CN206225529U - A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring - Google Patents
A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring Download PDFInfo
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- CN206225529U CN206225529U CN201621187617.XU CN201621187617U CN206225529U CN 206225529 U CN206225529 U CN 206225529U CN 201621187617 U CN201621187617 U CN 201621187617U CN 206225529 U CN206225529 U CN 206225529U
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- polarization
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- flanked ring
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- rfid label
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Abstract
The utility model discloses a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring, for being encoded to article in Chip-free label system, including medium substrate, X polarization resonator and Y polarization resonators.X polarization resonators are 4 coaxial straight-flanked ring compositions.Y polarization resonators are that X polarization resonators are rotated by 90 ° gained clockwise.The X polarization resonators and Y polarization resonators are printed on medium substrate, and X polarization resonators and Y polarization resonators are distributed in same level in diagonal.RFID label antenna disclosed in the utility model is magnetic antenna, and the different medium substrate to adhering to is insensitive.RFID label antenna disclosed in the utility model is also dual polarized antenna simultaneously, and antenna can be repeated to coding in the range of similar frequency bands, increase the code capacity of antenna.
Description
Technical field
The utility model is related to Chip-free label field of antenna, and in particular to a kind of dual polarization based on coaxial straight-flanked ring
Chipless RFID label antenna.
Background technology
Working mechanism according to Chip-free label antenna is different with mode, and Chip-free label coded system can substantially be divided into
Based on time domain, the coding techniques of frequency domain and phase.Coding techniques based on time domain refers in time domain scale, by receiving not
The transmission signal at moment is encoded when co-extensive, due to signal as transmission attenuation constantly increases, so the bits of coded of time domain coding
Number is little；Phase coding technology refers to be encoded by determining the out of phase of transmission signal, the bits of coded based on this mode
Number is also restricted very much；Whether Spectrum Coding Technique refers to produce resonance to encode by a series of resonators in frequency domain.
Code capacity increases with increasing for resonator.But most of label antennas based on Frequency Domain Coding often need many volumes
Code will increase a resonator, therefore largely increase the size of antenna, be unfavorable for antenna miniaturization.
Chip-free label recognizes that the aspect such as tracking has low cost, can be read in article compared to traditional chip tag that has
The advantages of reading device is quickly recognized, therefore with the potential value being widely used.Coding techniques is in Chip-free label antenna
The coded system of application, by different Signal codings ' 0 ' or ' 1 ', different information being represented with different combinations, with
This information to record coding commodity.
Utility model content
The purpose of this utility model is to solve drawbacks described above of the prior art, there is provided one kind is based on coaxial straight-flanked ring
Dual polarization chipless RFID label antenna.
The purpose of this utility model can be reached by adopting the following technical scheme that：
A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring, in Chip-free label system to thing
Product are encoded, and the antenna includes：Medium substrate, X polarization resonators and Y polarization resonators, X polarization resonator and the institute
State Y polarization resonators to be printed on the same face of the medium substrate, the X polarization resonators and Y polarization resonators exist
It is distributed in diagonal in same level；
The X polarization resonators and Y polarization resonators are constituted by several coaxial rings, the X polarization resonator
Identical with Y polarization resonator structure shape, the X polarization resonators and Y polarization resonators differ 90 ° of anglecs of rotation.
Further, the X polarization resonators and Y polarization resonators are constituted by several coaxial straight-flanked rings.
Further, each two phase in several coaxial straight-flanked rings of the X polarization resonators and Y polarization resonators
Adjacent straight-flanked ring respectively links together both sides above and following both sides by upper and lower two shorting stubs, and upper shorting stub is respectively positioned on
The midpoint of the length of side, lower shorting stub is in a discrete distribution.
Further, the X polarization resonators and Y polarization resonators are made up of 4 coaxial straight-flanked rings, each rectangle
Ring width is 0.2mm, and the interval between each two straight-flanked ring is 0.2mm, and outermost straight-flanked ring length and width l and w are respectively
7.2mm、6.6mm。
Further, the length and width of the shorting stub are 0.2mm
Further, the lower shorting stub from inside to outside apart from the distance at length of side midpoint be respectively 0.5mm, 0.4mm,
0.3mm。
Further, the top left corner apex of the coaxial straight-flanked ring of outermost layer of the X polarization resonator and Y polarization resonance
The bottom right angular vertex of the coaxial straight-flanked ring of outermost layer of device on X, Y-direction reference axis apart from l1 and w1 be respectively 13.8mm and
15.4mm。
Further, the antenna be actuated to plane incidence wave excitation.
Further, the medium substrate material uses Teflon, and dielectric constant is 2.55, and loss angle tangent is
0.0014, thickness is 0.5mm.
Further, the X polarization resonator is responsible for X-direction resonance, and resonance is produced when incidence wave is X polarized waves.
Further, the Y polarization resonator is responsible for Y-direction resonance, and resonance is produced when incidence wave is Y polarized waves.
The utility model has the following advantages and effect relative to prior art：
(1) a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring disclosed in the utility model, uses
The rectangle ring structure of connection, enables each two ring to produce two resonance, increases the code capacity of antenna, and antenna is magnetic
, so that the different medium substrate of antenna pair adhesion is insensitive, antenna is placed on when on different articles, self performance base
Originally will not change.
(2) rectangle in a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring disclosed in the utility model
It is closely spaced between ring, so as to reduce the size of antenna.
(3) X poles in a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring disclosed in the utility model
Change resonator and Y polarizes resonator works in same section of frequency band, one section of frequency band is used to coding twice, code capacity is improved
One times.
Brief description of the drawings
Fig. 1 is a kind of knot of the dual polarization chipless RFID label antenna based on coaxial straight-flanked ring disclosed in the utility model
Composition；
Fig. 2 is the X polarization resonators in Fig. 1；
Fig. 3 is the Y polarization resonators in Fig. 1；
Fig. 4 is the basic structural unit of the X polarization resonators in Fig. 2；
Fig. 5 is a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring disclosed in the utility model
RCS curve maps.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Embodiment
Present embodiment discloses a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring, for wirelessly penetrating
Chip-free label antenna in frequency identifying system, including medium substrate, X polarization resonators and Y polarization resonators.The X polarization is humorous
Shake device and Y polarization resonator be printed on the medium substrate the same face.
The X polarization resonator is by 4 coaxial rectangular loops into the adjacent straight-flanked ring of each two is by upper and lower two shorting stubs
Both sides above and following both sides are linked together respectively.The length and width of shorting stub are 0.2mm.
The Y polarization resonators are rotated in a clockwise direction 90 degree of gained by X polarization resonators.
The medium substrate material uses Teflon (Teflon, tm), and dielectric constant is 2.55, and loss angle tangent is
0.0014, thickness is 0.5mm.
In 10.5 GHzs, compared with MHz frequency, resonance line length reduces utility model works frequency, and antenna size reduces,
The coupling increase of each two adjacent rectangle interannular.
As shown in figure 1, in the present embodiment, X polarization resonators are in diagonal point in same level with Y polarization resonators
Cloth.The top left corner apex of the X polarization coaxial straight-flanked rings of resonator outermost layer and the coaxial straight-flanked ring of outermost layer of Y polarization resonators
Bottom right angular vertex on X, Y-direction reference axis apart from l1 and w1 be respectively 13.8mm and 15.4mm.
The length and width l and w of X polarization resonator outermost layer ring are respectively 7.2mm, 6.6mm in Fig. 2.The width of straight-flanked ring is
0.2mm.Interval per two neighboring rectangle interannular is 0.2mm.L represents rectangle ring length, i.e. 7.2mm, and W represents rectangle ring width
Degree, i.e. 6.6mm；Q represents ring width, i.e. 0.2mm；G represents the gap width between straight-flanked ring, i.e. 0.2mm.
Dual polarization chipless RFID label antenna simulation result such as Fig. 5 based on coaxial straight-flanked ring that dimensions indicated above makes
It is shown.Under the excitation of plane incidence wave, the RCS curve maps of antenna and coding ' 011+Y -011 011 011 ' of X -011 011,
Comply fully with, it was demonstrated that it is completely applicable that the utility model is used for encoding and result is accurate.
The utility model connects each two adjacent rectangle ring with shorting stub, makes straight-flanked ring number n and the resonance that can be produced
Point number m meets formula：M=2 (n-1), so as to the code capacity of antenna is greatly improved, while the shorting stub of connection changes
Become the current direction of straight-flanked ring, made each resonator electric current in an annular spread for wavelength, antenna is become magnetic antenna,
So as to have the characteristic insensitive to the different medium substrate of adhesion.
The utility model uses X, and the dual polarization structure of Y polarization enables the antenna to be repeated profit in identical band limits
With code capacity is doubled.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by above-mentioned
The limitation 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 (10)
1. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring, in Chip-free label system to article
Encoded, it is characterised in that
The antenna includes：Medium substrate, X polarization resonators and Y polarization resonators, the X polarization resonators and Y polarization
Resonator is printed on the same face of the medium substrate, and the X polarization resonators and the Y polarize resonator in same level
It is distributed in diagonal on face；
The X polarization resonators and Y polarization resonators are constituted by several coaxial rings, X polarization resonator and the institute
State Y polarization resonator structure shape identical, the X polarization resonators and Y polarization resonators differ 90 ° of anglecs of rotation.
2. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 1, its feature
It is,
The X polarization resonators and Y polarization resonators are constituted by several coaxial straight-flanked rings.
3. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 2, its feature
It is,
The adjacent straight-flanked ring of each two is equal in several coaxial straight-flanked rings of the X polarization resonators and Y polarization resonators
Both sides above and following both sides are linked together respectively by upper and lower two shorting stubs, upper shorting stub is respectively positioned on the midpoint of the length of side,
Lower shorting stub is in a discrete distribution.
4. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 3, its feature
It is,
The X polarization resonators and Y polarization resonators are constituted by 4 coaxial straight-flanked rings, and each rectangle ring width is
0.2mm, the interval between each two straight-flanked ring is 0.2mm, outermost straight-flanked ring length and width l and w be respectively 7.2mm,
6.6mm。
5. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 3, its feature
It is,
The length and width of the shorting stub are 0.2mm.
6. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 4, its feature
It is,
The lower shorting stub is from inside to outside respectively 0.5mm, 0.4mm, 0.3mm apart from the distance at length of side midpoint.
7. a kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring according to claim 2, its feature
It is,
The top left corner apex of the outermost layer straight-flanked ring of the X polarization resonator and the outermost layer straight-flanked ring of Y polarization resonators
Bottom right angular vertex be respectively 13.8mm and 15.4mm apart from l 1 and w1 on X, Y-direction reference axis.
8. according to a kind of any described dual polarization chipless RFID label antenna based on coaxial straight-flanked ring of claim 1 to 6,
Characterized in that,
The antenna be actuated to plane incidence wave excitation.
9. according to a kind of any described dual polarization chipless RFID label antenna based on coaxial straight-flanked ring of claim 1 to 6,
Characterized in that,
The medium substrate material uses Teflon, and dielectric constant is 2.55, and loss angle tangent is 0.0014, and thickness is 0.5mm.
10. according to a kind of any described dual polarization chipless RFID label based on coaxial straight-flanked ring day of claim 1 to 6
Line, it is characterised in that
The X polarization resonator is used for X-direction resonance, and resonance is produced when incidence wave is X polarized waves；
The Y polarization resonator is used for Y-direction resonance, and resonance is produced when incidence wave is Y polarized waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187617.XU CN206225529U (en) | 2016-11-04 | 2016-11-04 | A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187617.XU CN206225529U (en) | 2016-11-04 | 2016-11-04 | A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring |
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| CN206225529U true CN206225529U (en) | 2017-06-06 |
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| CN201621187617.XU Expired - Fee Related CN206225529U (en) | 2016-11-04 | 2016-11-04 | A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486739A (en) * | 2016-11-04 | 2017-03-08 | 华南理工大学 | A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring |
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2016
- 2016-11-04 CN CN201621187617.XU patent/CN206225529U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486739A (en) * | 2016-11-04 | 2017-03-08 | 华南理工大学 | A kind of dual polarization chipless RFID label antenna based on coaxial straight-flanked ring |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20191104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |