CN206115473U - No chip RFID label of zigzag pole change and system - Google Patents
No chip RFID label of zigzag pole change and system Download PDFInfo
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- CN206115473U CN206115473U CN201620877999.2U CN201620877999U CN206115473U CN 206115473 U CN206115473 U CN 206115473U CN 201620877999 U CN201620877999 U CN 201620877999U CN 206115473 U CN206115473 U CN 206115473U
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- China
- Prior art keywords
- label
- minor matters
- zigzag
- rfid label
- horizontal
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Abstract
The utility model discloses a no chip RFID chip of zigzag pole change and system, including label paster unit, metal ground board and individual layer medium base plate, label paster unit is located the upper surface of individual layer medium base plate, the metal ground board is located the lower surface of individual layer medium base plate, label paster unit comprises two horizontal minor matters and vertical minor matters, the both ends of two vertical minor matters of horizontal minor matters difference perpendicular to, label paster unit is the zigzag structure. The utility model has the advantages of little shapeization, interference killing feature by force, easily detect in actual environment and the easy batch production of simple structure.
Description
Technical field
The utility model is related to chipless RFID field, and in particular to a kind of zigzag polarization chipless RFID label and
System.
Background technology
RF identification (RFID) by microwave signal identification specific objective and reads and writes related data as a kind of, and need not
The wireless recognition technique of machinery or optical contact is set up between identifying system and specific objective, range of application is increasingly extensive.
General radio-frequency recognition system is made up of the part such as reader, application system and label, and wherein label plays key player：
As Internet of Things is in the extensive application of the industries such as traffic, logistics, industry and retailing, the article number for adhering to RFID tag is needed
Amount steeply rises, and one of following development trend of RFID tag is for replacing bar code, because relative to existing bar
For shape code technology, RFID tag has the advantages such as big data capacity, accessible reading and batch detection, can be better achieved
Automation to stock is tracked.With the large-scale application of billions of RFID tags, the portion of whole RFID system
Administration's expense is by depending on the cost of RFID tag.And it is traditional have chip tag due in structure comprising integrated circuit and encoding and decoding
Chip causes manufacturing cost higher, it is impossible to meet the requirement of large-scale mass production and application.Chipless RFID label is due to system
Make low cost, be adapted to the reasons such as batch production, it has also become the current focus of research, mainly have that time domain is code-shaped at present, after electromagnetism
To the type such as scatter-type and near field print wire ring type.Synthetic operation distance, data capacity, size and working frequency range etc. because
Element considers, is the main class shape of current application using the back scattering type chipless RFID label of Frequency Domain Coding.
Except with addition to higher code capacity, label must also possess in actual environment can be by for chipless RFID label
Read and the simple characteristic of collimation technique.At present chipless RFID system, process is surveyed in two steps in label, the first step (calibration
Detection) background environment first to existing without label carries out detection and obtains data S1, and second step is right under identical background environment
Label carries out detection and obtains data S2, and data S2-S1 that removing background environment affects are final valid data.Wherein data S1
The impact of object accompanying by label is included, if therefore adhering to material, size etc. of object and changing and need to recalibrate.And have
The label of " polarization " technology (depolarizing technique), need not include the thing accompanying by label during calibration detection
Body, obviates because the object of label attachment has the trouble that very big uncertainty brings, and so just can greatly simplify calibration
Technology.And dual-mode antenna is mutually orthogonal at reader end, the isolation of dual-mode antenna is improve.
Utility model content
In order to overcome the shortcoming of prior art presence with a kind of not enough, zigzag polarization chipless of the utility model offer
RFID tag and system.
The utility model is adopted the following technical scheme that：
A kind of zigzag polarization chipless RFID label, including label chip unit, metal floor and single-layer medium base
Plate, the label chip unit is located at the upper surface of single-layer medium substrate, and the metal floor is located under single-layer medium substrate
Surface, the label chip unit is made up of two horizontal minor matters and a longitudinal minor matters, and described two horizontal minor matters are hung down respectively
Directly in the two ends of longitudinal minor matters, the label chip unit is in zigzag structure.
The label chip unit is stepped impedance structure, and the width of described two horizontal minor matters is identical, and two is horizontal
The width of minor matters is different from the width of longitudinal minor matters.
The width of the horizontal minor matters is 1 millimeter, and the width of longitudinal minor matters is 0.5 millimeter.
The length for changing horizontal minor matters or the length for changing longitudinal minor matters further change the position of resonance frequency, and pass through
The presence or absence of label of correspondence resonance location realizes respectively the coding of " 1 " or " 0 "；
It is situated between in same by the way that the tag unit of the horizontal minor matters of different length or longitudinal minor matters of different length is etched
Increase code capacity on matter substrate.
The system that a kind of zigzag polarization chipless RFID label is constituted, including reader, transmitting antenna, reception antenna
And label, the transmitting antenna is mutually perpendicular to reception antenna, and the label is by least one zigzag polarization chipless RFID
Label is constituted.
The different or longitudinal minor matters length of the horizontal minor matters length of two or more zigzag polarization chipless RFID label is not
Together.
The beneficial effects of the utility model：
(1) dual-mode antenna RX, the TX for adopting at reader end is mutually orthogonal, so as to improve the isolation of dual-mode antenna；
(2) label has higher antijamming capability, is easy to be detected in complicated actual environment, because actual rings
The electromagnetic wave of object reflection that may be present is still vertical polarization around label in border.
(3) calibration process in detection process is simplified：Need not consider which kind of object label is attached on.
(4) label construction of the present utility model is simple, is easy to batch production.And because structure carries metal floor, therefore
With certain anti-metal ability, can be attached on metal object.
Description of the drawings
Fig. 1 is the structure chart of the system that a kind of zigzag polarization chipless RFID label of the present utility model is constituted；
Fig. 2 is that the utility model realizes bowing for the zigzag stepped impedance formula polarization chipless RFID label that 1-bit is encoded
View；
Fig. 3 is the side view of the utility model Fig. 2；
Fig. 4 is that the utility model realizes the zigzag stepped impedance formula polarization chipless RFID label that 3-bit is encoded
Top view；
Fig. 5 is the parameter schematic diagram of Fig. 2；
Fig. 6 is the parameter schematic diagram of Fig. 4；
Fig. 7 is that zigzag stepped impedance formula polarization chipless RFID label realizes that the RCS of 1-bit codings " 1 " is imitated in Fig. 2
True figure；
Fig. 8 is that zigzag stepped impedance formula polarization chipless RFID label realizes 3-bit fgs encoders " 111 " in Fig. 4
RCS analogous diagrams.
Specific embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but reality of the present utility model
Apply mode not limited to this.
Embodiment
As shown in figure 1, the system that a kind of zigzag polarization chipless RFID label is constituted, including reader, transmitting antenna
TX and reception antenna RX and label, the transmitting antenna TX and reception antenna RX is mutually perpendicular to, the transmitting antenna TX transmittings
Vertically polarized wave can be connect as request signal, the horizontal polarized components that this signal is fired back after label by reception antenna RX
Receive, the RCS of the horizontal component for receiving shows as obvious resonance crest in some specific frequencies of frequency domain, be thus capable of achieving one
The coding of positioning number.
As shown in Figures 2 and 3, the label is made up of at least one zigzag polarization chipless RFID label, zigzag
Polarization chipless RFID label includes label chip unit 2, metal floor 3 and single-layer medium substrate 1, the label paster list
Unit 2 is located at the upper surface of single-layer medium substrate 1, and the metal floor 3 is located at the lower surface of single-layer medium substrate 1, the label
Chip unit 2 is by two horizontal minor matters 2H1、2H2And longitudinal minor matters 2V are constituted, described two horizontal minor matters are respectively perpendicular to
The two ends of longitudinal minor matters, two horizontal minor matters 2H1、2H2Direction conversely, the label chip unit be in zigzag structure.
The label chip unit is stepped impedance structure, and the width of described two horizontal minor matters is identical, and two is horizontal
The width of minor matters is different from the width of longitudinal minor matters.
By changing horizontal minor matters 2H1、2H2Or the length of vertical portion 2V is changing the position of resonance frequency, such as Fig. 6
Shown, three label chip units with the horizontal minor matters of different length realize resonance respectively at three different frequent points,
Therefore three can be encoded, and the coding of " 0 " or " 1 " is realized respectively by correspondingly the presence or absence of short dipole of resonance location.
In the present embodiment, the medium substrate is using high frequency sheet material Taconic TLX-8, its relative dielectric constant
2.55, electrical loss angle tangent value is 0.0019.The size of medium substrate is directly proportional with the coding digit that label is realized, thickness H is equal
For 0.7mm.As shown in figure 5, the square medium substrate length that the label chip unit of coding one is located：L=8mm；Such as Fig. 6
It is shown, encode the medium substrate length that the label of three is adopted：X=12mm, width：Y=10mm, the interval between tag unit
Distance：Dx=dy=1mm.
As shown in figure 5, a kind of design parameter of zigzag stepped impedance formula polarization chipless RFID label chip unit is
The length of vertical minor matters 2V：L1=4mm, width：W1=0.5mm；Horizontal minor matters 2H1、2H2Length：L2=2mm, width：W2
=1mm.A kind of zigzag stepped impedance polarization chipless RFID label shown in Fig. 2 realizes that the RCS of the structure that 1-bit is encoded is imitated
As shown in fig. 7, solid line is cross polarization part, dotted line is coplanar polarized portions to true figure, and the RCS spectrograms of cross polarization can be real
Polarization chipless RFID system shown in existing Fig. 1, i.e. bold portion can be used to carry out Frequency Domain Coding, and its working frequency range position
In 6GHz-16GHz.
To increase code capacity, can be by the way that the chip unit of the horizontal minor matters of different length or vertical portion be rationally etched
On sizeable medium substrate.Label as shown in Figure 4 is then to form different three by changing the length of horizontal minor matters
Individual chip unit T1, T2 and T3, according to common Frequency Domain Coding 3-bit codings are capable of achieving, and it is in 6GHz-16GHz frequency ranges
RCS analogous diagrams as shown in figure 8, the chip unit that all resonance peaks and in Fig. 4 are marked is corresponded, again may be by shifting
Except a certain unit realizes the coding of " 0 ".
The label has miniaturization, strong antijamming capability, be easy in actual environment detection and simple structure is easy to batch
The advantages of amount production.
The utility model adopts polarization-agile technology, by the RCS component (cross on detection orthogonal direction in practical application
RCS), the quadrature component contains coding information.Whole process can be described generally as：Reader is hung down by transmitting antenna TX transmittings
, used as request signal, the vertically polarized wave is after the label with polarization characteristic in cross polarization direction for straight polarized wave
(horizontal direction) has the RCS components of higher level, and this orthogonal RCS component occurs significantly in specific resonance frequency
Resonance crest, i.e., orthogonal RCS components have coding information.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not by described
The restriction of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.
Claims (5)
1. a kind of zigzag polarization chipless RFID label, it is characterised in that including label chip unit, metal floor and list
Layer medium substrate, the label chip unit is located at the upper surface of single-layer medium substrate, and the metal floor is located at single-layer medium
The lower surface of substrate, the label chip unit is made up of two horizontal minor matters and a longitudinal minor matters, described two horizontal branches
Section is respectively perpendicular to the two ends of longitudinal minor matters, and the label chip unit is in zigzag structure.
2. a kind of zigzag polarization chipless RFID label according to claim 1, it is characterised in that the label patch
Blade unit is stepped impedance structure, and the width of described two horizontal minor matters is identical, width and the longitudinal direction minor matters of two horizontal minor matters
Width it is different.
3. a kind of zigzag polarization chipless RFID label according to claim 2, it is characterised in that the horizontal branch
The width of section is 1 millimeter, and the width of longitudinal minor matters is 0.5 millimeter.
4. the system that a kind of a kind of zigzag polarization chipless RFID label described in any one of claim 1-3 is constituted, its
It is characterised by, including reader, transmitting antenna, reception antenna and label, the transmitting antenna is mutually perpendicular to reception antenna, institute
State label to be made up of at least one zigzag polarization chipless RFID label.
5. system according to claim 4, it is characterised in that two or more zigzag polarization chipless RFID label
Laterally the different or longitudinal minor matters length of minor matters length is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877999.2U CN206115473U (en) | 2016-08-12 | 2016-08-12 | No chip RFID label of zigzag pole change and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877999.2U CN206115473U (en) | 2016-08-12 | 2016-08-12 | No chip RFID label of zigzag pole change and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206115473U true CN206115473U (en) | 2017-04-19 |
Family
ID=58512478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620877999.2U Expired - Fee Related CN206115473U (en) | 2016-08-12 | 2016-08-12 | No chip RFID label of zigzag pole change and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206115473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295775A (en) * | 2016-08-12 | 2017-01-04 | 华南理工大学 | A kind of zigzag polarization chipless RFID label and system |
-
2016
- 2016-08-12 CN CN201620877999.2U patent/CN206115473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295775A (en) * | 2016-08-12 | 2017-01-04 | 华南理工大学 | A kind of zigzag polarization chipless RFID label and system |
| CN106295775B (en) * | 2016-08-12 | 2023-07-18 | 华南理工大学 | Z-shaped polarization chipless RFID tag and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20190812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |