CN205595449U - RFID hyperfrequency tag antenna suitable for match chip fast - Google Patents
RFID hyperfrequency tag antenna suitable for match chip fast Download PDFInfo
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- CN205595449U CN205595449U CN201520502989.6U CN201520502989U CN205595449U CN 205595449 U CN205595449 U CN 205595449U CN 201520502989 U CN201520502989 U CN 201520502989U CN 205595449 U CN205595449 U CN 205595449U
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- antenna
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- high frequency
- frequency label
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Abstract
The utility model discloses a hyperfrequency tag antenna that can match the chip fast, include: the irradiator of symmetry links to each other with beta structure, the beta structure of symmetry adjusts the position with the antenna and links to each other, antenna adjustment position, bilateral symmetry links to each other with the chip. Adopt the utility model discloses shown chip under the condition that the chip impedance can not accurately be tested, can be realized carrying out conjugation impedance match to chip and antenna fast. And what the antenna impedance real part was tried one's best levels, and antenna impedance's imaginary part continuously adjustable.
Description
Technical field
This utility model relates to antenna design techniques field, particularly relates to one and can be used for RFID(Radio Frequency
Identification) hyperfrequency (UHF) label antenna of the Rapid matching chip in field.
Background technology
RFID RF identification is a kind of contactless automatic identification technology.RFID logistics, manufacture, medical treatment, transport, zero
Sell, national defence etc. aspect is widely applied.Ultra-high frequency RFID technology is the one of RFID technique.Ultra-high frequency RFID label
Main composition is antenna and chip.
After chip research and development terminate, need Design and Machining label antenna as early as possible, can reach for proofing chip
High sensitivity.
The requirement of Rapid matching chip is, reaches antenna half-wavelength maximum gain 2dB, makes match penalties minimum simultaneously.
Because the testing impedance of chip is in Smith chart edge, the test of Network Analyzer has error, adds production
The ghost effect introduced, so the resistance value of chip can not accurately be measured, actually can only know a scope.
Impedance matching refers to the impedance conjugate impedance match of chip and antenna, and under the resistance value unknown condition of chip, antenna impedance needs
Want to do in a wide scope adjustment continuously, just can be rapidly reached impedance matching.
This utility model provide a kind of can be in the method adjusting antenna impedance the most continuously.
Utility model content
The purpose of this utility model be to provide a kind of can the RFID antenna design of Rapid matching chip.Of the present utility model
Above-mentioned purpose is achieved by the following technical solutions:
First the target of designing antenna should comprise continuously controllable antenna impedance and suitable antenna gain.
It is smooth that continuously controllable antenna impedance requires that the real part of antenna impedance is tried one's best, and imaginary part is adjustable.The most permissible
By a certain antenna of processing, it is relatively fixed antenna real part；And it is empty by some position dimension amendment antenna of amendment antenna
Portion.
A kind of RFIDnt ultra-high frequency label antenna being applicable to Rapid matching chip, it is characterised in that this antenna and chip phase
Connect, including: antenna part includes the radiant body of symmetry, is connected with foldable structure, constitutes symmetrical dipole；Symmetrical dipole
Son has two distributing points；Symmetrical foldable structure, is connected with tested rotating platform position by distributing point；Tested rotating platform position, left and right
Symmetry, is connected with chip.
The radiant body of described symmetry and symmetrical foldable structure, constitute symmetrical folded dipole.Symmetrical folded dipole
Son is connected into short circuit, and connects the feeder line of bending, and feeding line portion is referred to as tested rotating platform position.
Distance between distributing point adjusts the value of antenna real part.The feeder line i.e. tested rotating platform position adjustment antenna imaginary part of bending
Value.
Described antenna uses aluminum etching or copper etching or conductive silver paste processing, and this antenna is produced on PET or PCB or pottery
On substrate.
The method realized is as follows:
A) appropriate radiation body is used to improve performance
Such as use zigzag radiant body, antenna electrical length can be effectively increased, it is often more important that chip can be maintained quite
More smooth real part is had in big bandwidth.
B) folded dipole structure reduces overall antenna length degree
Use folded dipole structure can reduce overall antenna length degree.
C) feed structure of adjustable chip imaginary part structure is used
Feed structure reserves enough surpluses so that imaginary part continuously adjustabe.
So antenna of design, benefit is that real part is equal to same value in the widest frequency band range, and imaginary part can be led to
Cross amendment size adjusting.
This utility model is not limited to a certain chip, it is possible to achieve on most ultrahigh-frequency tag chips.
Accompanying drawing explanation
Fig. 1: for antenna structure view.
Detailed description of the invention
Referring to accompanying drawing of the present utility model, describe in more detail out an embodiment of the present utility model.
The present embodiment etching aluminum processing UHF label antenna, uses UHF chips to carry out flip chip bonding.
Fig. 1 is designed antenna structure view, and antenna is connected with chip by a1.
Symmetrical radiant body a2, a4, is connected with foldable structure a5, a6；
Radiant body a2 and foldable structure a5 constitutes an arm of folded dipole；Radiant body a4 and foldable structure a6 constitutes folding
Another arm of dipole.
The two-arm of folded dipole is coupled with on distributing point a8, a9, by one section of metal wire between distributing point a8, a9
Be connected short circuit.I.e. folded dipole is connect as short circuit by a8 and a9.
Symmetrical foldable structure a5, a6 is connected with tested rotating platform position a3, a7 by distributing point a8, a9.
A3, a7 are symmetrical in tested rotating platform position, are connected with distributing point a8, a9；Described tested rotating platform position a3, a7
It is thicker feed line, makes allowances to adjustment antenna impedance.Wherein a1 is antenna and chip link position, a2, a5 and
A4, a6 are the symmetrical both sides of folded doublet；Folded doublet is connected into short circuit, by the feedback of two relatively thick bendings
Line, is connected to a1；A2 and a4 constitutes the both sides of symmetric radiation body, and the effect of this part is so that real part maintains broadband smooth;
A8 and a9 is distributing point present position, by the distance between amendment a8 and a9, can adjust the value of chip real part.A3 and a7 is
The tested rotating platform position specially designed.By the size that a3 and a7 is bigger, reserve enough to the imaginary impedance adjustment of antenna
Surplus, can be scanned antenna imaginary part by manual setting.
Use method described in the utility model can complete chip faster under the conditions of chip impedance test is inaccurate
And the impedance matching between antenna.Can use the processes antennas such as aluminum etching, copper etching, conductive silver paste, antenna can be made
Make on the substrate of the materials such as poly terephthalic acid class plastics (PET), printed circuit board (PCB) (PCB), pottery.
Above-described embodiment is citing of the present utility model, although disclosing embodiment of the present utility model for the purpose of illustration
And accompanying drawing, but it will be appreciated by those skilled in the art that: without departing from this utility model and the spirit of appended claim
With in scope, various replacements, to change and modifications be all possible.Therefore, this utility model should not be limited to embodiment and accompanying drawing
Disclosure of that.
Claims (7)
1. the RFIDnt ultra-high frequency label antenna being applicable to Rapid matching chip, it is characterised in that this antenna is connected with chip
Connect, including: symmetrical radiant body, it is connected with foldable structure；Symmetrical foldable structure, by distributing point and tested rotating platform position phase
Even；Tested rotating platform position, symmetrical, it is connected with chip.
RFIDnt ultra-high frequency label antenna the most according to claim 1, it is characterised in that the radiant body of described symmetry and symmetry
Foldable structure, constitute symmetrical folded dipole, symmetrical folded dipole is connected into short circuit, and connects the feeder line of bending, curved
Bent feeder line is referred to as tested rotating platform position.
RFIDnt ultra-high frequency label antenna the most according to claim 1 and 2, it is characterised in that the distance between distributing point adjusts
The value of antenna real part.
RFIDnt ultra-high frequency label antenna the most according to claim 1 and 2, it is characterised in that the size of tested rotating platform position
Adjust antenna impedance imaginary part.
RFIDnt ultra-high frequency label antenna the most according to claim 1 and 2, it is characterised in that the radiant body of described symmetry is
Zigzag.
RFIDnt ultra-high frequency label antenna the most according to claim 1 and 2, it is characterised in that described antenna uses aluminum etching
Or copper etches or conductive silver paste processing.
7. according to the RFIDnt ultra-high frequency label antenna described in claim 1 or 2, it is characterised in that this antenna be produced on PET or
On the substrate of PCB or pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520502989.6U CN205595449U (en) | 2015-07-10 | 2015-07-10 | RFID hyperfrequency tag antenna suitable for match chip fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520502989.6U CN205595449U (en) | 2015-07-10 | 2015-07-10 | RFID hyperfrequency tag antenna suitable for match chip fast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595449U true CN205595449U (en) | 2016-09-21 |
Family
ID=56926452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520502989.6U Active CN205595449U (en) | 2015-07-10 | 2015-07-10 | RFID hyperfrequency tag antenna suitable for match chip fast |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107339A (en) * | 2016-11-25 | 2018-06-01 | 华大半导体有限公司 | For the chip impedance of ultra-high frequency RFID label and the test method of sensitivity |
| CN109034341A (en) * | 2018-10-26 | 2018-12-18 | 上扬无线射频科技扬州有限公司 | A kind of omnidirectional's anti-medium RFID tag and its application method |
| TWI823391B (en) * | 2022-05-16 | 2023-11-21 | 智易科技股份有限公司 | Tri-band antenna module |
-
2015
- 2015-07-10 CN CN201520502989.6U patent/CN205595449U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107339A (en) * | 2016-11-25 | 2018-06-01 | 华大半导体有限公司 | For the chip impedance of ultra-high frequency RFID label and the test method of sensitivity |
| CN109034341A (en) * | 2018-10-26 | 2018-12-18 | 上扬无线射频科技扬州有限公司 | A kind of omnidirectional's anti-medium RFID tag and its application method |
| TWI823391B (en) * | 2022-05-16 | 2023-11-21 | 智易科技股份有限公司 | Tri-band antenna module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |