CN207799725U - A kind of miniaturization double resonance anti-metal RFID tag - Google Patents
A kind of miniaturization double resonance anti-metal RFID tag Download PDFInfo
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- CN207799725U CN207799725U CN201721833897.1U CN201721833897U CN207799725U CN 207799725 U CN207799725 U CN 207799725U CN 201721833897 U CN201721833897 U CN 201721833897U CN 207799725 U CN207799725 U CN 207799725U
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- electrode
- rfid tag
- medium substrate
- double resonance
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Abstract
The utility model provides a kind of miniaturization double resonance anti-metal RFID tag, including medium substrate with the microstrip antenna on the medium substrate surface is set；The microstrip antenna includes：It is arranged in the positive first electrode of the medium substrate and second electrode, the first slit is provided between the first electrode and second electrode；Grounding electrode at the medium substrate back side is set；Feeding electrode in the medium substrate first side is set, the feeding electrode is divided into the first feeding electrode and the second feeding electrode, it is provided with the second slit between the two, it is provided with driving chip at second slit, the driving chip and first feeding electrode and the second feeding electrode are separately connected, and first feeding electrode is connected with second electrode, and second feeding electrode is connected with grounding electrode；Further include third electrode, the third electrode is electrically connected with the first electrode, second electrode, grounding electrode.
Description
Technical field
The utility model is related to RFID tag field more particularly to a kind of RFID marks of miniaturization double resonance anti-metal
Label.
Background technology
RFID (Radio Frequency Identification) label, also known as electronic tag, radio frequency identification skill
Art is a kind of communication technology, can identify specific objective by radio signals and read and write related data, without identifying system and spy
Mechanical or optical contact is established between setting the goal, you can carry out quick, batch identification, can use in moneys such as IT, medical treatment, tools
Produce the occasion of management.RF ID systems generally comprise electronic tag, reader two parts.Electronic tag is installed in identified object
On, for storing the identity information of identified object.Reader is carried out wireless communication with electronic tag, may be implemented in label
The write-in and reading of data information.Antenna in electronic tag is the critical component in whole system, and design and performance is horizontal
It is largely fixed the performance of label, including operating distance, consistency etc..
As the development of global RFID tag technology reaches its maturity, people efficiently manage experiencing RFID tag and bring people
While with facility, the requirement to label steps up：Label volume wants small, but also wants to work under metal environment.It is situated between
In such case, based on PIFA antennas (Planar Inverted-F Antenna, i.e. planar inverted-F antenna) principle etc., use is low
Loss, high-k, zonal ceramic label antenna come into being, however zonal ceramic label antenna can not
Global demand is fully met, is primarily due to the ceramic antenna of miniaturization, bandwidth is narrow, can only meet European band
Some frequency range in (866-868MHz) or US bands (902-928MHz)；Or two frequency ranges can be covered, but label
BodyProduct is excessive, is unsatisfactory for the requirement of label antenna concealment；Or meet simultaneously small, and it is resistant to metal environment,But it can only cover
One frequency range of lid.Global economic integration, more and more industries need the RFID label antenna to globalize, manage globalization
Article assets, it is not only small but also two frequency ranges can be covered, but also the label antenna of various metals and nonmetallic environment is adapted to, it is wide
Big RFID application industries are expected.
Utility model content
The utility model provides a kind of miniaturization double resonance anti-metal RFID tag, and the RFID tag includes medium substrate
With the microstrip antenna on the medium substrate surface is set；The microstrip antenna includes：
It is arranged in the positive first electrode of the medium substrate and second electrode, between the first electrode and second electrode
It is provided with the first slit；
Grounding electrode at the medium substrate back side is set；
Feeding electrode in the medium substrate first side is set, and the feeding electrode is divided into the first feeding electrode and
Two feeding electrodes are provided with the second slit between the two, and driving chip, the driving chip are provided at second slit
It is separately connected with first feeding electrode and the second feeding electrode, and first feeding electrode is connected with second electrode,
Second feeding electrode is connected with grounding electrode；
Further include third electrode, the third electrode electrically connects respectively with the first electrode, second electrode, grounding electrode
It connects.
Optionally, the RFID tag has the first working frequency range and the second working frequency range.
Optionally, first working frequency range be 866Hz~868MHz, second working frequency range be 902MHz~
928MHz；Alternatively, first working frequency range is 902MHz~928MHz, second working frequency range is 866Hz~868MHz.
Optionally, the third electrode is arranged in the second side at the medium substrate back side, the second side and
The first side is two opposite sides.
Optionally, the shape of the third electrode is the mirror image of Y-shaped, " fourth " shape, " F " shape, the mirror image shape of " fourth " or " F "
Shape.
Optionally, the third electrode includes first part and second part, and the first part is separately connected the first electricity
Pole and grounding electrode, the second part are separately connected second electrode and grounding electrode, the first part and second part phase
It connects or is not connected with each other.
Optionally, the first part of the third electrode and second part are located at the same side of the medium substrate；Or
Person, the first part of the third electrode and second part are located at the not ipsilateral of the medium substrate.
Optionally, the medium substrate is ceramic block or high frequency plate.
Optionally, the shape of the first electrode and the second electrode is that may respectively be rectangle, circle, ellipse, three
Angular, polyline shaped, curve-like.
RFID tag provided by the utility model can have double resonance in two band operations.In addition, this practicality is new
The miniaturization double resonance RFID tag that type embodiment provides, when needs attach on metal objects in use, by the back side and the gold
Belong to isoelectric membrane, that is, grounding electrode side and metal objects contact, and radiating surface is i.e. other than face where grounding electrode
Face do not contacted with metal objects, therefore be also equipped with good readwrite performance, that is, good anti-metal, can be in metal
It is used in environment or nonmetallic environment, adaptability is good.Furthermore using the medium substrate with low-loss and high-k,
Such as ceramic block or high frequency plate, the size of label can be reduced.
Description of the drawings
Fig. 1 is the stereochemical structure signal for the miniaturization double resonance anti-metal RFID tag that one embodiment of the utility model provides
Figure；
Fig. 2 is the structural schematic diagram in each face of miniaturization double resonance anti-metal RFID tag shown in FIG. 1；
Fig. 3 is the structural schematic diagram of first electrode；
Fig. 4 is a kind of structural schematic diagram of third electrode in embodiment；
Fig. 5 is the structural schematic diagram of third electrode in another embodiment；
Fig. 6 is the structural schematic diagram of third electrode in another embodiment.
Specific implementation mode
Be described below be the utility model multiple possible embodiments in some, it is desirable to provide to the utility model
Basic understanding, it is no intended to confirm the crucial or conclusive element of the utility model or limit scope of the claimed.According to
The technical solution of the utility model, under the connotation for not changing the utility model, those of ordinary skill in the art can be with
It is proposed the other realization methods that can be replaced mutually.Therefore, detailed description below and attached drawing are only to the utility model
The exemplary illustration of technical solution, and be not to be construed as the whole of the utility model or be considered as to technical solutions of the utility model
Define or limit.
It please refers to Fig.1 and Fig. 2, Fig. 1 is that the miniaturization double resonance anti-metal RFID that one embodiment of the utility model provides is marked
The dimensional structure diagram of label, Fig. 2 are the structural schematic diagram in each face of miniaturization double resonance anti-metal RFID tag shown in FIG. 1.
Miniaturization double resonance anti-metal RFID tag provided by the utility model includes medium substrate 10 and is arranged in 10 table of medium substrate
The microstrip antenna in face, the microstrip antenna include：It is arranged in the positive first electrode 11 of medium substrate and second electrode 12, and the
The first slit 13, first electrode 11 and second electrode 12 are provided between one electrode 11 and second electrode 12 at the first slit 13
It is connectionless；It further include the grounding electrode 14 being arranged at the back side of medium substrate 10；Feed in medium substrate first side is set
Electrode, the feeding electrode are divided into the first feeding electrode 151 and the second feeding electrode 152, are provided with the second slit 16 between the two,
First feeding electrode 151 and the second feeding electrode 152, without interconnection, are set both at the second slit 16 at the second slit 16
It is equipped with driving chip 17, driving chip 17 and the first feeding electrode 151, the second feeding electrode 152 are separately connected；And the first feedback
Electrode 151 and second electrode 12 connect, and the second feeding electrode 152 and grounding electrode 14 connect；Further include third electrode 18, the
Three electrodes 18 are electrically connected with first electrode 11, second electrode 12, grounding electrode 14.Optionally, Jie in embodiment one
Matter substrate 10 is ceramic block or high frequency plate, with low-loss and high-k.
Radiation mechanism based on microstrip antenna can make RFID tag have two in structure provided by the utility model
A working frequency range.First working frequency range is provided by first electrode 11, and third electrode 18 is by first electrode 11, grounding electrode 14,
Two electrodes 12 are electrically connected with each other, and first electrode 11 can be regarded as to the coupling parasitic element being connected to ground, and first
Electrode 11 obtains coupling excitation by way of electromagnetic coupling from second electrode 12, to realize that opening for the first working frequency range is shaken,
The practical track lengths that first electrode 11 is arranged are the quarter-wave current length of the first working frequency range, it may be implemented
It works in the first working frequency range.Second working frequency range is provided by second electrode 12, is radiated based on a quarter microstrip antenna
The practical track lengths of mechanism, setting second electrode 12 are the quarter-wave current length of the second working frequency range, i.e., logical
Crossing the practical track lengths of adjustment second electrode 12 makes it be operated in corresponding second frequency range.
First working frequency range can be European band (866Hz~868MHz), can also be US bands (902MHz~
928MHz) or other working frequency range, as long as the practical track lengths of setting first electrode 11 are four points of the first working frequency range
One of wavelength current length.In Fig. 1 and structure shown in Fig. 2, first electrode is rectangle, can be by the way that first electrode is arranged
Shape adjust the physical length of first electrode, as shown in figure 3, first electrode 11 is polyline shaped, the reality of first electrode 11
Length is the summation of each segment length of polyline shaped, and first electrode 11 can also be that circle, ellipse, triangle, curve-like etc. are various
Shape, the physical length for adjusting first electrode 11.Similarly, the second working frequency range can be European band (866Hz~
868MHz), it can also be US bands (902MHz~928MHz) or other working frequency range, as long as setting second electrode 12
Practical track lengths be the second working frequency range quarter-wave current length, second electrode 12 can be rectangle, circle
Shape, ellipse, triangle, polyline shaped, curve-like etc. are variously-shaped, the physical length for adjusting second electrode 12.
In addition, the RFID tag for the miniaturization double resonance that the utility model embodiment provides, when needs are attached in metal object
In use, the back side and the metal objects are contacted on part, that is, 14 side of grounding electrode and metal objects contact, and radiating surface
Face i.e. other than 14 place face of grounding electrode is not contacted with metal objects, therefore still has good readwrite performance,
It is exactly good anti-metal, can be used in metal environment or nonmetallic environment, adaptability is good.Furthermore using with
The medium substrate of low-loss and high-k can reduce the size of label, the utility model such as ceramic block or high frequency plate
The label volume that embodiment provides can be reduced to 12*7*3mm or so.
In Fig. 1 and embodiment shown in Fig. 2, third electrode 18 is arranged in the second side of medium substrate 10, this second
Side and first side are two opposite sides, and the shape of third electrode 18 is the mirror image shape of " fourth ", in other embodiment
In, third electrode 18 can also be other shapes, such as Y-shaped shown in Fig. 4, " fourth " shape, " F " shape, the mirror image shape of " F " etc..
Referring to FIG. 5, in another embodiment, third electrode includes first part 281 and second part 282, and first part 281 divides
Not Lian Jie first electrode 11 and grounding electrode 14, second part 282 is separately connected second electrode 12 and grounding electrode 14, first
Points 281 and second part 282 be mutually not connected to.Grounding electrode 14 is not shown in the back side of medium substrate, Fig. 5, can refer to Fig. 1
With Fig. 2 structures, those skilled in the art are appreciated that.In Figure 5, first part 281 and second part 282 are mutually not connected to；Such as
Shown in Fig. 6, in other embodiments, first part 281 and second part 282 may be arranged as the shape being connected with each other.
In the structure of Fig. 5 and Fig. 6, first part 281 and second part 282 are located at same side, in other embodiments, third
The first part of electrode and second part may be located on the not ipsilateral of medium substrate.Third shown in the utility model attached drawing
The shape of electrode is not exclusive list, is not limited its scope yet, if third electrode play by first electrode, second electrode,
The effect that grounding electrode is electrically connected, all range without departing from the utility model protection.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belong to right and want
Seek the protection domain of book.
Claims (9)
1. a kind of miniaturization double resonance anti-metal RFID tag, which is characterized in that the RFID tag includes medium substrate and sets
Set the microstrip antenna on the medium substrate surface；The microstrip antenna includes：
It is arranged in the positive first electrode of the medium substrate and second electrode, is arranged between the first electrode and second electrode
There is the first slit；
Grounding electrode at the medium substrate back side is set；
Feeding electrode in the medium substrate first side is set, and the feeding electrode is divided into the first feeding electrode and the second feedback
Electrode is provided with the second slit between the two, and driving chip, the driving chip and institute are provided at second slit
It states the first feeding electrode and the second feeding electrode is separately connected, and first feeding electrode is connected with second electrode, it is described
Second feeding electrode is connected with grounding electrode；
Further include third electrode, the third electrode is electrically connected with the first electrode, second electrode, grounding electrode.
2. miniaturization double resonance anti-metal RFID tag as described in claim 1, which is characterized in that the RFID tag has
First working frequency range and the second working frequency range.
3. miniaturization double resonance anti-metal RFID tag as claimed in claim 2, which is characterized in that first working frequency range
For 866Hz~868MHz, second working frequency range is 902MHz~928MHz；Alternatively, first working frequency range is
902MHz~928MHz, second working frequency range are 866Hz~868MHz.
4. miniaturization double resonance anti-metal RFID tag as described in claim 1, which is characterized in that the third electrode setting
In the second side at the medium substrate back side, the second side and the first side are two opposite sides.
5. miniaturization double resonance anti-metal RFID tag as claimed in claim 4, which is characterized in that the shape of the third electrode
Shape is Y-shaped, the mirror image shape of " fourth " shape, " F " shape, the mirror image shape of " fourth " or " F ".
6. miniaturization double resonance anti-metal RFID tag as described in claim 1, which is characterized in that the third electrode includes
First part and second part, the first part are separately connected first electrode and grounding electrode, and the second part connects respectively
Second electrode and grounding electrode are connect, the first part and second part are connected with each other or are not connected with each other.
7. miniaturization double resonance anti-metal RFID tag as claimed in claim 6, which is characterized in that the of the third electrode
A part and second part are located at the same side of the medium substrate；Alternatively, the first part and second of the third electrode
Part is located at the not ipsilateral of the medium substrate.
8. miniaturization double resonance anti-metal RFID tag as described in claim 1, which is characterized in that the medium substrate is pottery
Porcelain block or high frequency plate.
9. miniaturization double resonance anti-metal RFID tag as described in claim 1, which is characterized in that the first electrode and institute
The shape for stating second electrode is that may respectively be rectangle, circle, ellipse, triangle, polyline shaped, curve-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721833897.1U CN207799725U (en) | 2017-12-25 | 2017-12-25 | A kind of miniaturization double resonance anti-metal RFID tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721833897.1U CN207799725U (en) | 2017-12-25 | 2017-12-25 | A kind of miniaturization double resonance anti-metal RFID tag |
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| Publication Number | Publication Date |
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| CN207799725U true CN207799725U (en) | 2018-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108073971A (en) * | 2017-12-25 | 2018-05-25 | 上海数斐信息科技有限公司 | A kind of miniaturization double resonance anti-metal RFID label tag |
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2017
- 2017-12-25 CN CN201721833897.1U patent/CN207799725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108073971A (en) * | 2017-12-25 | 2018-05-25 | 上海数斐信息科技有限公司 | A kind of miniaturization double resonance anti-metal RFID label tag |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 226010 east side of the fourth floor of building 4, No.9, Xindong Road, Nantong Economic and Technological Development Zone, Jiangsu Province Patentee after: Saifei Information Technology (Nantong) Co.,Ltd. Address before: 200336 21 21 Tianshan Road, Changning District, Shanghai (Room 403, building 3) Patentee before: Shanghai Yaochuan Information Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |