CN108695595A - RFID antenna - Google Patents
RFID antenna Download PDFInfo
- Publication number
- CN108695595A CN108695595A CN201810413335.4A CN201810413335A CN108695595A CN 108695595 A CN108695595 A CN 108695595A CN 201810413335 A CN201810413335 A CN 201810413335A CN 108695595 A CN108695595 A CN 108695595A
- Authority
- CN
- China
- Prior art keywords
- conductive
- antenna
- magnetic material
- sheet
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000696 magnetic material Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 239000006249 magnetic particle Substances 0.000 claims abstract description 6
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 43
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000002161 passivation Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 238000003486 chemical etching Methods 0.000 claims 1
- 239000011247 coating layer Substances 0.000 claims 1
- 229910002804 graphite Inorganic materials 0.000 claims 1
- 239000010439 graphite Substances 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 description 24
- 238000004891 communication Methods 0.000 description 5
- 230000005672 electromagnetic field Effects 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
Classifications
-
- 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
- H01Q1/2225—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 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- 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
- 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
-
- 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
- H01Q7/06—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 with core of ferromagnetic material
Landscapes
- Details Of Aerials (AREA)
Abstract
The present invention relates to a kind of methods for manufacturing antenna comprising following step:The sheet magnetic material made of the composite material including magnetic-particle and synthetic resin is provided, the sheet magnetic material has first surface;The conductive plane trace at least one turn of bilge is directly formed on the first surface of sheet magnetic material.
Description
The application be the applying date be September in 2012 11, application No. is 201280045015.9, entitled " radio frequencies
The divisional application of the application for a patent for invention of identification antenna ".
Technical field
The present invention relates to a kind of method for manufacturing antenna and it is related to a kind of to be obtained by means of the method
Antenna.
Background technology
The use of the label with radio frequency identification (RFID) antenna to identify with supervision object is well known in the art.
This label for example includes the antenna loop formed by conductive trace, and the conductive trace is electrically connected to the collection including memory
At circuit (IC) chip.The label uses the electromagnetic field generated by RFID reader.Enter electromagnetic field mesopodium in this label
In the case of reaching for a long time, RFID antenna will be energized and electronic loop can receive day towards reader or individually
Line sends signal.
This pattern for the contactless communication between IC tag and reader/writer is expected to become in future
It is more diversified.For example, in order to further increase convenient level, mobile terminals (such as mobile phone) will be equipped with
There are label apparatus and reader/writer device.
For example, by means of to mobile phone label allocation device, mobile phone to can be used in leaning against by means of holding phone
Train expense is paid on the gate of station.
In the RFID system (such as near-field communication NFC standards) that the recent frequency with 13.56MHz operates, need
Operating environment appropriate.For example, about communication attributes, expect to have longer communication distance, or in reader/writer and
In the case that IC tag is relative to each other, roomy plane commu range is expected to have.
However it is made of an electrically conducting material or is located in the environment surrounded by electromagnetic field mounted on surface in this label
When on object, such as it is located in shell or when above battery, the resonant frequency of antenna is relative to nominal resonance frequency
Offset.Information exchange between the bias effect transponder and reader/writer device of this resonant frequency, and even
Cause completely without communication (keeping entire RFID systems detuning).
In addition, in order to available, this antenna must also meet space consuming demand, and specifically antenna should have and to the greatest extent may be used
The thin thickness of energy, and should manufacture as easily as possible, and it is compatible with batch production specification.It is being intended to seal on antenna
When in mobile phone, particularly thin type smart phone of new generation, thickness problem be it is especially important, in this case
Space is quite limited.
Invention content
The object of the present invention is to provide a kind of methods for manufacturing the antenna with the thickness and cost that reduce, and
The antenna is operable when it is installed on metal device and/or is disposed in the environment surrounded by electromagnetic field.
For this purpose, providing a kind of method according to claim 11.
In fact, by means of claimed feature, the antenna for reducing thickness (down to 150 μm) can be made, because of day
Line conductive trace is formed directly on ferrite sheet material, and the ferrite sheet material is in addition to its major function as shield member
Except, also work as supporting base material.It is therefore not required to using any additional intermediate supports base material for antenna, and
And therefore this also aids in reduction manufacturing tolerance superposition.
Description of the drawings
These and other aspects of the invention will in detail be solved very much by means of embodiment and with reference to attached drawing
It releases, wherein:
Fig. 1 shows the first embodiment of antenna according to the present invention;
Fig. 2 shows the second embodiments of antenna according to the present invention;
Fig. 3 shows the sectional view of the antenna along Fig. 2 arrows;And
Fig. 4 shows the schematic diagram of antenna according to the present invention.
Attached drawing is not necessarily drawn to scale.Generally, same parts are marked by same reference numeral in the accompanying drawings.
Specific implementation mode
Fig. 1 shows the first embodiment of plane formula RFID antenna comprising has been formed with the support of conductive trace 4
Base material 2.In the context of the present invention, it includes being dispersed in tree that the magnetic flexible sheet material, which is made, by magnetic flexible sheet material in base material 2
Magnetic-particle (powder or thin slice of such as magnetic ferrite) in fat adhesive.The example of this ferrite sheet material be by
The LiqualloyTM fexible films that Alps Electric Co., Ltds sell.Such ferrite sheet material is also easy to borrow
Help ferrite material supplier (such as Japanese ferrite material supplier) to obtain.
Conductive trace has been formed directly into the first main surface of ferrite sheet material, so that conductive trace is flat
Row extends in the plane of the first main surface.Conductive trace is for example made of copper.As shown in Fig. 1, antenna trace includes spiral shape
Multiple turn of bilges (there are four turn of bilges herein) of formula.The turn of bilge in outside includes connecting pin, and the connecting pin is by means of electric bridge connection
To the connecting pin of the turn of bilge of inside.
In the context of the present invention, verb " formation " covers the method being listed below exhaustively:
By conductive foil be laminated and conductive foil optionally cover later for example will be conductive by means of photoetching gum resin
Foil optionally etches;
The conductive foil for being formed pattern by means of mechanical stamping is laminated;
By conductive ink silk-screen printing or intaglio printing or ink jet printing or hectographic printing;
Conductor wire is laid with to the first surface of sheet magnetic material;
By conductive particle chemical vapor deposition.
For the viewpoint of manufacture, the method will be advantageously chosen, so that it can be via permission Gao Sheng
The reel-to-reel process of yield executes.The method for being particularly adapted to reel-to-reel implementation is first three in method mentioned above.
Antenna trace can be designed so that its resonant frequency is in 13.56MHz ranges, to meet such as NFC rule
It is fixed.In order to adjust induction coefficient, thus it is possible to vary the width of the distance between two adjacent turn of bilges gap and/or each turn of bilge
And/or the quantity of turn of bilge.
Fig. 2 illustrates the second embodiment of antenna, and difference lies in conductive antenna traces with first embodiment
Two connecting pins do not bridge.
It is the sectional view of the line A-A along Fig. 2 with reference to Fig. 3, it is observed that there are two blind for the configuration of ferrite lamination for copper-
Hole is located at the level of two antenna connection terminals.These blind holes are provided for antenna is electrically connected to a device and are readily connect
Enter.Antenna connection terminal can be with mechanical stamping, to obtain being electrically connected with the reliable of described device.
A kind of preferred process for manufacturing antenna according to second embodiment will be described now.
The process includes:
A) ferrite sheet material is provided;
B) adhesive linkage is coated on the first surface of ferrite sheet material;
C) two through-holes are gone out in ferrite sheet material;
D) copper foil is laminated on adhesive linkage;
E) layers of copper is covered with mask material to limit antenna pattern;
F) the non-shaded areas of copper foil is removed;
G) mask material is removed to expose copper tracing wire.
Optionally, it after step g), can continue to execute attached on exposed copper tracing wire and on the bottom table of blind hole
Add coating step, such as plating nickel or gold plating;Antenna trace passivation step can be alternatively executed, is corroded for preventing.
Alternatively, step b) and d) to g) can be by for example in patent document US7, the printing technology described in 060,418
It substitutes, the patent document is incorporated herein in the form of quoting.
Next the applicant successfully obtains antenna of the thickness with layer structure in 150 to 200 μ ms,
Exemplary drafting as in Fig. 4.
The layer structure of so-called one-side band blind hole include ferrite sheet material, ferrite sheet material first surface top
On adhesive linkage and it is last include stacking layers of copper.The thickness difference of usual ferrite sheet material, adhesive linkage and conductive trace
It is about 100 μm, 20 μm and 35 μm.
Optionally, the second sheet material of magnetic material is arranged on the second surface of composite magnetic sheet described above, i.e.,
Be arranged in the first sheet magnetic material be formed with or will be formed on the opposed surface in surface of conductive trace.
In the embodiment of the invention, the ferrite material of two types is used for the first sheet material and the second sheet material.
First sheet material is preferably chosen to material of the value less than 5H/m of the imaginary part μ " of possessed magnetic conductivity." being less than "
It should be understood as " being less than or equal to ".Since the μ " values of this compound ferrite material for being typically based on polymer are smaller,
The value of the real part μ ' of magnetic conductivity possessed by this first sheet magnetic material is smaller, i.e., described value is in 40 between 50H/m.
This smaller μ " values allow the ohmic loss for the antenna that will finally realize to minimize.
Second sheet material of ferrite material is selected as the larger material of possessed μ ' values, i.e. described value is more than 100H/m.
" being more than " should be understood as " being greater than or equal to ".It is not important for the selection of μ " values.
Second sheet material of the ferrite material with this larger μ ' values allows to obtain the quality factor q with enhancing
Antenna.
This second sheet magnetic material can be by composite material, slug type magnetism material including magnetic-particle and synthetic resin
Material or plane formula ferrite sheet material are made.
By means of using the combination of this first sheet magnetic material and the second sheet magnetic material, the antenna obtained to have splendid
Behavior, the ohmic loss specifically reduced and quality factor q.
This first sheet magnetic material and the second sheet magnetic material are specifically (such as Japanese by means of ferrite material supplier
Ferrite material supplier) it obtains.
In known antenna structure, layer structure generally includes:
Dielectric substrate (such as expoxy glass or polyethylene terephthalate PET or polyimides);
The conductive trace being formed on the first surface of dielectric substrate;
The ferrite sheet material being layered on the opposed side second surface of dielectric substrate.
The major limitation of known antenna configuration be larger overall thickness and conductive antenna trace and ferrite sheet material it
Between relatively large distance.
Although described embodiment is related to a kind of single side antenna, those of skill in the art can set
Think, method that can also be as described above manufactures the bilateral antenna with conductive hole.
Claims (7)
1. the method for manufacturing antenna comprising following step:
The sheet magnetic material made of the composite material including magnetic-particle and synthetic resin is provided, the sheet magnetic material has the
One surface;
Adhesive linkage is coated on the first surface of sheet magnetic material;
Through-hole is configured in sheet magnetic material and adhesive linkage;
The conductive antenna traces at least one turn of bilge are directly formed on the first surface of sheet magnetic material, form conductive day
The step of stitching line includes being bonded upper conductive coating layer by layer so that conductive layer is adhered to first surface and covers the through-hole
To form blind hole, formed by conductive layer to the bottom surface and conductive antenna traces of blind hole;The sheet magnetic material is in addition to its conduct
Except the major function of shield member, also work as supporting base material;And
The method is executed via reel-to-reel process.
2. according to the method described in claim 1, the step of wherein forming conductive antenna trace includes the following steps:
Mask pattern is coated on the electrically conductive optionally to protect conductive layer;
By conductive layer chemical etching to remove not protected conductive layer;And
Mask pattern is removed, to expose conductive trace.
3. according to the method described in claim 2, further including the steps that the trace plating that will be exposed or passivation.
4. according to any one of them method, wherein conductive layer are selected from copper, silver, aluminium, palladium and graphite in the previous claims
Go out.
5. according to the method described in claim 1, the step of wherein forming conductive antenna trace includes installing metal wire to magnetic
Step on the first surface of property sheet material.
6. according to any one of them method in the previous claims, wherein the method includes being arranged in the second sheet magnetic material
Step on the second surface of the sheet magnetic material made of the composite material including magnetic-particle and synthetic resin, described
Two surfaces and the first surface are opposed, the magnetic piece made of the composite material including magnetic-particle and synthetic resin
The value μ " of the imaginary part of magnetic conductivity possessed by material is less than 5H/m, and the real part of magnetic conductivity possessed by second sheet magnetic material
μ ' is more than 100H/m.
7. a kind of can be by means of the antenna according to the acquisition of any one of them process in the previous claims.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI2011004370 | 2011-09-14 | ||
| MYPI2011004370A MY166125A (en) | 2011-09-14 | 2011-09-14 | Rfid antenna |
| CN201280045015.9A CN103947040A (en) | 2011-09-14 | 2012-09-11 | Rfid antenna |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280045015.9A Division CN103947040A (en) | 2011-09-14 | 2012-09-11 | Rfid antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108695595A true CN108695595A (en) | 2018-10-23 |
Family
ID=46939696
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280045015.9A Pending CN103947040A (en) | 2011-09-14 | 2012-09-11 | Rfid antenna |
| CN201810413335.4A Pending CN108695595A (en) | 2011-09-14 | 2012-09-11 | RFID antenna |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280045015.9A Pending CN103947040A (en) | 2011-09-14 | 2012-09-11 | Rfid antenna |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2756547B1 (en) |
| JP (2) | JP6095070B2 (en) |
| KR (1) | KR20140060358A (en) |
| CN (2) | CN103947040A (en) |
| MY (1) | MY166125A (en) |
| WO (1) | WO2013037762A1 (en) |
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|---|---|---|---|---|
| CN103746181B (en) * | 2013-12-31 | 2017-06-13 | 瑞声科技(沭阳)有限公司 | NFC antenna and preparation method thereof |
| CN105098365B (en) * | 2014-05-14 | 2018-08-10 | 3M创新有限公司 | Near-field communication module |
| CN105633583A (en) * | 2014-10-28 | 2016-06-01 | 林小群 | Near-field communication module and manufacture method thereof |
| DE102015009319A1 (en) * | 2015-07-17 | 2017-01-19 | Saurer Germany Gmbh & Co. Kg | Transport system for spinning cops and method for operating the transport system |
| CN106650889A (en) * | 2016-11-22 | 2017-05-10 | 武汉大学 | Near field communication label integrated with magnetic composite membrane, and preparation method thereof |
| JP7344003B2 (en) * | 2018-04-24 | 2023-09-13 | 京セラ株式会社 | RFID tags and RFID systems |
| JP7190694B2 (en) | 2018-12-06 | 2022-12-16 | 株式会社マルアイ | Manufacturing method of conductive pattern for RFID |
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- 2011-09-14 MY MYPI2011004370A patent/MY166125A/en unknown
-
2012
- 2012-09-11 CN CN201280045015.9A patent/CN103947040A/en active Pending
- 2012-09-11 EP EP12766295.5A patent/EP2756547B1/en active Active
- 2012-09-11 WO PCT/EP2012/067718 patent/WO2013037762A1/en unknown
- 2012-09-11 CN CN201810413335.4A patent/CN108695595A/en active Pending
- 2012-09-11 KR KR1020147009474A patent/KR20140060358A/en not_active Withdrawn
- 2012-09-11 JP JP2014530178A patent/JP6095070B2/en active Active
-
2015
- 2015-11-16 JP JP2015223823A patent/JP6126188B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08216573A (en) * | 1995-02-09 | 1996-08-27 | Hitachi Chem Co Ltd | Ic card |
| CN101346853A (en) * | 2006-01-20 | 2009-01-14 | 松下电器产业株式会社 | Antenna built-in module, card type information device and manufacturing method thereof |
| CN101556655A (en) * | 2008-04-08 | 2009-10-14 | 株式会社日立制作所 | Radio frequency identification tag and method of fabricating the same |
| CN101308953A (en) * | 2008-07-04 | 2008-11-19 | 汤献维 | Special membrane and method for manufacturing radio-frequency label antenna |
| KR20100098272A (en) * | 2009-02-27 | 2010-09-06 | 이봉수 | A packaging box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103947040A (en) | 2014-07-23 |
| JP6126188B2 (en) | 2017-05-10 |
| MY166125A (en) | 2018-05-24 |
| JP2016034151A (en) | 2016-03-10 |
| WO2013037762A1 (en) | 2013-03-21 |
| JP6095070B2 (en) | 2017-03-15 |
| JP2014527375A (en) | 2014-10-09 |
| EP2756547B1 (en) | 2023-02-22 |
| EP2756547A1 (en) | 2014-07-23 |
| KR20140060358A (en) | 2014-05-19 |
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Application publication date: 20181023 |