CN108511874A - A kind of liquid RFID antenna and preparation method thereof - Google Patents
A kind of liquid RFID antenna and preparation method thereof Download PDFInfo
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- CN108511874A CN108511874A CN201810203203.9A CN201810203203A CN108511874A CN 108511874 A CN108511874 A CN 108511874A CN 201810203203 A CN201810203203 A CN 201810203203A CN 108511874 A CN108511874 A CN 108511874A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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Abstract
The present invention provides a kind of liquid RFID antenna, which, which includes at least, loop aerial part and liquid metal antenna part；Loop antenna section, which sets up separately, sets on first medium substrate, and the loop antenna section point includes inner antennas part and outer loop antenna part；Liquid metal antenna part is arranged in second medium substrate, and the interface of the inner antennas part on first medium substrate and outer loop antenna part is electrically connected electronic chip.The application proposes a kind of new model of cyclic structure cabling combination liquid metal antenna, the more occasions for having expanded RFID use compatible degree, it can ensure the electrical property of antenna while meeting flexible nature, and cleverly spare improvement plan is proposed, it is greatly improved the satisfaction that RFID is used in different scenes.
Description
Technical field
The invention belongs to wireless communications antenna fields, more specifically, being related to a kind of RFID made using liquid metal
Antenna.
Background technology
Radio frequency identification, that is, RFID（Radio Frequency Identification）Technology, which is one kind, can pass through channel radio
Letter identification specific objective and the contactless communication technology for reading and writing data.Using extensive ultrahigh frequency RFID frequency in global range
Segment standard includes Chinese Industrial Standards (CIS)（840-844.5MHz and 920.5-924.5MHz）, Unite States Standard（902-928MHz）And Europe mark
It is accurate（866-869MHz）.The RFID label antenna that must be used in communication process is the important component of RFID system, it
Performance will have a direct impact on the efficiency and quality of entire RFID system.
However due to the inherent characteristic of RFID antenna：How thin build is, internal structure is complicated, use occasion is various,
Many characteristics such as impedance matching is difficult, gain is not enough are all easy so that RFID is difficult to meet increasingly changeable use demand.Especially
Current smart home, or even intelligent daily necessities etc. all propose new requirement, water resistance, folding using characteristic to RFID
Property, heat resistance, can be used repeatedly, the active demands such as performance reliability become to be more and more obvious, and traditional RFID card piece
Or structure has been unable to meet demand.
In practice, we also noted that more and more fields there is large deformation ability to propose need RFID electronic label
Ask, for example, electronic product personalization and diversified degree raising, RFID electronic label applies in some complex working conditions and multiple
Requirement and challenge are proposed to the deformability of RFID electronic label on miscellaneous curved surface.At this time liquid antenna with having given skill
The many imagination spaces of art personnel, liquid metal antenna have good tensile property, are obtained in research and practical application
Extensive concern, but existing greatest problem is liquid metal radio-frequency antenna that its working frequency in drawing process is unstable,
Controllability is very poor, and it is also still difficult to overcome to design the regulatable liquid antenna of stretchable and resonant frequency at present.So while
Liquid antenna has the recoverability that traditional antenna do not have, complex communication application, but still also rests on the in the majority of laboratory,
Using few.
Invention content
The purpose of the present invention is to provide a kind of specific structure liquid RFID antennas to have for solving above-mentioned technical problem
There is the antenna shapes quality structure compared with Boping softness, by the way that liquid metal antenna to be rationally flexibly arranged to the medium in different layers
On substrate, flexibly coordinate with conventional loop antennas so that RFID can not only stronger adaptation varying environment, and remain good
Antenna Operation performance promotes user satisfaction.
Based on this, the present invention proposes a kind of liquid RFID antenna, it is characterised in that the RFID antenna, which includes at least, ring
Shape antenna part and liquid metal antenna part.
The loop antenna section, which sets up separately, sets on first medium substrate, and the loop antenna section point includes inner antennas part
And outer loop antenna part.
The liquid metal antenna part is arranged in second medium substrate, and the liquid metal antenna part is U-shaped by two
Structure is oppositely arranged composition, and broach is stretched out in the U-shaped structure bottom, constitutes pectination coupler.
Inner antennas part and the interface of outer loop antenna part on the first medium substrate are electrically connected electronics core
One side end of piece, two U-shaped structures of the liquid metal antenna part in the second medium substrate is also electrically connected electronics core
Piece；The first medium substrate is located on second medium substrate, two substrates stacking.
When preferably, on the liquid metal antenna fragmentary perspective to first medium substrate, it is located at first medium substrate
Nonmetallic coiler part is oppositely arranged on inner antennas part within the scope of outer loop antenna sections inner side.
Preferably, the liquid metal antenna part is connected to electronic chip by two tapered attachment devices, the tapered company
Connection device is embedded to the first medium substrate beveling and accesses the liquid metal antenna, and the inside of the tapered attachment device is equipped with cone
Type groove can fill liquid metal from first substrate surface by the tapered groove into the second substrate.
Preferably, a flexible waterproof layer is also set up on first medium substrate.
A kind of liquid RFID antenna production method as described in claim 1, which is characterized in that making step is as follows：
Need to calculate and simulate the size of antenna in corresponding environment according to the occasion of actual antennas work first, behind walk
Each portion operation in rapid is all carried out according to the result of above-mentioned calculating and simulation.
The cable hole or cabling channel of prefabricated liquid metal antenna, slot or hole on the corresponding position of the second medium substrate
Inner wall coat anticorrosion high temperature resistance film.
Bellmouth is arranged in corresponding position in the first medium substrate, which is upwardly deviated from second Jie
The upright position of U-type groove interface on matter substrate is embedded to the tapered attachment device of corresponding size, the tapered connection in coniform hole
Tapered groove has been stayed in device in advance.
The first second medium substrate is laminated so that tapered attachment device one end is electrically connected electronic chip, and the other end can be with
Beveling accesses the liquid metal antenna in the second medium substrate, realizes and is electrically connected.
Pass through preformed groove or hole progress liquid Metal Filling of the tapered groove into the second medium substrate, packing fluid
State metal continues to fill closing electrically conductive ink into tapered groove, to electrically conductive ink to when specifying the less than height filled out
Baking solidification is carried out to close filling mouth.
The electrically conductive ink that annular metal cabling is printed on the surface of first medium substrate, according to the work of actual antennas frequency
The specific number of turns of section setting outer shroud and inner ring trace portions is completed the laggard oven of printing and is toasted.
Electronic chip is placed, chip haptic element is electrically welded with loop aerial interface and tapered attachment device respectively；
Finally one flexible waterproof layer of covering setting on the first medium substrate.
Preferably, the interface of the connection electronic chip of the loop aerial part is arranged to tapered excessive structural.
Preferably, between the flexible waterproof layer and first medium substrate and the first second medium substrate, pass through viscosity
Glue is bonded, and moderate drying is carried out after bonding.
Preferably, the inner antennas part is connect with the end of outer loop antenna part to be internally embedded away by substrate
Line.
Beneficial effects of the present invention are：Solves traditional RFID antenna poor resistance, when facing different use environments
Performance is unstable, and easy inside is lost, and the technological deficiencies such as degree deficiency are adjusted, and the application proposes that a kind of cyclic structure cabling combines
The new model of liquid metal antenna, the more occasions for having expanded RFID use compatible degree, can ensure while meeting flexible nature
The electrical property of antenna also avoids conventional liquid metal antenna due to performance change caused by change in size, more proposes ingenious
Alternative scheme solve system itself possibility caused by defect, be greatly improved the satisfaction of RFID usage scenarios.
Description of the drawings
Fig. 1 is the side view of liquid RFID antenna structure of the present invention.
Fig. 2 is the positive perspective view of liquid RFID antenna of the present invention.
Fig. 3 is the microchannel that liquid metal is filled in liquid RFID antenna medium substrate of the present invention.
Fig. 4 is the beveling sectional view at the tapered attachment device of liquid RFID antenna of the present invention.
Fig. 5 is liquid RFID antenna frequency response test map of the present invention.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It should be noted that the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way,
So component count, shape and the size when only display is with related component in the present invention rather than according to actual implementation in schema are painted
System, when actual implementation kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout kenel also may be used
It can be increasingly complex.
As shown in Figs. 1-2, the present invention in RFID antenna include at least have loop aerial part 10 and liquid metal antenna
Part 20, the loop aerial part 10 are arranged on first medium substrate 32, and the loop antenna section point includes inner antennas
Part 12 and outer loop antenna part 11；In specific make, the cyclic annular number of turns of antenna is not specially limited, in those skilled in the art
In the range of can meeting, according to different RFID system application scenarios, the different circular number of turns can be set；Outer shroud in this
Partial operation leeway may be fewer than the operation leeway of inner ring, and reason is the setting of liquid metal antenna 20, the present invention
In flexibly by liquid metal antenna be arranged within the scope of outer loop antenna cabling, the benefit being arranged in this way is, due to Antenna Operation
The requirement of performance so that outer loop antenna part as possible cannot be overlapped with liquid metal antenna part, otherwise to antenna overall work
Performance influence will be larger, it is typical influence or interference be two antennas working frequency range overlapping region, it may appear that it is serious
It disturbs, more antenna gain can be lost by leading to disturb between beam side lobe；In addition preferably setting be to try to it is big so that outer shroud with
The U-shaped bottom distance of liquid metal antenna zooms out, and mutual independent degree is allowed to be obviously improved, this be also why cone used herein
The beveling of type attachment device 23 access liquid metal antenna 20 and the reason of electronic chip 30, referring to tapered beveling is arranged in Fig. 4
Angled arrangement can preferably zoom out the air line distance of liquid metal antenna part 20 and inner antennas part 12, to the two
Coupling influence be reduced to smaller, setting in this way can greatly improve coupled problem so that the radiation of antenna/connect
It receives gain and obtains superperformance；In addition relatively better electrode performance is also presented in tapered access.
The liquid metal antenna part 20 is arranged in second medium substrate 31, the liquid metal antenna part 20 by
Two U-shaped structures 21 are oppositely arranged composition, and broach is stretched out in 21 bottom of the U-shaped structure, constitutes pectination coupler 22, pectination coupler
22 it is perfect when because liquid metal being radiated/received cause momentary fluctuation and frequency deviation, including the alternative scheme subsequently proposed
Capacitance 24 is adjusted, it can flexible modulation abnormal performance caused by environmental change；The setting of liquid metal part 20 makes originally
The antenna performance of loop aerial part 10 of only coil coupling is supplemented and is improved, and the radiation of conventional RFID coil antennas/
Reception gain is limited, and also underaction is arranged in frequency range, and compatibility is not also strong in different usage scenarios, such as using in common intelligence
In energy daily necessities, it will usually need to apply RFID system element under the various more situations of " severe ", to antenna assembly
Tolerance test will be very harsh, the problems such as continuous bending, the switching of frequency range, the promotion of signal gain, there is appearance at one
It is unexpected, all will be so that antenna performance can not be put to good use, and this data that will seriously affect whole system combs, influencing consumer makes
With experience.
By the way that the liquid metal antenna part 20 is arranged, double frequency even multifrequency can be solved the problems, such as first, it can be according to intelligence
The different of energy application product need, and in setting corresponding frequency band, such as common smart home, use air wetting in the room
Device and be placed on basement parking stall, the demand to gain and frequency range can all exist inconsistent at work, humidifier it is general
Generally may be provided in 2-3 meters of ranges all over regulation and control distance, and the control ability on basement parking stall in 2-3 meters of ranges often not
It can realize, it may be necessary to be realized in 100-300 meters of longer-range, and signal needs the obstruction penetrated that can also increase
It is more, it may will recognize that made up using enhancing bluetooth or Zigbee in the prior art, however the complexity of equipment in this way can carry
It rises and can be reduced along with the use feeling comfort level of consumer.
By the setting of liquid metal antenna, under different usage scenarios, realize that double frequency or three frequencies are feasible, and
And disturbing effect between the frequency being subsequently likely to occur is considered in setting, special position setting so that liquid metal antenna portion
Point and inner antennas part cabling, see Fig. 2, two parts are oppositely arranged within the scope of outer shroud cabling after perspective, first medium base
The part that liquid metal antenna position is corresponded on plate is empty regions, and needs to limit, in vertical direction, liquid gold
Belong to the U-shaped structure side of antenna cabling all far from outer loop antenna inner peripheral portion, realizes necessary isolation.
Further, since liquid metal antenna is provided that in this case, so that current apply in some special scenes
When middle, good working characteristics still can be kept.For example, in the fabrics product in some saloon bar hotels, often set
RFID system is counted in the fabric, to mark use and the update status of fabric product, under such circumstances, when these fabrics face
When washing or drying, the environment with respect to " severe " to RFID will necessarily be formed.Traditional RFID can there is a problem of it is suitable, one
It is then in RFID applications if it is considered that more comfort properties cause RFID to use then will give a discount in tolerance
Yield reduces, and causes the cost in hotel, second if only considering the application cost in hotel, promotes RFID module application
Quality, and consumer is bound to cause using can obviously experience foreign body sensation when fabric, experience is very poor.
It is covered using more soft flexible layer in this case, the thickness that RFID sticks substrate is relatively low, ensure that module
Whole flexible nature, meets the comfort level of experience；Most critical is, this case is by the use of liquid metal antenna, preferably
The defect for solving traditional application flexibility substrate, the fracture of internal wiring or deformation will not be caused to cause because of long-term bending
The difference of radiation/receptivity keeps preferable tolerance performance, the continuity of liquid metal perfectly to solve the problems, such as very much this,
Suitable for various " severe " environment.
In addition the excellent properties of liquid metal are also manifested by as follows：In the present case, it is directed to traditional ink type antenna print
System, this is made up to liquid metal antenna, undeniable to be, the antenna structure of ink printed board is still likely to result in,
Performance caused by fracture or deformation is unstable；It is contemplated that liquid metal antenna and annular metal cabling
Frequency range can be repeated partly, if also and when coil antenna once occurs that performance is unstable or direct damage, liquid metal
Its partial function still may be implemented in antenna part, and is unlikely to whole damage.It is contemplated that the similar damage being likely to occur
Situation flexibly adjusts capacity cell in the other side setting relative to connection electronic chip of liquid metal antenna part 20
24, adjusting capacitance 24 can be not arranged in second medium substrate 31, can preferably select at the bottom of second medium substrate 31
Layer surface, the access by adjusting capacitance 24 adjust the antenna resonance characteristic of liquid metal antenna part 20, are unlikely to
Now primary damage causes the stagnation of whole system, reduces the cost of production.Adjusting the setting of capacitance can pre-set, can also
Later stage is manually arranged.
In the prior art, the disadvantage of liquid antenna is also more apparent, and antenna trend easily deforms and leads to radiation/reception letter
Number it is unstable, the application is by being relatively fixed position and the flow direction of liquid cabling so that liquid attribute relative fluctuation is down to most
It is low, frequency shift (FS) and fluctuation caused by liquid flow direction is unstable are ensure that, in addition also in relation with combed coupler and tunable capacitor
Intervention, also compensate for the unstable problem of liquid flow direction to a certain extent.
Inner antennas part 12 and the interface of outer loop antenna part 11 in Fig. 2 on first medium substrate 32 are electrically connected
Electronic chip 30, a side end of two U-shaped structures 21 of the liquid metal antenna part 20 in the second medium substrate 31
It is electrically connected electronic chip 30；The first medium substrate 32 is located on second medium substrate 31, two substrates stacking.Between stacking
It is bonded using existing bonding technique, it is preferable to use anti-oxidant, anticorrosion properties for adhesives.
When in the perspective to first medium substrate 32 of liquid metal antenna part 20, it is located at the nonmetallic of first medium substrate 32
Coiler part is oppositely arranged on inner antennas part 12 within the scope of 11 inside of outer loop antenna part.The liquid metal antenna
Part 20 is connected to electronic chip 30 by two tapered attachment devices 23, which is embedded to the first medium base
The beveling of plate 32 accesses the liquid metal antenna 20, and the inside of the tapered attachment device 23 is equipped with tapered groove, passes through the cone
Type groove can fill liquid metal material from 32 surface of first medium substrate into the second medium substrate 31.Liquid metal
It can be preferably common liquid metal material or liquid metal alloy etc., such as conjugation gallium-indium alloy (EGaIn)）Deng logical
The groove filling for crossing tapered attachment device 23 enters the micro-flow groove reserved in second medium substrate or hole.It is fills up to assigned scale
, the amount which needs when charging quantity will be filled with less than micro-flow groove or hole, the purpose of such reserved space
It is, there are enough spaces to unfilled part（Close to the position of filling mouth）Solidification closing is carried out, specific solidification is by having
Machine electrically conductive ink is filled in the space for completing to be left after liquid metal, then carries out solidification " locked in " operation.See Fig. 3, it is complete micro-
Chute pore structure pulls out next later shape and may refer to Fig. 3, and the filling reserved certain space of oral area point is for adding confined bed
Electric ink.The stronger ink of the preferred metallicity of electrically conductive ink can be formed moderately and tapered attachment device mouth after on the one hand solidifying
Bonding force, on the other hand good electrical transmission can be also formed with the welding between electronic chip.
Liquid metal antenna at work can be more permanent tolerance " adverse circumstances ", will not fold because of simple or
It falls and touches and cause performance unstable, in conjunction with the covering flexible layer of relatively thin operation substrate and flexible nature, first medium base
One flexible waterproof layer 33 is set on 32 so that antenna assembly has taken into account performance and comfortable effect.Referring to Fig. 5, RFID antenna exists
In 860MHz-940MHz frequency ranges, can the more stable wideband gain performance for obtaining 11dB or so, while the scanning beam obtained
Width is preferable, is easy to be used in many scenes of sphere of life.
The production method that liquid RFID antenna is further related in this case, making step are as follows：
Need to calculate and simulate the size of antenna in corresponding environment according to the occasion of actual antennas work first, behind walk
Each portion operation in rapid is all carried out according to the result of above-mentioned calculating and simulation.
The cable hole or cabling channel of prefabricated liquid metal antenna, slot or hole on the corresponding position of the second medium substrate
Inner wall coat anticorrosion high temperature resistance film.
Bellmouth is arranged in corresponding position in the first medium substrate, which is upwardly deviated from second Jie
The upright position of U-type groove interface on matter substrate is embedded to the tapered attachment device of corresponding size, the tapered connection in coniform hole
Tapered groove has been stayed in device in advance.
The first second medium substrate is laminated so that tapered attachment device one end is electrically connected electronic chip, and the other end can be with
Beveling accesses the liquid metal antenna in the second medium substrate, realizes and is electrically connected.
Pass through preformed groove or hole progress liquid Metal Filling of the tapered groove into the second medium substrate, packing fluid
State metal continues to fill closing electrically conductive ink into tapered groove, to electrically conductive ink to when specifying the less than height filled out
Baking solidification is carried out to close filling mouth.
The electrically conductive ink that annular metal cabling is printed on the surface of first medium substrate, according to the work of actual antennas frequency
The specific number of turns of section setting outer shroud and inner ring trace portions is completed the laggard oven of printing and is toasted.
Electronic chip is placed, chip haptic element is electrically welded with loop aerial interface and tapered attachment device respectively.
Finally one flexible waterproof layer of covering setting on the first medium substrate.
The interface of the connection electronic chip of loop aerial part is arranged to tapered excessive structural, good excessive to realize
Matching performance.Between flexible waterproof layer and first medium substrate and the first second medium substrate, glued by adhesive glue
It connects, moderate drying is carried out after bonding.The inner antennas part is connect with the end of outer loop antenna part can be by substrate
Portion is embedded in cabling.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (8)
1. a kind of liquid RFID antenna, it is characterised in that the RFID antenna, which includes at least, loop aerial part and liquid gold
Belong to antenna part；
The loop antenna section, which sets up separately, sets on first medium substrate, the loop antenna section point include inner antennas part and
Outer loop antenna part；
The liquid metal antenna part is arranged in second medium substrate, and the liquid metal antenna part is by two U-shaped structures
It is oppositely arranged composition, broach is stretched out in the U-shaped structure bottom, constitutes pectination coupler；
Inner antennas part and the interface of outer loop antenna part on the first medium substrate are electrically connected electronic chip, institute
The side end for stating two U-shaped structures of the liquid metal antenna part in second medium substrate is also electrically connected electronic chip；Institute
It states first medium substrate to be located on second medium substrate, two substrates stacking.
2. liquid RFID antenna as described in claim 1, which is characterized in that the liquid metal antenna fragmentary perspective to first
When on medium substrate, it is located at the nonmetallic coiler part of first medium substrate, outer shroud day is oppositely arranged on inner antennas part
Within the scope of line sections inner side.
3. liquid RFID antenna as described in claim 1, which is characterized in that the liquid metal antenna part is tapered by two
Attachment device is connected to electronic chip, which is embedded to the first medium substrate beveling and accesses the liquid metal
Antenna, the inside of the tapered attachment device are equipped with tapered groove, can be from first substrate surface to institute by the tapered groove
It states and fills liquid metal in second substrate.
4. liquid RFID antenna as claimed in claim 3, which is characterized in that also set up a flexible water on first medium substrate
Layer.
5. a kind of liquid RFID antenna production method as described in claim 1, which is characterized in that making step is as follows：
Need to calculate and simulate the size of antenna in corresponding environment according to the occasion of actual antennas work first, behind walk
Each portion operation in rapid is all carried out according to the result of above-mentioned calculating and simulation；
The cable hole or cabling channel of prefabricated liquid metal antenna on the corresponding position of the second medium substrate, slot or hole it is interior
Wall coats anticorrosion high temperature resistance film；
Bellmouth is arranged in corresponding position in the first medium substrate, which is upwardly deviated from second medium base
The upright position of U-type groove interface on plate is embedded to the tapered attachment device of corresponding size, the tapered attachment device in coniform hole
It is interior to have stayed tapered groove in advance；
The first second medium substrate is laminated so that tapered attachment device one end is electrically connected electronic chip, and the other end can be with
Beveling accesses the liquid metal antenna in the second medium substrate, realizes and is electrically connected；
Pass through preformed groove or hole progress liquid Metal Filling of the tapered groove into the second medium substrate, filling liquid gold
Belong to when specifying the less than height filled out, continues to fill closing electrically conductive ink into tapered groove, electrically conductive ink is carried out
Baking solidification is to close filling mouth；
The electrically conductive ink that annular metal cabling is printed on the surface of first medium substrate, sets according to the working frequency range of actual antennas
The specific number of turns of outer shroud and inner ring trace portions is set, the laggard oven of printing is completed and is toasted；
Electronic chip is placed, chip haptic element is electrically welded with loop aerial interface and tapered attachment device respectively；
Finally one flexible waterproof layer of covering setting on the first medium substrate.
6. liquid RFID antenna production method as claimed in claim 5, which is characterized in that the connection of the loop aerial part
The interface of electronic chip is arranged to tapered excessive structural.
7. liquid RFID antenna production method as claimed in claim 6, which is characterized in that the flexible waterproof layer and first is situated between
It between matter substrate and the first second medium substrate, is bonded by adhesive glue, moderate drying is carried out after bonding.
8. liquid RFID antenna production method as claimed in claim 7, which is characterized in that the inner antennas part and outer shroud
The end connection of antenna part can be internally embedded cabling by substrate.
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| CN201810203203.9A CN108511874A (en) | 2018-03-13 | 2018-03-13 | A kind of liquid RFID antenna and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810203203.9A CN108511874A (en) | 2018-03-13 | 2018-03-13 | A kind of liquid RFID antenna and preparation method thereof |
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|---|---|---|---|---|
| CN109950686A (en) * | 2019-03-11 | 2019-06-28 | 南京理工大学 | It is a kind of for reconstructing the electric control structure and its reconstructing method of liquid metal |
| CN113972480A (en) * | 2021-10-25 | 2022-01-25 | 电子科技大学 | Liquid metal reconfigurable array antenna based on two-dimensional stretchable flexible cavity |
| CN113972480B (en) * | 2021-10-25 | 2022-05-31 | 电子科技大学 | Liquid metal reconfigurable array antenna based on two-dimensional stretchable flexible cavity |
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