CN104979617B - RFID (Radio Frequency Identification) label antenna provided with frequency-increasing notch - Google Patents
RFID (Radio Frequency Identification) label antenna provided with frequency-increasing notch Download PDFInfo
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- CN104979617B CN104979617B CN201510315514.0A CN201510315514A CN104979617B CN 104979617 B CN104979617 B CN 104979617B CN 201510315514 A CN201510315514 A CN 201510315514A CN 104979617 B CN104979617 B CN 104979617B
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- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 102000011842 Serrate-Jagged Proteins Human genes 0.000 claims description 7
- 108010036039 Serrate-Jagged Proteins Proteins 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 2
- 241001269524 Dura Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses an RFID (Radio Frequency Identification) label antenna provided with a frequency-increasing notch. The antenna comprises a first antenna and a second antenna, wherein the distance between the first antenna and the second antenna can be flexibly adjusted; the antenna is long in reading distance, and the reading distance tested can reach 11-13m; the antenna can be stretched, which means the length is adjustable; the antenna can be used for pair packages with basically certain width and uncertain length. The antenna has extremely huge practical value, is good in various antenna performances, small in standing-wave ratio, low in return loss and high in gain, and is omnidirectional.
Description
Technical field
The present invention relates to a kind of be provided with the rfid label antenna increasing frequency breach.
Background technology
At present, RF identification is rfid(radio frequency identification) technology, also known as electronic tag,
Radio frequency identification, is that one kind can identify specific objective by radio signals and read and write related data, and without identifying system
The communication technology of machinery or optical contact is set up and specific objective between.Conventional passive rfid have low frequency (125k ~
134.2k), high frequency (13.56mhz), hyperfrequency (860-960mhz).Rfid label antenna is as the important composition of rfid system
Part, its performance is by the efficiency of whole for strong influence rfid system and quality.The principal element of impact rfid antenna performance
Including the size of antenna, working frequency range, impedance and gain etc..Typically conventional rfid antenna is frequently with bending line style dipole shape
Formula, is easy to reduce antenna size and antenna processing.The type antenna radiation pattern is perpendicular to antenna surface, is attached at when therefore using
Target object tapered outer surface；When the length of object changes therewith it is desirable to antenna also changes therewith, its gain also changes therewith
Become it is therefore desirable to design a antenna that can change according to length, in addition, its every antenna performance is also required to meet wanting
Ask.
Content of the invention
It is an object of the invention to overcoming disadvantages described above, provide a kind of rfid label sky being provided with and increasing frequency breach
Line.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of rfid label antenna being provided with increasing frequency breach, bag
First antenna and the second antenna are included, between described first antenna and the second antenna, distance is telescopically adjustable.
First antenna includes strip the first noumenon, and one end of described the first noumenon is provided with the first gain bar, and described
One gain bar is provided with the first gain antenna of an arc away from one end of first antenna, and first antenna also includes two couplings
Groove, described two coupling channel openings are set in parallel in the first noumenon towards the other end of the first noumenon, described two coupling slots,
The both sides up and down of each coupling slot described are equipped with jagged serrated slot；Described second antenna includes one second body, institute
The length stating the first noumenon is more than the second body, and one end of described second body is provided with the second gain bar, the second gain bar away from
One end of second antenna is provided with the second gain antenna of an arc, also include two located at the second body other end with couple
The coupling bar of groove cooperation, described two coupling bars be arranged in parallel, and the both sides up and down of each coupling bar described are equipped with and serrated slot
The jagged serrate projections of 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, institute in vivo
The horizontal segment stating t font adjusting rod is located in regulation recess；
If the free end of coupling bar is l with the distance on the interior base of coupling slot, if the freedom of the horizontal segment of t font adjusting rod
End 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 described 3rd gain bar was away from first day
One end of line 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.Common rfid label
The reading distance of antenna is respectively less than 10m.2nd, stretchable；I.e. adjustable length, it can be used for, and width is substantially certain, but indefinite length
On packaging kit, there is great practical value.3rd, every antenna performance is good, standing-wave ratio is little, return loss is low, high gain and tool
Standby 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
Section 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 the reality the present invention
Apply scope and be confined to this.
As shown in Figures 1 to 8, a kind of described in the present embodiment is provided with the rfid label antenna increasing frequency breach, includes the
One antenna 1 and the second antenna 2, between described first antenna 1 and the second antenna 2, distance is telescopically adjustable.Made using it
Rfid label includes substrate 6, and the rfid label antenna being provided with increasing frequency breach on substrate 6, on described second antenna 2
It 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 described in the present embodiment is provided with the rfid label antenna increasing frequency breach, and first antenna 1 includes strip the
One body, one end of described the first noumenon is provided with the first gain bar 13, and described first gain bar 13 is away from one end of first antenna
It 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
Towards the other end of the first noumenon, described two coupling slots 11 are set in parallel in the first noumenon, each coupling slot 11 described
Both sides are equipped with jagged serrated slot 12 up and down；Described second antenna 2 includes one second body, the length of described the first noumenon
Degree is more than the second body, and one end of described second body is provided with the second gain bar 23, and the second gain bar 23 is away from the second antenna
One end is provided with the second gain antenna 24 of an arc, also includes two and coordinates located at the second body other end and coupling slot 11
Coupling bar 21, described two coupling bars 21 be arranged in parallel, described each coupling bar 21 both sides up and down be equipped with and serrated slot
The jagged serrate projections 22 of 12 cooperations, during cooperation, described serrate projections 22 are located in serrated slot 12；Described in the present embodiment
A kind of rfid label antenna being provided with increasing frequency breach, also includes t font adjusting rod 3, described second is provided with an opening in vivo
Towards the regulation recess 25 of the first noumenon, the horizontal segment of described t font adjusting rod 3 is located at and adjusts in recess 25；The present embodiment institute
A kind of rfid label antenna being provided with increasing frequency breach stated, if the distance on the interior base of the free end of coupling bar 21 and coupling slot 11
For l, if the free end of horizontal segment of t font adjusting rod 3 is m, described l=m* with the horizontal range on the interior base adjusting recess 25
3.75.
This programme achieves by features described above that reading distance is long, and its reading distance is up to 11-13m after tested.Commonly
The reading distance of rfid label antenna is respectively less than 10m.In addition, it is stretchable；I.e. adjustable length, it can be used for width basic
Fixed, but on the packaging kit of indefinite length, have great use value, it is attached to realize note in Different Package, in addition, in theory
Can increase without limitation.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 sky being provided with increasing frequency breach described in the present embodiment
Line, 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, enter one
Step improves gain performance, and reduces return loss, increases radiation omni-directional, and optimum results are preferable.Described in the present embodiment one
Plant and be provided with the rfid label antenna increasing frequency breach, one end of described second body is arcwall face, and radian and the second gain antenna
24 radian is identical.Radian is identical can be reduced standing wave between two antennas and is formed, and reduce wave interference, reduce standing-wave ratio.This reality
Apply described in example a kind of be provided with the rfid label antenna increasing frequency breach, described first gain antenna 14 and the second gain antenna 24
Radian is identical, 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 increasing frequency breach described in the present embodiment, the side of described first gain antenna 14
It is additionally provided with the 3rd gain bar 15, described 3rd gain bar 15 is provided with the 3rd gain antenna 16 away from one end of first antenna；This reality
Apply a kind of rfid label antenna, the radian of described 3rd gain bar 15 and the first gain bar 13 being provided with increasing frequency breach described in example
Radian size identical；In the same manner, it is arranged such, further increases gain performance, and reduce return loss, increase radiation omnidirectional
Property, optimum results are preferable.
A kind of rfid label antenna being provided with increasing frequency breach described in the present embodiment, the height of described the first noumenon is being less than
10cm.A kind of rfid label antenna being provided with increasing frequency breach described in the present embodiment, described first antenna 1 is provided with strip
Isolation channel 17, described isolation channel 17 is located between two coupling slots 11, and a kind of being provided with described in the present embodiment increases frequency breach
Rfid label antenna, at two jiaos of the one side of first antenna 1 and first antenna 1 was near second day for described second antenna 2
The Liang Jiaochu of the one side of line 2 is provided with increasing frequency breach 18.Increasing frequency breach 18 can increase isolation, reduce standing wave and formed so that standing wave
Than close to 1.The antenna of this programme also has preferable performance in terms of omni-directional, as described in Figure 8, its performance in terms of omni-directional
Excellent, there are 360 degree of no equidistant omni-directional in dead angle.As shown in fig. 7, its return loss performance projects, especially return in 925mhz
Ripple loss minima reaches -65db, is held in below -10db in the return loss of whole high band, water is average more than other
Similar antenna level.
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,
Reach conjugate impedance match with the impedance 11+143j of chip monza4 dura.Label can reach optimal effectiveness in 925mhz.
The above is only a preferred embodiment of the present invention, therefore the structure described in all scopes according to present patent application
Make, equivalence changes that feature and principle are done or modification, be included in the protection domain of present patent application.
Claims (4)
1. a kind of be provided with increase frequency breach rfid label antenna 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 second antenna (2) and first antenna (1) are provided with increasing frequency breach (18)；
First antenna (1) includes strip the first noumenon, and one end of described the first noumenon is provided with the first gain bar (13), described
First gain bar (13) is provided with first gain antenna (14) of an arc away from one end of first antenna, and 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)
It is set in parallel in the first noumenon, the both sides up and down of described each coupling slot (11) are equipped with jagged serrated slot (12)；Institute
State the second antenna (2) and include one second body, the length of described the first noumenon is more than the second body, the one of described second body
End is provided with the second gain bar (23), and the second gain bar (23) is provided with the second gain antenna of an arc away from one end of the second antenna
(24), also include two and couple bar (21), described two couplings located at what the second body other end and coupling slot (11) coordinated
Close bar (21) be arranged in parallel, described each coupling bar (21) both sides up and down be equipped with jagged with what serrated slot (12) coordinated
Serrate projections (22), 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 towards the first noumenon for the opening in vivo
(25), 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 level of t font adjusting rod (3)
The free end of section 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
For 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
Identical with the radian of the second gain antenna (24).
2. according to claim 1 a kind of be provided with increase frequency breach rfid label antenna it is characterised in that: described first increasing
Beneficial antenna (14) is identical with the radian of the second gain antenna (24), is 60 ° -80 °.
3. according to claim 1 a kind of be provided with increase frequency breach rfid label antenna it is characterised in that: described first increasing
The side of beneficial antenna (14) is additionally provided with the 3rd gain bar (15), and described 3rd gain bar (15) is provided with away from one end of first antenna
3rd gain antenna (16).
4. according to claim 1 a kind of be provided with increase frequency breach rfid label antenna it is characterised in that: described first
The height of body is less than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315514.0A CN104979617B (en) | 2015-06-11 | 2015-06-11 | RFID (Radio Frequency Identification) label antenna provided with frequency-increasing notch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315514.0A CN104979617B (en) | 2015-06-11 | 2015-06-11 | RFID (Radio Frequency Identification) label antenna provided with frequency-increasing notch |
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| Publication Number | Publication Date |
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| CN104979617A CN104979617A (en) | 2015-10-14 |
| CN104979617B true CN104979617B (en) | 2017-01-25 |
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| CN201510315514.0A Active CN104979617B (en) | 2015-06-11 | 2015-06-11 | RFID (Radio Frequency Identification) label antenna provided with frequency-increasing notch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104866894A (en) * | 2015-06-11 | 2015-08-26 | 江健良 | Coupling capacitance RFID label provided with isolation groove |
| CN104916906A (en) * | 2015-06-11 | 2015-09-16 | 江健良 | Insertion coupling capacitor RFID tag antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308951A (en) * | 2008-07-01 | 2008-11-19 | 华南理工大学 | Wide-band electronic label antenna under multi-application environment |
| CN102610534A (en) * | 2012-01-13 | 2012-07-25 | 华中科技大学 | Stretchable RFID (Radio Frequency Identification) electronic tag and manufacturing method thereof |
| CN204793166U (en) * | 2015-06-11 | 2015-11-18 | 邝嘉豪 | RFID tag antenna with increase breach frequently |
-
2015
- 2015-06-11 CN CN201510315514.0A patent/CN104979617B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308951A (en) * | 2008-07-01 | 2008-11-19 | 华南理工大学 | Wide-band electronic label antenna under multi-application environment |
| CN102610534A (en) * | 2012-01-13 | 2012-07-25 | 华中科技大学 | Stretchable RFID (Radio Frequency Identification) electronic tag and manufacturing method thereof |
| CN204793166U (en) * | 2015-06-11 | 2015-11-18 | 邝嘉豪 | RFID tag antenna with increase breach frequently |
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| CN104979617A (en) | 2015-10-14 |
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