CN108960393A - A kind of flat circle polarized electron label - Google Patents
A kind of flat circle polarized electron label Download PDFInfo
- Publication number
- CN108960393A CN108960393A CN201810735415.1A CN201810735415A CN108960393A CN 108960393 A CN108960393 A CN 108960393A CN 201810735415 A CN201810735415 A CN 201810735415A CN 108960393 A CN108960393 A CN 108960393A
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- China
- Prior art keywords
- antenna
- antenna oscillator
- polarized electron
- flat circle
- circle polarized
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Classifications
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- 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
- G06K19/07773—Antenna details
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (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 flat circle polarized electron labels, comprising: substrate is used to accommodate chip and antenna；Antenna, it is with short-circuited conducting sleeve and first antenna oscillator and the second antenna oscillator, the first antenna oscillator and the second antenna oscillator are respectively provided with two dipole arms connected each other in an electrically conductively, wherein the first antenna oscillator and the second antenna oscillator are connected to each other and arrangement intersected with each other, so that the dipole arm is respectively separated 90 ° of arrangements, and 90 ° of the phase phase difference for being sized so that adjacent dipole arm of the dipole arm；And chip, with antenna match and the chip layout is at the tie point of first antenna oscillator and the second antenna oscillator.By the electronic tag, polarization loss can be substantially reduced.Furthermore the flat circle polarized electron label 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 flat circle polarized electron mark
Label.
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, this kind of electronic tag has the larger polarization loss of 3dBi or so, and which has limited its application scenarios, drops
Low user experience.
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 flat circle polarized electron label is provided, by the electronic tag, can substantially reduce
The degree of correlation between sensitivity and stickup direction and/or placement direction, to significantly reduce polarization loss, and then extended RFID mark
The application of label and application prospect；Furthermore the flat circle polarized electron label also has high bandwidth and can flexibly set
The parameters such as impedance, geometry, working frequency.
According to the present invention, foregoing task is solved by a kind of flat circle polarized electron label, which includes:
Substrate is used to accommodate chip and antenna；
Antenna includes
Short-circuited conducting sleeve；And
First antenna oscillator and the second antenna oscillator, the first antenna oscillator and the second antenna oscillator are respectively provided with each other
The two conductively connected dipole arms and dipole arm is conductively connected with short-circuited conducting sleeve respectively, wherein described first day
Linear oscillator and the second antenna oscillator are connected to each other and arrangement intersected with each other, so that the dipole arm is respectively separated 90 ° of arrangements,
And 90 ° of the phase phase difference for being sized so that adjacent dipole arm of the dipole arm；And
Chip, with antenna match and the chip layout first antenna oscillator and the second antenna oscillator tie point
Place.
It is provided in a preferred embodiment of the invention, the center of short-circuited conducting sleeve is the same as first antenna oscillator and the second antenna oscillator
Tie point be overlapped.With this solution, the antenna structure of high rotational symmetry may be implemented, to further decrease polarization damage
It loses.
It provides in another preferred embodiment of the invention, adjusts antenna by adjusting the shape and/or size of short-circuited conducting sleeve
Reactance.By the preferred embodiment, the reactance of antenna can be neatly adjusted, thus realize the conjugate impedance match of antenna and chip,
Realize maximum transmitting-receiving power.Such as it can size (outer diameter and inner diameter), ring thickness (difference of internal-and external diameter), arc by adjusting short-circuited conducting sleeve
Degree etc. adjusts the reactance of antenna.
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 electrical length of adjacent dipole arm differs working frequency electromagnetic wave
Quarter-wave.For example, the size of four dipole arms can be followed successively by l0、l0+λ/4、l0、l0+ λ/4, wherein λ
For the wavelength or operation wavelength of working frequency electromagnetic wave.
It is provided in a preferred embodiment of the invention, the dipole arm of first antenna oscillator has waveform segment, the wave
Shape section is one of following shape: waveform segment shape, square waveform and broken line waveform, wherein by adjusting the waveform of dipole arm
The wave number of section or wave amplitude adjust the working frequency range of antenna.The shape of antenna oscillator can be neatly adjusted by the preferred embodiment
With the working frequency range of length and antenna.
It provides in another preferred embodiment of the invention, the dipole arm has load on top, 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.The overall shape of antenna and the work frequency of antenna can be neatly adjusted by the preferred embodiment
Section and impedance.
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.
The present invention at least have it is following the utility model has the advantages that in the present invention, since the dipole arm of antenna oscillator is complete each other
Orthogonal and their phase differs 90 ° each other, and chip is arranged in the intersections of four dipole arms just and points out, therefore right
The antenna has the structure of high rotational symmetry for chip and/or sender (recipient), and this greatly reduces receptions
Direction/influence of the stickup direction to sensitivity, so that the receiving and transmitting signal of electronic tag of the invention is not by pasting direction/put
Set the influence in direction；In addition, the setting of four dipole arms makes it possible to adjust geometry, the work of electronic tag for greater flexibility
The key parameters such as working frequency, antenna impedance；In addition, electronic tag according to the present invention has higher bandwidth, it is better adapted for counting
According to 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 flat circle polarized electron label according to the present invention；
Fig. 2 shows the antenna 2D gain diagrams of flat circle polarized electron label according to the present invention；And
Fig. 3 shows the antenna axial ratio schematic diagram of flat circle polarized electron label 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 circular polarisation electronic tag 10 according to the present invention.
With reference to Fig. 1, flat circle polarized electron label 10 includes antenna 300, chip 200 and substrate 100, the substrate 100
Such as be arranged at circle, for accommodating the antenna 300 and chip 200, wherein the antenna 300 is matched with chip 200.
Antenna includes for example, circular short-circuited conducting sleeve 350 and four dipole arms 310,320,330,340, wherein dipole
Arm 310,320 constitutes first antenna oscillator, and 330,340 constitute the second antenna oscillator.Short-circuited conducting sleeve 350 can for example be located at substrate 100
Middle part, wherein the center of short-circuited conducting sleeve 350 is using 100 center of substrate as the center of circle.Four dipole arms 310,320,330,340 one-tenth ten
Word interconnection and arrangement, wherein the center of short-circuited conducting sleeve 350 is preferably heavy with the crosspoint of dipole arm 310,320,330,340
It closes, thus reaches the antenna symmetry structure of height.Short-circuited conducting sleeve 350 is by four dipole arms 310,320,330,340 equably four
Point, i.e., adjacent dipole arm 310,320,330,340 is orthogonal or is arranged vertically and adjacent dipole arm 310,320,330,340
Between short-circuited conducting sleeve 350 equal length.Dipole arm 310 may include strip section 311, waveform segment 312 and be located at top
Load 313 at end；Similarly, dipole arm 320 may include strip section 321, waveform segment 322 and positioned at top end
Load 323, dipole arm 330 and 340 and so on.It should be noted here that other shapes of dipole arm is also to be contemplated that
's.Dipole arm 330 rotates 180 ° around the center of short-circuit annulus with dipole arm 310 and is symmetrical set.Dipole arm 340 is for example
It can be arranged around short-circuit circle ring center in 180 ° of rotational symmetry with dipole arm 320；Similarly, dipole arm 330 for example can be with
Dipole arm 310 is arranged around short-circuit circle ring center in 180 ° of rotational symmetry.Label antenna 300 by four dipole arms 310,
320,330,340 is orthogonal and phase difference is 90 ° to realize circular polarisation.In addition, four 310,320,330,340 electricity of dipole arm
Field vector amplitude is consistent.Isotropic transmitting-receiving sensitivity has been better achieved in this.
Short-circuited conducting sleeve 350 and four dipole arms 310,320,330,340 are orthogonal, and wherein short-circuited conducting sleeve 350 can be used for adjusting
The reactance of antenna 300, to facilitate realization impedance matching.Such as can by adjusting short-circuited conducting sleeve 350 size (outer diameter and inner diameter),
Ring thickness (difference of internal-and external diameter), radian etc. adjust the reactance of antenna 300.
The feeding point of antenna is located on the crosspoint of four dipole arms 310,320,330,340, and the feeding point is
Thus the binding position of label chip 200 realizes high rotational symmetry for chip and/or sender (recipient)
Antenna structure, to farthest reduce polarization loss.
350 shape of short-circuited conducting sleeve can be Q-RING, elliptical ring, polygon ring etc..
Other broken line shapes, waveform segment 312,322 can be added in each strip section 311,321 when label sizes are limited
It as needed can be arc-shaped wave, rectangular wave, shapes such as broken line wave, and the load 313,323 of top end can be according to substrate shape
Shape is set as arc, rectangular, round, fold-line-shaped, triangle, irregular shape etc. other shapes.Dipole arm 330,340
Strip section and waveform segment can be similarly arranged.
The material of antenna 300 may include this one kind in following material: silver, copper, aluminium or electrically conductive ink etc..Substrate 100
Material may include ceramics, it is FR4, resin glue ABS, polyvinylchloride, paper layer, rubber, timber, poly- to phenyl formic acid second two
The flexibility such as alcohol ester PET or polyimides PI or the plate of hard etc..
The size range of substrate 100 for example can be diameter 30mm to 120mm.
In above-described embodiment, the size of each section can be adjusted according to application demand, and when use can directly paste
On attachment.
The performance characteristics of flat circle polarized electron label according to the present invention are described below, wherein in the item of Fig. 1 embodiment
Test is compared under part.
Test equipment: Tagformance UHF test equipment and mating antenna (linear polarization), bracket etc.；
Label: flat circle polarized electron label 100；
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:
Test result shows that present invention sensitivity difference when different directions are placed is smaller (< 1dBi), and broader bandwidth is real
With property height.
Fig. 2 and Fig. 3 respectively illustrates the antenna 2D gain diagram and antenna of flat circle polarized electron label according to the present invention
Axis compares schematic diagram.
From the test result in Fig. 2 and Fig. 3 it is known that flat circle polarized electron label 10 according to the present invention is with excellent
Different gain and axis ratio.
The present invention at least have it is following the utility model has the advantages that in the present invention, since the dipole arm of antenna oscillator is complete each other
Orthogonal and their phase differs 90 ° each other, and chip is arranged in the intersections of four dipole arms just and points out, therefore right
The antenna has the structure of high rotational symmetry for chip and/or sender (recipient), and this greatly reduces receptions
Direction/influence of the stickup direction to sensitivity, so that the receiving and transmitting signal of electronic tag of the invention is not by pasting direction/put
Set the influence in direction；In addition, the setting of four dipole arms makes it possible to adjust geometry, the work of electronic tag for greater flexibility
The key parameters such as working frequency, antenna impedance；In addition, electronic tag according to the present invention has higher bandwidth, it is better adapted for counting
According to 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 flat circle polarized electron label, comprising:
Substrate is used to accommodate chip and antenna；
Antenna includes
Short-circuited conducting sleeve；And
First antenna oscillator and the second antenna oscillator, the first antenna oscillator and the second antenna oscillator are respectively provided with each other in an electrically conductive
Two dipole arms and the dipole arm of ground connection are conductively connected with short-circuited conducting sleeve respectively, wherein the first antenna is shaken
Son and the second antenna oscillator are connected to each other and arrangement intersected with each other, so that the dipole arm is respectively separated 90 ° of arrangements, and
90 ° of the phase phase difference for being sized so that adjacent dipole arm of the dipole arm；And
Chip, with antenna match and the chip layout is at the tie point of first antenna oscillator and the second antenna oscillator.
2. flat circle polarized electron label according to claim 1, wherein the center of short-circuited conducting sleeve with first antenna oscillator with
The tie point of second antenna oscillator is overlapped.
3. flat circle polarized electron label according to claim 1, wherein adjusting day by adjusting the size of short-circuited conducting sleeve
The reactance of line.
4. flat circle polarized electron label according to claim 1, wherein short-circuited conducting sleeve is one of following shape: round, ellipse
Round, rectangular and polygon.
5. flat circle polarized electron label according to claim 1, wherein the electrical length of adjacent dipole arm differs work
The quarter-wave of working frequency electromagnetic wave.
6. flat circle polarized electron label according to claim 1, wherein the dipole arm of first antenna oscillator has wave
Shape section, the waveform segment is one of following shape: waveform segment shape, square waveform and broken line waveform, wherein by adjusting dipole
The wave number of the waveform segment of sub- arm or wave amplitude adjust the working frequency range of antenna.
7. flat circle polarized electron label according to claim 1, wherein the dipole arm has load, institute on top
It states and is loaded as one of following shape: arc, rectangular, round and fold-line-shaped, wherein being adjusted by adjusting the size of the load
All day line working frequency range and antenna impedance.
8. flat circle polarized electron label according to claim 1, wherein the substrate is one of following shape: square
Shape, ellipse and polygon.
9. flat circle polarized electron label according to claim 1, wherein the material of the antenna includes in the following terms
It is one or more: silver, copper, aluminium and electrically conductive ink.
10. flat circle polarized electron label according to claim 1, wherein the material of the substrate includes in the following
It is one or more: it is ceramics, FR4, resin glue ABS, polyvinylchloride, paper layer, rubber, timber, poly- to phenyl formic acid ethylene glycol
Ester PET and polyimides PI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735415.1A CN108960393A (en) | 2018-07-06 | 2018-07-06 | A kind of flat circle polarized electron label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735415.1A CN108960393A (en) | 2018-07-06 | 2018-07-06 | A kind of flat circle polarized electron label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108960393A true CN108960393A (en) | 2018-12-07 |
Family
ID=64486090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810735415.1A Pending CN108960393A (en) | 2018-07-06 | 2018-07-06 | A kind of flat circle polarized electron label |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567480A (en) * | 2008-04-25 | 2009-10-28 | 中兴通讯股份有限公司 | Circular-polarized electronic label antenna and design method thereof |
| US20120162021A1 (en) * | 2010-12-23 | 2012-06-28 | Industrial Cooperation Foundation Chonbuk National University | Circularly polarized antenna with wide beam width |
| CN102931479A (en) * | 2012-11-02 | 2013-02-13 | 大连海事大学 | Compact type plane dual-band omnidirectional circularly polarized antenna |
| CN102956967A (en) * | 2012-10-24 | 2013-03-06 | 深圳大学 | Circularly polarized RFID (Radio Frequency Identification Device) tag antenna |
| CN204288260U (en) * | 2014-08-27 | 2015-04-22 | 北京中电华大电子设计有限责任公司 | A kind of ultrabroad band electronic tag |
| 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 CN201810735415.1A patent/CN108960393A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567480A (en) * | 2008-04-25 | 2009-10-28 | 中兴通讯股份有限公司 | Circular-polarized electronic label antenna and design method thereof |
| US20120162021A1 (en) * | 2010-12-23 | 2012-06-28 | Industrial Cooperation Foundation Chonbuk National University | Circularly polarized antenna with wide beam width |
| CN102956967A (en) * | 2012-10-24 | 2013-03-06 | 深圳大学 | Circularly polarized RFID (Radio Frequency Identification Device) tag antenna |
| CN102931479A (en) * | 2012-11-02 | 2013-02-13 | 大连海事大学 | Compact type plane dual-band omnidirectional circularly polarized antenna |
| CN204288260U (en) * | 2014-08-27 | 2015-04-22 | 北京中电华大电子设计有限责任公司 | A kind of ultrabroad band electronic tag |
| 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 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190906 Address after: 610015 China (Sichuan) Free Trade Pilot Zone Applicant after: Sichuan Huada Hengxin Technology Co., Ltd. Address before: Room 305, Block Y1, 112 Liangxiu Road, Pudong New Area, Shanghai, 201203 Applicant before: HUADA SEMICONDUCTOR CO., LTD. |
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Address after: Floor 17, unit 2, building 6, 171 hele 2nd Street, Chengdu hi tech Zone, Chengdu pilot Free Trade Zone, Sichuan 610212 Applicant after: Huada Hengxin Technology Co.,Ltd. Address before: 610015 China (Sichuan) pilot Free Trade Zone 1-3 / F, block B, building 4, 200 Tianfu 5th Street, Chengdu hi tech Zone Applicant before: Sichuan Huada Hengxin Technology Co.,Ltd. |
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