CN100433055C - Radio frequency identification system - Google Patents
Radio frequency identification system Download PDFInfo
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- CN100433055C CN100433055C CNB2005101217204A CN200510121720A CN100433055C CN 100433055 C CN100433055 C CN 100433055C CN B2005101217204 A CNB2005101217204 A CN B2005101217204A CN 200510121720 A CN200510121720 A CN 200510121720A CN 100433055 C CN100433055 C CN 100433055C
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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
- G06K19/07737—Constructional details, e.g. mounting of circuits in the carrier the record carrier consisting of two or more mechanically separable parts
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Abstract
The present invention provides a radio frequency identification system comprising a radio frequency identification symbol, a patch antenna and a reader, in which a reception rate of the radio frequency identification symbol is not deteriorated without being affected by a metal product even if an object to be managed is formed from a metal, and which can be made lightweight and small-sized. In the radio frequency identification system according to the present invention, the reception rate is prevented from being deteriorated using the radio frequency identification symbol into which an electrically insulated spacer having thickness of 3 to 10mm is inserted. A dielectric is constituted using ceramics of which a dielectric constant is 4.0 to 210 and a patch antenna remarkably small-sizing the dielectric is used so as to be lightweight and small-sized. The antenna not only has a function as one part of the long-distance interpretation antenna system which is associated with the electric field and acts in the range determined by the authorities, but also provides suitable properties to all the possible label/antenna allocation direction.
Description
Technical field
The present invention relates to radio frequency identification system, be specifically related to a kind ofly identifying by radio frequency identification, the radio frequency identification system that paster antenna and reader constitute, it is that the radio frequency identification sign of the partition of 3～10mm with electrical insulating property has the effect that acceptance rate is worsened that thickness has been inserted in use, constitute dielectric by use by pottery and make dielectric size paster antenna of miniaturization significantly, have can lightweight/miniature antenna itself effect, a plurality of formation antennas are attached to chip in use and the paster antenna (patch antenna) that constitutes can further improve directive property and efficient, even if under the situation that the management object thing is formed by metal, be not subjected to the influence of metallic article yet, thus the radio frequency identification system (radio frequency identification system) that the acceptance rate variation that can not make radio frequency identification sign simultaneously can also lightweight/miniaturization.
Background technology
RFID (radio frequency identification:RFID) discerns this field automatically with the same belonging to such as bar code, magnetic stripe, IC-cards, and it is to utilize ultrashort wave (USW) or long wave to discern the most advanced mode of the information that is write down with wireless mode.The principle of such RFID is to receive the information that is stored on the label by antenna, by controller it is discerned, analyzes the intrinsic information that the article that above-mentioned label has been installed just can be obtained in the back, since its utilize frequency so do not avenged/influence of rain/wind/environment such as dirt/flux, because comparatively fast have in moving by speed also can discern, distance also can discern, also owing to give unique ID so have the feature that can not forge in manufacture process.
Above-mentioned RFID is applied to supermarket, parking management etc., for example write down the label of intrinsic information under the situation at the supermarket as if installation on items for merchandising, number of articles of then using the information controller that receives by above-mentioned label just can automatically know to remain at present on the show stand etc., the consumer need not calculate the information that also can easily collect about the article of having bought separately, so the convenience that can provide the available credit card to settle accounts etc.
In the past, have electromagnetically induced type and electromagnetic coupled type in the radio frequency identification sign, any one all is to utilize electromagnetic wave and read-write (read write) terminal organ etc. to communicate non-contactly.The RFID label has aerial coil and control part, when the antenna coil receives the transmission signal of read-write terminal device, control part is converted into electric power and is stored in the capacitor, utilizes this electric power further to send to the read-write terminal device by the information such as identification (ID) sign indicating number that aerial coil will be stored in storage part simultaneously.
Generally speaking, the known and most utilization of radio frequency identification label and radio frequency identification tag system.For example, the radio frequency identification label is used for carrying out individual identification more in automatic gate inhibition's monitoring application in protection security personnel's buildings or zone etc.Institute's canned data is to discern the such individual of security personnel's buildings that will come in and go out in the radio frequency identification label.The radio frequency identification tag system is utilizing the wireless frequency data transferring technique, and the liftoff interpretation of short distance is from comparatively convenient on the information of radio frequency identification label.Tool experience ground, the user gets final product the radio frequency identification label is positioned at the base station (a base station) that the radio frequency identification label power supply circuit that is comprised transmits pumping signal (an excitation signal) on the frequency identification label near.Circuit is replied pumping signal and is transmitted stored information from the radio frequency identification label to above-mentioned base station, and the base station receives information and carries out interpretation.Generally speaking, the radio frequency identification label can be possessed the information of a great deal of, the enough information of degree such as promptly unique identification individual, parcel, stock and transmitting.
The typical technology that carries out interpretation to radio frequency identification label supply electric power (powering) is the technology that inductivity coupling (inductive coupling) or inductivity electric power coupling (inductive powercoupling) and capacitive character data couplings (capacitive data coupling) are combined.Inductivity is coupling in and uses coil composed component (a coil element) in the radio frequency identification label.The coil composed component encourages (or activation) back to radio frequency identification tag circuit supply capability by base station pumping signal (an excitation signal).Radio frequency identification tag coil or the 2nd tag coil can also be used for transmitting the stored information that receives between radio frequency identification label and above-mentioned base station.For make the field (a the field) that produces by above-mentioned pumping signal be coupled effectively must with the in fact crossing at right angle of coil composed component, so the radio frequency identification label that depends on inductivity coupling sensitivity on the direction of the radio frequency identification label of base station relatively.Interpretation range for the device of being induced coupling is generally several centimetres of degree.The longer the better apart from length in interpretation, follows the tracks of (baggage tracking), package tracking (parcel tracking) and stock control purposes (inventory management applications) the interpretation distance that special-purpose need be longer like this for electronic type animal identification (electronic animal identification), luggage.
The other technologies of carrying out interpretation to radio frequency identification label supply electric power (powering) are the electrostatic coupling technology that is used for radio frequency identification tag system and radio frequency identification label.Available interpretation/record the distance that remarkable increase is provided of comparing in this system and the prior art.Other advantage that is derived from from using of above-mentioned disclosed system and label there is no need just label also to there is no need the base station sets tag orientation very near the base station as users.Thereby, for example the antenna inscape of base station can be combined in gateway (doorway) or porch (vestibule), parcel transporter or the article sorting system, and can farther distance activate label and come the interpretation label information.
In the transmitting-receiving mode, have amplitude shift keying (ASK:Amplitude Shift Keying) mode and frequency shift keying (FSK:Frequency Shift Keying) mode.If classify the RFID label general and then have the discoid aerial coil that uses the circular hollow coil and on bar-shaped FERRITE CORE, twine these two kinds of the aerial coils of the cylindrical shape that insulation such as enamel (enamel) line covers copper cash with the aerial coil form, its profile is corresponding with each aerial coil form, and the former forms discoid and the latter forms bar-shaped.RFID label with discoid aerial coil utilizes circular coil face direction flux to change and communicates, and the RFID label with columned aerial coil utilizes the direction of principal axis flux to change and communicates.In addition; when keeping/carrying of RFID label and use; not to be subjected to from the stress of outside or to impact parcels such as using container mostly around it in order to protect; but read terminal device etc. and communicate with RFID in order to make at external container; do not use the conductive of material of forming by communication shielding (barrier) as container material, and generally use non-conductive parts such as plastics.
; electromagnetic wave is that the material and the magnetic field that will exchange change are converted to 90 degree phase places, by this changes of magnetic field, and alternation flux and iron/aluminium/when conductive components such as copper intersect; in above-mentioned conductive component, produce excess current, produce flux to negative alternating magnetic field direction by this excess current.Therefore existing RFID label operated by rotary motion gets as far as possible away from electroconductive component.And; in order to protect set RFID label not to be subjected to cover its face side with protective from the stress or the impact of outside; but for read-write terminal equipment etc. is communicated with the RFID label; do not use the conductive of material of forming by the communication shielding as the material of protective, and generally use non-conductive material such as plastics.Thereby, because non-conductive parts such as plastics are because intensity is also not really high, so the situation that can not make the RFID label obtain adequately protecting is more.For example, the RFID label is being set under the situations such as metal hand-hole cover cap, reason vehicle etc. passes through the traffic loading that causes and does not add with reducing and have problems on permanance.
In addition, the existing radio frequency identification label that is used for this label for its thickness limits for the thinnest, can use by being insulated a lead that layer covers and being rolled on the roughly foursquare main substrate and forming in that the surface is bonded to, or the unwanted part of removing conductive layers such as aluminium film stacked on main substrate or copper film with etching method or pressing etc. forms spirality.The radio frequency identification that possesses such antenna is identified at the situation that the management object thing is formed by metal, because be subjected to the problem points that the metallic article influence exists radio frequency identification sign acceptance rate to worsen, being electrically connected with conductive component for fear of antenna must be at the alternate fixed bonding dielectric film in conductive component surface.
But, use the application of ferrous materials goods very varied now.The magnetic drum applications such as (drum) of representational roll shop building (roll shop) that steel plant are arranged and the history management of iron and steel own, gas tank management, the nuclear reactor in its application.At first, the situation of steel plant for iron and steel originally on one's body adhesive label manage the steel product field, on the roll shop building stand, have the fields such as roll shop building of managing roll.For the steel product management is manually adhered to bar code on the cold rolling steel ring of being produced, the first, can not read a plurality of bar codes simultaneously, the second, can not read and write data, the 3rd, since the situation of damage bar code surrounding environment such as surrounding environment dust or humidity not only can not guarantee data correctness but also define discernible distance., promptly rise to the high heat of tens of degree, the chilled water that is used to cool off, dust etc. and can not use bar code or optical sensor to discern equipment like this owing to rugged surroundings in the steel plant in roll shop building (rollshop) situation.Thereby, finish by charge to manual operationss such as each roll with chalk, but this because can not the time assigned address of being everlasting see by cancellation or the information charged to so it is extremely unreasonable.Therefore, use is by using the such method of RF reader just can increase discrimination on the equipment like this at roll side attachment label and at crane or PDA, improve the convenience of operation, but because such goods all be steel product, thus with label directly under the situation of stickup discrimination approach 0%.Thereby existence must process on iron and steel a problem points of using label surely.
The antenna that present radio frequency identification system must have small-sized/cheapness/light weight/little profile (profile).Yet, existing microstrip antenna is because so the manufacturing price of the higher antenna of price is higher, there is the problem points that is difficult to miniaturization/lightweight antenna size in (the レ キ ソ ラ イ De etc.) such as teflons that are mainly used in dielectric base plate because employed specific inductive capacity is died usually in 1.17～10.3 scopes.In addition, because the regulation of antenna in the past decipherment distance, also limit its frequency span, so can not solve at miniaturization and design problem and at expansion frequency range problem points, in general because antenna regulation decipherment distance and width are short so have the trouble that must be set up in parallel a plurality of antennas, because above-mentioned antenna decipherment distance that disposes in mode arranged side by side and width and indefinite, so exist if the above-mentioned antenna of disengaging is set up the when regional information Recognition probability of failure problem of higher point of label then.
Summary of the invention
The present invention is exactly with the problem points that solves in the foregoing radio frequency identification system in the past, even also be not subjected to the influence of metallic divine force that created the universe product can not make the acceptance rate variation of radio frequency identification sign also can realize the radio frequency identification system of lightweight/miniaturization simultaneously under the situation that the management object thing is formed by metal so its purpose is to provide a kind of.
In order to reach foregoing purpose, the invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign, paster antenna and reader, above-mentioned radio frequency identification sign comprises: the RFID chip, make the die attach that deposited management object thing information in through on the substrate that second order buckling had and form, and communicate with terminal organ; At one end be formed with the antenna and the rectangle antenna of chip mounting groove with rectangular shape; Partition constitutes to make for the acceptance rate variation that does not make radio frequency identification sign and has electrical insulating property between the above-mentioned antenna; And coating, constituted by be electrically connected the insulator that moisture-proof/permanance is increased and form with the management object thing for fear of above-mentioned antenna, wherein, for make above-mentioned antenna be coupled in abreast above-mentioned partition on/Xia Gemian, make above-mentioned RFID chip be coupled in the side of above-mentioned partition and a side of the substrate of above-mentioned RFID chip is coupled to an end of above-mentioned antenna, other sides are coupled to an end of antenna, and utilize above-mentioned coating that integral body is wrapped and formed, by above-mentioned antenna disperse that activation signal transmits self information thus with reader so that reader can cognitive above-mentioned RFID chip information.
In addition, the invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign, paster antenna and reader, above-mentioned paster antenna comprises: dielectric ceramics, in central portion perforation and have the feed mouth, formed by 4.0～210 pottery by specific inductive capacity; A conducting membrane that the side had at above-mentioned dielectric ceramics; Ground plate, standby in other sides of above-mentioned dielectric ceramics institute, in the central portion perforation and form the feed mouth; And feed pin, be inserted into the feed mouth of above-mentioned dielectric ceramics and carry out feed with above-mentioned conducting membrane electric coupling, wherein, the feed mouth of above-mentioned feed pin by above-mentioned dielectric ceramics is inserted into and forms, above-mentioned conducting membrane constitutes and covers formed feed mouth on the above-mentioned dielectric ceramics, and carry out electric coupling with feed pin that the feed mouth that is inserted into above-mentioned dielectric ceramics is coupled, the feed degree of lip-rounding of above-mentioned ground plate becomes also bigger than the size of the feed mouth of above-mentioned dielectric ceramics, and insulate with above-mentioned feed pin.
In addition, the invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign, paster antenna and reader, wherein, above-mentioned paster antenna constitutes with a chip and is central link and has a plurality of formation antennas, make that to constitute antenna from each identical to the distance of chip, can make decipherment distance and bandwidth improve and further improve directive property and efficient.
Description of drawings
Fig. 1 is the decomposition side view according to radio frequency identification sign of the present invention.
Fig. 2 is the side view according to radio frequency identification sign of the present invention.
Fig. 3 peels off the side view of state of bonding coating of the radio frequency identification sign of Fig. 2 for diagram.
Fig. 4 is the sectional view along Fig. 2 A-A ' line.
Fig. 5 is the side view according to radio frequency identification sign of the present invention.
Fig. 6 is the decomposition side view according to paster antenna of the present invention.
Fig. 7 is the side view according to paster antenna of the present invention.
Fig. 8 is the sectional view along A-A ' line of above-mentioned Fig. 7.
Fig. 9 is the summary construction diagram of the paster antenna according to the present invention.
Enforcement illustration when Figure 10 is two for constituting antenna.
Enforcement illustration when Figure 11 is four for constituting antenna.
Figure 12 is the key diagram of the general structure of summary signal radio frequency identification system.
(description of reference numerals)
1: main substrate; The 2:RFID chip; 3,3 ': antenna; 4: bonding coating; 40,50,60: chip; 41,42,51,52,53,54: constitute antenna; 71,72,73,74,71 ', 72 ', 73 ', 74 ': constitute antenna; 100: the radio frequency identification sign; The 120:RFID chip; 121: chip; 122: substrate; 130,130 ': antenna; 131: the chip mounting groove; 140: partition; 150: coating; 160: bonding coating; 161: bonding plane; 210: dielectric ceramics; 211: the feed mouth; 220: conducting membrane; 230: ground plate; 231: the feed mouth; 240: the feed pin; The S10:RF signal sends; The S15:RF signal receives; S20: recognition data is derived; S25:RF transmits; The S30:RF signal receives; S35: interpretation is handled; S40: carry out data by user's PC and transmit; S45: display part output; J1, J2, J3, J4, J5, J6, J7, J1 ', J2 ', J3 ': contact
Embodiment
Below, describe embodiment of the invention feature structure and action effect with reference to the accompanying drawings in detail.
Fig. 1 is the decomposition side view according to radio frequency identification sign of the present invention, Fig. 2 is the side view of radio frequency identification sign of the present invention, Fig. 3 peels off the side view of state of bonding coating of the radio frequency identification sign of above-mentioned Fig. 2 for diagram, Fig. 4 is the sectional view along A-A ' line of Fig. 2, Fig. 5 is the side view according to radio frequency identification sign of the present invention, Fig. 6 is the decomposition side view according to paster antenna of the present invention, Fig. 7 is according to paster antenna decomposition side view of the present invention, Fig. 8 is the sectional view along A-A ' line of above-mentioned Fig. 7, Fig. 9 is according to paster antenna summary construction diagram of the present invention, Figure 10 is two enforcement illustrations under the situation for constituting antenna, Figure 11 is four enforcement illustrations under the situation for constituting antenna, and Figure 12 is the key diagram of the general structure of summary signal radio frequency identification.
The invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign 100, paster antenna and reader, it is characterized in that, above-mentioned radio frequency identification sign 100 comprises: RFID chip 120, make the chip 121 that deposited management object thing information in attached to through on the substrate 122 that second order buckling had and form, and communicate with terminal organ; With rectangular shape at one end be formed with the antenna 130 of chip mounting groove 131 and rectangle antenna 130 '; Partition 140, constitute for the acceptance rate variation that does not make radio frequency identification sign make above-mentioned antenna 130,130 ' between have electrical insulating property; And coating 150, by for fear of above-mentioned antenna 130,130 ' be electrically connected the insulator that moisture-proof/permanance is increased and form with the management object thing to constitute, wherein, for making above-mentioned antenna 130,130 ' abreast be coupled in above-mentioned partition 140 on/Xia Gemian, make above-mentioned RFID chip 120 be coupled in the side of above-mentioned partition 140 and a side of the substrate 122 of above-mentioned RFID chip 120 is coupled to an end of above-mentioned antenna 130, with other sides be coupled to antenna 130 ' an end, and utilize above-mentioned coating 150 that integral body is wrapped and formed, by above-mentioned antenna 130,130 ' disperse that activation signal transmits self information thus with reader so that reader can cognitive above-mentioned RFID chip 120 information.
The various information of RFID chip 120 storage administration objects also communicate the information that provides with terminal organ (reader).Above-mentioned RFID chip 120 will deposit the chip 121 of information of management object thing in attached on the substrate 122 and form.Aforesaid substrate 122 has the shape through second order buckling.
Antenna 130,130 ' constitute so that thickness minimizes with the thin plate of rectangular shape, by above-mentioned antenna 130,130 ' disperse activation signal, information with self transmits with reader thus, and makes the information that reader can cognitive above-mentioned RFID chip 120.Above-mentioned antenna 130,130 ' by copper (Cu), gold (Au), silver formations such as (Ag).
Above-mentioned partition 140 is for fear of antenna 130,130 ' be electrically connected with the management object thing, and in advance with management object thing partition distance so that above-mentioned antenna 130,130 ' does not mutually contact places and be equipped with.
In addition, above-mentioned partition 140 thickness are preferably 3～10mm.Because if the thickness of the thicker then radio frequency identification sign 100 of the thickness of above-mentioned partition 140 is just thicker, so above-mentioned radio frequency identification sign 100 is being attached under the situation of management object thing, is just having in the carrying of management object thing with when mobile or the problem points that above-mentioned radio frequency identification sign 100 breaks away from from the management object thing easily during other movement of objects.In addition, above-mentioned partition 140 preferably is made of materials such as pottery, foamed material, teflons.
Pottery (ceramics) is the general name of heat-treating the nonmetal solid inorganic material of back made with high temperature, has the good characteristics of refractability.
Foamed material (sponge) is the sponge by electro-insulating rubber or synthetic resin made, is meant the spongy porous mass of rubber-like.Representative polymer substance is a polyurethane, is made/use by soft urethane foam (flexible foamed polyurethane).The carbon dioxide that foaming produces when utilizing polyurethane to make is mostly made, but also also uses gas-development agents such as breathing out imperial gas sometimes.The viscose sponge that useful in addition viscose rayon (rayon) is made, make foamed rubber that rubber pange makes etc. with gas-development agent.
Teflon (teflon: even if PTFE) for crystalline resins has the thermotolerance that long-term use also can stand under 260 ℃, for having special plastics such as drug resistance, electrical insulating property, high-frequency characteristic, non-cementability, low-friction coefficient, flame resistance.PTFE is the crystalline polymer of 327 ℃ of fusing points, and its continuous serviceability temperature is 260 ℃, can use to high-temperature stable ground from low temperature (260 ℃).For the highest, the infringement of acid and alkali/alkali/all kinds of solvents only is subjected to the infringement of fluorine family gas/fusing alkaline metal/special medicines such as three fluoride salts to drug resistance under harsh conditions fully, can be used in gasket packing/various encapsulants etc. among organic material.
To be characterized as friction factor less for maximum on mechanical property, thereby be used to not have bearing (Bearing) of cunning moving material etc. after reinforcing with various compaction materials.In addition, the coating etc. that is suitable for fat fryer or various steel pipes because of the also bigger feature of non-cementability most.
Above-mentioned coating 150 is by being used to avoid above-mentioned antenna 130,130 ' be electrically connected with the management object thing, moisture-proof/permanance increased and the insulator that forms constitutes.This is because under the situation that antenna is formed by aluminium foil or Copper Foil etc., need also fix by alternate placement dielectric film on the conductive component surface for fear of above-mentioned antenna 130,130 ' be electrically connected with conductive component.
The radio frequency identification of the radio frequency identification system of the present invention of Gou Chenging sign 100 is for making above-mentioned antenna 130 as previously mentioned, 130 ' abreast be coupled in above-mentioned partition 140 on/Xia Gemian, make above-mentioned RFID chip 120 be coupled in the side of above-mentioned partition 140 and a side of the substrate 122 of above-mentioned RFID chip 120 is coupled to an end of above-mentioned antenna 130, with other sides be coupled to antenna 130 ' an end, above-mentioned RFID chip 120 is coupled to the side of above-mentioned partition 140 and utilizes above-mentioned coating 150 that integral body is wrapped and formed, adhesive-applying etc. on bonding plane 161, has bonding coating 160 on the top of above-mentioned bonding plane 161, after peeling off above-mentioned bonding coating 160 on the needs article, adhere to, by above-mentioned antenna 130,130 ' disperse that activation signal transmits self information thus with reader so that reader can cognitive above-mentioned RFID chip 120 information.
In addition, above-mentioned antenna 130 preferably at one end forms chip mounting groove 131.Since the chip mounting groove 131 of above-mentioned antenna 130 above-mentioned RFID chip 120 is installed and can avoid from the impact of outside or with the conflicting of inside antenna 130, so the mistake in the time of can reducing the information Recognition of RFID chip 120, copper (Cu), gold (Au), silver (Au) form above-mentioned antenna 130,130 ' preferably preferably by above-mentioned conduction.Copper has easy purchase, is very easy to processing, cheap advantage.The size of the radio frequency identification sign 100 that constitutes as described above is preferably degree of growing crosswise 8～12cm, lengthwise degree 1～5cm degree.
As shown in Figure 5, when in order to be recorded in recognition data in the RFID chip in advance by the terminal organ interpretation when sending the RF signal (step S10), above-mentioned RF signal is attached to the RFID label 2 that uses article and receives (step S15).At this moment, behind the intrinsic recognition data that proposes to be taken in from storer by radio frequency identification sign 100 (step S20), its mounting is transmitted (step S25) to the outside on the RF signal.When above-mentioned RF signal is received by terminal organ (step S30), carry out interpretation and handle (step S35), above-mentioned interpretation result is sent to external users's computing machine, carry out handling with identification and accurate Calculation through the corresponding information of the data of interpretation, and with its data base system (step S40).Export (step S45) by display portion simultaneously, with through the corresponding information of the data of interpretation.
In addition, the invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign 100, paster antenna and reader, it is characterized in that, above-mentioned paster antenna comprises: dielectric ceramics 210, in central portion perforation and have feed mouth 211, formed by 4.0～210 pottery by specific inductive capacity; A conducting membrane that the side had 220 at above-mentioned dielectric ceramics 210; Ground plate 230, standby in other sides of above-mentioned dielectric ceramics 210 institute, in the central portion perforation and form feed mouth 231; And feed pin two 40, be inserted into the feed mouth 211 of above-mentioned dielectric ceramics 210 and carry out feed with above-mentioned conducting membrane 220 electric coupling, wherein, the feed mouth 211 of above-mentioned feed pin two 40 by above-mentioned dielectric ceramics 210 is inserted into and forms, above-mentioned conducting membrane 220 constitutes and covers formed feed mouth 211 on the above-mentioned dielectric ceramics 210, and carry out electric coupling with feed pin two 40 that the feed mouth 211 that is inserted into above-mentioned dielectric ceramics 210 is coupled, the feed mouth 231 of above-mentioned ground plate 230 forms also bigger than the size of the feed mouth 211 of above-mentioned dielectric ceramics 210, and insulate with above-mentioned feed pin two 40.
Above-mentioned dielectric ceramics 210 is in central portion perforation and have feed mouth 211, is that 4.0～210 pottery constitutes by specific inductive capacity.Above-mentioned dielectric ceramics 210 is that (microstrip: the dielectric of substrate microstrip line), it is all polymorphic to be made as equilateral triangle/rectangle/circle/square/annular etc. as little band.Generally speaking, Tao Ci specific inductive capacity has 4.0～210 multiple value.The specific inductive capacity of the above-mentioned dielectric ceramics 210 that uses as dielectric base plate forms 4.0～210 value with multiple pottery.
Briefly, (dielectric constant permittivity) is meant when two charge interaction repulsive forces or attractive force specific inductive capacity, used proportionality constant during the interaction of expression electric charge intensity and acting force.Thereby specific inductive capacity is different because of the kind that is present in the material (medium) between two electric charges that act on charge force.In addition, it is meant the ratio of the permanent electric capacity when permanent electric capacity when putting into as dielectric certain material and what are not all put between the electric storage means pole plate, and in general dielectric specific inductive capacity is usually greater than 1.For example the specific inductive capacity of atmosphere is such as 1.000335 like this than 1 big a little value, but this value is according to the amount of water vapour contained in the atmosphere and than exerting an influence about greatly and to the propagation of electric wave.
Attempt investigating the characteristic of meaning shown in the dielectric constant values, is to bring the most important factor of influence of design then it also is the wavelength problem if establish dielectric constant values.If specific inductive capacity uprise the electromagnetic wavelength of then in this dielectric, advancing have to divide with the specific inductive capacity square root, be guide wavelength (GuidedWavelength) value, so will itself bring decisive influence to circuit structure is big or small.In general, reduce circuit size one of the simplest method for to substitute dielectric method used in substrate or resonator with the high dielectric constant material.In addition, also have to reduce also to use with beyond the such side of size the different material of specific inductive capacity applying flexibly the wavelength components that meets each material, or generate the situation of making characteristic by the multiplexed ripple that utilizes the specific inductive capacity operation.In a word, in general the size at the situation infrabasal plate that uses the higher substrate of dielectric constant values diminishes, and is big in the size change of the situation infrabasal plate that uses the lower substrate of dielectric constant values.
Generally speaking, pottery was compared be used as dielectric material in the past, and much less specific inductive capacity is very high and varied, because the degree of stability that changes according to purposes is very high, so have the feature that extremely is fit to lightweight/miniaturization.
Above-mentioned conductive membranes 220 is provided to a side of above-mentioned dielectric ceramics 210, have equilateral triangle/rectangle/circle/square/various forms such as annular in principle, above-mentioned conductive membranes 220 1 sides are cut off and constitute like this so that by above-mentioned conductive membranes 220 formed radiated electric field changes.In addition, above-mentioned conductive membranes 220 generally is to constitute and form the emitting surface of antenna by gold (Au)/silver (Ag)/copper conductive materials such as (Cu).
Above-mentioned ground plate 230 is provided to other sides of above-mentioned dielectric ceramics 210, at central portion perforation and formation feed mouth 231, it is also bigger than the size of the feed mouth 211 of above-mentioned dielectric ceramics 210 that the feed mouth 231 of above-mentioned ground plate 230 is formed, and with above-mentioned feed pin two 10 insulation.
Above-mentioned feed pin two 40 is inserted into the feed mouth 211 of above-mentioned dielectric ceramics 210 and is electrically coupled to above-mentioned conducting membrane 220 and powers, suitably adjusting position changes desirable impedance operator, at the minimized ground plane of coupling that makes between feeding point and the conducting membrane 220.Above-mentioned feed pin two 40 forms with the diameter of the size of the feed mouth 211 of the above-mentioned dielectric ceramics 210 of correspondence.
The paster antenna of radio frequency identification system according to the present invention possesses conducting membrane on above-mentioned dielectric ceramics 210, below above-mentioned dielectric ceramics 210, all surfaces that promptly possess other sides of above-mentioned conducting membrane 220 constitute above-mentioned ground plate 230.In addition, be used for being inserted into and form to the feed pin two 40 of the above-mentioned conducting membrane 220 supply powers feed mouth 211 by above-mentioned dielectric ceramics 210, above-mentioned conducting membrane 220 constitutes and covers formed feed mouth 211 on the above-mentioned dielectric ceramics 210, and carry out electric coupling with feed pin two 40 that the feed mouth 211 that is inserted into above-mentioned dielectric ceramics 210 is coupled, the feed mouth 231 of above-mentioned ground plate 230 forms also bigger than the size of the feed mouth 211 of above-mentioned dielectric ceramics 210, and insulate with above-mentioned feed pin two 40 and to form like this, owing to can not make the acceptance rate variation of radio frequency identification sign, even if not influenced by metallic article, so have the effect that to carry out the history management of metal material article.
In addition, the invention provides a kind of radio frequency identification system that constitutes by radio frequency identification sign 100, paster antenna and reader, above-mentioned paster antenna possesses a chip 60 at central portion, on said chip 60, link and have a plurality of formation antennas 71,72,73,74,71 ', 72 ', 73 ', 74 '.
From above-mentioned formation antenna 71 to the distance contact J1 with identical to the distance of contact J1 from above-mentioned formation antenna 72.Equally, make from constituting antenna 73 and constitute like this to the distance of contact J2 is identical with distance from above-mentioned formation antenna 74 to contact J2.In addition, make that distance from above-mentioned contact J1 to contact J3 is identical with distance from contact J2 to contact J3 to be constituted like this.Then, constitute and make that the distance to contact J3 is identical separately from constituting antenna 71,72,73,74, the result just constitutes that to constitute antenna 71,72,73,74 from each identical to the distance of chip 60.
In addition, from above-mentioned formation antenna 71 ' to the distance of contact J1 ' with from above-mentioned formation antenna 72 ' identical to the distance of contact J1 '.Equally, make from constitute antenna 73 ' to the distance of contact J2 ' with from above-mentioned formation antenna 74 ' constitute like this to the distance of contact J2 ' is identical.In addition, make that distance from contact J1 ' to contact J3 ' is identical with distance from contact J2 ' to contact J3 ' to be constituted like this.Then, constitute from each constitute antenna 71 ', 72 ', 73 ', 74 ' identical to the distance of contact J3 ', the result just constitute from each constitute antenna 71 ', 72 ', 73 ', 74 ' identical to the distance of chip 60.
According to other embodiments of the invention, as illustrated in Figure 10, binding possesses a plurality of formation antennas 41,42 on a chip 40.Make from above-mentioned formation antenna 41 to contact J4 that distance is identical with distance from above-mentioned formation antenna 42 to contact J4 to be constituted like this, the result just constitutes that to constitute antenna 41,42 from each identical to the distance of chip 40.It is just identical to the distance of chip 40 from each above-mentioned formation antenna 41,42 to constitute the back as described above.
According to other embodiments of the invention, as illustrated in Figure 11, possess a chip 50 at central portion, binding possesses a plurality of formation antennas 51,52,53,54 on said chip 50.Distance from above-mentioned formation antenna 51 to contact J5 is with identical to the distance of contact J5 from above-mentioned formation antenna 52.Equally, constitute from constituting antenna 53 identical to the distance of contact J6 to the distance of contact J6 with above-mentioned formation antenna 54.In addition, the distance that constitutes from contact J5 to contact J7 is identical with distance from contact J6 to contact J7.Then, constitute that to constitute antenna 51,52,53,54 from each identical to the distance of contact J7, the result just constitutes that to constitute antenna 51,52,53,54 from each identical to the distance of chip 50.
It is just identical to the distance of chip 50 from each above-mentioned formation antenna 51,52,53,54 to constitute the back as described above.
Constitute as described above the back from each above-mentioned formation antenna 71,72,73,74,71 ', 72 ', 73 ', 74 ' just identical to the distance of chip 60.Paster antenna is attached to chip 60 with a plurality of formation antennas, can make decipherment distance and bandwidth improve and further improve directive property and efficient, the radio frequency identification system that is constituted all is expanded identification range and decipherment distance with paster antenna as described above, and can more reliably/easily transmit the information of radio frequency identification sign 100 to reader.In addition, because the radio frequency identification that constituted as described above identifies other system reading machine and label and constitutes with paster antenna that to constitute antenna from each identical to the distance of chip 60, so thereby just make the above-mentioned radio frequency identification of identification identify 100 information and transmit the reliability that will need same time expectation identifying information to chip 60.
As described above, to have inserted thickness be that the radio frequency identification sign of the partition of 3～10mm with electrical insulating property can not make the acceptance rate variation because use according to radio frequency identification system of the present invention, even if situation about being made of metal at the management object thing is not subjected to the influence of metallic article yet, so the effect that can carry out metal material article history management is just arranged, because the use specific inductive capacity is 4.0～210 pottery formation dielectric, can use the dielectric size significantly the paster antenna of miniaturization make the lightweight/miniaturization of antenna own, so can not only be attached to moving object can also be attached to small article and use, so the effect that not only can further improve antenna efficiency but also can use is easily just arranged, the remote interpretation antenna system part performance function that antenna moves in by the determined scope of regulation office as being associated with electric field transmitted (field emission) on one side, provide the suitable performance of finding out to whole possible label/antenna orientations on one side, compare with available antenna in the prior art and just to have very lightweight/miniaturization/low price, be suitable for stably reading the radio frequency identification system reading machine of information of radio frequency identification label and the effect that label is easily constituted with the ceramic paster antenna, also have to use and on chip, link the effect that the paster antenna that constitutes a plurality of formation antennas further improves directive property and efficient.
Claims (1)
1, a kind of radio frequency identification system that is made of radio frequency identification sign (100), paster antenna and reader is characterized in that,
Above-mentioned radio frequency identification sign (100) comprising:
RFID chip (120) makes the chip (121) that has deposited management object thing information in go up and form attached to the process formed substrate of second order buckling (122), and communicates with reader;
Rectangular second antenna (130 ') and at one end be formed with first antenna (130) of the chip mounting groove (131) of rectangular shape;
Partition (140) constitutes to make between above-mentioned first and second antennas (130,130 ') and has electrical insulating property, so that do not make the acceptance rate variation of radio frequency identification sign; And
Coating (150), the insulator that forms by be electrically connected and make moisture-proof/permanance to increase for fear of above-mentioned first and second antennas (130,130 ') and management object thing is constituted,
Wherein, for making above-mentioned first and second antennas (130,130 ') be coupled in the upper and lower surface of above-mentioned partition (140) abreast, make above-mentioned RFID chip (120) be coupled in the side of above-mentioned partition (140) and a side of the substrate (122) of above-mentioned RFID chip (120) is coupled to an end of above-mentioned first antenna (130), other sides are coupled to an end of second antenna (130 '), and utilize above-mentioned coating (150) that integral body is wrapped and formed, by above-mentioned first and second antennas (130,130 ') the emission activation signal thus self information is transmitted with reader so that reader can cognitive above-mentioned RFID chip (120) information.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR200497220 | 2004-11-25 | ||
| KR2004-97220 | 2004-11-25 | ||
| KR200497221 | 2004-11-25 | ||
| KR1020040097220A KR100847351B1 (en) | 2004-11-25 | 2004-11-25 | radio frequency identification tag |
| KR2004-97221 | 2004-11-25 | ||
| KR200512716 | 2005-02-16 | ||
| KR2005-12716 | 2005-02-16 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100087230A Division CN101216902A (en) | 2004-11-25 | 2005-11-25 | Radio frequency identification system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1818936A CN1818936A (en) | 2006-08-16 |
| CN100433055C true CN100433055C (en) | 2008-11-12 |
Family
ID=36918940
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101217204A Expired - Fee Related CN100433055C (en) | 2004-11-25 | 2005-11-25 | Radio frequency identification system |
| CNA2008100087230A Pending CN101216902A (en) | 2004-11-25 | 2005-11-25 | Radio frequency identification system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100087230A Pending CN101216902A (en) | 2004-11-25 | 2005-11-25 | Radio frequency identification system |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100847351B1 (en) |
| CN (2) | CN100433055C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100686598B1 (en) * | 2005-09-30 | 2007-02-26 | 주식회사 손텍 | Radio frequency identification tag with printed antenna |
| KR100686599B1 (en) * | 2005-09-30 | 2007-02-26 | 주식회사 손텍 | Radio frequency identification tag with fabrics antenna |
| KR100764106B1 (en) * | 2006-04-06 | 2007-10-09 | 주식회사 손텍 | Metal tag |
| WO2008050689A1 (en) * | 2006-10-27 | 2008-05-02 | Murata Manufacturing Co., Ltd. | Article with electromagnetically coupled module |
| JP4950627B2 (en) * | 2006-11-10 | 2012-06-13 | 株式会社日立製作所 | RFIC tag and its use |
| JP5146664B2 (en) * | 2008-05-27 | 2013-02-20 | ブラザー工業株式会社 | Wireless tag communication device |
| US9135547B2 (en) * | 2008-12-19 | 2015-09-15 | Avery Dennison Corporation | Optical control of RFID chips |
| KR101043757B1 (en) * | 2009-03-20 | 2011-06-22 | (주) 정설시스템 | Metal tag |
| CN102184444A (en) * | 2011-04-29 | 2011-09-14 | 永道无线射频标签(扬州)有限公司 | Electronic tag used for metal |
| CN103353948B (en) * | 2013-07-26 | 2016-09-28 | 上海曜传信息科技有限公司 | A kind of embedded chip type RFID label tag and preparation method thereof |
| US11233336B2 (en) * | 2019-02-08 | 2022-01-25 | Samsung Electro-Mechanics Co., Ltd. | Chip antenna and chip antenna module including the same |
| CN113192306B (en) * | 2021-03-31 | 2023-04-18 | 中国电建集团山东电力建设第一工程有限公司 | Tool and instrument anti-loss method and system based on RFID (radio frequency identification device) identification |
| CN114335987B (en) * | 2022-03-15 | 2022-06-07 | 英内物联网科技启东有限公司 | Antenna module with RFID electronic tag formula |
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- 2004-11-25 KR KR1020040097220A patent/KR100847351B1/en not_active IP Right Cessation
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- 2005-11-25 CN CNB2005101217204A patent/CN100433055C/en not_active Expired - Fee Related
- 2005-11-25 CN CNA2008100087230A patent/CN101216902A/en active Pending
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| CN1333935A (en) * | 1998-12-14 | 2002-01-30 | 松下电器产业株式会社 | Active phased array antenna and antenna controller |
| CN1364278A (en) * | 1999-05-22 | 2002-08-14 | 马科尼数据系统有限公司 | Identification tag |
| US20030117323A1 (en) * | 2001-02-01 | 2003-06-26 | Birnbaum Thomas J. | Recessed aperture-coupled patch antenna with multiple dielectrics for wireless applications |
| US20020190906A1 (en) * | 2001-06-15 | 2002-12-19 | Korea Institute Of Science And Technology | Ceramic chip antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060058253A (en) | 2006-05-30 |
| CN1818936A (en) | 2006-08-16 |
| CN101216902A (en) | 2008-07-09 |
| KR100847351B1 (en) | 2008-07-21 |
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