CN104953236B - RFID (radio frequency identification) label antenna with isolating slot - Google Patents

RFID (radio frequency identification) label antenna with isolating slot Download PDF

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Publication number
CN104953236B
CN104953236B CN201510318719.4A CN201510318719A CN104953236B CN 104953236 B CN104953236 B CN 104953236B CN 201510318719 A CN201510318719 A CN 201510318719A CN 104953236 B CN104953236 B CN 104953236B
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China
Prior art keywords
antenna
described
gain
provided
bar
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CN201510318719.4A
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Chinese (zh)
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CN104953236A (en
Inventor
张有磊
曲波
徐宝华
潘晓东
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烟台惠通网络技术有限公司
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Publication of CN104953236A publication Critical patent/CN104953236A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles

Abstract

The invention discloses an RFID (radio frequency identification) label antenna with an isolating slot. The RFID label antenna comprises a first antenna and a second antenna, wherein a distance between the first antenna and the second antenna can be telescopically adjusted; the reading distance is as long as 11-13m through test; the RFID label antenna can be extended, namely the length can be adjusted; the RFID label antenna can be applied to a set package with a basically fixed width and an undetermined length, is extremely high in practical value, high in various antenna properties, small in standing-wave ratio, low in return loss and high in gain and has omnidirectivity.

Description

It is provided with isolation channel rfid Label antenna

Technical field

The present invention relates to a kind of rfid label antenna being provided with isolation channel.

Background technology

At present, RF identification is rfid(radio Frequency identification) technology, also known as electronic tag, radio frequency identification, it is that one kind can identify specific objective by radio signals and read and write related data, and without setting up the communication technology of machinery or optical contact between identifying system and specific objective.Conventional passive rfid There are low frequency (125k ~ 134.2k), high frequency (13.56mhz), hyperfrequency (860-960mhz).rfid As the important component part of rfid system, its performance is by the efficiency of whole for strong influence rfid system and quality for label antenna.Impact rfid The principal element of antenna performance includes size, working frequency range, impedance and gain of antenna etc..Typically conventional rfid antenna, frequently with bending line style dipole form, is easy to reduce antenna size and antenna processing.The type antenna radiation pattern is perpendicular to antenna surface, is attached at target object tapered outer surface when therefore using;When the length of object changes therewith it is desirable to antenna also changes therewith, its gain also therewith change it is therefore desirable to design a antenna that can change according to length, in addition, its every antenna performance be also required to meet require.

Content of the invention

It is an object of the invention to overcoming disadvantages described above, provide a kind of rfid label antenna being provided with isolation channel.

For achieving the above object, the concrete scheme of the present invention is as follows: a kind of rfid label antenna being provided with isolation channel, includes first antenna and the second antenna, between described first antenna and the second antenna, distance is telescopically adjustable.

First antenna includes strip the first noumenon, one end of described the first noumenon is provided with the first gain bar, the free end of described first gain bar is provided with the first gain antenna of an arc, first antenna also includes two coupling slots, described two coupling other ends towards the first noumenon for the channel opening, described two coupling slots are set in parallel in the first noumenon, and the both sides up and down of each coupling slot described are equipped with jagged serrated slot;Described second antenna includes one second body, the length of described the first noumenon is more than the second body, one end of described second body is provided with the second gain bar, the free end of the second gain bar is provided with the second gain antenna of an arc, also include two and couple bar located at the second body other end with coupling slot coordinates, described two coupling bars be arranged in parallel, the both sides up and down of each coupling bar described are equipped with the jagged serrate projections with serrated slot cooperation, during cooperation, described serrate projections are located in serrated slot;

Also include t font adjusting rod, described second is provided with the regulation recess towards the first noumenon for the opening in vivo, and the horizontal segment of described t font adjusting rod is located at and adjusts in recess;

If the free end of coupling bar is l with the distance on the interior base of coupling slot, if the free end of horizontal segment of t font adjusting rod is m, described l=m*3.75 with the horizontal range on the interior base adjusting recess.

Wherein, one end of described the first noumenon is arcwall face, and radian is identical with the radian of the first gain antenna.

Wherein, one end of described second body is arcwall face, and radian is identical with the radian of the second gain antenna.

Wherein, described first gain antenna is identical with the radian of the second gain antenna, is 60 ° -80 °.

Wherein, the side of described first gain antenna is additionally provided with the 3rd gain bar, and the free end of described 3rd gain bar is provided with the 3rd gain antenna.

Wherein, the radian of described 3rd gain bar is identical with the radian size of the first gain bar.

Wherein, the height of described the first noumenon is less than 10cm.

Wherein, described first antenna is provided with the isolation channel of strip,

Wherein, described second antenna and first antenna are provided with increasing frequency breach.

Beneficial effects of the present invention: 1, reading distance is long, its reading distance is up to 11-13m after tested.The reading distance of common rfid label antenna is respectively less than 10m.2nd, stretchable;I.e. adjustable length, it can be used for, and width is substantially certain, but on the packaging kit of indefinite length, has great practical value.3rd, every antenna performance is good, standing-wave ratio is little, return loss is low, high gain and possess omni-directional.Its hyperfrequency be (860-960mhz) especially 925mhz about frequency usage when performance higher.

Brief description

Fig. 1 is the schematic diagram of the present invention;

Fig. 2 is the schematic diagram after the elongation of the present invention;

Fig. 3 is the first antenna schematic diagram of the present invention;

Fig. 4 is the second antenna schematic diagram of the present invention;

Fig. 5 is the schematic diagram of the rfid label being made using the present invention;

Fig. 6 is the testing impedance datagram of the present invention;

Fig. 7 is the return loss test data figure of the present invention;

Fig. 8 is the directivity test data figure of the present invention;

Description of reference numerals in Fig. 1 to Fig. 8:

1- first antenna;11- coupling slot;12- serrated slot;13- the first gain bar;14- first gain antenna;15- the 3rd gain bar;16- the 3rd gain antenna;17- isolation channel;18- increases frequency breach;

2- second antenna;21- couples bar;22- serrate projections;23- the second gain bar;24- second gain antenna;25- adjusts recess;

3-t font adjusting rod;

4- dielectric-slab;

5- label chip;

6- substrate.

Specific embodiment

The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings, is not that the practical range of the present invention is confined to this.

As shown in Figures 1 to 8, a kind of rfid label antenna being provided with isolation channel described in the present embodiment, includes first antenna 1 and the second antenna 2, between described first antenna 1 and the second antenna 2, distance is telescopically adjustable.Include substrate 6, and the rfid label antenna being provided with isolation channel on substrate 6 using the rfid label that it makes, described second antenna 2 is provided with dielectric-slab 4, dielectric-slab 4 is provided with label chip 5, described label chip 5 and antenna are electrically connected with.

A kind of rfid label antenna being provided with isolation channel described in the present embodiment, first antenna 1 includes strip the first noumenon, one end of described the first noumenon is provided with the first gain bar 13, the free end of described first gain bar 13 is provided with the first gain antenna 14 of an arc, first antenna also includes two coupling slots 11, described two coupling slot 11 openings are towards the other end of the first noumenon, described two coupling slots 11 are set in parallel in the first noumenon, and the both sides up and down of each coupling slot 11 described are equipped with jagged serrated slot 12;Described second antenna 2 includes one second body, the length of described the first noumenon is more than the second body, one end of described second body is provided with the second gain bar 23, the free end of the second gain bar 23 is provided with the second gain antenna 24 of an arc, also include two and couple bar 21 located at the second body other end with coupling slot 11 coordinates, described two coupling bars 21 be arranged in parallel, the both sides up and down of each coupling bar 21 described are equipped with the jagged serrate projections 22 with serrated slot 12 cooperation, during cooperation, described serrate projections 22 are located in serrated slot 12;A kind of rfid label antenna being provided with isolation channel described in the present embodiment, also includes t font adjusting rod 3, and described second is provided with the regulation recess 25 towards the first noumenon for the opening in vivo, and the horizontal segment of described t font adjusting rod 3 is located at and adjusts in recess 25;A kind of rfid label antenna being provided with isolation channel described in the present embodiment, if the free end of coupling bar 21 is l with the distance on the interior base of coupling slot 11, if the free end of horizontal segment of t font adjusting rod 3 is m, described l=m*3.75 with the horizontal range on the interior base adjusting recess 25.

This programme achieves by features described above that reading distance is long, and its reading distance is up to 11-13m after tested.The reading distance of common rfid label antenna is respectively less than 10m.In addition, it is stretchable;I.e. adjustable length, it can be used for, and width is substantially certain, but on the packaging kit of indefinite length, has great use value, realizes note attached, in addition, can increase without limitation in theory in Different Package.Finally, its every antenna performance is good, standing-wave ratio is little, return loss is low, high gain and possess omni-directional.;Its in 925mhz about frequency usage when performance higher.A kind of rfid label antenna being provided with isolation channel described in the present embodiment, one end of described the first noumenon is arcwall face, and radian is identical with the radian of the first gain antenna 14.It is arranged such, further increases gain performance, and reduce return loss, increase radiation omni-directional, optimum results are preferable.A kind of rfid label antenna being provided with isolation channel described in the present embodiment, one end of described second body is arcwall face, and radian is identical with the radian of the second gain antenna 24.Radian is identical can be reduced standing wave between two antennas and is formed, and reduce wave interference, reduce standing-wave ratio.A kind of rfid label antenna being provided with isolation channel described in the present embodiment, described first gain antenna 14 is identical with the radian of the second gain antenna 24, is 60 ° -80 °.By emulation and actual experiment, the properties of this radian antenna are optimal.

A kind of rfid label antenna being provided with isolation channel described in the present embodiment, the side of described first gain antenna 14 is additionally provided with the 3rd gain bar 15, and the free end of described 3rd gain bar 15 is provided with the 3rd gain antenna 16;A kind of rfid label antenna being provided with isolation channel described in the present embodiment, the radian of described 3rd gain bar 15 is identical with the radian size of the first gain bar 13;In the same manner, it is arranged such, further increases gain performance, and reduce return loss, increase radiation omni-directional, optimum results are preferable.

A kind of rfid label antenna being provided with isolation channel described in the present embodiment, the height of described the first noumenon is less than 10cm.A kind of rfid label antenna being provided with isolation channel described in the present embodiment, described first antenna 1 is provided with the isolation channel 17 of strip, described isolation channel 17 is located between two coupling slots 11, a kind of rfid label antenna being provided with isolation channel described in the present embodiment, described second antenna 2 near first antenna 1 two jiaos at and first antenna 1 near the second antenna 2 while Liang Jiaochu be provided with increasing frequency breach 18.Increasing frequency breach 18 can increase isolation, reduce standing wave and formed so that standing-wave ratio is close to 1.The antenna of this programme also has preferable performance in terms of omni-directional, and as described in Figure 8, in terms of omni-directional, its performance is excellent, has 360 degree of no equidistant omni-directional in dead angle.As shown in fig. 7, its return loss performance projects, especially in 925mhz, return loss minima reaches -65db, is held in below -10db in the return loss of whole high band, and water is average more than other similar antenna levels.

Set through surveying, it all reaches 11-13m using coverage under different stretch length.Test result is as follows:

In addition, the input impedance of this antenna measurement is as shown in fig. 6, measured impedance is 11+144j ohm in 925mhz, with chip monza4 The impedance 11+143j of dura reaches conjugate impedance match.Label can reach optimal effectiveness in 925mhz.

The above is only a preferred embodiment of the present invention, therefore the equivalence changes done of the construction described in all scopes according to present patent application, feature and principle or modification, it is included in the protection domain of present patent application.

Claims (5)

1. a kind of rfid label antenna being provided with isolation channel it is characterised in that: include first antenna (1) and the second antenna (2), between described first antenna (1) and the second antenna (2), distance is telescopically adjustable;
Described first antenna (1) is provided with the isolation channel (17) of strip;
First antenna (1) includes strip the first noumenon, one end of described the first noumenon is provided with the first gain bar (13), the free end of described first gain bar (13) is provided with first gain antenna (14) of an arc, first antenna (1) also includes two coupling slots (11), described two coupling slot (11) openings are towards the other end of the first noumenon, described two coupling slots (11) are set in parallel in the first noumenon, and the both sides up and down of described each coupling slot (11) are equipped with jagged serrated slot (12);Described second antenna (2) includes one second body, the length of described the first noumenon is more than the second body, one end of described second body is provided with the second gain bar (23), the free end of the second gain bar (23) is provided with second gain antenna (24) of an arc, also include two and couple bar (21) located at what the second body other end and coupling slot (11) coordinated, described two couplings bar (21) be arranged in parallel, the both sides up and down of each coupling bar (21) described are equipped with the jagged serrate projections (22) coordinating with serrated slot (12), during cooperation, described serrate projections (22) are located in serrated slot (12);
Also include t font adjusting rod (3), described second is provided with the regulation recess (25) towards the first noumenon for the opening in vivo, and the horizontal segment of described t font adjusting rod (3) is located at and adjusts in recess (25);
If the free end of coupling bar (21) is l with the distance on the interior base of coupling slot (11), if the free end of horizontal segment of t font adjusting rod (3) is m, described l=m*3.75 with the horizontal range on the interior base adjusting recess (25);
One end of described the first noumenon is arcwall face, and radian is identical with the radian of the first gain antenna (14);
One end of described second body is arcwall face, and radian is identical with the radian of the second gain antenna (24).
2. a kind of rfid label antenna being provided with isolation channel according to claim 1 it is characterised in that: described first gain antenna (14) is identical with the radian of the second gain antenna (24), is 60 ° -80 °.
3. a kind of rfid label antenna being provided with isolation channel according to claim 1, it is characterized in that: the side of described first gain antenna (14) is additionally provided with the 3rd gain bar (15), and the free end of described 3rd gain bar (15) is provided with the 3rd gain antenna (16).
4. a kind of rfid label antenna being provided with isolation channel according to claim 3 it is characterised in that: the radian of described 3rd gain bar (15) is identical with the radian size of the first gain bar (13).
5. a kind of rfid label antenna being provided with isolation channel according to claim 1 it is characterised in that: the height of described the first noumenon be less than 10cm.
CN201510318719.4A 2015-06-11 2015-06-11 RFID (radio frequency identification) label antenna with isolating slot CN104953236B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510318719.4A CN104953236B (en) 2015-06-11 2015-06-11 RFID (radio frequency identification) label antenna with isolating slot

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201510318719.4A CN104953236B (en) 2015-06-11 2015-06-11 RFID (radio frequency identification) label antenna with isolating slot
PCT/CN2016/085113 WO2016197910A1 (en) 2015-06-11 2016-06-07 Rfid tag antenna with isolation groove
CN201680023685.9A CN107534204A (en) 2015-06-11 2016-06-07 RFID label antenna provided with isolation channel

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CN104953236A CN104953236A (en) 2015-09-30
CN104953236B true CN104953236B (en) 2017-02-01

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CN201680023685.9A CN107534204A (en) 2015-06-11 2016-06-07 RFID label antenna provided with isolation channel

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WO (1) WO2016197910A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104953236B (en) * 2015-06-11 2017-02-01 烟台惠通网络技术有限公司 RFID (radio frequency identification) label antenna with isolating slot
CN104916906A (en) * 2015-06-11 2015-09-16 江健良 Insertion coupling capacitor RFID tag antenna
CN104866894A (en) * 2015-06-11 2015-08-26 江健良 Coupling capacitance RFID label provided with isolation groove

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CN101048786A (en) * 2004-08-26 2007-10-03 皇家飞利浦电子股份有限公司 Rfid tag having a folded dipole
CN101095177A (en) * 2004-11-15 2007-12-26 传感电子公司 Combination eas and rfid label or tag
CN101243581A (en) * 2005-06-14 2008-08-13 索尼化学&信息部件株式会社;索尼株式会社 The antenna device
CN101501933A (en) * 2006-06-30 2009-08-05 诺基亚公司 Mechanically tunable antenna for communication devices
CN103646270A (en) * 2013-12-03 2014-03-19 北京中电华大电子设计有限责任公司 Wideband electronic tag

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US8115688B2 (en) * 2008-10-24 2012-02-14 Intelleflex Corporation RF conduit and systems implementing same
CN103646277A (en) * 2013-12-03 2014-03-19 北京中电华大电子设计有限责任公司 Self-similar structure broadband radio frequency identification tag
CN104408512A (en) * 2014-08-27 2015-03-11 北京中电华大电子设计有限责任公司 Ultra-wide frequency band electronic tag
CN104953236B (en) * 2015-06-11 2017-02-01 烟台惠通网络技术有限公司 RFID (radio frequency identification) label antenna with isolating slot
CN204760527U (en) * 2015-06-11 2015-11-11 宗淑英 RFID tag antenna with shield groove
CN204793163U (en) * 2015-06-11 2015-11-18 邝嘉豪 Insert and close coupling capacitance RFID tag antenna

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101048786A (en) * 2004-08-26 2007-10-03 皇家飞利浦电子股份有限公司 Rfid tag having a folded dipole
CN101095177A (en) * 2004-11-15 2007-12-26 传感电子公司 Combination eas and rfid label or tag
CN101243581A (en) * 2005-06-14 2008-08-13 索尼化学&信息部件株式会社;索尼株式会社 The antenna device
CN101501933A (en) * 2006-06-30 2009-08-05 诺基亚公司 Mechanically tunable antenna for communication devices
CN103646270A (en) * 2013-12-03 2014-03-19 北京中电华大电子设计有限责任公司 Wideband electronic tag

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WO2016197910A1 (en) 2016-12-15
CN107534204A (en) 2018-01-02
CN104953236A (en) 2015-09-30

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