CN105574462A - Radio frequency tag identification and near field communication system based on planar magnetic metamaterial - Google Patents
Radio frequency tag identification and near field communication system based on planar magnetic metamaterial Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 101
- 229910052802 copper Inorganic materials 0.000 claims description 100
- 239000010949 copper Substances 0.000 claims description 100
- 239000000463 material Substances 0.000 claims description 71
- 230000035699 permeability Effects 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000004593 Epoxy Substances 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 238000012546 transfer Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
- G06K7/10178—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention relates to a radio frequency tag identification and near field communication system based on a planar magnetic metamaterial, and the main work frequency is 13.4-13.7 MHz. The system is formed by a signal transmitting coil (1) and a receiving terminal coil (4) connected with a radio frequency tag and near field communication chip, a transmitting terminal magnetic metamaterial (2) is arranged in the signal transmitting coil (1), and a receiving terminal magnetic metamaterial (3) is arranged in the receiving terminal coil (4). Compared with the prior art, according to the radio frequency tag identification and near field communication system, the transmission efficiency of electromagnetic energy and signals is improved by employing two planar magnetic metamaterial parts with the same resonant frequency in the magnetic field resonance with the same frequency range, the system can effectively receive the signals when the position of a receiving terminal has certain dislocation and declination, the magnetic field generated by the magnetic metamaterial in the system is relatively flat and uniform, simultaneous transmission of the signals via multiple receiving terminals is facilitated, and the identification and communication efficiency is improved.
Description
Technical field
The present invention relates to a kind of radio-frequency (RF) tag identification and near field communication system, especially relate to a kind of regulate and control the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic of magnetic field intensity and field distribution and near field communication system.
Background technology
Radio-frequency (RF) identification (RadioFrequencyIdentification, RFID) a kind ofly utilizes radiofrequency signal automatically to identify destination object and obtain the technology of relevant information.RFID application the earliest can be traced back in World War II for distinguishing the recognition system of friendly troop and enemy army's aircraft.At present, RFID has become a study hotspot, and it has efficiently, fast, reliable, non line of sight reads and can work in the advantages such as rugged surroundings, is widely used in data acquisition and commodity identification field.
At present, the mechanism of a lot of RFID is: can produce a high frequency magnetic field near fetch equipment, and receiving end coil, once enter magnetic field, will produce induced voltage in coil, then label and chip are activated, and entrained information by coil transmissions go out be read equipment receive.The transportation card card reader of such as bus, refectory all-in-one campus card card-reading system, and our China second-generation identity card etc. has similar mechanism now.But, induction Signal transmissions also has very disadvantageous factor: first, its transmitting terminal lines of magnetic induction rapidly divergence characterization makes it can only realize the transmission of very in-plant high efficiency energy, once distance increases, energy transmission efficiency between coil can increase to decline rapidly with the speed be inversely proportional to apart from cube along with distance, and now systematically effectiveness also can decline; Secondly, induction Signal transmissions is very sensitive to the dislocation degree between transmitting terminal and receiving end, once there be certain dislocation to exist, will affect the magnetic flux that receiving end receives, and reduces energy transmission efficiency, thus system signal transfer efficiency also can be declined.
Want the transfer efficiency of elevator system signal, a feasible way utilizes the magnetic field near-field coupling in system between transmitting coil and receiving coil to amplify.2007, the scientist from america's MIT proposed a kind of method relying on the magnetic resonance of coil to amplify near field, magnetic field.This method mainly relies on has magnetic resonance between the transmitting terminal coil of identical resonance frequency and receiving end coil to realize the energy exchange between two ends.Due to the existence of electromagnetic resonance, a large amount of electromagnetic energies is assembled at two ends, thus makes magnetic field, near field extend farther, to realize middle distance Energy Transfer efficiently.But near field, magnetic resonance magnetic field is amplified also its shortcoming, first, its resonance coil volume is comparatively large, is unfavorable for practical application; Secondly, the dislocation displacement that it exists transmitting terminal and receiving end is also very responsive, understands extreme influence efficiency, reason and induction basically identical before, is so also unfavorable for realizing multiple goal Energy Transfer on a large scale.The difficult problem that current wireless energy transfer runs into is that transmission range is near, and efficiency is low, and directivity is poor, and this is technical matters urgently to be resolved hurrily.
Chinese patent CN104362767A discloses the wireless charging plane of magnetic field intensity and field distribution regulating effect, by energy emissive source and be arranged on the U.S. special material of transmitting terminal magnetic wherein, energy acceptance source and the U.S. special material of receiving end magnetic be arranged on wherein forms, the U.S. special material of transmitting terminal magnetic and the U.S. special material of receiving end magnetic carry out wireless energy transfer because magnetic resonance evanscent field line intercouples, and have maximum equivalent magnetic permeability real part at system operating frequency place.But the range of application of this patent and function different.This patent is mainly used in wireless charging field, and transmitting terminal and receiving end need to load the special material of U.S. of the same area, to improve wireless energy transmission efficiency; This patent is mainly used in radio-frequency (RF) tag identification and near-field communication field, and mainly for improving effectiveness, can have the function of wireless charging concurrently, but this function being selectable, is not fundamental purpose.And this patent can in the U.S. reducing receiving end special material area under the not significantly reduced prerequisite of guarantee effectiveness, for being operated in compact radio frequency tag recognition and the near-field communication technology of 13.4-13.7MHz.
Summary of the invention
Object of the present invention is exactly provide a kind of the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic and the near field communication system with the ability strengthening signal capabilities and transfer efficiency to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
Based on radio-frequency (RF) tag identification and the near field communication system of the U.S. special material of plane magnetic, for being operated in compact radio frequency tag recognition and the near-field communication technology of 13.4-13.7MHz, be made up of the receiving end coil of signal transmitting coil and connection radio-frequency (RF) tag and near field communications chip
Be provided with the U.S. special material of transmitting terminal magnetic in described signal transmitting coil, in described receiving end coil, be provided with the U.S. special material of receiving end magnetic.
The U.S. special material of described transmitting terminal magnetic is made up of first medium plate, the transmitting terminal first metallic copper spiral rings being etched in first medium plate upper and lower surface and transmitting terminal second metallic copper spiral rings, the first described metallic copper spiral rings is parallel to each other with the relative first medium plate of transmitting terminal second metallic copper spiral rings, directed or uniform magnetic field near field distribution can be provided, in order to strengthen signal and energy transmission efficiency, and improve the tolerance to load situation skew.
Described transmitting terminal first metallic copper spiral rings and transmitting terminal second metallic copper spiral rings, their number (as 1-16), shape (square or circular) can carry out designing and expanding according to actual needs.
Described first medium plate is dielectric-slab conventional in engineering, as FR-4 epoxy glass fiber plate.
Described metallic copper spiral rings can need according to practical application and selected dielectric-slab characteristic (as thickness and specific inductive capacity) designs, its copper lines is made to be coiled into some circles (as 6-10 circle) spiral rings, to realize there is maximum magnetic permeability near 13.56MHz frequency.
The U.S. special material of described receiving end magnetic is arranged on the receiving end first metallic copper spiral rings of second medium plate upper and lower surface by second medium plate and receiving end second metallic copper spiral rings forms, and receiving end first metallic copper spiral rings is parallel to each other with the relative second medium plate of receiving end second metallic copper spiral rings.Can simultaneously Received signal strength and electromagnetic energy, and improve its efficiency.
Described second medium plate is dielectric-slab conventional in engineering, as FR-4 epoxy glass fiber plate.
Described receiving end first metallic copper spiral rings is identical with receiving end second metallic copper spiral rings, and their number (as 1-4), shape (square or circular) can carry out designing and expanding according to actual needs.
Described metallic copper spiral rings can need according to practical application and selected second medium plate characteristic designs, and is coiled into some circle spiral rings, to realize there is maximum magnetic permeability near 13.56MHz frequency with copper lines.
The U.S. special material of transmitting terminal magnetic and the U.S. special material available printed circuit board technology of receiving end magnetic are processed into.
As a specific embodiment, the length of side of signal transmitting coil is 150mm, the upper and lower surface stamp of dielectric-slab has the square magnetic resonance line coil array of 9 square metal copper spiral rings formations, the length of side of receiving end coil is 50mm, and the upper and lower surface of dielectric-slab is stamped a square metal copper spiral rings.The thickness of each dielectric-slab is 1mm; The thickness of the metallic copper spiral rings of transmitting terminal and receiving end is 0.035mm, and the foursquare length of side that unit outmost turns copper strips surrounds is 48mm, and copper strips width is 0.3mm, and copper strips interval is 0.3mm, and metallic copper spiral rings is 8.5 circles.
Compared with prior art, the present invention has the following advantages:
(1) utilize near field, the magnetic field enhancement effect of the U.S. special material of magnetic effectively can improve energy between radio-frequency (RF) tag and near field communication system transmitting terminal receiving end and effectiveness, improve the signal identification rate of single and multiple radio-frequency (RF) tag.
(2) the U.S. special material of loaded planar in transmitting terminal coil, except enhancing emission of magnetic field efficiency, also uniform magnetic field is provided to distribute by design, thus the tolerance making reception label contraposition offset move is strengthened greatly, meanwhile, is conducive to improving many tag recognition efficiency, this is because, uniform Distribution of Magnetic Field, when the reception label offset in place of small size can be made to move, can Received signal strength in higher efficiency; And little owing to receiving label area, on large-area transmitting coil, many tag recognition can be supported simultaneously.
(3) load mode of U.S. special material is flexible, when receiving end load and transmitting terminal does not load, receiving end do not load and transmitting terminal loads and loads at receiving end transmitting terminal simultaneously, all there is the ability strengthening signal capabilities and transfer efficiency.
(4) the dark sub-wavelength characteristic of the U.S. special material of magnetic is conducive to the miniaturization of radio-frequency (RF) tag identification and near field communication system.
(5) this system can make the energy transmission efficiency between two coils promote, be conducive to the power requirement reducing radio-frequency (RF) tag identification and near field communication system, due to adding of the U.S. special material of magnetic, along with the lifting of transfer efficiency, the identification of same radio frequency label and the function of near-field communication can be realized with less power.
(6) the present invention adopts ripe planar printed circuit board technology, and technique is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention in embodiment 1;
Fig. 2 is the structural representation of the U.S. special material of transmitting terminal and receiving end magnetic;
Fig. 3 is the structure for amplifying schematic diagram of square-shaped metal copper cash ring and substrate;
Fig. 4 is that the U.S. special material equivalent permeability real part of magnetic and imaginary part are with frequency change graph of a relation;
When Fig. 5 is material special with or without U.S., radio-frequency (RF) tag identification and the effectiveness of near field communication system under 2cm transmission range are with frequency change graph of a relation.
In figure, 1 is signal transmitting coil, 2 is the U.S. special material of transmitting terminal magnetic, and 3 is the U.S. special material of receiving end magnetic, and 4 is receiving end coil, 5 is first medium plate, 6 is transmitting terminal first metallic copper spiral rings, and 7 is transmitting terminal second metallic copper spiral rings, and 8 is second medium plate, 9 is receiving end first metallic copper spiral rings, and 10 is receiving end second metallic copper spiral rings.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
Regulate and control a radio-frequency (RF) tag recognition system for magnetic field intensity and field distribution based on the U.S. special material of magnetic, as Figure 1-3, primarily of signal transmitting coil 1, the U.S. special material 2 of transmitting terminal magnetic, the U.S. special material 3 of receiving end magnetic, receiving end coil 4 forms its structure.The U.S. special material 2 of transmitting terminal magnetic lays respectively at signal transmitting coil 1 and receiving end coil 4 center with the U.S. special material 3 of receiving end magnetic, and the U.S. special material 2 of transmitting terminal magnetic and the U.S. special material 3 of receiving end magnetic carry out signal transmission due to magnetic resonance; The U.S. special material 2 of transmitting terminal magnetic and the U.S. special material 3 of receiving end magnetic have maximum equivalent magnetic permeability real part at system operating frequency place.Signal transmitting coil 1 and receiving end coil 4 are disresonance square-shaped metal copper ring.
The U.S. special material 2 of transmitting terminal magnetic is made up of first medium plate 5, transmitting terminal first metallic copper spiral rings 6 and transmitting terminal second metallic copper spiral rings 7.Transmitting terminal first metallic copper spiral rings 6 is arranged in first medium plate 5 front, and transmitting terminal second metallic copper spiral rings 7 is arranged in first medium plate bottom surface 5; Transmitting terminal first metallic copper spiral rings 6 is placed about first medium plate 5 antiparallel symmetry with transmitting terminal second metallic copper spiral rings 7.
The U.S. special material 3 of receiving end magnetic is made up of second medium plate 8, receiving end first metallic copper spiral rings 9 and receiving end second metallic copper spiral rings 10.Receiving end first metallic copper spiral rings 9 is arranged in second medium plate 8 front, and receiving end second metallic copper spiral rings 10 is arranged in second medium plate 8 bottom surface; Receiving end first metallic copper helical circular row 9 is placed about second medium plate 8 antiparallel symmetry with receiving end second metallic copper spiral rings 10.
First medium plate 5 and second medium plate 8 are the dielectric-slab that FR-4 epoxy glass fiber plate is made, and specific inductive capacity is 4.3, and thickness is 1mm; Transmitting terminal first metallic copper spiral rings 6 and the second metallic copper spiral rings 7 are 0.035mm with the thickness of receiving end first metallic copper spiral rings 9 and the second metallic copper spiral rings 10, the unit cycle is 50mm, unit outmost turns copper strips length is 48mm, copper strips width is 0.3mm, copper strips interval is 0.3mm, and metallic copper spiral rings is 8.5 circles.
Fig. 4 be the U.S. special material equivalent permeability real part of magnetic with imaginary part with frequency change graph of a relation, as shown in the figure, the equivalent permeability real part of the special material of magnetic U.S. reaches maximal value near 13.56MHz.Adopting the present invention to test the system that obtains in 2cm transmission range situation, transfer efficiency is as shown in Figure 5, test frequency scope is 11MHz ~ 17MHz, after adding the U.S. special material of magnetic, wireless energy transfer system efficiency is greatly improved, wherein most effective frequency frequency corresponding to the U.S. special material equivalent permeability real part maximum point of magnetic.
Embodiment 2
Based on radio-frequency (RF) tag identification and the near field communication system of the U.S. special material of plane magnetic, for being operated in compact radio frequency tag recognition and the near-field communication technology of 13.56MHz, be made up of the receiving end coil of signal transmitting coil and connection radio-frequency (RF) tag and near field communications chip.
Wherein, in signal transmitting coil, be provided with the U.S. special material of transmitting terminal magnetic, in receiving end coil, be provided with the U.S. special material of receiving end magnetic.The U.S. special material of transmitting terminal magnetic and the U.S. special material available printed circuit board technology of receiving end magnetic are processed into.The U.S. special material of transmitting terminal magnetic is made up of first medium plate, the transmitting terminal first metallic copper spiral rings being etched in first medium plate upper and lower surface and transmitting terminal second metallic copper spiral rings, first metallic copper spiral rings is parallel to each other with the relative first medium plate of transmitting terminal second metallic copper spiral rings, directed or uniform magnetic field near field distribution can be provided, in order to strengthen signal and energy transmission efficiency, and improve the tolerance to load situation skew.Transmitting terminal first metallic copper spiral rings and transmitting terminal second metallic copper spiral rings, their number, shape can carry out designing and expanding according to actual needs, and in the present embodiment, metallic copper spiral rings is provided with 1, and shape is circular.First medium plate is dielectric-slab conventional in engineering, such as, can adopt FR-4 epoxy glass fiber plate.
Metallic copper spiral rings can need according to practical application and selected dielectric-slab characteristic (as thickness and specific inductive capacity) designs, and makes its copper lines be coiled into the spiral rings of 6 circles, to realize there is maximum magnetic permeability near 13.56MHz frequency.
The U.S. special material of receiving end magnetic is arranged on the receiving end first metallic copper spiral rings of second medium plate upper and lower surface by second medium plate and receiving end second metallic copper spiral rings forms, and receiving end first metallic copper spiral rings is parallel to each other with the relative second medium plate of receiving end second metallic copper spiral rings.Can simultaneously Received signal strength and electromagnetic energy, and improve its efficiency.Second medium plate is dielectric-slab conventional in engineering, such as, can adopt FR-4 epoxy glass fiber plate.Receiving end first metallic copper spiral rings is identical with receiving end second metallic copper spiral rings, and their number, shape can carry out designing and expanding according to actual needs.In the present embodiment, metallic copper spiral rings is provided with 1, and shape is circular.
Metallic copper spiral rings can need according to practical application and selected second medium plate characteristic designs, and is coiled into 6 circle spiral rings, to realize there is maximum magnetic permeability near 13.56MHz frequency with copper lines.
Embodiment 3
Based on radio-frequency (RF) tag identification and the near field communication system of the U.S. special material of plane magnetic, for being operated in compact radio frequency tag recognition and the near-field communication technology of 13.56MHz, be made up of the receiving end coil of signal transmitting coil and connection radio-frequency (RF) tag and near field communications chip.
Wherein, in signal transmitting coil, be provided with the U.S. special material of transmitting terminal magnetic, in receiving end coil, be provided with the U.S. special material of receiving end magnetic.The U.S. special material of transmitting terminal magnetic and the U.S. special material available printed circuit board technology of receiving end magnetic are processed into.The U.S. special material of transmitting terminal magnetic is made up of first medium plate, the transmitting terminal first metallic copper spiral rings being etched in first medium plate upper and lower surface and transmitting terminal second metallic copper spiral rings, first metallic copper spiral rings is parallel to each other with the relative first medium plate of transmitting terminal second metallic copper spiral rings, directed or uniform magnetic field near field distribution can be provided, in order to strengthen signal and energy transmission efficiency, and improve the tolerance to load situation skew.Transmitting terminal first metallic copper spiral rings and transmitting terminal second metallic copper spiral rings, their number, shape can carry out designing and expanding according to actual needs, and in the present embodiment, metallic copper spiral rings is provided with 16, and shape is square.First medium plate is dielectric-slab conventional in engineering, such as, can adopt FR-4 epoxy glass fiber plate.
Metallic copper spiral rings can need according to practical application and selected dielectric-slab characteristic (as thickness and specific inductive capacity) designs, and makes its copper lines be coiled into the spiral rings of 10 circles, to realize there is maximum magnetic permeability near 13.56MHz frequency.
The U.S. special material of receiving end magnetic is arranged on the receiving end first metallic copper spiral rings of second medium plate upper and lower surface by second medium plate and receiving end second metallic copper spiral rings forms, and receiving end first metallic copper spiral rings is parallel to each other with the relative second medium plate of receiving end second metallic copper spiral rings.Can simultaneously Received signal strength and electromagnetic energy, and improve its efficiency.Second medium plate is dielectric-slab conventional in engineering, such as, can adopt FR-4 epoxy glass fiber plate.Receiving end first metallic copper spiral rings is identical with receiving end second metallic copper spiral rings, and their number, shape can carry out designing and expanding according to actual needs.In the present embodiment, metallic copper spiral rings is provided with 16, and shape is square.
Metallic copper spiral rings can need according to practical application and selected second medium plate characteristic designs, and is coiled into 10 circle spiral rings, to realize there is maximum magnetic permeability near 13.56MHz frequency with copper lines.
Claims (10)
1. based on radio-frequency (RF) tag identification and the near field communication system of the U.S. special material of plane magnetic, it is characterized in that, frequency of operation is at 13.4-13.7MHz, and this communication system is made up of the receiving end coil (4) of signal transmitting coil (1) and connection radio-frequency (RF) tag and near field communications chip
Be provided with the U.S. special material (2) of transmitting terminal magnetic in described signal transmitting coil (1), in described receiving end coil (4), be provided with the U.S. special material (3) of receiving end magnetic.
2. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 1 and near field communication system, it is characterized in that, the U.S. special material (2) of described transmitting terminal magnetic is made up of first medium plate (5), transmitting terminal first metallic copper spiral rings (6) being etched in first medium plate (5) upper and lower surface and transmitting terminal second metallic copper spiral rings (7), and described the first metallic copper spiral rings (6) first medium plate (5) relative to transmitting terminal second metallic copper spiral rings (7) is parallel to each other.
3. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 2 and near field communication system, it is characterized in that, described transmitting terminal first metallic copper spiral rings (6) is identical with transmitting terminal second metallic copper spiral rings (7).
4. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 2 and near field communication system, it is characterized in that, described first medium plate (5) is dielectric-slab conventional in engineering, comprises FR-4 epoxy glass fiber plate.
5. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 3 and near field communication system, it is characterized in that, described metallic copper spiral rings can need according to practical application and selected first medium plate (5) characteristic designs, some circle spiral rings are coiled into, to realize there is maximum magnetic permeability near 13.56MHz frequency with copper lines.
6. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 1 and near field communication system, it is characterized in that, the U.S. special material (3) of described receiving end magnetic is arranged on receiving end first metallic copper spiral rings (9) of second medium plate (8) upper and lower surface by second medium plate (8) and receiving end second metallic copper spiral rings (10) forms, and receiving end first metallic copper spiral rings (9) second medium plate (8) relative to receiving end second metallic copper spiral rings (10) is parallel to each other.
7. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 6 and near field communication system, it is characterized in that, described receiving end first metallic copper spiral rings (9) is identical with receiving end second metallic copper spiral rings (10).
8. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 6 and near field communication system, it is characterized in that, described second medium plate (8) is dielectric-slab conventional in engineering, comprises FR-4 epoxy glass fiber plate.
9. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 6 and near field communication system, it is characterized in that, described metallic copper spiral rings can need according to practical application and selected second medium plate (8) characteristic designs, some circle spiral rings are coiled into, to realize there is maximum magnetic permeability near 13.56MHz frequency with copper lines.
10. the radio-frequency (RF) tag identification based on the U.S. special material of plane magnetic according to claim 1 and near field communication system, is characterized in that, the U.S. special material of transmitting terminal magnetic and the U.S. special material of receiving end magnetic adopt printed-board technology to be processed into.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510992958.8A CN105574462A (en) | 2015-12-25 | 2015-12-25 | Radio frequency tag identification and near field communication system based on planar magnetic metamaterial |
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| CN201510992958.8A CN105574462A (en) | 2015-12-25 | 2015-12-25 | Radio frequency tag identification and near field communication system based on planar magnetic metamaterial |
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| CN105574462A true CN105574462A (en) | 2016-05-11 |
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| CN201510992958.8A Pending CN105574462A (en) | 2015-12-25 | 2015-12-25 | Radio frequency tag identification and near field communication system based on planar magnetic metamaterial |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281266A (en) * | 2018-01-18 | 2018-07-13 | 同济大学 | The U.S. special material cell structure of low-frequency magnetic and combinations thereof device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110266879A1 (en) * | 2010-04-30 | 2011-11-03 | Soongsil University Research Consortium Techno-Park | Apparatus for transmitting and receiving wireless energy using meta-material structures having zero refractive index |
| CN102780070A (en) * | 2011-05-09 | 2012-11-14 | 国民技术股份有限公司 | Multiple-frequency-band antenna device for near field communication and application system thereof |
| CN103296766A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Wireless energy transmission system |
| CN103414257A (en) * | 2013-07-09 | 2013-11-27 | 同济大学 | Non-radioactive wireless electric energy transmission system based on electromagnetic tunneling effect in Meite material |
| CN104362767A (en) * | 2014-10-16 | 2015-02-18 | 同济大学 | Wireless charging plane with magnetic field intensity and field distribution regulating function |
-
2015
- 2015-12-25 CN CN201510992958.8A patent/CN105574462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110266879A1 (en) * | 2010-04-30 | 2011-11-03 | Soongsil University Research Consortium Techno-Park | Apparatus for transmitting and receiving wireless energy using meta-material structures having zero refractive index |
| CN102780070A (en) * | 2011-05-09 | 2012-11-14 | 国民技术股份有限公司 | Multiple-frequency-band antenna device for near field communication and application system thereof |
| CN103296766A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Wireless energy transmission system |
| CN103414257A (en) * | 2013-07-09 | 2013-11-27 | 同济大学 | Non-radioactive wireless electric energy transmission system based on electromagnetic tunneling effect in Meite material |
| CN104362767A (en) * | 2014-10-16 | 2015-02-18 | 同济大学 | Wireless charging plane with magnetic field intensity and field distribution regulating function |
Non-Patent Citations (1)
| Title |
|---|
| TUANHUI FENG等: "Electromagnetic tunneling in a sandwich structure containing single negative media", 《PHYSICAL REVIEW E》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281266A (en) * | 2018-01-18 | 2018-07-13 | 同济大学 | The U.S. special material cell structure of low-frequency magnetic and combinations thereof device |
| CN108281266B (en) * | 2018-01-18 | 2021-03-16 | 同济大学 | Low-frequency magnetic Meite material unit structure and combination device thereof |
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