CN109980348A - A kind of corrosion-resistant flexible wearable antenna and preparation method thereof - Google Patents
A kind of corrosion-resistant flexible wearable antenna and preparation method thereof Download PDFInfo
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- CN109980348A CN109980348A CN201910323050.6A CN201910323050A CN109980348A CN 109980348 A CN109980348 A CN 109980348A CN 201910323050 A CN201910323050 A CN 201910323050A CN 109980348 A CN109980348 A CN 109980348A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0088—Fabrics having an electronic function
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/247—Mineral
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/593—Stiff materials, e.g. cane or slat
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D25/00—Woven fabrics not otherwise provided for
- D03D25/005—Three-dimensional woven fabrics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
- H01Q1/368—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor using carbon or carbon composite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
- D10B2101/122—Nanocarbons
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
- D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
- D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
Abstract
The invention discloses a kind of corrosion-resistant flexible wearable antennas, which is characterized in that radiation element layer, the dielectric matrix layer of middle layer and the ground panel of lower layer including upper layer, the radiation element layer and ground panel use conductive yarn, are connected by feed line；Dielectric matrix layer uses non-conducting yarns；The radiation element layer, dielectric matrix layer and ground panel use three-dimensional orthogonal structure, it is made of warp thread and weft yarn, it is mutually perpendicular between warp thread and weft yarn and does not interweave, interweaved on weft yarn along warp thread direction by bundled yarn and radiation element layer, dielectric matrix layer and ground panel are tied up into an entirety.Preparation method includes: selection non-conducting yarns, tests its dielectric constant, and design radiation elemental size obtains corrosion-resistant flexible wearable antenna using the method for three-dimensional woven.The resulting wearable antenna of the present invention is weaved using corrosion-resistant yarn, and good integrity is easily conformal, can be adjusted with bending, has stable electromagnetic radiation performance, and application prospect is extensive.
Description
Technical field
The invention belongs to field of antenna, and in particular to a kind of corrosion-resistant flexible wearable antenna and preparation method thereof.
Background technique
Currently, wireless communication technique is in fields such as military and national defense, scientific research detection, industrial production, medical treatment and civil telecommunications
It has a wide range of applications, meanwhile, with the development of human body central site network, various wearable wireless telecom equipments come into being.And
Antenna should have as an essential component units in wireless communication and adapt to various working environments, severe
The ability of retention property under environmental condition.Traditional communication antenna is prominent structure, is taken up too much space, and intolerant to external force, easily
Damage, enables user's action be obstructed, the risk of exposure position.Therefore, in wearable antenna field, there is laminated structure, ruler
Very little lesser microstrip antenna has obtained extensive utilization.It is mesh that microstrip antenna, which is placed in the opposed flattened position such as back of clothes,
The common solution in preceding wearable field.
Microstrip antenna is generally by radiation element, dielectric substrate, three layer elements of earth plate composition.Conventional microstrip antenna uses
The rigid materials such as copper sheet, can not be bent, conformal ability it is poor, can be influenced because of bending during human body dresses use performance,
It shortens the working life.In recent years, have both at home and abroad using textile materials such as felts as dielectric substrate and use thinner conductive element
Part achieves certain achievement to promote the research of antenna conformal ability.But the laminated structure that antenna is still separated by three layers
It pastes, in some adverse circumstances, such as the case where high temperature or external impacts and under conditions of bending, is easy to appear layering
The phenomenon that with fracture, antenna is damaged；In addition to this, traditional antenna mostly uses not corrosion-resistant material, therefore not applicable
In the case where the working environments such as Chemical Manufacture, fire-fighting are special.However the environment of this kind of work is abnormally dangerous, in operation process
In, and extraneous holding liaison is vital.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of corrosion-resistant flexible wearable antenna and preparation method thereof, solutions
Certainly current wearable antenna does not have flexibility, is not easy conformal, the problem of can not application under conditions of adverse circumstances, solves simultaneously
The generated delamination failure phenomenon of laminated microstrip antenna during bending.
In order to solve the above-mentioned technical problems, the present invention provides a kind of corrosion-resistant flexible wearable antennas, which is characterized in that
Radiation element layer, the dielectric matrix layer of middle layer and the ground panel of lower layer including upper layer, the radiation element layer and ground panel
Using conductive yarn, connected by feed line；Dielectric matrix layer uses non-conducting yarns；The radiation element layer, dielectric matrix layer
Three-dimensional orthogonal structure is used with ground panel, is made of warp thread and weft yarn, is mutually perpendicular to and does not have between warp thread and weft yarn
Interweave, is interweaved on weft yarn along warp thread direction by bundled yarn and radiation element layer, dielectric matrix layer and ground panel are tied up into one
It is whole.
Preferably, the conductive yarn is appointing in carbon nanotube yarn, metallic fiber, conductive coating fiber and carbon fiber
It anticipates one or more blend fibres.
Preferably, the non-conducting yarns are high-strength high-modulus polyethylene fiber (ultra high molecular weight polyethylene fiber), poly- four
Any one or more blend fibre in vinyl fluoride fiber and aramid fiber.
Preferably, the dielectric loss of the non-conducting yarns is less than 0.01.
It is highly preferred that the dielectric constant of the high-strength high-modulus polyethylene is 2.2~2.4, the dielectric constant of polytetrafluoroethylene (PTFE)
It is 1.8~2.2, the dielectric constant of aramid fiber is 3.3.
The present invention also provides the preparation methods of above-mentioned corrosion-resistant flexible wearable antenna, which is characterized in that including with
Lower step:
Step 1: selection non-conducting yarns are weaved into three-dimensional orthogonal fabric on three-dimensional loom, test and calculate it
Dielectric constant and dielectric loss；According to obtained dielectric constant, the basic of radiation element is calculated by Antenna Design empirical equation
Size；
Step 2: selection conductive yarn is carrying out weaving three-dimensional just on three-dimensional loom together with non-conducting yarns in step 1
Knot structure, so that conductive yarn is located at top layer and lowest level, as radiation element layer and ground panel, so that conductive yarn
Positioned at middle layer, as dielectric matrix layer；The radiation element layer, dielectric matrix layer and ground panel are by warp thread and weft yarn group
At being mutually perpendicular between warp thread and weft yarn and do not interweave, interweaved along warp thread direction by multilayer on weft yarn by bundled yarn
Fabric is bundled into an entirety, obtains corrosion-resistant flexible wearable antenna.
Preferably, the frequency of Antenna Design is 0.5~10GHz in the step 1, can be adjusted with demand, Ke Yiwei
2.4GHz is applied to commercial field of wireless transmission, is also possible to other frequency ranges applied to different fields.
Preferably, non-conducting yarns are high-strength high-modulus polyethylene fiber, polytetrafluoroethylene fibre and aramid fiber in the step 1
The blend fibre of any one or more in fiber；The dielectric loss of non-conducting yarns is less than 0.01.
It is highly preferred that the dielectric constant of the high-strength high-modulus polyethylene is 2.2~2.4, the dielectric constant of polytetrafluoroethylene (PTFE)
It is 1.8~2.2, the dielectric constant of aramid fiber is 3.3.
Preferably, conductive yarn is carbon nanotube yarn, metallic fiber, conductive coating fiber and carbon fiber in the step 2
The blend fibre of any one or more in dimension.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention combines weaving three-dimensional woven technology and antenna design techniques, and obtaining a kind of corrosion resistant flexibility can wear
Antenna is worn, the wireless signal transmission function of antenna is imparted on fabric, obtains a kind of novel intelligent textile.
(2) the corrosion resistant flexible wearable antenna that the present invention obtains uses three-dimensional orthogonal structure, is easy between warp and weft
Mutually sliding, changes antenna structure shape with human motion, while keeping the stability of antenna performance.
(3) the corrosion resistant flexible wearable antenna that the present invention obtains is three-dimensional integrated structure, relative to laminated micro-strip
Antenna has the characteristics that anti-layering.
(4) the corrosion resistant flexible wearable antenna that the present invention obtains is formed by yarn weaving completely, is had good soft
Property and conformal ability, while can weave into clothes, achieve the effect that stealth.
(5) the flexible wearable antenna that the present invention obtains is made of resistant material, and chemical property is stablized, and is had and is being disliked
It can work normally under the conditions of bad and be not easy corrosion and damage.
(6) the corrosion resistant flexible wearable antenna that the present invention obtains is in military and national defense, scientific research detection, Chemical Manufacture, stone
The fields such as oil, fire-fighting have broad application prospects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the corrosion-resistant flexible wearable antenna of the present invention；
Fig. 2 is the top view of the corrosion-resistant flexible wearable antenna of the present invention；
Fig. 3 is the front view of the corrosion-resistant flexible wearable antenna of the present invention；
Fig. 4 is the right view of the corrosion-resistant flexible wearable antenna of the present invention；
Fig. 5 is the dimensional drawing of the corrosion-resistant flexible wearable antenna of the present invention；
Description of symbols: 1- radiation element layer, 2- dielectric matrix layer, 3- ground panel, 4- bundled yarn.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Antenna Design empirical equation:
LG=L+0.2 λgFormula 1-6；
WG=L+0.2 λgFormula 1-7；
Wherein frFor center frequency, εrFor the dielectric constant of web medium substrate, h is flexible antennas thickness, and c is in vacuum
The light velocity, W and L are respectively that radiation element 1 is wide and long, λ0For free space wavelength, WG and LG are the width of finished product flexibility microstrip antenna
And length.
Embodiment 1
As shown in figures 1-4, a kind of corrosion-resistant flexible wearable antenna, the radiation element including upper layer are present embodiments provided
The ground panel 3 of layer 1, the dielectric matrix layer 2 of middle layer and lower layer, the radiation element layer 1 and ground panel 3 are rotten using chemically-resistant
The carbon nanotube conducting yarn of erosion, is connected by feed line；The dielectric matrix layer 2 uses polytetrafluoroethylene fibre；It is described
Radiation element layer 1, dielectric matrix layer 2 and ground panel 3 use three-dimensional orthogonal structure, are made of warp thread and weft yarn, warp thread and latitude
It is mutually perpendicular between yarn and does not interweave, interweaved along warp thread direction by radiation element layer 1, medium on weft yarn by bundled yarn 4
Base layer 2 and ground panel 3 tie up into an entirety.
The preparation method of above-mentioned corrosion-resistant flexible wearable antenna is specific as follows:
Step 1: the polytetrafluoroethylene fibre (Shandong Sen Rong new material limited liability company) with fineness for 562dtex is non-
Conductive yarn is weaved into three-dimensional orthogonal fabric on three-dimensional loom, tests and calculate its dielectric constant, set by the present embodiment
The operating frequency of antenna of meter is 2.4GHz, its dielectric constant of prepared material is normal by working frequency in empirical equation and dielectric
Theory relation between number calculates to be 1.9.According to Antenna Design empirical equation, it is calculated based on the resistance to of polytetrafluoroethylene fibre
Corrode the dimensional parameters of flexible wearable antenna；
As shown in figure 5, wherein W and L is respectively the width and length of radiation element 1, WG and LG, which are that finished product is corrosion-resistant, flexible to be dressed
The width and length of antenna, FL are the length of microstrip line, and FD is the width of microstrip line；Wherein: W and L is 4.2 centimetres, and WG and LG are
12 centimetres, FL is 4 centimetres, and FD is 2.2 centimetres,
Step 2: carbon nanotube yarn (Suzhou Creative-carbon Nanotechnology Co., Ltd., the model SCNC- for being 200 μm with diameter
F radiation element layer and ground panel) are prepared for conductive yarn, is prepared and is situated between as non-conducting yarns using polytetrafluoroethylene fibre in step 1
Matter base layer controls the motion mode of bundled yarn by control heald frame using multiple groups heald frame weaving process；Simultaneously using more
Sword pole weft insertion technique controls the motion mode of weft yarn, the woven orthohormbic structure antenna of weaving three-dimensional；
Polytetrafluoroethylene (PTFE) yarn and carbon nanotube yarn are drawn by bobbin cradle first, divided in advance by steel button before machine
Layer, bundled yarn 6 (polytetrafluoroethylene (PTFE) yarn) pass through heddle eyelet, and warp thread is divided into four layers, and upper and lower level is carbon nanotube yarn, centre two
Layer is polytetrafluoroethylene (PTFE) yarn, and warp thread is passed through between the heald of the heald frame of page two, forms multilayer shed open after lower leaf on heald frame,
Each layer yarn distribution is from top to bottom followed successively by the carbon nanotube yarn for constituting radiation element layer, two stratas four for constituting dielectric matrix layer
Vinyl fluoride fiber, the carbon nanotube yarn for constituting earth plate；Weft yarn is polytetrafluoroethylene (PTFE) yarn, after being introduced by arrow shaft, on heald frame
Lower alternating, bundled yarn are that polytetrafluoroethylene (PTFE) yarn is completed to interweave, and filling yarn are bundled into an entirety, subsequent reed completion is beaten
Latitude is wound by motor and completes curling work, the weaving of three dimensional fabric is completed after reciprocation cycle；
Weave radiation element with outer portion when, top layer does not introduce carbon nanotube yarn, also not by through to carbon nanotube yarn
It is woven into；When weaving radiation element, then conductive yarn is woven into wherein, constitutes fabric construction microstrip antenna.The three-dimensional finally obtained is just
Intertexture weft density: 10 pieces/centimetre；Bundle yarn density: 10 pieces/centimetre.
It after the completion of preparation, checks whether the size of radiation element patch meets parameter request, and determines fabric upper and lower level simultaneously
There is no current lead-through, mutually weld the pedestal of coaxial connector and feed core with earth plate and feeder line respectively after the completion of confirmation,
Complete the preparation of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal.After tested, pH value be 3 strong acid environment place 5 hours with
Afterwards, the standing-wave ratio of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal is still 1.5 or so, resonant frequency 2.4GHz, and gain performance is
4dB or so.
Embodiment 2
As shown in figures 1-4, a kind of corrosion-resistant flexible wearable antenna, the radiation element including upper layer are present embodiments provided
The ground panel 3 of layer 1, the dielectric matrix layer 2 of middle layer and lower layer, the radiation element layer 1 and ground panel 3 are rotten using chemically-resistant
The carbon nanotube conducting yarn of erosion, is connected by feed line；The dielectric matrix layer 2 uses polytetrafluoroethylene fibre；It is described
Radiation element layer 1, dielectric matrix layer 2 and ground panel 3 use three-dimensional orthogonal structure, are made of warp thread and weft yarn, warp thread and latitude
It is mutually perpendicular between yarn and does not interweave, interweaved along warp thread direction by radiation element layer 1, medium on weft yarn by bundled yarn 4
Base layer 2 and ground panel 3 tie up into an entirety.
The preparation method of above-mentioned corrosion-resistant flexible wearable antenna is specific as follows:
Step 1: being 222dtex with fineness, (this auspicious science and technology of Shanghai has the high-strength high-modulus polyethylene fiber of model SP200
Limit company) be non-conducting yarns, three-dimensional orthogonal fabric weave on three-dimensional loom, test and calculate its dielectric constant with
Dielectric loss, operating frequency of antenna designed by the present embodiment are 1.5GHz, its dielectric constant of prepared material passes through experience
Theory relation in formula between working frequency and dielectric constant calculates to be 1.3.According to Antenna Design empirical equation, it is calculated
The dimensional parameters of corrosion-resistant flexible wearable antenna based on high-strength high-modulus polyethylene fiber；
As shown in figure 5, wherein W and L is respectively the width and length of radiation element 1, WG and LG, which are that finished product is corrosion-resistant, flexible to be dressed
The width and length of antenna, FL are the length of microstrip line, and FD is the width of microstrip line；Wherein: W and L is 4.8 centimetres, and WG and LG are
14 centimetres, FL is 4.2 centimetres, and FD is 2 centimetres,
Step 2: by with a thickness of 22.1 μm of carbon nano-tube film, (Chinese Academy of Sciences's Suzhou nanotechnology is ground with nano bionic
Study carefully) it is prepared into film roll yarn, radiation element layer and ground panel are prepared as conductive yarn, with high-strength and high-modulus polyethylene fiber in step 1
Dimension is non-conducting yarns preparation media base layer, using multiple groups heald frame weaving process, controls bundled yarn by controlling heald frame
Motion mode；More sword pole weft insertion techniques are used simultaneously, control the motion mode of weft yarn, the woven orthohormbic structure day of weaving three-dimensional
Line；
Method for weaving is with embodiment 1, and the three-dimensional orthogonal fabric count finally obtained is close: 12 pieces/centimetre；Bundle yarn density:
10 pieces/centimetre.
It after the completion of preparation, checks whether the size of radiation element patch meets parameter request, and determines fabric upper and lower level simultaneously
There is no current lead-through, mutually weld the pedestal of coaxial connector and feed core with earth plate and feeder line respectively after the completion of confirmation,
Complete the preparation of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal.After tested, pH value be 3 strong acid environment place 5 hours with
Afterwards, the standing-wave ratio of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal is still 1.4 or so, resonant frequency 1.5GHz, and gain performance is
2.5dB left and right.
Embodiment 3
As shown in figures 1-4, a kind of corrosion-resistant flexible wearable antenna, the radiation element including upper layer are present embodiments provided
The ground panel 3 of layer 1, the dielectric matrix layer 2 of middle layer and lower layer, the radiation element layer 1 and ground panel 3 are rotten using chemically-resistant
The carbon nanotube conducting yarn of erosion, is connected by feed line；The dielectric matrix layer 2 uses polytetrafluoroethylene fibre；It is described
Radiation element layer 1, dielectric matrix layer 2 and ground panel 3 use three-dimensional orthogonal structure, are made of warp thread and weft yarn, warp thread and latitude
It is mutually perpendicular between yarn and does not interweave, interweaved along warp thread direction by radiation element layer 1, medium on weft yarn by bundled yarn 4
Base layer 2 and ground panel 3 tie up into an entirety.
The preparation method of above-mentioned corrosion-resistant flexible wearable antenna is specific as follows:
Step 1: with fineness for 158tex aramid fiber (kevlar129) (DuPont Corporation) for non-conducting yarns,
Three-dimensional orthogonal fabric is weaved on three-dimensional loom, tests and calculate its dielectric constant and dielectric loss, the present embodiment institute
The operating frequency of antenna of design is 5GHz, its dielectric constant of prepared material is normal by working frequency in empirical equation and dielectric
Theory relation between number calculates to be 2.4.According to Antenna Design empirical equation, it is calculated corrosion-resistant soft based on aramid fiber
The dimensional parameters of property wearable antenna；
As shown in figure 5, wherein W and L is respectively the width and length of radiation element 1, WG and LG, which are that finished product is corrosion-resistant, flexible to be dressed
The width and length of antenna, FL are the length of microstrip line, and FD is the width of microstrip line；Wherein: W and L is 4 centimetres, and WG and LG are 12
Centimetre, FL is 3.8 centimetres, and FD is 1.8 centimetres,
Step 2: carbon nanotube yarn (Suzhou Creative-carbon Nanotechnology Co., Ltd., the model SCNC- for being 200 μm with diameter
F radiation element layer and ground panel) are prepared for conductive yarn, using aramid fiber in step 1 as non-conducting yarns preparation media matrix
Layer controls the motion mode of bundled yarn by control heald frame using multiple groups heald frame weaving process；Drawn simultaneously using more sword poles
Latitude technique controls the motion mode of weft yarn, the woven orthohormbic structure antenna of weaving three-dimensional；
Method for weaving is with embodiment 1, and the three-dimensional orthogonal fabric count finally obtained is close: 5 pieces/centimetre；Binding yarn density: 5
Root/centimetre.
It after the completion of preparation, checks whether the size of radiation element patch meets parameter request, and determines fabric upper and lower level simultaneously
There is no current lead-through, mutually weld the pedestal of coaxial connector and feed core with earth plate and feeder line respectively after the completion of confirmation,
Complete the preparation of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal.After tested, pH value be 3 strong acid environment place 5 hours with
Afterwards, the standing-wave ratio of the corrosion-resistant flexible wearable antenna of three-dimensional orthogonal is still 1.6 or so, resonant frequency 5GHz, gain performance 3dB
Left and right.
Claims (7)
1. a kind of corrosion-resistant flexible wearable antenna, which is characterized in that the medium of radiation element layer (1), middle layer including upper layer
The ground panel (3) of base layer (2) and lower layer, the radiation element layer (1) and ground panel (3) use conductive yarn, pass through feedback
Electric wire connection；Dielectric matrix layer uses non-conducting yarns；The radiation element layer (1), dielectric matrix layer (2) and ground panel (3)
It using three-dimensional orthogonal structure, is made of warp thread and weft yarn, is mutually perpendicular between warp thread and weft yarn and does not interweave, pass through bundle
It ties up yarn (4) and radiation element layer (1), dielectric matrix layer (2) and ground panel (3) is tied up into one along warp thread direction intertexture on weft yarn
It is whole.
2. corrosion-resistant flexible wearable antenna as described in claim 1, which is characterized in that the conductive yarn is carbon nano-tube yarn
The blend fibre of any one or more in line, metallic fiber, conductive coating fiber and carbon fiber；The non-conducting yarns are
Any one or more blend fibre in high-strength high-modulus polyethylene fiber, polytetrafluoroethylene fibre and aramid fiber.
3. the preparation method of corrosion-resistant flexible wearable antenna as claimed in claim 1 or 2, which comprises the following steps:
Step 1: selection non-conducting yarns are weaved into three-dimensional orthogonal fabric on three-dimensional loom, test and calculate its dielectric
Constant and dielectric loss；According to obtained dielectric constant, the basic size of radiation element is calculated by Antenna Design empirical equation；
Step 2: selection conductive yarn carries out the positive knot of weaving three-dimensional together with non-conducting yarns in step 1 on three-dimensional loom
Structure, so that conductive yarn is located at top layer and lowest level, as radiation element layer (1) and ground panel (3), so that conductive yam
Line is located at middle layer, as dielectric matrix layer (2)；The radiation element layer (1), dielectric matrix layer (2) and ground panel (3) by
Warp thread and weft yarn composition, are mutually perpendicular between warp thread and weft yarn and do not interweave, by bundled yarn along warp thread side on weft yarn
Multilayer fabric is bundled into an entirety to interweaving, obtains corrosion-resistant flexible wearable antenna.
4. the preparation method of corrosion-resistant flexible wearable antenna as claimed in claim 3, which is characterized in that day in the step 1
The frequency of line design is 0.5~10GHz.
5. the preparation method of corrosion-resistant flexible wearable antenna as claimed in claim 3, which is characterized in that non-in the step 1
Conductive yarn is the blended of any one or more in high-strength high-modulus polyethylene fiber, polytetrafluoroethylene fibre and aramid fiber
Fiber；The dielectric loss of non-conducting yarns is less than 0.01.
6. the preparation method of corrosion-resistant flexible wearable antenna as claimed in claim 6, which is characterized in that the high-strength and high-modulus is poly-
The dielectric constant of ethylene is 2.2~2.4, and the dielectric constant of polytetrafluoroethylene (PTFE) is 1.8~2.2, and the dielectric constant of aramid fiber is 3.3.
7. the preparation method of corrosion-resistant flexible wearable antenna as claimed in claim 3, which is characterized in that led in the step 2
Electric yarn is the blended fibre of any one or more in carbon nanotube yarn, metallic fiber, conductive coating fiber and carbon fiber
Dimension.
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