CN207852909U - A kind of RFID tag and radio-frequency recognition system - Google Patents
A kind of RFID tag and radio-frequency recognition system Download PDFInfo
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- CN207852909U CN207852909U CN201721096487.3U CN201721096487U CN207852909U CN 207852909 U CN207852909 U CN 207852909U CN 201721096487 U CN201721096487 U CN 201721096487U CN 207852909 U CN207852909 U CN 207852909U
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- label
- main radiator
- antenna
- uhf
- rfid tag
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Abstract
The utility model discloses a kind of RFID tag and radio-frequency recognition system, RFID tag includes matrix, label antenna and label chip, label antenna has a center line, label antenna includes HF, UHF antenna, HF antennas include that HF aerial coils and HF antennas are passed a bridge, and UHF antenna includes main radiator and feeder line；Feeder line is connect with label chip, is not directly connected to main radiator；HF aerial coils are passed a bridge by HF antennas and are connect with the label chip at distributing point.Radio-frequency recognition system includes multiple above-mentioned RFID tags.The utility model can be operated in HF and uhf band, Antenna Design flexibility is good, the conjugate impedance match flexibility ratio of antenna impedance and label chip impedance is big, it is easily achieved between UHF label chips and UHF antenna and good conjugate impedance match may be implemented, and it is easy to adjust the resonant frequency point of HF antennas and HF label chips, it can carry out meeting application across frequency, have a wide range of application, is at low cost.
Description
Technical field
The utility model is related to a kind of RFID tag and radio-frequency recognition systems, belong to technical field of RFID.
Background technology
Currently, radio frequency identification（Radio Frequency Identification, RFID）Technology has been widely used
In fields such as such as sale of goods, transport, production, waste management, postal tracking, aviation luggage management, vehicle toll management.And
RFID system includes normally multiple RFID tags, at least one RFID readings with label antenna communicated with the RFID tag
Take device and the computing device for controlling the RFID reader.
In an rfid tag, radio wave signal caused by electromagnetic field is to be transmitted to label via its RFID label antenna
Chip, also, the current signal of label chip is transmitted in space by RFID label antenna.RFID tag presses frequency range
Four frequency bands mainly are divided into, but each band RFID label overwhelming majority is one-segment application, low frequency, high frequency, superelevation
Frequently, the RFID tag of microwave is each incompatible.In practical applications, a kind of frequency range one opens label.HF labels use near field due to it
Coil coupling technique provides higher security level and the information storage space of bigger；And UHF labels possess preferably read-write away from
From and speed.However, needing while using HF and UHF labels in certain application scenarios, while using two independent HF and UHF
Label, not only formality is cumbersome, and cost is very high.If HF and UHF can be combined, it is integrated into inside a label
It goes, application cost can be substantially reduced, improve efficiency.
HF labels carry out information exchange using magnetic coupling with RFID reader, and antenna substrate and surface metal are to its shadow
Sound is smaller；And UHF carries out information exchange using the form of electromagnetic transmission with RFID reader, antenna substrate and surface metal are tight
Ghost image rings gain and the level of impedance match of UHF antenna, and then influences the reading/writing distance and performance of UHF labels.Therefore, such as
Fruit HF antennas are integrated in UHF antenna on same matrix, and HF antennas can generate great electromagnetic coupling to UHF antenna, and the two is not
It is easily integrated.
In view of this, it is necessary to propose a kind of two-band RFID tag.
Invention content
In view of the above-mentioned problems of the prior art, the utility model a kind of RFID tag is provided, it can be achieved that HF and
Uhf band RFID tag is integrated, reduces the cost of RFID tag.
To achieve the goals above, a kind of RFID antenna that the utility model uses, including matrix and set
The label antenna and label chip being placed on matrix, label antenna have a center line, and the label chip includes HF label cores
Piece and UHF label chips, HF label chips are in same distributing point with UHF label chips；HF label chips and UHF label chips
Distributing point be located at it is on the center line and symmetrical about center line；The label antenna include HF antennas and be located at HF antennas
The UHF antenna in outside, HF antennas include that HF aerial coils and HF antennas are passed a bridge, and UHF antenna includes symmetrical about centerline axis
The strip main radiator of bending and about the symmetrical feeder line of centerline axis；The feeder line be located at main radiator and label chip it
Between, feeder line is connect with label chip, is not directly connected to main radiator, passes through the side of inductive coupling between main radiator and feeder line
Formula constitutes UHF antenna；HF aerial coils are passed a bridge by HF antennas and are connect with the label chip at distributing point.
Preferably, the main radiator is in two continuous spills, and the feeder line is strip rectangle；Main radiator and feeder line
Positioned at the side of HF aerial coil longer sides.
Preferably, the main radiator is inverted U shape, and the feeder line is strip rectangle, and main radiator and feeder line are located at HF days
The side of line coil longer sides, and form encirclement shape.
Preferably, the width range of the HF aerial coils is phase in 0.2mm to 2.5mm and/or HF aerial coils
The distance between adjacent two turn coils ranging from 0.2mm to 2mm；And/or the length range of HF aerial coil outer coils is
The width range of 30mm to 80mm and/or HF aerial coil outer coils is 15mm to 50mm.
Preferably, the numbers range of the main radiator bending is 1 to 10 time.
Preferably, the angular range of the main radiator bending is 0 ゜ to 90 ゜.
Preferably, the width of the feeder line and/or length range are 0.5mm to 15mm.
Preferably, the distance between the feeder line and main radiator ranging from 0.5mm to 15mm.
Preferably, the width range of the main radiator is 0.2mm to 15mm, the length range of main radiator be 10mm extremely
100mm；The distance between the main radiator and HF aerial coils ranging from 0.5mm to 20mm.
A kind of radio-frequency recognition system, including the RFID tag described in any one multiple above-mentioned embodiment.
Compared with prior art, the utility model is by integrated UHF label antennas and HF label antennas, to make it that can answer
For uhf band and HF frequency ranges, the cost that UHF and HF labels are applied simultaneously is reduced, application efficiency is improved.Also, the RFID
Label has a wide range of application by the agile kernel model of the shape of label antenna to keep its adjustable setting property strong.The RFID is marked
Label Antenna Construction Design is compact, area is small.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is another structural schematic diagram of the utility model.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As depicted in figs. 1 and 2, a kind of RFID tag, including matrix 20 and the label day that is set on matrix 20
Line and label chip, it includes HF label chips and UHF label chips that label antenna, which has a center line 28, the label chip,
HF label chips are in same distributing point with UHF label chips；The distributing point 10 of HF label chips and UHF label chips is located at institute
It states on center line and symmetrical about center line；The label antenna includes HF antennas and the UHF antenna on the outside of HF antennas,
HF antennas include HF aerial coils 26 and HF antennas gap bridge 25, and UHF antenna includes the strip about centerline axis symmetric bending
Main radiator 22 and about the symmetrical feeder line of centerline axis 21；The feeder line 21 between main radiator 22 and label chip,
Feeder line 21 is connect with label chip, is not directly connected to main radiator 22, passes through inductance coupling between main radiator 22 and feeder line 21
The mode of conjunction constitutes UHF antenna；HF aerial coils 26 are connect by HF antennas gap bridge 25 with the label chip at distributing point 10.
Wherein, label antenna is formed by metal（Black portions pattern in such as figure）.Label antenna can be by printing, etching
In the formation of method composition and matrix 20（Shape as shown in the figure）, to form flat plane antenna.Label antenna has center line 28,
It is the directions y by the direction where center line 28, perpendicular to center line 28 as shown in Figure 1 or 2 for clearer description
Direction is defined as the directions x.
As shown in Figure 1, the main radiator 22 is in two continuous spills, the feeder line 21 is strip rectangle；Primary radiation
Body 22 and feeder line 21 are located at the side of 26 longer sides of HF aerial coils.
As shown in Fig. 2, the main radiator 22 is inverted U shape, the feeder line 21 is strip rectangle, main radiator 22 and feeder line
21 are located at the side of 26 longer sides of HF aerial coils, and form encirclement shape.Compared to the label antenna of embodiment illustrated in fig. 1,
Difference essentially consists in the difference of main radiator.
In practical application, in order to realize the ceiling capacity transmission of UHF label antennas and UHF label chips, it is necessary to reality of coming in
The conjugate impedance match of both existing impedance.Therefore, it is necessary to realize that capacitive matches between the label antenna and the label chip, it is also necessary to real
Existing perception between label antenna and UHF label chips matches.
And the impedance magnitude of UHF label antennas can by adjusting be arranged main radiator 22 length and/or width and/or
The distance between shape, 21 length of feeder line and/or width, feeder line 21 and main radiator, main radiator 22 at a distance from HF coils
Area and/or shape adjust.The resonant frequency of HF antennas and HF label chips can be by adjusting the width of HF aerial coils 2
Degree and length, the adjusting the distance between per turn coil.
Therefore, can by adjusting be arranged main radiator 22 length and/or width come realize UHF label antennas part with
Impedance between UHF label chips matches substantially, for example, adjusting the length of setting main radiator 22 within the scope of 10mm to 100mm
It spends to realize, also further for example, adjusting the width of setting main radiator 22 within the scope of 0.2mm to 15mm to realize basic capacitive
Match；It is realized by adjusting the shape feature size of feeder line 21 substantially perceptual between UHF label antennas and the UHF label chips
Matching, for example, length and/or width by adjusting setting feeder line 21 within the scope of 0.5mm to 15mm（Such as it is set as
10mm）, to which the spacing between main radiator 22 and distributing point be arranged, or set by being adjusted within the scope of 0.5mm to 20mm
It sets at a distance from main radiator 22 and HF aerial coils（Such as it is set as 6mm or 8mm）, appointing also or by the above several ways
Meaning combination matches come the basic perception realized jointly between label antenna and the label chip.
In this embodiment, HF antennas and HF label cores can be realized by adjusting length or/and the width of aerial coil
Piece resonance at 13.56MHz, for example, the width of the HF aerial coils is arranged within the scope of 0.2mm to 2.5mm to realize；
Further for example, the HF antennas are arranged within the scope of 0.2mm to 2mm the distance between per turn coil to realize；By adjusting HF antennas
The number of turns of coil realizes HF antennas and HF label chip resonance in 13.56MHz, for example, in 4 to 15 circles（Such as it is set as 10
Circle）To realize.The length of 26 outer coil of HF aerial coils can be also set within the scope of 30mm to 80mm, and/or
The width of the HF antennas outer coil is set within the scope of 15mm to 50mm, to realize HF label antennas and the HF labels core
Piece resonance at 13.56MHz.
It should be noted that when adjusting the length of setting main radiator 21 and feeder line 22, main radiator 21 and feeder line 22
The number of bending can be arranged between 0 to 5 respectively.
In addition, in the case of strong by the tag antenna design flexibility of the utility model, pair of RFID tag
Band characteristic is not rely on matrix 20, for example, matrix 20 no longer needs to select RF4 materials, the thickness of matrix 20 is not yet
It needs to be set as 0.25, therefore, the cost of RFID tag 10 can substantially reduce, and thickness can also reduce.In this embodiment,
Matrix 20 can be with alternative costs are relatively high but radioresistance characteristic is good FR4（Epoxy glass fabric）, polyethylene（polyethene）Or
Polyester（polyester）Equal materials, can also the materials such as the low foam of alternative costs.The integral thickness of RFID antenna
It can also be arranged within the scope of 0.01mm to 60mm（Such as 0.8mm）.
Certainly, the numbers range that the main radiator 22 is bent is 1 to 10 time.Preferably, the main radiator 22 is bent
Angular range be 0 ゜ to 90 ゜, to realize UHF label antennas and the UHF label chips impedance matching.
Preferably, the distance between the feeder line 21 and main radiator 22 ranging from 0.5mm to 15mm, to realize that UHF is marked
Sign antenna and the UHF label chips impedance matching.
A kind of radio-frequency recognition system, including the RFID tag described in any one multiple above-mentioned embodiment.This is penetrated
Frequency identifying system further includes that there is the RFID reader of antenna and the calculating for controlling the RFID reader to fill
It sets.RFID reader and computing device are that those skilled in the art are fully able to the component realized, are no longer retouched one by one herein
It states
Example above primarily illustrates the RFID tag and its radio-frequency recognition system of the utility model.Although only to it
In the embodiment of some the utility model be described, but those of ordinary skill in the art are it is to be appreciated that this practicality is new
Type can without departing from its spirit with range in the form of many other implement.Therefore, the example and embodiment shown
It is considered as illustrative and not restrictive, is not departing from the spirit of the present invention and model as defined in appended claims
In the case of enclosing, the utility model may cover various modification and replacement.
Claims (10)
1. a kind of RFID tag, including matrix (20) and the label antenna and label chip that are set on matrix (20),
Label antenna has a center line (28), which is characterized in that and the label chip includes HF label chips and UHF label chips,
HF label chips are in same distributing point with UHF label chips；The distributing point (10) of HF label chips and UHF label chips is located at
It is on the center line and symmetrical about center line；
The label antenna includes HF antennas and the UHF antenna on the outside of HF antennas, and HF antennas include HF aerial coils
(26) it passes a bridge (25) with HF antennas, UHF antenna includes the strip main radiator (22) about centerline axis symmetric bending and closes
In the symmetrical feeder line of centerline axis (21)；
The feeder line (21) is located at main radiator (22) between label chip, and feeder line (21) is connect with label chip, not with master
Radiator (22) is directly connected to, and UHF antenna is constituted by way of inductive coupling between main radiator (22) and feeder line (21)；
HF aerial coils (26) are connect by HF antennas gap bridge (25) with the label chip at distributing point (10).
2. a kind of RFID tag according to claim 1, which is characterized in that the main radiator (22) is in two companies
Continuous spill, the feeder line (21) are strip rectangle；It is longer that main radiator (22) and feeder line (21) are located at HF aerial coils (26)
The side on side.
3. a kind of RFID tag according to claim 1, which is characterized in that the main radiator (22) is inverted U shape,
The feeder line (21) is strip rectangle, and main radiator (22) and feeder line (21) are located at the side of HF aerial coils (26) longer sides,
And form encirclement shape.
4. a kind of RFID tag according to claim 1,2 or 3, which is characterized in that the HF aerial coils (26)
Width range be the distance between two adjacent rings coil range in 0.2mm to 2.5mm and/or HF aerial coils (26)
For 0.2mm to 2mm；And/or the length range of HF aerial coils (26) outer coil be 30mm to 80mm, and/or
The width range of HF aerial coils (26) outer coil is 15mm to 50mm.
5. a kind of RFID tag according to claim 1, which is characterized in that time of main radiator (22) bending
Number ranging from 1 to 10 time.
6. a kind of RFID tag according to claim 1, which is characterized in that the angle of main radiator (22) bending
Spend ranging from 0 ゜ to 90 ゜.
7. a kind of RFID tag according to claim 1, which is characterized in that the width of the feeder line (21) and/or
Length range is 0.5mm to 15mm.
8. a kind of RFID tag according to claim 7, which is characterized in that the feeder line (21) and main radiator
The distance between (22) ranging from 0.5mm to 15mm.
9. a kind of RFID tag according to claim 1, which is characterized in that the width model of the main radiator (22)
It encloses for 0.2mm to 15mm, the length range of main radiator (22) is 10mm to 100mm；The main radiator (22) and HF antennas
The distance between coil ranging from 0.5mm to 20mm.
10. a kind of radio-frequency recognition system, which is characterized in that including radio frequency identification marking as claimed in any one of claims 1-9 wherein
Label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721096487.3U CN207852909U (en) | 2017-08-30 | 2017-08-30 | A kind of RFID tag and radio-frequency recognition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721096487.3U CN207852909U (en) | 2017-08-30 | 2017-08-30 | A kind of RFID tag and radio-frequency recognition system |
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| Publication Number | Publication Date |
|---|---|
| CN207852909U true CN207852909U (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721096487.3U Active CN207852909U (en) | 2017-08-30 | 2017-08-30 | A kind of RFID tag and radio-frequency recognition system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909538A (en) * | 2021-01-13 | 2021-06-04 | 宁波大学 | High-frequency RFID reader-writer antenna |
| CN113869479A (en) * | 2021-09-28 | 2021-12-31 | 上扬无线射频科技扬州有限公司 | Multi-purpose wireless RFID (radio frequency identification) tag suitable for different frequency bands |
-
2017
- 2017-08-30 CN CN201721096487.3U patent/CN207852909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909538A (en) * | 2021-01-13 | 2021-06-04 | 宁波大学 | High-frequency RFID reader-writer antenna |
| CN113869479A (en) * | 2021-09-28 | 2021-12-31 | 上扬无线射频科技扬州有限公司 | Multi-purpose wireless RFID (radio frequency identification) tag suitable for different frequency bands |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No. 88, Wenchang East Road, Yangzhou City, 211400 Jiangsu Province Patentee after: Jiangsu Daoyuan Technology Group Co.,Ltd. Address before: 211400 4, A1 block 9, min Tai Road, Yizheng Economic Development Zone, Yangzhou, Jiangsu. Patentee before: JIANGSU DAOYUAN MICROELECTRONICS Co.,Ltd. |