CN105048060A - Anti-interference antenna for radio frequency identification (RFID) tag reader - Google Patents
Anti-interference antenna for radio frequency identification (RFID) tag reader Download PDFInfo
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- CN105048060A CN105048060A CN201510436348.XA CN201510436348A CN105048060A CN 105048060 A CN105048060 A CN 105048060A CN 201510436348 A CN201510436348 A CN 201510436348A CN 105048060 A CN105048060 A CN 105048060A
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- tag reader
- rfid
- label
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Abstract
The invention provides an anti-interference antenna for a radio frequency identification (RFID) tag reader. An outer ring of the antenna for the tag reader is provided with at least one closed coil ring which is articulated by a lead; and a resisting electromagnetic field is generated to prevent an external alternating electromagnetic field from changing, so that the anti-interference function of a tag reading head antenna is effectively realized.
Description
Technical field
The present invention relates to RFID field, particularly relate to the antenna technical field of RFID reader.
Background technology
Double frequency RFID is operated on two frequency bins, and low frequency is used for read head to transmitted tag energy electromagnetic ripple, and high frequency is used for label and launches information to read head.Their frequency range respectively, low frequency hundreds of KHz, a few MHz of high frequency.High frequency antenna, while receiving the frequency electromagnetic waves that sends of label, also can receive the various electromagnetic waves from space.Because high-frequency band is in medium wave and the shortwave frequency range in broadcasting station, experiment proves, when space exists the electromagnetic wave in the close broadcasting station of frequency, the high frequency receiving circuit of read head will be subject to serious interference, and the distance of read head reading tag is shortened greatly.
Summary of the invention
In order to overcome the above-mentioned interference problem that tag reader antenna exists, the invention provides a kind of anti-interference antenna of RFID label tag reader.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of anti-interference antenna of RFID label tag, and label 6 reader antenna outer ring arranges at least one closed line ring 3 by wire articulating.
Described label 6 is double frequency RFID label tag, and tag reader antenna is annular low-frequency antenna 2 and annular high frequency antenna 1.
Described label 6 is active label, and tag reader antenna is high frequency antenna 1.
In described closed line ring 3, at least a set of label antenna is set.
The anti-interference antenna of RFID label tag reader of the present invention, adds a closed line ring in the outer ring of antenna, produce the change that an opposing electromagnetic field stops outside alternating electromagnetic field, effectively achieve the anti-interference function of label read head antenna.
Accompanying drawing explanation
Fig. 1 is the Principle of Antenna figure of double frequency RFID read head.
Fig. 2 is the Principle of Antenna figure that the present invention adds the double frequency RFID reader of closed line ring.
Fig. 3 is the double frequency RFID reader antenna magnetic field schematic diagram that the present invention adds closed line ring.
Fig. 4 is the fundamental diagram of RFID label tag of the present invention and closed line ring.
Fig. 5 is the active label Principle of Antenna figure that the present invention adds closed line ring.
Fig. 6 is that RFID label tag reader many covers antenna outside of the present invention is provided with closing coil schematic diagram.
In figure: 1, high frequency antenna, 2, low-frequency antenna, 3, closed line ring, 4, external electromagnetic field, 5, opposing electromagnetic field, 6, label, 7, the closed magnetic line of force.
Embodiment
The antenna of double frequency RFID label tag read head generally comprises two loop aerials: a low-frequency antenna 2, high frequency antenna 1, its layout as shown in Figure 1, the layout of antenna also can be low-frequency antenna at inner lane, high frequency antenna is in outer ring.When RFID dual-frequency label close in the electromagnetic coverage of antenna time, read head just can read the information that label sends.High frequency antenna, while receiving the frequency electromagnetic waves that sends of label, also can receive the various electromagnetic waves from space.Experiment proves, when space exists the electromagnetic wave in the close broadcasting station of frequency, the high frequency receiving circuit of read head will be subject to serious interference.
The present invention proposes a kind of antenna design method shielding external disturbance, namely add a closed line ring 3 in the outer ring of antenna, as shown in Figure 2, this closed line ring 3 is formed by wire articulating, is positioned at the outer ring of primary antenna.
Faraday's law shows, when outside alternating electromagnetic field 4 is through a closed line ring 3, will produce alternating current in closed line ring 3.And generation one opposing electromagnetic field 5 is gone the change stoping outside alternating electromagnetic field 4 by this electric current in coil, this interception is exactly to outside shielding electromagnetic waves, as shown in Figure 3.
Because label sizes is little, be positioned at again the space of closed line ring 3, the closed magnetic line of force 7 that electromagnetic field that label 6 sends produces is closed, such closed electrical magnetic wave can not in closing coil 3 generation current, therefore can not conductively-closed, as shown in Figure 4.
For active label, label tape battery, initiatively electromagnetic signals, therefore read head antenna does not have low frequencies antenna, adopts and uses the same method formed shown in antenna diagram 5.
Can also have in closed line ring 3 and overlap antenna more, as shown in Figure 6.
The present invention is described by embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various change or equivalence replacement to these characteristic sum embodiments.In addition, under the teachings of the present invention, can modify to adapt to concrete situation and material to these characteristic sum embodiments and can not the spirit and scope of the present invention be departed from.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, and the embodiment in the right of all the application of falling into all belongs to protection scope of the present invention.
Claims (4)
1. an anti-interference antenna for RFID label tag reader, is characterized in that: label (6) reader antenna outer ring arranges at least one closed line ring (3) by wire articulating.
2. the anti-interference antenna of a kind of RFID label tag reader according to claim 1, is characterized in that: described label (6) is double frequency RFID label tag, and tag reader antenna is annular low-frequency antenna (2) and annular high frequency antenna (1).
3. the anti-interference antenna of a kind of RFID label tag reader according to claim 1, is characterized in that: described label (6) is active label, tag reader antenna is high frequency antenna (1).
4. the anti-interference antenna of a kind of RFID label tag reader according to claim 1, is characterized in that: arrange at least a set of tag reader antenna in described closed line ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436348.XA CN105048060A (en) | 2015-07-23 | 2015-07-23 | Anti-interference antenna for radio frequency identification (RFID) tag reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510436348.XA CN105048060A (en) | 2015-07-23 | 2015-07-23 | Anti-interference antenna for radio frequency identification (RFID) tag reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105048060A true CN105048060A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510436348.XA Pending CN105048060A (en) | 2015-07-23 | 2015-07-23 | Anti-interference antenna for radio frequency identification (RFID) tag reader |
Country Status (1)
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| CN (1) | CN105048060A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229691A (en) * | 2016-09-09 | 2016-12-14 | 爱康普科技（大连）有限公司 | Double frequency RFID label tag reads the antenna of equipment, double frequency RFID label tag reads equipment |
| CN106252834A (en) * | 2016-09-09 | 2016-12-21 | 爱康普科技（大连）有限公司 | Antenna and tag reading device |
| WO2020197408A1 (en) * | 2019-03-26 | 2020-10-01 | Easyzeek As | Nfc tag and nfc reader device for detecting an point of interest, poi. |
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| CN1425169A (en) * | 2000-04-18 | 2003-06-18 | 纳格雷德股份有限公司 | Electronic label |
| WO2003096478A1 (en) * | 2002-04-25 | 2003-11-20 | Cet Technologies Pte Ltd | An antenna |
| CN1489806A (en) * | 2000-12-18 | 2004-04-14 | ������������ʽ���� | Antenna for RFID |
| CN1662927A (en) * | 2002-06-17 | 2005-08-31 | 日立麦克赛尔株式会社 | Non-contact communication system information carrier |
| US20050212707A1 (en) * | 2004-03-23 | 2005-09-29 | Egbert William C | Radio frequency identification tags with compensating elements |
| US6956481B1 (en) * | 1998-07-20 | 2005-10-18 | Germplus | Metal screened electronic labelling system |
| CN101896922A (en) * | 2007-10-19 | 2010-11-24 | 佩特拉特克国际有限公司 | Especially the RFID label that uses near conductive objects |
| CN102119395A (en) * | 2008-06-11 | 2011-07-06 | 艾利丹尼森公司 | RFID device with conductive loop shield |
| CN204834839U (en) * | 2015-07-23 | 2015-12-02 | 爱康普科技（大连）有限公司 | RFID label reader's anti -interference antenna |
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2015
- 2015-07-23 CN CN201510436348.XA patent/CN105048060A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6956481B1 (en) * | 1998-07-20 | 2005-10-18 | Germplus | Metal screened electronic labelling system |
| CN1425169A (en) * | 2000-04-18 | 2003-06-18 | 纳格雷德股份有限公司 | Electronic label |
| CN1489806A (en) * | 2000-12-18 | 2004-04-14 | ������������ʽ���� | Antenna for RFID |
| WO2003096478A1 (en) * | 2002-04-25 | 2003-11-20 | Cet Technologies Pte Ltd | An antenna |
| CN1662927A (en) * | 2002-06-17 | 2005-08-31 | 日立麦克赛尔株式会社 | Non-contact communication system information carrier |
| US20050212707A1 (en) * | 2004-03-23 | 2005-09-29 | Egbert William C | Radio frequency identification tags with compensating elements |
| CN101896922A (en) * | 2007-10-19 | 2010-11-24 | 佩特拉特克国际有限公司 | Especially the RFID label that uses near conductive objects |
| CN102119395A (en) * | 2008-06-11 | 2011-07-06 | 艾利丹尼森公司 | RFID device with conductive loop shield |
| CN204834839U (en) * | 2015-07-23 | 2015-12-02 | 爱康普科技（大连）有限公司 | RFID label reader's anti -interference antenna |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229691A (en) * | 2016-09-09 | 2016-12-14 | 爱康普科技（大连）有限公司 | Double frequency RFID label tag reads the antenna of equipment, double frequency RFID label tag reads equipment |
| CN106252834A (en) * | 2016-09-09 | 2016-12-21 | 爱康普科技（大连）有限公司 | Antenna and tag reading device |
| CN106252834B (en) * | 2016-09-09 | 2022-11-18 | 爱康普科技（大连）有限公司 | Antenna and tag reading apparatus |
| WO2020197408A1 (en) * | 2019-03-26 | 2020-10-01 | Easyzeek As | Nfc tag and nfc reader device for detecting an point of interest, poi. |
| SE545500C2 (en) * | 2019-03-26 | 2023-10-03 | Easyzeek As | Nfc tag and nfc reader device for detecting an point of interest, poi. |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151111 |