CN103515691A - Rfid antenna - Google Patents
Rfid antenna Download PDFInfo
- Publication number
- CN103515691A CN103515691A CN201210223619.XA CN201210223619A CN103515691A CN 103515691 A CN103515691 A CN 103515691A CN 201210223619 A CN201210223619 A CN 201210223619A CN 103515691 A CN103515691 A CN 103515691A
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- CN
- China
- Prior art keywords
- coil
- rfid antenna
- feed element
- reader
- electricity supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses an RFID antenna which comprises a main coil forming a magnetic field and a coupling device connecting the main coil to an alternating-current power supply of a reader. The RFID antenna is characterized in that the coupling device comprises an auxiliary coil and a feed element. The auxiliary coil and the main coil are arranged on the same plane and in coupling connection, the shape of the feed element is identical with the shape of the auxiliary coil, the feed element is arranged under the auxiliary coil, the feed element and the auxiliary are in coupling connection, and the feed element is connected with the alternating-current power supply. Compared with an existing antenna, the RFID antenna has the advantage that due to the fact that mechanical connection like spring pins is omitted, the reliability of the RFID antenna is improved.
Description
Technical field
The present invention relates to RFID antenna technical field, particularly a kind of RFID antenna that is used in particular for mobile radio station.
Background technology
RFID(radio-frequency (RF) identification) comprising the memory cell that is placed in object and contains data and comprise can be from closely with the reader of wireless way for transmitting data.Memory cell does not have its oneself power supply, but read this memory and send the required energy of data reading, is that magnetic field from being produced by reader obtains.Such memory cell is referred to herein as " label ", because it has small size and special purposes.
In most of the cases, reader is only for the self-contained unit of RFID.This reader can be also the expansion of certain other device, such as mobile radio station.In that case, the processor of mobile radio station and display are used to analyze and show the data that read from label.No matter how reader is realized, and this reader must have its oneself wiring (wiring), for generation of the field that is established to the connection of label by it.Some rfid systems are operated in microwave frequency, and in that case, the wiring of reader plays antenna.
Yet most of rfid systems are operated in the significantly lower frequency of 13.56MHz.So, the wiring of described reader plays pure coil, and under this Sui condition, its only actually produces magnetic field in operating frequency.Label has its oneself coil, and the part energy in magnetic field is transferred to the electronic circuit of label by this coil.
In simple situation, RFID antenna is the planar coil on the identical circuit board of the circuit board at the circuit place with reader.Between this planar coil and circuit board, rely on some spring needles to be connected, the time one is long, after spring needle fatigue, cause between antenna and circuit board, be connected unreliable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of RFID antenna being connected firmly for the existing deficiency of above-mentioned prior art.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
RFID antenna, comprise and form the main coil in magnetic field and the coupling device that main coil is connected to the AC power of reader, it is characterized in that, this coupling device comprises ancillary coil and electricity supply element, described ancillary coil and described main coil are in the same plane and be of coupled connections, the shape of described electricity supply element is identical with described ancillary coil and be positioned at the below of described ancillary coil, between described electricity supply element and described ancillary coil, is of coupled connections, and this electricity supply element is connected with described AC power.
Advantage of the present invention is: compare with known antenna, owing to having omitted for example such mechanical engagement of spring needle, so the reliability of RFID antenna improves.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further describe the present invention.
Referring to Fig. 1, RFID antenna, comprise and form the main coil 10 in magnetic field and the coupling device that main coil is connected to the AC power 40 of reader, this coupling device comprises ancillary coil 20 and electricity supply element 30, ancillary coil 20 is in the same plane and be of coupled connections with main coil 10, the shape of electricity supply element 30 is identical with ancillary coil 20 and be positioned at the below of ancillary coil 20, between electricity supply element 30 and ancillary coil 20, is of coupled connections, and this electricity supply element 30 is connected with AC power 40.
Claims (1)
1.RFID antenna, comprise and form the main coil in magnetic field and the coupling device that main coil is connected to the AC power of reader, it is characterized in that, this coupling device comprises ancillary coil and electricity supply element, described ancillary coil and described main coil are in the same plane and be of coupled connections, the shape of described electricity supply element is identical with described ancillary coil and be positioned at the below of described ancillary coil, between described electricity supply element and described ancillary coil, is of coupled connections, and this electricity supply element is connected with described AC power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223619.XA CN103515691A (en) | 2012-06-29 | 2012-06-29 | Rfid antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223619.XA CN103515691A (en) | 2012-06-29 | 2012-06-29 | Rfid antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103515691A true CN103515691A (en) | 2014-01-15 |
Family
ID=49898032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210223619.XA Pending CN103515691A (en) | 2012-06-29 | 2012-06-29 | Rfid antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103515691A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107590521A (en) * | 2017-10-17 | 2018-01-16 | 工正集团有限公司 | A kind of printer ink Antiforge system |
| CN107705408A (en) * | 2017-10-31 | 2018-02-16 | 温州智享知识产权顾问有限责任公司 | A kind of campus parent picks gate control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356687A (en) * | 2006-01-09 | 2009-01-28 | 脉冲芬兰有限公司 | RFID antenna |
| CN202651347U (en) * | 2012-06-29 | 2013-01-02 | 上海英内电子标签有限公司 | Rfid antenna |
-
2012
- 2012-06-29 CN CN201210223619.XA patent/CN103515691A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101356687A (en) * | 2006-01-09 | 2009-01-28 | 脉冲芬兰有限公司 | RFID antenna |
| CN202651347U (en) * | 2012-06-29 | 2013-01-02 | 上海英内电子标签有限公司 | Rfid antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107590521A (en) * | 2017-10-17 | 2018-01-16 | 工正集团有限公司 | A kind of printer ink Antiforge system |
| CN107705408A (en) * | 2017-10-31 | 2018-02-16 | 温州智享知识产权顾问有限责任公司 | A kind of campus parent picks gate control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |