CN109888455A - A kind of novel efficient broadband washer wrinkle fabric label antenna - Google Patents
A kind of novel efficient broadband washer wrinkle fabric label antenna Download PDFInfo
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- CN109888455A CN109888455A CN201910121530.4A CN201910121530A CN109888455A CN 109888455 A CN109888455 A CN 109888455A CN 201910121530 A CN201910121530 A CN 201910121530A CN 109888455 A CN109888455 A CN 109888455A
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- label
- antenna
- label antenna
- resonant ring
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Abstract
The invention discloses a kind of novel efficient broadband washer wrinkle fabric label antennas, more particularly to antenna technical field, substrate and coating including label antenna and label antenna, the label antenna is set between substrate and coating, the label antenna includes external label antenna, first resonant ring and the encapsulated tags antenna being set in the first resonant ring, the external label antenna is made of the second resonant ring with the radiation arm for being set to the bending of the second resonant ring two sides, the radiation arm end is connected with terminal, the encapsulated tags antenna includes PCB substrate, label chip, conductive loop and coaxial cable.The present invention uses open loop cavity resonator structure, the structure of open loop resonant cavity substantially increases the coefficient of coup, improve the efficiency of label antenna, the real part increase of label antenna impedance simultaneously enables the impedance of label antenna to realize conjugate impedance match with the impedance of label chip, it realizes broad band performance, ensures read-write safety.
Description
Technical field
The present invention relates to antenna technical fields, it is more particularly related to a kind of novel efficient broadband washer wrinkle fabric
Label antenna.
Background technique
The arrival of the internet of things era accelerates the development of identification technology, in current various identification technologies, RFID identification technology
It is most fast, most effective identification technology.Wherein, the performance of label antenna plays critical effect to RFID identification ability.
Washer wrinkle fabric label belongs to speciality label, including label antenna, encapsulated tags chip, the substrate and covering of label antenna
Layer.Unlike common label, the conductive loop and chip of washer wrinkle fabric label are placed in inside the pcb of encapsulation, and outside it
Antenna there is no directly contacting, but energy radiate by the way of coupling.External label antenna uses multiply
The structure of conductive fiber stranded wire；Antenna substrate uses chemical & blended fabric or rubber；The coating of antenna uses chemical & blended fabric or rubber
Glue flexible material or film flexible material.Label antenna and label chip are placed between antenna substrate and coating.Therefore it can
Guarantee that antenna is resistant to bending, it is water-fastness and can ensure that label MRI safe.
For current washer wrinkle fabric label, due to by the way of coupling, causing to be lost larger, coupling between chip and antenna
Collaboration number is small, to influence the gain decline of antenna.Label antenna and chip chamber are matched with biggish difficulty, at present label day
The frequency band of line is relatively narrow, influences the stability of labeling task.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of novel efficient broadband washer wrinkle fabric
Label antenna, by using label antenna and label chip non-direct contact mode, label chip is placed in inside PCB substrate, is prevented
Only chip is impaired so that tag defeat, what is be connected with label chip is that an annular matches antenna in washing process, passes through outside
Radiating antenna send energy and information are counter to reader, using open loop cavity resonator structure, the structure of open loop resonant cavity mentions significantly
The high coefficient of coup, improves the efficiency of label antenna, while the real part of label antenna impedance increases the impedance so that label antenna
It can realize broad band performance to realize conjugate impedance match with the impedance of label chip, ensure read-write safety, open loop resonant cavity and idol
The extremely connected form of son, so that the relatively single dipole of label antenna has better omni-directional radianting capacity.
To achieve the above object, the invention provides the following technical scheme: a kind of novel efficient broadband washer wrinkle fabric label day
Line, substrate and coating including label antenna and label antenna, the label antenna are set between substrate and coating,
The label antenna includes external label antenna, the first resonant ring and the encapsulated tags antenna being set in the first resonant ring, institute
It states external label antenna and is made of the second resonant ring with the radiation arm for being set to the bending of the second resonant ring two sides, the radiation arm end
Portion is connected with terminal, and the encapsulated tags antenna includes PCB substrate, label chip, conductive loop and coaxial cable, the label
Chip is set in conductive loop and is encapsulated in the inside of PCB substrate.
In a preferred embodiment, first resonant ring is connect with radiation arm, and the encapsulated tags antenna is set
It is placed in the middle of the first resonant ring.
In a preferred embodiment, the conductive loop is set as the double-deck closing structure, and the label chip is set
It is placed in label antenna middle, is connected between two layers of conductive loop by coaxial cable.
In a preferred embodiment, the conductive loop is handled using copper-plating technique, the thickness of the PCB substrate
For 1 ± 0.1mm.
In a preferred embodiment, it is humorous that the first open loop is equipped between first resonant ring and encapsulated tags antenna
Shake chamber, and the second open loop resonant cavity is equipped between second resonant ring and the first resonant ring.
In a preferred embodiment, the label chip is mutual by the first open loop resonant cavity and external label antenna
Coupling connects, and dicyclo resonant cavity or monocycle resonant cavity can be used in the label antenna.
In a preferred embodiment, the label antenna is the conductive fiber stranded wire of 0.5 ± 0.1mm of width,
The radiation arm connects terminal in such a way that capacitive loads.
Technical effect and advantage of the invention:
1, the present invention is placed in inside PCB substrate, is prevented using label antenna and label chip non-direct contact mode, label chip
Chip is impaired so that tag defeat, what is be connected with label chip is an annular matching antenna in washing process, passes through outside
Radiating antenna is sent energy and information are counter to reader；
2, the present invention uses open loop cavity resonator structure, and the structure of open loop resonant cavity substantially increases the coefficient of coup, improves label day
The efficiency of line, while the real part increase of label antenna impedance enables the impedance of label antenna to realize with the impedance of label chip
Conjugate impedance match realizes broad band performance, ensures read-write safety；
3, the form that the present invention is connected using open loop resonant cavity with dipole, so that the relatively single dipole of label antenna has more preferably
Omni-directional radianting capacity.
4, the present invention uses the form of terminal loads, enables label antenna to obtain optimum gain and Optimum Matching is imitated
Fruit.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is label chip schematic diagram of internal structure of the invention.
Fig. 3 is S11 result figure of the invention.
Fig. 4 is gain pattern (915MHz) of the invention.
Appended drawing reference are as follows: 1 label antenna, 2 first resonant rings, 3 encapsulated tags antennas, 4 second resonant rings, 5 radiation arms, 6
Terminal, 7 PCB circuit boards, 8 label chips, 9 conductive loops, 10 coaxial cables.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A kind of novel efficient broadband washer wrinkle fabric label antenna as shown in Figs 1-4, including label antenna 1 and label antenna 1
Substrate and coating, the label antenna 1 be set between substrate and coating, the label antenna 1 include external label
Antenna, the first resonant ring 2 and the encapsulated tags antenna 3 being set in the first resonant ring 2, the external label antenna are humorous by second
Vibration ring 4 and the radiation arm 5 for being set to the bending of 4 two sides of the second resonant ring form, and 5 end of radiation arm is connected with terminal 6, described
Encapsulated tags antenna 3 includes PCB substrate 7, label chip 8, conductive loop 9 and coaxial cable 10, and the label chip 8 is set to
Conductive loop 9 is interior and is encapsulated in the inside of PCB substrate 7.
First resonant ring 2 is connect with radiation arm 5, and the encapsulated tags antenna 3 is set to the center of the first resonant ring 2
Between；
The conductive loop 9 is set as the double-deck closing structure, is connected between two layers of conductive loop 9 by coaxial cable 10,
The label chip 8 is set to 1 middle of label antenna, obtains biggish reactance with this and realizes impedance matching, with label chip 8
Connected conductive loop 9 is increased effective current path, can be reduced 7 size of PCB substrate using double-deck structure；
The conductive loop 9 is handled using copper-plating technique, the PCB substrate 7 with a thickness of 1mm, first resonant ring 2 and envelope
It fills and is equipped with the first open loop resonant cavity between label antenna 3, second is equipped between second resonant ring 4 and the first resonant ring 2 and is opened
Annular resonant cavity, the label chip 8 are connect by the first open loop resonant cavity with external label mutual coupling of antenna；
Dicyclo resonant cavity or monocycle resonant cavity can be used in the label antenna 1, and dicyclo resonant cavity has subtle compared with monocycle resonant cavity
Gain raising and impedance matching effect；
The label antenna 1 is the conductive fiber stranded wire of width 0.5mm, and the width for widening two sides most external radiation arm 5 obtains
High-gain, the two neighboring width bent between radiation arm 5 of appropriate adjustment can obtain optimum gain and preferable matching effect；
The radiation arm 5 connects terminal 6 in such a way that capacitive loads, i.e. the number of share of stock of the conductive fiber stranded wire of terminal 6 increases,
Gain can be improved and realize preferable impedance matching.
Further, in the above-mentioned technical solutions, the effect for using split coil is to improve the real part of impedance to realize mark
Sign antenna 1 can preferably with 8 impedance conjugate impedance match of label chip, in broadband (885MHz-957MHz) S11-3dB with
Under, ensure that job security, open loop structure are capable of increasing the coefficient of coup, improve by a relatively large margin label antenna 1 under circumstances
The gain of label antenna 1.
Embodiment 2
In this embodiment, a kind of new double coupling open loop structures are proposed, as shown in Figs. 1-2, which is a magnetic dipole
Son can be regarded as electromagnetic dipole in conjunction with the electric dipole of two sides；
When second open loop resonant cavity of the electric field across the second resonant ring 4 and the first resonant ring 2, excitation the second opening resonance
Chamber generates resonance effect, adjusts the size of the second open loop resonant cavity to control resonance frequency, the first resonant ring 2 and encapsulated tags day
The first open loop resonant cavity between line 3 has the function of finely tuning resonance frequency and improves 1 gain of label antenna；
Using open loop cavity resonator structure, the structure of open loop resonant cavity substantially increases the coefficient of coup, improves the effect of label antenna 1
Rate, while the real part increase of 1 impedance of label antenna enables the impedance of label antenna 1 to realize altogether with the impedance of label chip 8
Yoke matching, realizes broad band performance, ensures read-write safety, the form that open loop resonant cavity is connected with dipole, so that label day
The relatively single dipole of line 1 has better omni-directional radianting capacity.
Embodiment 3
Unlike embodiment 1-2, in the present embodiment, the PCB substrate 7 with a thickness of 0.9mm, the label antenna 1 is
The conductive fiber stranded wire of width 0.4mm, the width for widening two sides most external radiation arm 5 obtain high-gain, and appropriate adjustment is adjacent
Width between two bending radiation arms 5 can obtain optimum gain and preferable matching effect.
Embodiment 4
Unlike embodiment 1-3, in the present embodiment, the PCB substrate 7 with a thickness of 1.1mm, the label antenna 1 is
The conductive fiber stranded wire of width 0.6mm, the width for widening two sides most external radiation arm 5 obtain high-gain, and appropriate adjustment is adjacent
Width between two bending radiation arms 5 can obtain optimum gain and preferable matching effect.
The several points that should finally illustrate are: firstly, in the description of the present application, it should be noted that unless otherwise prescribed and
It limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, can be mechanical connection or electrical connection, be also possible to two
Connection inside element, can be directly connected, and "upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when
The absolute position for being described object changes, then relative positional relationship may change；
Secondly: the present invention discloses in embodiment attached drawing, relates only to the structure being related to the embodiment of the present disclosure, and other structures can
With reference to being commonly designed, under not conflict situations, the same embodiment of the present invention and different embodiments be can be combined with each other；
Last: the foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of novel efficient broadband washer wrinkle fabric label antenna, substrate including label antenna (1) and label antenna (1) and
Coating, it is characterised in that: the label antenna (1) is set between substrate and coating, and the label antenna (1) includes outer
Portion's label antenna, the first resonant ring (2) and the encapsulated tags antenna (3) being set in the first resonant ring (2), the external label
Antenna by the second resonant ring (4) and be set to the second resonant ring (4) two sides bending radiation arm (5) form, the radiation arm (5)
End is connected with terminal (6), the encapsulated tags antenna (3) include PCB substrate (7), label chip (8), conductive loop (9) and
Coaxial cable (10), the label chip (8) are set in conductive loop (9) and are encapsulated in the inside of PCB substrate (7).
2. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 1, it is characterised in that: described first
Resonant ring (2) is connect with radiation arm (5), and the encapsulated tags antenna (3) is set to the middle of the first resonant ring (2).
3. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 1, it is characterised in that: the inductance
Loop (9) is set as the double-deck closing structure, and the label chip (8) is set to label antenna (1) middle, two layers of inductance
It is connected between loop (9) by coaxial cable (10).
4. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 1, it is characterised in that: the inductance
Loop (9) using copper-plating technique handle, the PCB substrate (7) with a thickness of 1 ± 0.1mm.
5. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 1, it is characterised in that: described first
The first open loop resonant cavity, second resonant ring (4) and the first resonance are equipped between resonant ring (2) and encapsulated tags antenna (3)
The second open loop resonant cavity is equipped between ring (2).
6. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 5, it is characterised in that: the label
Chip (8) is connect by the first open loop resonant cavity with external label mutual coupling of antenna, and double-ring resonance can be used in the label antenna (1)
Chamber or monocycle resonant cavity.
7. a kind of novel efficient broadband washer wrinkle fabric label antenna according to claim 1, it is characterised in that: the label
Antenna (1) is the conductive fiber stranded wire of 0.5 ± 0.1mm of width, and the radiation arm (5) connects end in such a way that capacitive loads
It holds (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121530.4A CN109888455A (en) | 2019-02-16 | 2019-02-16 | A kind of novel efficient broadband washer wrinkle fabric label antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121530.4A CN109888455A (en) | 2019-02-16 | 2019-02-16 | A kind of novel efficient broadband washer wrinkle fabric label antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109888455A true CN109888455A (en) | 2019-06-14 |
Family
ID=66928415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910121530.4A Pending CN109888455A (en) | 2019-02-16 | 2019-02-16 | A kind of novel efficient broadband washer wrinkle fabric label antenna |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478018A (en) * | 2020-04-15 | 2020-07-31 | 合肥工业大学 | Radio frequency identification tag antenna applied to dense environment |
| CN111509375A (en) * | 2019-12-18 | 2020-08-07 | 数码服装有限公司 | Textile material based near field communication wireless communication system |
| CN111832686A (en) * | 2020-06-10 | 2020-10-27 | 杭州电子科技大学 | Liquid-resistant wearable UHF RFID tag |
| CN112467354A (en) * | 2019-09-06 | 2021-03-09 | 莫冰 | Tunable ultrahigh frequency RFID (radio frequency identification) tag antenna and impedance tuning method thereof |
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| CN103138044A (en) * | 2011-11-25 | 2013-06-05 | 刘智佳 | Microstrip patch type radio frequency identification (RFID) tag antenna |
| CN103514475A (en) * | 2012-06-24 | 2014-01-15 | 上海祯显电子科技有限公司 | Thick antenna discrete ultrahigh frequency intelligent label |
| CN105140632A (en) * | 2015-07-06 | 2015-12-09 | 中南大学 | Inductively coupled feed bending dipole RFID (radio frequency identification) tag antenna |
| JP6172137B2 (en) * | 2014-12-26 | 2017-08-02 | 株式会社村田製作所 | Antenna device |
| CN107634320A (en) * | 2017-07-14 | 2018-01-26 | 杭州电子科技大学 | A kind of multi-mode of the split ring resonator based on deformation, wide band printed loop antenna |
| CN207250712U (en) * | 2017-08-07 | 2018-04-17 | 杭州思创汇联科技有限公司 | A kind of integrated chip |
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2019
- 2019-02-16 CN CN201910121530.4A patent/CN109888455A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138044A (en) * | 2011-11-25 | 2013-06-05 | 刘智佳 | Microstrip patch type radio frequency identification (RFID) tag antenna |
| CN103514475A (en) * | 2012-06-24 | 2014-01-15 | 上海祯显电子科技有限公司 | Thick antenna discrete ultrahigh frequency intelligent label |
| JP6172137B2 (en) * | 2014-12-26 | 2017-08-02 | 株式会社村田製作所 | Antenna device |
| CN105140632A (en) * | 2015-07-06 | 2015-12-09 | 中南大学 | Inductively coupled feed bending dipole RFID (radio frequency identification) tag antenna |
| CN107634320A (en) * | 2017-07-14 | 2018-01-26 | 杭州电子科技大学 | A kind of multi-mode of the split ring resonator based on deformation, wide band printed loop antenna |
| CN207250712U (en) * | 2017-08-07 | 2018-04-17 | 杭州思创汇联科技有限公司 | A kind of integrated chip |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467354A (en) * | 2019-09-06 | 2021-03-09 | 莫冰 | Tunable ultrahigh frequency RFID (radio frequency identification) tag antenna and impedance tuning method thereof |
| CN112467354B (en) * | 2019-09-06 | 2023-05-02 | 莫冰 | Tunable ultrahigh frequency RFID tag antenna and impedance tuning method thereof |
| CN111509375A (en) * | 2019-12-18 | 2020-08-07 | 数码服装有限公司 | Textile material based near field communication wireless communication system |
| CN111478018A (en) * | 2020-04-15 | 2020-07-31 | 合肥工业大学 | Radio frequency identification tag antenna applied to dense environment |
| CN111832686A (en) * | 2020-06-10 | 2020-10-27 | 杭州电子科技大学 | Liquid-resistant wearable UHF RFID tag |
| CN111832686B (en) * | 2020-06-10 | 2022-02-18 | 杭州电子科技大学 | Liquid-resistant wearable UHF RFID tag |
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Application publication date: 20190614 |