure
Mask, wherein the equal hollow out of current-carrying part.Mask is attached on textile substrate, cupro-nickel composite electroless-plating, the conduction of acquisition are carried out
Region conductivity is 105S/m.In plating process, the part covered by mask is non-conducting areas.Thus to obtain with Fig. 1
(c) shape periodic structure textile in Jerusalem shown in, the textile resonance point are 9.1GHz, at resonance reflectance factor be-
37.85dB as shown in Figure 8.The textile is subjected to cutting sewing, notices that a complete rectangle cut-parts direction of warp and weft contains
There are 120 Jerusalem shape periodic structure units, the hermetic type tent with retractable mouth is thus prepared, X waves can be passed through
Section communication frequency, and end other frequency electromagnetics.
The various embodiments described above are merely to illustrate the utility model, wherein the structure of each component, connection type and manufacture craft
Etc. may be changed, every equivalents carried out on the basis of technical solutions of the utility model and improvement,
It should not exclude except the scope of protection of the utility model.
Claims (4)
1. a kind of frequency of X-band communication selects textile, which is characterized in that the textile is by conductive region and nonconductive regions
Domain constitutes periodic structure；The non-conducting areas is not connected to mutually, and the non-conducting areas uses circular ring shape, square or Ye Lusa
Hail nonconductive structures constitute together with corresponding conductive structure and form circular ring shape, square or Jerusalem shape periodic structure
Unit；
Each circular ring shape periodic structure unit is the square area that the length of side is D, and the square is arranged with inside region
Have outside diameter d, internal diameter d-2a circular ring shape nonconductive structures, circular ring shape nonconductive structures remainder is removed in the square area
It is conductive structure to divide, wherein D is 10~16mm, and d is 9~14mm, and a is 1~3mm；Several described circular ring shape periodic structures
Cell array arranges to form circular ring shape periodic structure；
Each square periodic structure unit is the square area that the length of side is D, and the square area is internally provided with
The length of side is the square nonconductive structures of d, and it is equal that the square nonconductive structures remainder is removed in the square area
For conductive structure, wherein D is 24~26mm, and d is 8~9mm；Several described square periodic structure cell arrays arrangement shapes
At square periodic structure；
Each Jerusalem shape periodic structure unit is the square area that the length of side is D, is set inside the square area
The sub- nonconductive structures in Jerusalem are equipped with, the sub- nonconductive structures rest part in Jerusalem is removed in the square area
It is conductive structure, Jerusalem is that orthogonal setting width is a and right-angled intersection region that length is 2d, and described ten
Four ends of word intersection region are provided with and respectively communicated with the rectangular area that width is a and length is b, wherein D be 14~
17mm, d are 6~12mm, and a is 1~3mm, and b is 2~6mm；Several described Jerusalem shape periodic structure cell array arrangements
Form Jerusalem shape periodic structure.
2. the frequency of X-band communication as described in claim 1 selects textile, which is characterized in that the conductive region is to turn
The metal layer of print, coating or plating, the metal layer include the compound one or more metals of silver, copper, zinc, aluminium, iron nickel, cupro-nickel
Composite coating or coating；The metal layer can also use metal or metalized fibers yarn weaving to form.
3. the frequency of X-band communication as described in claim 1 selects textile, which is characterized in that the non-conducting areas is
Conventional textile, the textile that the conventional textile is made of cotton, fiber crops, hair or silk；Or by terylene, polyamide fibre, acrylic, third
The textile that synthetic fibre or polyvinyl are constituted；Or all kinds of textiles being made of UHMWPE, aramid fiber or polyimides；Or it is aforementioned all kinds of
The blended or interwoven textile of fiber.
4. the frequency of X-band communication as described in claim 1 selects textile, which is characterized in that the electricity of the conductive region
Conductance is not less than 104S/m。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829193A (en) * | 2017-11-30 | 2018-03-23 | ***后勤保障部军需装备研究所 | The frequency selection textile of X-band communication, the preparation method and application of textile |
| CN115339189A (en) * | 2022-07-21 | 2022-11-15 | 东华大学 | Flexible broadband wave-absorbing fabric and preparation method thereof |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829193A (en) * | 2017-11-30 | 2018-03-23 | ***后勤保障部军需装备研究所 | The frequency selection textile of X-band communication, the preparation method and application of textile |
| CN115339189A (en) * | 2022-07-21 | 2022-11-15 | 东华大学 | Flexible broadband wave-absorbing fabric and preparation method thereof |
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