CN109102056A - A kind of circular polarisation electronic tag - Google Patents
A kind of circular polarisation electronic tag Download PDFInfo
- Publication number
- CN109102056A CN109102056A CN201810735394.3A CN201810735394A CN109102056A CN 109102056 A CN109102056 A CN 109102056A CN 201810735394 A CN201810735394 A CN 201810735394A CN 109102056 A CN109102056 A CN 109102056A
- Authority
- CN
- China
- Prior art keywords
- antenna
- electronic tag
- support arm
- circular polarisation
- tag according
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07745—Mounting details of integrated circuit chips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/0775—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card arrangements for connecting the integrated circuit to the antenna
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a kind of circular polarisation electronic tags, comprising: substrate is used to accommodate chip and antenna；Chip, with antenna match；And antenna, short-circuited conducting sleeve is included, the chip is arranged on the short-circuited conducting sleeve；And support arm there are four antenna oscillator, the antenna oscillator and short circuit loop coupling and tools, wherein the support arm is respectively separated 90 ° of arrangements and the phase for being sized so that the support arm of the support arm differs 90 ° respectively.By the electronic tag, sensitivity can be substantially reduced and paste the degree of correlation between direction and/or placement direction, thus the application of significant extended RFID tag and application prospect；Furthermore the circular polarisation electronic tag also has high bandwidth and can flexibly set the parameters such as impedance, geometry, working frequency.
Description
Technical field
Present invention relates in general to the fields radio frequency identification (RFID), in particular to a kind of circular polarisation electronic tag.
Background technique
With the rise of Internet of Things, RFID (radio frequency identification) technology as one of key technology obtains in daily life
It is widely applied, for example is applied to the fields such as logistics, anti-fake, traffic, storage.The key parameter of RFID technique first is that
The sensitivity of RFID electronic label directly determines application and application prospect of the RFID technique in technology of Internet of things.
Currently, RFID electronic label mainly uses linear polarized antenna.Sensitivity and signal due to linear polarized antenna receive
Direction is highly relevant, therefore must be with receiving side signal to phase using the stickup direction of the RFID electronic label of linear polarized antenna
Match.In practical applications, the electronic tag has larger polarization loss, this has seriously affected its sensitivity, limits it and answers
With scene, user experience is reduced.
On the contrary, circular polarized antenna sensitivity and receiving side signal to the degree of correlation it is lower, but at present in practical application
In also seldom by circular polarized antenna be applied to RFID tag.In addition, limited circular polarisation electronic tag application in, sensitivity with
The degree of correlation between direction and/or placement direction is pasted still not as low as satisfactory level.
Summary of the invention
The task of the present invention is a kind of circular polarisation electronic tag is provided, by the electronic tag, can substantially reduce sensitive
The degree of correlation between degree and stickup direction and/or placement direction, thus before the application of significant extended RFID tag and application
Scape；Furthermore the circular polarisation electronic tag also has high bandwidth and can flexibly set impedance, geometry, working frequency etc.
Parameter.
According to the present invention, foregoing task is solved by a kind of circular polarisation electronic tag, which includes:
Substrate is used to accommodate chip and antenna；
Chip, with antenna match；And
Antenna includes
Short-circuited conducting sleeve arranges the chip on the short-circuited conducting sleeve；And
Antenna oscillator, the antenna oscillator and short-circuit loop coupling and have there are four support arm, wherein the support arm respectively between
Every 90 ° of arrangements and 90 ° of the phase phase difference for being sized so that adjacent support arm of the support arm.
It is provided in an expansion scheme of the invention, wherein short-circuited conducting sleeve is one of following shape: round, ellipse, side
Shape and polygon.Such as short-circuited conducting sleeve can have the regular shape of regular pentagon, regular hexagon etc.
It is provided in a preferred embodiment of the invention, the four of the electrical length difference working frequency electromagnetic wave of adjacent support arm
/ mono- wavelength.For example, the size of four support arms can be followed successively by l0、l0+λ/4、l0、l0+ λ/4, wherein λ is work frequency
The wavelength or operation wavelength of rate electromagnetic wave.
It is provided in an expansion scheme of the invention, the substrate is one of following shape: square, oval and more
Side shape.
It is provided in another expansion scheme of the invention, the material of the antenna includes one or more in the following terms
: silver, copper, aluminium and electrically conductive ink.
It is provided in another expansion scheme of the invention, the material of the substrate includes one or more in the following
: ceramics, FR4, resin glue ABS, polyvinylchloride, paper layer, rubber, timber, gather to phenyl formic acid glycol ester PET and
Polyimides PI.
It is provided in a preferred embodiment of the invention, the impedance of the chip and the impedance of the antenna are conjugated.Pass through
The preferred embodiment, can will because caused by mismatch loss be reduced to it is minimum.
It is provided in an expansion scheme of the invention, the support arm is one of following shape: rectangle and broken line
Shape.
It is provided in a preferred embodiment of the invention, the support arm has waveform segment, and the waveform segment is following shape
One of: arc waveform, square waveform and broken line waveform, wherein the wave number or wave amplitude by adjusting the waveform segment of support arm are adjusted
All day line working frequency range.By the preferred embodiment, the size of antenna can be not only compressed by setting waveform segment, it can be with
The working frequency range of antenna is adjusted by adjusting the size of waveform segment.
It is provided in a preferred embodiment of the invention, wherein the support arm has load on top, it is described to be loaded as down
One of column shape: arc, rectangular, round and fold-line-shaped, wherein adjusting the work of antenna by adjusting the size of the load
Make the impedance of frequency range and antenna.By the preferred embodiment, the shape of support arm can be flexibly set by loading, and pass through
It loads to adjust the impedance of antenna.
The present invention at least have it is following the utility model has the advantages that in the present invention, since antenna oscillator has physical location and phase
90 ° of four support arms are differed each other, therefore its sensitivity is not influenced substantially by receiving direction, so that electricity of the invention
The receiving and transmitting signal of subtab is not influenced by direction/placement direction is pasted；In addition, the setting of four support arms make it possible to it is more flexible
Ground adjusts the key parameters such as geometry, working frequency, the antenna impedance of electronic tag；In addition, electronics mark according to the present invention
Label have higher bandwidth, are better adapted for data communication.
Detailed description of the invention
With reference to specific embodiment, the present invention is further explained with reference to the accompanying drawing.
Fig. 1 shows the schematic diagram of the first embodiment of circular polarisation electronic tag according to the present invention；And
Fig. 2 shows the schematic diagrames of the second embodiment of circular polarisation electronic tag according to the present invention.
Specific embodiment
It should be pointed out that each component in each attached drawing may be shown in which be exaggerated in order to illustrate, and it is not necessarily ratio
Example is correctly.In the drawings, identical appended drawing reference is equipped with to the identical component of identical or function.
In the present invention, unless otherwise indicated, " on being arranged in ... ", " being arranged in ... top " and " on being arranged in ... "
Do not exclude the case where there are intermediaries therebetween.
In the present invention, each embodiment is intended only to illustrate the solution of the present invention, and is understood not to restrictive.
In the present invention, unless otherwise indicated, quantifier "one", " one " and the scene for not excluding element.
It is also noted herein that in an embodiment of the present invention, for it is clear, for the sake of simplicity, might show only one
Sub-unit or component, but those skilled in the art are it is understood that under the teachings of the present invention, it can be according to concrete scene
Need to add required component or component.
Fig. 1 shows the schematic diagram of the first embodiment 100 of circular polarisation electronic tag according to the present invention.
With reference to Fig. 1, anti-interference RFID electronic label includes antenna 3000, chip 2000 and substrate 1000 in the present embodiment,
The substrate 1000 this squarely be arranged, for accommodating the antenna 3000 and chip 2000, wherein the antenna 3000 with
Chip 200 matches.
The antenna includes that for example, circular short-circuited conducting sleeve 3100 and antenna oscillator, the short-circuited conducting sleeve 3100 is located at the base
The middle part of plate 1000, the center of short-circuited conducting sleeve 3100 is using 1000 center of substrate as the center of circle.The antenna oscillator is equipped with upper and lower arms,
The upper arm is made of 1/4 annulus 3213 and two support arms 3211,3212, wherein 1/4 annulus 3213 is with 1000 center of substrate
The center of circle, close to short-circuited conducting sleeve 3100.Here, the annulus 3213 and annulus 3223 of antenna oscillator are not electrically connected directly with short-circuited conducting sleeve 3100
It connects, but electromagnetically couples to each other.A support arm 3211 in two support arms includes strip and the load 3214 in top,
Wherein top load 3214 for one it is rectangular with circular arc cut out go one jiao after irregular shape, another support arm 3212 include three arcs
Shape wave and load 3215 in top, the wherein top end of the load 3215 and support arm 3211 of the top end of support arm 3212
It is identical to load 3214, but two support arm central axes differ 90 °, and the electrical length ratio of support arm 3212 around the center of substrate 1000
Long λ/4 of the electrical length of support arm 3211, wherein λ is the wavelength or operation wavelength of working frequency electromagnetic wave.The lower arm with it is upper
Arm rotates 180 ° around substrate center and is symmetrical set, i.e., the support arm 3221 of lower arm and support arm 3222 are differed around the center of substrate 1000
90 ° of arrangements, and the electrical length of support arm 3221 and support arm 3222 differs λ/4.1/4 annulus 3213,3223 of upper lower arm connects
Together.That side backwards to 1/4 annulus 3213,3223 of chip 2000 for example on short-circuited conducting sleeve 3100.The day of the label 100
By four support arms, successively to be 90 ° realize circular polarisation to line 3000 for physical location and phase difference.
1000 shape and size specific requirement of substrate setting.Such as in one embodiment, substrate 1000 can be arranged to square
Shape, size range are, for example, long 30mm to 850mm, width 30mm to 85mm.The material of substrate 1000 can be ceramics, FR4, tree
Rouge glue ABS, polyvinylchloride, paper layer, rubber, timber, gather to flexibilities such as phenyl formic acid glycol ester PET or polyimides PI
Or plate of hard etc..It, can due to the dielectric constant of 1000 material of substrate and the efficiency of transmission of thickness effect antenna 3000
Material of the relatively flexible isolation material as substrate 1000 is further chosen, and substrate is arranged according to the size of antenna 3000
1000 thickness, such as 0.1 to 0.3mm.
1/4 annulus 3213,3223 of short-circuited conducting sleeve 3100 and upper lower arm 3210,3220 is same using substrate center as the center of circle
Heart annulus, and two are close, size range for example in 0.2mm between 5mm, short-circuited conducting sleeve 3100 and upper lower arm 3210,3220
1/4 annulus 3213,3223 can also change Q-RING, elliptical ring, polygon ring etc. into.It such as in one embodiment, can will be short
Road ring is embodied as straight-flanked ring, and 1/4 annulus is implemented as a right angle, i.e. 1/4 straight-flanked ring.
It in one embodiment, can be by adjusting 3100 size of short-circuited conducting sleeve and/or the annulus of short-circuited conducting sleeve 3100 and 1/4
3213, the spacing between 3223 and/or 3214,3215,3224,3225 size is loaded to adjust the impedance of antenna, thus real
Conjugate impedance match between existing antenna 3000 and chip 2000.Conjugate impedance match refers in the case where signal source is given, antenna impedance
It is conjugated with chip impedance, output power is maximum at this time.In the present embodiment, the antenna 3000 and core of circular polarisation electronic tag 100
The conjugate impedance match of piece 2000 refers to the impedance of antenna 3000 and the impedance conjugate impedance match of chip 2000, thus Maximum Power Output.
The impedance of antenna 3000 and the impedance conjugation of chip 2000 can be by adjusting 3100 size of short-circuited conducting sleeve, short-circuited conducting sleeve 3100 and coupling rings
3213, it 3223 spacing and/or loads 3214,3215,3224,3225 size and realizes.Such as pass through selection attachment
Size and material, reduction or the size or width that improve ring, make the impedance of antenna 3000 and the impedance of chip 2000 match,
To achieve the purpose that Maximum Power Output.The output power of antenna 3000 is maximum, and transmission range correspondingly extends, thus can be into
The reading/writing distance of one step extension circular polarisation electronic tag.
In one embodiment, can also by adjust indentation support arm 3212 and 3222 arc wave band wave number or
Wave amplitude, and/or 3214,3215,3224,3225 size is loaded to adjust the working frequency range of antenna 3000 and axis ratio and finely tune day
The impedance of line 3000, to adapt to hyperfrequency use scope and achieve the purpose that extend transmission distance.For example, adjustable arc
The wave amplitude of wave band 3211 adjusts working frequency range, so that the center frequency point for changing label is fallen in 902 to 928MHz.In another embodiment
Also it can provide the size of adjustment load to adjust the working frequency range and antenna impedance of antenna, used with adapting to above-mentioned hyperfrequency
Range.
Wherein the shape of support arm 3211 includes being not limited to strip, and other fold-line-shapeds can also be added to reduce size
Formula.Support arm 3222 is not limited to arc-shaped wave, can also be other broken line forms, load be also possible to irregular shape, as arc,
Rectangular, round, fold-line-shaped etc.；The upper arm and antenna oscillator lower arm of antenna oscillator are for example arranged in rotational symmetry.
3000 material of antenna includes one of following material: silver, copper, aluminium or electrically conductive ink etc..The material of substrate 1000
Including ceramics, FR4, resin glue ABS, polyvinylchloride, paper layer, rubber, timber, gather to phenyl formic acid glycol ester PET or poly-
The flexibility such as polyimide PI or the plate of hard etc..
The size range of substrate 1000 is, for example, long 30mm to 85mm, wide 330mm to 85mm.
In above-described embodiment, the size of each section can be adjusted according to application demand, and when use can directly paste
On attachment.
Fig. 2 shows the schematic diagrames of the second embodiment 2000 of circular polarisation electronic tag according to the present invention.
The difference of the embodiment 100 of embodiment 200 and Fig. 1 of Fig. 2 is only in that, in embodiment 200, antenna oscillator
1/4 annulus 3213,3223 does not couple not instead of electromagnetically with short-circuited conducting sleeve 3100, connects to direct conduction.
The performance characteristics of circular polarisation electronic tag according to the present invention are described below, wherein the item of the embodiment 200 in Fig. 2
Test is compared under part.
Test equipment: Tagformance UHF test equipment and mating antenna (linear polarization), bracket etc.；
Label: this circular polarisation electronic tag 200；
Measuring distance: 30cm；
Test condition: the center of label is placed on to the center of linear polarization test antenna, test is around antenna every time when test
Central point rotates clockwise 45 °, totally 8 test orientation.
Test result is shown in Table 1:
Table 1: test result
Test result shows that present invention sensitivity difference when different directions are placed is smaller (< 1dBi), and broader bandwidth is real
With property height.
The present invention at least have it is following the utility model has the advantages that in the present invention, since antenna oscillator has physical location and phase
90 ° of four support arms are differed each other, therefore its sensitivity is not influenced substantially by receiving direction, so that electricity of the invention
The receiving and transmitting signal of subtab is not influenced by direction/placement direction is pasted；In addition, the setting of four support arms make it possible to it is more flexible
Ground adjusts the key parameters such as geometry, working frequency, the antenna impedance of electronic tag；In addition, electronics mark according to the present invention
Label have higher bandwidth, are better adapted for data communication.
Although some embodiments of the present invention are described in present specification, to art technology
Personnel are it is readily apparent that these embodiments are merely possible to shown in example.It may occur to persons skilled in the art that numerous
Variant schemes, alternative solution and improvement project without beyond the scope of this invention.The appended claims are intended to limit this hair
Bright range, and cover the method and structure in the range of these claims itself and its equivalents whereby.
Claims (10)
1. a kind of circular polarisation electronic tag, comprising:
Substrate is used to accommodate chip and antenna；
Chip, with antenna match；And
Antenna includes
Short-circuited conducting sleeve arranges the chip on the short-circuited conducting sleeve；And
Antenna oscillator, the antenna oscillator and short-circuit loop coupling and have that there are four support arms, wherein the support arm is respectively separated 90 °
90 ° of the phase phase difference for being sized so that adjacent support arm of arrangement and the support arm.
2. circular polarisation electronic tag according to claim 1, wherein short-circuited conducting sleeve is one of following shape: round, ellipse,
Rectangular and polygon.
3. circular polarisation electronic tag according to claim 1, wherein the electrical length difference working frequency electricity of adjacent support arm
The quarter-wave of magnetic wave.
4. circular polarisation electronic tag according to claim 1, wherein the substrate is one of following shape: square, ellipse
Round and polygon.
5. circular polarisation electronic tag according to claim 1, wherein the material of the antenna includes one in the following terms
Item is multinomial: silver, copper, aluminium and electrically conductive ink.
6. circular polarisation electronic tag according to claim 1, wherein the material of the substrate includes one in the following
Item is multinomial: ceramics, resin glue ABS, polyvinylchloride, paper layer, rubber, timber, gather to phenyl formic acid glycol ester FR4
PET and polyimides PI.
7. circular polarisation electronic tag according to claim 1, wherein the impedance of the chip and the impedance of the antenna are total
Yoke.
8. circular polarisation electronic tag according to claim 1, wherein the support arm is one of following shape: rectangle, with
And fold-line-shaped.
9. circular polarisation electronic tag according to claim 1, wherein the support arm has waveform segment, under the waveform segment is
One of column shape: arc waveform, square waveform and broken line waveform, wherein by adjusting the wave number or wave of the waveform segment of support arm
Width adjusts the working frequency range of antenna.
10. circular polarisation electronic tag according to claim 1, wherein the support arm has load, the load on top
For one of following shape: arc, rectangular, round and fold-line-shaped, wherein adjusting antenna by adjusting the size of the load
Working frequency range and antenna impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735394.3A CN109102056A (en) | 2018-07-06 | 2018-07-06 | A kind of circular polarisation electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735394.3A CN109102056A (en) | 2018-07-06 | 2018-07-06 | A kind of circular polarisation electronic tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109102056A true CN109102056A (en) | 2018-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810735394.3A Pending CN109102056A (en) | 2018-07-06 | 2018-07-06 | A kind of circular polarisation electronic tag |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956967A (en) * | 2012-10-24 | 2013-03-06 | 深圳大学 | Circularly polarized RFID (Radio Frequency Identification Device) tag antenna |
| CN104408512A (en) * | 2014-08-27 | 2015-03-11 | 北京中电华大电子设计有限责任公司 | Ultra-wide frequency band electronic tag |
| CN205452530U (en) * | 2015-12-23 | 2016-08-10 | 华大半导体有限公司 | Plane circular polarization tag antenna |
| CN106654526A (en) * | 2016-11-25 | 2017-05-10 | 北京航空航天大学 | Lower-specific absorption rate circular polarization conformable antenna and manufacturing method |
| CN107977700A (en) * | 2017-12-21 | 2018-05-01 | 深圳市鸿陆技术有限公司 | A kind of metal electronic tag |
-
2018
- 2018-07-06 CN CN201810735394.3A patent/CN109102056A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956967A (en) * | 2012-10-24 | 2013-03-06 | 深圳大学 | Circularly polarized RFID (Radio Frequency Identification Device) tag antenna |
| CN104408512A (en) * | 2014-08-27 | 2015-03-11 | 北京中电华大电子设计有限责任公司 | Ultra-wide frequency band electronic tag |
| CN205452530U (en) * | 2015-12-23 | 2016-08-10 | 华大半导体有限公司 | Plane circular polarization tag antenna |
| CN106654526A (en) * | 2016-11-25 | 2017-05-10 | 北京航空航天大学 | Lower-specific absorption rate circular polarization conformable antenna and manufacturing method |
| CN107977700A (en) * | 2017-12-21 | 2018-05-01 | 深圳市鸿陆技术有限公司 | A kind of metal electronic tag |
Non-Patent Citations (3)
| Title |
|---|
| GAETANO MARROCCO: ""The art of UHF RFID antenna design: impedance-matching and size-reduction techniques"", 《IEEE ANTENNAS AND PROPAGATION MAGAZINE》 * |
| 李广立 等: ""高频天线性能增强方法研究"", 《集成电路应用》 * |
| 蔺炜: ""RFID标签天线及北斗四臂螺旋天线研究"", 《中国优秀硕士学位论文全文数据库(信息科技辑)》 * |
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