CN102201073A - RFID tag equipped with RFID boradband protective metal member - Google Patents
RFID tag equipped with RFID boradband protective metal member Download PDFInfo
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- CN102201073A CN102201073A CN2010101716190A CN201010171619A CN102201073A CN 102201073 A CN102201073 A CN 102201073A CN 2010101716190 A CN2010101716190 A CN 2010101716190A CN 201010171619 A CN201010171619 A CN 201010171619A CN 102201073 A CN102201073 A CN 102201073A
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Abstract
The invention discloses an RFID tag equipped with an RFID boradband protective metal member, wherein RFID inserts or other plug-in elements can be well protected. The electromagnetic wave of LF and HF bands will be reflected on the surface of a metal plate due to eddy current. Therefore, the slit-shaped cut is performed on metal plates and the lower part thereof is equipped with an insert. On the other hand, for the electromagnetic wave of UHF and microwaves, the size of metal plates are set in such a way that the metal plates will resonate at the frequency thereof and are high in sensitivity. Then metal members are protected by the metal plates and various inserts are placed therein. Therefore, corresponding metal tags correspondent with the multipal frequencies are realized.
Description
Technical field
The present invention relates to possess RFID (radio-frequency (RF) identification) with the RFID label of broadband protection metalwork, particularly relate to and have the RFID label that can in the broadband of LF (low frequency), HF (high frequency), UHF (superfrequency) and microwave band, use and improve the protection metalwork of electric and mechanical impact tolerance.
Background technology
Generally speaking; the RFID label is to have added diaphragm, the bonding agent that usefulness is installed, fabricated section etc. to plug-in unit (inlet) to use and form; wherein; plug-in unit constitutes by having connected at the antenna of the IC chip of identifying informations such as the built-in id number of integrated circuit and the base material that carries this antenna integratedly; via IC chip, antenna, installation metalwork, identifying informations such as id number are carried out communication from the outside by reader/writer as wireless means.
Sometimes will this general RFID label as metal displacer inserting RFID tags or the integrated RFID label of metallic object, be installed on the object surfaces, in harsh scene action such as outdoor mechanicalness impact, electrical impact.The RFID label of answering about such metal pair; proposed following structure: the IC chip that should protect is accommodated in the inside of protection metalwork; can not stop the electromagnetic mode of communication with the protection metalwork by reflection, absorption or decay etc., internally to the outside or from the outside to inner propagation of electromagnetic waves.
For example, in the so very high frequency band of UHF, microwave, as patent documentation 1, patent documentation 2 are disclosed, become protection metalwork in the electro permanent magnetic size of the electromagnetic frequency low-resonance of communication.And; in this protection metalwork; take in the integral body of RFID plug-in unit; make a part or the whole electromagnetic coupled of antenna with the protection metalwork of plug-in unit; the zone that will be used to take in RFID tag body portion is arranged on protection metalwork central authorities by the incision slit of opening; the short circuit of protection metalwork this protection metalwork is close on the metal covering that the other side is installed, even also can realize the communication of RFID from the slit portion radiated electromagnetic wave.
On the other hand, in the such frequency band of LF, HF, the communication electromagnetic wave produces vortex flow in metal covering, and this makes the incident electromagnetic wave reflection, so hinder communication.Therefore; as conventional art; following method has obtained practicability: the RFID plug-in unit that will have the coil antenna of LF, HF band is housed in the sunk part of protection metalwork; lay magnetic sheet and mounting RFID plug-in unit thereon in the bottom of this depression; this magnetic sheet induces electromagnetic wave; thereby when making incident electromagnetic wave enter into the bottom from the top, crooked abreast in the metal surface of bottom, thus do not produce vortex flow.In addition, as additive method, in sunk part with the direction of the direction quadrature of vortex flow on the insulator that forms by groove, otch is set, stop the method for vortex flow also to obtain practicability.
For example, in patent documentation 3, the structure that is provided with of following RFID label being disclosed: for the communication electromagnetic wave, the frequency of LF as object, has been covered RFID label integral body via resin with metal fender.
In patent documentation 4, patent documentation 5, the relevant technology of protection with the IC chip of HF being disclosed: only protects the IC chip part of IC-card with metal reinforcing plates, with other parts of resin sheet protection plug-in sheet.
And then in patent documentation 6, disclose the technology relevant with the guard method of RFID label: plug-in unit has the antenna of half-wavelength, and making the guard member that covers plug-in unit integral body is that dielectric etc. is nonmetal.
Patent documentation 1: No. 4271205 communique of Jap.P.
Patent documentation 2: TOHKEMY 2008-90813 communique
Patent documentation 3: TOHKEMY 2002-157565 communique
Patent documentation 4: TOHKEMY 2000-311225 communique
Patent documentation 5: TOHKEMY 2005-4429 communique
Patent documentation 6: TOHKEMY 2004-265114 communique
Along with the performance of RFID label, the raising of function, it utilizes field, purposes to enlarge rapidly, for metal displacer inserting RFID tags, the integrated RFID label of metallic object, also is used for various places such as indoor, outdoor with various uses.
But the electromagnetic wavelength of LF, HF, UHF, microwave band is respectively 2.4km, 23m, 31cm, 122mm, and size difference becomes the difference of antenna pattern of the plug-in unit of each frequency.That is, the size of RFID label must be the size that can pinch or can grab such easy operating to its people who handles.In order to make label converge on such size, in LF, HF band, use the small tours antenna of coiled type, in UHF, microwave band, use the dipole antenna of wire.
The protection metalwork corresponding with the wire plug-in unit of UHF, microwave band uses following structure: so that metalwork and the plug-in unit mode of the electromagnetic coupled structure of utilizing the medium of high relative dielectric constant, high relative permeability to isolate not; And in order to be easy to half wave resonances size, realize to pinch, grabbing the processing size of such label, the structure of the gimmick that protection metalwork double as antenna is resonated energetically with dipole antenna.
The dipole antenna that patent documentation 1, patent documentation 2 disclosed protection metalworks are used corresponding to the high frequency band of UHF, microwave, can't be corresponding to the coiled type that the frequency band of LF, HF is used small tours antenna.
On the other hand, in the structure of the protection metalwork corresponding, because the half-wavelength that resonates is huge, so use the small tours antenna of coiled type with the coiled type plug-in unit of LF, HF band.With this small tours antenna of metalwork protection; but the magnetic sheet of high relative permeability is set between small tours antenna and protection metal, and formation makes the electromagnetic magnetic line of force of communication converge to the medium sheet and does not enter into the isolation structure of protection metal side or form kerf slots so that the protection metalwork does not produce vortex flow.
In patent documentation 3 disclosed protection metalworks, for the communication electromagnetic wave, with the frequency of LF as object; small tours antenna corresponding to coiled type; in UHF, microwave, electromagnetic wave can't be invaded along the gap of metal, so can't use this protection metalwork.
In addition; patent documentation 4, patent documentation 5 disclosed technology also are the relevant technology of protection with the IC chip self of HF; adopt the metal coating plate of the part corresponding with the small tours antenna of coiled type; according to this technology in order to improve mechanical protection intensity; not only cover the IC chip with the fender of metal but also cover plug-in unit when whole, exist because vortex flow and the problem that can't carry out communication.
And then patent documentation 6 disclosed technology relate to the protection of RFID label that plug-in unit has the antenna of half-wavelength, are difficult to guarantee broadband, and guard member is dielectric, and have problems in thermotolerance, metal processability.
Like this,, the realization gimmick of the protection metalwork that different RFID labels uses is arranged, thereby the kind of protection metalwork is increased according to frequency band as technology in the past.But, in technology in the past, protect structure, function or the size difference of metalwork according to frequency band, need prepare protection metalwork at each frequency band of RFID label.
On the other hand, along with the expansion of the purposes of metal displacer inserting RFID tags, the integrated RFID label of metallic object, require to use the multiple frequency band different according to purpose the RFIF label, the label installation dimension cost that is provided with common or the RFID label is reduced.In addition, according to viewpoints such as operation, management, maintenances, wishing also increases the demand that these RFID labels are arranged on identical in fact place or the identical parts.At such demand, if at each frequency band of RFID label, individually prepare the protection metalwork, then there is the cost aspect, the problem in space is set, there is problems such as lacking convenience in the application facet of RFID label.
Summary of the invention
The objective of the invention is to; a kind of RFID label that possesses that can jointly use at the wide band RFID label plug-in unit from LF to the microwave, electric and the protection metalwork that mechanicalness is good is provided, realizes the label manufacture view, the cost reduction of aspects such as operation, application and the raising of convenience are set.
Other purposes of the present invention are; provide a kind of possess can utilize a common corresponding different frequency of protection metalwork; and the RFID label of many plug-in units of the protection metalwork that electric and mechanicalness is good realizes that at label manufacture view and application facet cost reduces and the raising of convenience.
A representational example of the present invention is as described below.The invention provides a kind of RFID label, possess the RFID plug-in unit that is embedded in the protection metalwork, it is characterized in that having: the protection sheet metal; And be fixed on insulation course on this protection sheet metal, and wherein, above-mentioned protection sheet metal has at least one slit that extends along lengthwise direction, and this slit has the function of the vortex flow that prevention produces on the surface of above-mentioned protection sheet metal; Above-mentioned insulation course have above-mentioned slit in being formed at above-mentioned protection sheet metal under the position on keep the function of above-mentioned RFID plug-in unit; In this insulation course, can select the plug-in unit of RFID label that each frequency band of LF frequency band, HF frequency band, UHF frequency band and microwave band is taken on a ground.
According to the present invention, the RFID label that can provide a kind of metal pair that possesses the protection metalwork that can jointly use at the wide band RFID plug-in unit that takes microwave band from LF to answer.
According to other features of the present invention; the RFID label that metal pair is answered possesses the common broadband metal coating metalwork corresponding to the plug-in unit from LF to the microwave; can be in a label RFID plug-in unit of built-in multiple different frequency, just can realize the RFID communication so need not to install a plurality of labels by various reader/writers.
Description of drawings
Fig. 1 is the vertical view of the RFID label of protecting metalwork having of the 1st embodiment of the present invention.
Fig. 2 is the figure that the B-B ' section of Fig. 1 is shown.
Fig. 3 A illustrates RFID label expansion that protected metalwork having of Fig. 1 and the figure of the state that decomposes.
Fig. 3 B is the figure of relation of plug-in unit 4 that the RFID label of the frequency band that uses in the communication and present embodiment is shown.
Fig. 4 A is the figure that the plug-in unit at insulation course among explanation the 1st embodiment inserts.
Fig. 4 B illustrates RFID label with different frequency bands constitutes the rectangular parallelepiped of identical appearance size with plug-in unit the figure of example.
Fig. 5 be explanation can be at the plug-in unit dual-purpose of UHF, microwave band the figure of the reason of identical protection metalwork.
Fig. 6 explanation can be at the plug-in unit dual-purpose of the frequency of LF, HF band the figure of the reason of identical protection metalwork.
Fig. 7 A is the stereographic map that the outward appearance of the RFID label plug-in unit among the embodiment 3 is shown.
Fig. 7 B is the stereographic map that the structure example of the plug-in unit among the embodiment 3 is shown.
Fig. 8 A is the stereographic map that the outward appearance of the RFID label plug-in unit among the embodiment 4 is shown.
Fig. 8 B is the stereographic map that the outward appearance of protection metallic object among the embodiment 4, insulation course is shown.
Fig. 9 A is the stereographic map that the outward appearance of the insulation course among the embodiment 5 is shown.
Fig. 9 B is the figure that the longitudinal profile of Fig. 9 A is shown.
Figure 10 A is the stereographic map that the outward appearance of the insulation course among the embodiment 6 is shown.
Figure 10 B is the figure that the longitudinal profile of Figure 10 is shown.
Figure 11 A is the stereographic map that the outward appearance of the protection metallic object among the embodiment 7 is shown.
Figure 11 B is the vertical view that the structure of the protection metallic object among the embodiment 7 is shown.
Description of reference numerals
1: the protection sheet metal
1A: equivalent conductor plate
1S: equivalent non-conductive plate
2: the metal substrate of bottom
3: insulation course
The 4:RFID plug-in unit
5: linking part
6: screw
The 7:IC chip
8: small tours antenna
11: slit
31: the plug-in unit patchhole
41,42,43,44,45,46: plug-in unit
61,62,63: screw hole
81,82,83,84,85,86: small tours antenna
110,112: slit
115,116: the metal arm that does not have slit
117,118: the metal arm that has slit
400,410,420,430,440: plug-in unit
710,720,730,740,750,760,770,780,790,795:IC chip
810,820,830,840,850,860,870,880,890,895: small tours antenna
λ g: the wavelength in the medium
λ o: the wavelength in the vacuum
I: high-frequency current
IZ: vortex flow
Du: in the size of the frequency low-resonance of UHF
W: in the size of the frequency low-resonance of microwave
Dm: in the size of the frequency low-resonance of microwave
D: the metal arm that has slit
Φ 1: the magnetic line of force of high frequency
Φ 2: the magnetic line of force of high frequency
Φ 3: the magnetic line of force of high frequency
Gap: the gap between the front end of relative a pair of arm
G: protection metallic object total length
Embodiment
Below, with reference to accompanying drawing, the RFID label that protected metalwork having of embodiments of the present invention is elaborated.
[embodiment 1]
By Fig. 1～Fig. 6, the 1st embodiment of the present invention is described.
Fig. 1 is the vertical view of the RFID label of protecting metalwork having of the 1st embodiment of the present invention, and Fig. 2 illustrates the B-B ' section of Fig. 1.In addition, Fig. 3 A illustrates and will have the state of the RFID label expansion decomposition of protecting metalwork.Having the RFID label of protecting metalwork becomes the 3-tier architecture of the insulation course 3 of the metal substrate 2 of the protection sheet metal 1 on top layer, bottom, centre.Protect sheet metal 1 to have and on the length direction of this sheet metal, run parallel to its one or more slit 11 midway.In slit 11, be provided with the insulating space that utilizes air or utilize the insulation course of filling of insulating material etc. or dielectric film (below, abbreviate them as insulation and coat).In other words, as long as the width of slit 11 has the insulation of thickness of the insulation resistance of the degree that can stop vortex flow to coat.The below of the length direction of protection sheet metal 1 partly becomes the plate member of the continuous one that does not have slit, thereby it is messy can not become.As shown in Figure 3A, protection sheet metal 1, insulation course 3 and metal substrate 2 have screw hole 61,62,63 respectively, are fixed on the metal object that should install by the RFID label of screw 6 with this 3-tier architecture.In the insulation course 3 of centre, the position under the slit 11 of the zone of upside in the central and protection sheet metal 1 is provided with the plug-in unit patchhole 31 that is used to take in RFID plug-in unit 4.The flat shape of plug-in unit patchhole 31 and RFID plug-in unit 4 can be rectangle, trapezoidal, rectangle and circular combination or other shapes.In addition, Fig. 2, Fig. 3 A, Fig. 4 A etc. show the example of the implementation method of linking part 5.Linking part 5 has the effect that improves the pillar that prevents charged ground structure and physical strength that is mainly used in, and protection sheet metal 1 is connected by the linking part 5 that is made of thin metal parts with metal substrate 2.But, can omit under the situation of charged, physical strength not needing to prevent.In addition, can also replace ground structure with metal screw 6.
The structure of the protection metalwork of present embodiment is; in the part of protection metallic object 1; be formed with the metal arm that has slit (with reference to Fig. 1) of having cut one or more slit 11; but in other parts that do not comprise slit of protection metallic object 1; so that slit, mode that arm is not messy are tied; and in order to keep physical strength, perhaps the resonance effect partly in order also to be also used as the antenna in UHF, the microwave band preferably is made of incorporate metal parts.This protection metalwork has from the function of the plug-in unit of machinery and electrical impact protection inside, and as described later, has and can take in the function of wide band multiple RFID label with plug-in unit.
The protection metalwork 1 of present embodiment is to protect the metalwork of this plug-in unit by RFID plug-in unit 4 being accommodated under the metal arm that has slit from machinery and electrical impact, has the broadband character that can move in any one frequency band of microwave band at LF.Under the metal arm that plug-in unit 4 protection is being had slit 11 time, it is contained in the middle layer 3 that is made of the insulator that holds this plug-in unit 4.
In addition, the RFID label directly being fixed under the situation of metal parts, can also omit metal substrate 2.In addition, also can use other fixed bonding means, for example replace screw 6 and use bond that the RFID label is fixed to metal parts etc.Prevent under the situation of charged electrical grounding and physical strength in the situation of omitting metal substrate 2 and raising, need be equivalent to connect the parts of the thin linking part 5 of protecting metalwork 1 and metal parts.
The plug-in unit 4 of the form fit in insertion and hole in plug-in unit patchhole 31.Plug-in unit 4 be with from LF up to microwave and then up to the corresponding multiple RFID label plug-in unit of the broadband of millimeter wave, be easy to be embedded in the patchhole 31 in order to make them, preferably be unified into identical in fact physical dimension.
Fig. 3 B illustrates the relation of plug-in unit 4 of the RFID label of the frequency band that uses in the communication and present embodiment.In the example of Fig. 3 B,, LF plug-in unit 45, HF plug-in unit 43, UHF plug-in unit 42 and microwave plug-in unit 41 these 4 kinds of plug-in units 4 of illustrating among Fig. 4 B have been prepared as an example of plug-in unit 4.
In addition, can also change physical dimension by the kind of unified plug-in unit according to purposes.For example, at the plug-in unit of the RFID label that can also be applicable to two kinds of unified sizes.In this case, if shown in " example 1 of shared classification ", as frequency high relatively " the 1st frequency band group ", will be from millimeter wave to microwave, the frequency band of UHF and VHF is made as a group, as frequency low relatively " the 2nd frequency band group ", the frequency band of HF to LF is made as another group, and then 4 kinds of plug-in units 4 of Zhun Beiing roughly are divided into these two groups of the 1st and the 2nd frequency band groups as a whole.
In addition, as described in later explanation,, the type of plug-in unit 4 roughly is distinguished into two frequency band groups, but more preferably according to the shape of antenna, the type area of plug-in unit 4 is divided into above-mentioned two different frequency band groups according to the shape that is accommodated in the antenna of protection in the metalwork.Promptly, also can be shown in " example 2 of shared classification ", according to the shape of antenna, the relative low and operating principle of " the bar antenna frequency band " of the electromagenetic wave radiation of the intensity that high relatively and operating principle is inversely proportional to based on so-called and distance by frequency and frequency based on so-called and distance square or " the coil antenna frequency band " of the electromagenetic wave radiation of the intensity that is inversely proportional to of cube constitute two groups.
In other words, the border in two zones in " example 1 of shared classification " shown in Fig. 3 B and " example 2 of shared classification " is based on identical in fact thought, the differentiation of LF/HF in the following description band and UHF/ microwave band only otherwise special definition just can be replaced as " coil antenna frequency band " and " bar antenna frequency band ".But in order to realize miniaturization, the antenna pattern of plug-in unit for example is 1 to 2 time the small coiled type of reeling, but is classified into the 1st frequency band group in the plug-in unit of UHF, microwave band.Therefore, in order to distinguish, the small coiled type antenna package of UHF/ microwave band is contained in the bar antenna frequency band and describes with the coiled type antenna of LF/HF band.
Be in the based antenna with the coil, using the magnetic line of force that produces around the high-frequency current of coil and become main body based on the communication of the electromagenetic wave radiation in its magnetic field.And in bar-shaped antenna, its metal bar axially on the standing wave of the electric current that flows through and the half-wavelength that produces in end reflections and the current interference returned in the electromagnetic field of metal bar near surface to outside space radiation electromagnetic wave.
Next, use Fig. 4 A, Fig. 4 B, be described in further detail for LF being accommodated in the common protection metalwork to the plug-in unit of the wide band RFID label of microwave and use and required necessary condition.
At first, Fig. 4 A (A) is the stereographic map that the outward appearance of protection sheet metal 1, middle insulation course 3 and metal substrate 2 is shown.When the center line with the length direction of insulation course 3 was made as A-A ', slit 11 was parallel with A-A '.In addition, a slit 11 is set at least.In addition, in the present invention, length protection sheet metal 1, near the A-A ' direction of its front end till the fixed position that utilizes realizations such as screw (top of screw hole 61) is defined as the metal arm that has slit.In addition, metal parts 5 is embedded into the embedding recess of the two sides of insulation course 3, and its front end face joins with protection sheet metal 1.
Next, in Fig. 4 A (B), (C), as plug-in unit 4, show UHF with plug-in unit or microwave with the plug-in unit of the relative plug-in unit patchhole 31 of plug-in unit insert towards.The plug-in unit 4 of Fig. 4 A (B) is made of with small tours antenna 8 IC chip 7 and microwave as one of coil antenna, and plug-in unit 4 (C) constitutes by IC chip 7 and as the small dipole antenna 8 of one of bar antenna.Preferably with plug-in unit 4 hold towards being arranged to, make the upper surface or the lower surface quadrature in the relative middle layer of anchor ring (insulation course) of coil antenna that plug-in unit has or small tours antenna, make the IC portion 7 of plug-in unit not touch metal covering up and down at least.In addition, preferably avoid as far as possible slit 11 under dispose IC portion 7.
In addition; make the anchor ring of small tours antenna 8 and the upper surface or the lower surface quadrature of metalwork; promptly; make the direction of A-A ' of (B) consistent with the A-A ' of Fig. 4 A (A); advance so that small tours antenna 8 be positioned at protection sheet metal 1 slit 11 under, thereby plug-in unit 4 is set in the patchhole 31 in the insulation course 3.
Under the situation of small dipole antenna 8, make the direction of A-A ' of (C) consistent, and then make antenna surface parallel, thereby plug-in unit 4 is set in the patchhole 31 in the insulation course 3 with the upper surface or the lower surface of metalwork with the A-A ' of Fig. 4 A (A).
Like this, under the situation of the plug-in unit of UHF, microwave, in the method to set up of the small dipole antenna that plug-in unit has, small tours antenna, it is 1/4th or 1/10th size at most that its size is compared with wavelength, and comparing with the dipole antenna of half-wavelength size becomes low-down sensitivity.Therefore, need with the metal arm electromagnetic coupled of the size that in UHF, microwave, resonates, and this plug-in unit has under the situation of small tours antenna, for metal arm electromagnetic coupled relatively, small tours antenna is arranged to parallel with metal arm.Perhaps, for arm axially on electromagnetic coupled, so that do not have the small dipole antenna of small tours antenna or the bar antenna of the size about quarter-wave does not contact with the metal part of metal arm or the metal part of bottom, and be arranged to parallel with metal arm.
Under the situation of LF, HF, in the method to set up of the coil antenna that plug-in unit has, small tours antenna, since operating principle be with from the distance of small tours antenna square or the intensity that is inversely proportional to of cube, for example from the electromagnetic radiation of static magnetic field, even so the antenna of reader/writer towards with anchor ring present towards inconsistent, also hardly sensitivity is impacted.Therefore, under the situation of LF, HF, can be the upper surface or the lower surface quadrature in relative middle layer (insulation course), in be arrangeding in parallel any one.But if make plug-in unit aim at plane of polarization abreast with the antenna surface of reader/writer, sensitivity improves certainly.
In addition, LF is being arranged under the situation in middle layer 3 to the plug-in unit 4 of some frequency bands of microwave, preferably the IC part 7 of plug-in unit is being configured near roughly inner (centre of upper surface and lower surface) in middle layer 3 in the mode that does not touch nearest metal part.
One of feature of present embodiment is, in order to make the RFID label that should embed with plug-in unit 4 all shared protection metalwork in any frequency band, works and be accommodated in the unified same plug-in unit patchhole 31.
Fig. 4 B illustrates the example that the RFID label of different frequency bands is constituted the rectangular parallelepiped of identical appearance size with plug-in unit.(A) of Fig. 4 B is microwave with the stereographic map of plug-in unit, and the laminal small dipole antenna 81 that will be connected with IC chip 71 becomes rectangular-shaped plug-in unit 41 at the roughly inner mold of insulating material.(B) be UHF with the stereographic map of plug-in unit, the small tours antenna 82 of the thin plate band shape that will be connected with IC chip 72 becomes rectangular-shaped plug-in unit 42 at the roughly inner mold of insulating material.(C) be HF with the stereographic map of plug-in unit, in the example up, will be connected with IC chip 73 and the coil 83 of the multi-turn that is provided with abreast with the upper surface or the lower surface of metalwork becomes rectangular-shaped plug-in unit 43 at the roughly inner mold of insulating material.Below example in, will be connected with IC chip 74 and with the direction of the upper surface of metalwork or lower surface quadrature on the coil 84 of the multi-turn that is provided with at the roughly inner mold of insulating material and become rectangular-shaped plug-in unit 43.(D) be LF with the stereographic map of plug-in unit, in the example up, will be connected with IC chip 75 and the coil 85 of the multi-turn that is provided with abreast with the upper surface or the lower surface of metalwork becomes rectangular-shaped plug-in unit 45 at the roughly inner mold of insulating material.Below example in, will be connected with IC chip 76 and with the direction of the upper surface of metalwork or lower surface quadrature on the coil 86 of the multi-turn that is provided with at the roughly inner mold of insulating material and become rectangular-shaped plug-in unit 46.In addition, the three-dimensional shape of plug-in unit 46 is corresponding to the flat shape of plug-in unit patchhole, becomes rectangular-shapedly under the situation of rectangle, under the trapezoidal situation that waits other shapes, becomes corresponding respectively three-dimensional shape certainly.
Like this; by becoming antenna pattern according to frequency band and the different but plug-in unit 4 that profile is unified; and with its be configured in protection sheet metal 1 slit 11 under, under low frequency, make electromagnetic wave see through the slit 11 of metal arm of protection metalwork, and can be from plug-in unit 4 directly to outside radiated electromagnetic wave.Under high frequency, the arm of metal at least of protection metalwork promotes resonance.Thus, can provide and to protect metalwork to the shared broadband of the plug-in unit of LF to UHF or microwave.
Next, use Fig. 5, Fig. 6, detailed description can be at the reason of wide band multiple RFID label with the identical protection metalwork of plug-in unit dual-purpose.
At first, use Fig. 5, the situation that the plug-in unit with UHF, microwave band is installed in the protection metalwork describes.(A) of Fig. 5 is the longitudinal diagram of RFID label with plug-in unit, (B) is the stereographic map of RFID label with plug-in unit.The distribution of the high-frequency current i on protection metalwork surface (C) is shown in addition.In protection metallic object 1 for example pectination ground alternate configurations slit, be that insulation such as insulating space or dielectric film coat and integrated, obtain the RFID label of protecting metalwork having of present embodiment.High-frequency current i and slit 11 almost parallel ground flow through, perhaps the electric current that distributes as the electromagnetic wave resonance mode that produces according to the metal surface towards, crosscut slit 11 flows through like that.That is, the insulation resistance of slit does not hinder the stream of high-frequency current i.Like this, the metal arm of a plurality of pectinations is under very high frequency such as UHF, microwave band, the slit-shaped insulation that is clipped by the metal arm of pectination coats and becomes low-down impedance, the high-frequency current i of the surface distributed of the metal arm of these pectinations on one side electromagnetic coupled on one side continuous stream cross the slit-shaped insulation and coat.That is, shown in Fig. 5 (E), when under high frequency, observing metal arm surperficial of these pectinations, seem just as incorporate equivalent conductor plate 1A.In other words, can't see slit from the reader of outside.
Like this, the sheet metal of adjacent pectination is because very high frequency and mutual electromagnetic coupling, the insulation of slit 11 coats becomes low-down impedance, and slit partly presents electric conductivity and is easy to flow through high-frequency current, and can carry out with high-frequency circuit in the equal processing of conductor.
And then, the metal arm that is regarded as conductor can be promoted resonance as the antenna under the high frequency.For example the size (axially) of the length by will protecting sheet metal is chosen as the dimension D u at the frequency low-resonance of UHF frequency band; size (Width) W that lacks, the size (size of the plate member of the one of the below of the screw hole 61 of=protection sheet metal 1) that has the metal arm of slit are chosen as the dimension D m at the microwave low-resonance, can in UHF and microwave, realize high sensitivity.(D) of Fig. 5 illustrates the high-frequency current i on protection metalwork surface and the relation of magnetic line of force Φ.The size at each position by will protecting metallic object 1 is made as the size of the resonance that promotes UHF, microwave, and protection metallic object 1 becomes the antenna dual-purpose metalwork of electromagenetic wave radiation efficient height and protection IC chip 7 in UHF, microwave band at least.
Degree for the electromagnetic coupled of the metal arm of above-mentioned pectination, according to the high-frequency circuit theory, clipping that insulation coats and the structure of opposite metal plates can be considered the structural equivalents with the capacitor of electric component, can be by with the benchmark of impedance Z as the resistance of high-frequency current, and handle quantitatively.Herein, Z is known Z=1/ (2 π fC) (ohm), changes according to f, C.Herein, π represents circular constant, and f represents the frequency of high frequency, and C represents the electric electric capacity that insulation that the metal arm by pectination clips coats.If the frequency ratio of LF or HF and UHF or microwave reach 10 square to five powers, then with its together Z change one of percentage to 100,000/.
In the present invention, even set the impedance Z of the high resistance of the high-frequency current i that stops LF or HF for, in UHF or microwave, also impedance Z (resistance value) can be considered as one of percentage following, roughly 0.That is, the metal arm that is conceived to pectination can not stop high-frequency current i and make it flow through this point.Like this, the surface that comprises the metal arm that has slit that the insulation of air coats becomes high impedance under low frequency, vortex flow is flow through and electromagnetic wave is seen through, become Low ESR under high frequency, high-frequency current i can not be prevented from and flow through the metal arm surface that has slit.Therefore, realized the size of this arm self is made as the wide band protection metalwork of the size of the antenna that promotes resonance.
Next, use Fig. 6, the situation that the plug-in unit with the frequency of LF, HF band is installed in the protection metalwork describes.(A) of Fig. 6 is the longitudinal diagram of RFID label with plug-in unit, (C) is the stereographic map of RFID label with plug-in unit.In addition, (B) show the B-B ' section of (C).Shown in (B), (C), in the closed loop of the magnetic line of force of high frequency, magnetic line of force Φ 1, Φ 2 are by the slit 11 of protection metallic object 1.This magnetic line of force Φ 1, Φ 2 invade the RFID label with the inside of plug-in unit, intersect with the coil of the coil antenna 8 of plug-in unit inside and interact.In addition, these magnetic lines of force Φ 1, Φ 2 interact with the antenna of reader/writer.
At first, under the situation of the low frequency that LF, HF are with, hope to the communication electromagnetic wave of the metal surface that has slit of wanting to incide arm, be to flow through vortex flow on the magnetic line of force Φ 1 of high frequency, the direction that Φ 2 reflects, but, the insulation of slit 11 parts stops vortex flow because coating, so its as a result the communication electromagnetic wave do not reflect and see through, in the coil antenna 8 of the plug-in unit of inside, flow through and the corresponding induction current of the electromagnetic intensity of communication.
On the other hand, in the lower area of the metal surface that does not form slit 11, the magnetic line of force Φ 3 that wants to enter the surface owing to vortex flow iZ is reflected, forms the closed loop of the inside that does not enter into RFID label usefulness plug-in unit in the metal surface.That is, owing to there is not slit,,, do not produce interaction with coil antenna 8 so magnetic line of force Φ 3 is reflected in the metal surface so vortex flow iZ flows through inversely stoping the perforation of magnetic line of force Φ 3.Equivalently, slit 11 becomes the insulator of the magnetic line of force perforation of high frequency, but metal surface in addition still is a conductor.
Like this, under low frequencies such as LF, HF band, the insulation that the communication electromagnetic wave sees through slit 11 coats, so shown in Fig. 6 (D), the zone that slit is arranged can be considered as just as the magnetic line of force Φ 1 of incorporate high frequency and the equivalent non-conductive plate 1S of Φ 2 perforations.
As mentioned above, in the present embodiment, the performance of protection metalwork has the two faced function low or high and opposite according to frequency.That is, the metal arm structure that has slit has becomes equivalent non-conductive plate 1S (Fig. 6 (D)) under low frequency, becomes the so opposite two faced character of equivalent conductor plate 1A (Fig. 5 (E)) under high frequency.Therefore; can provide following broadband protection metalwork: by under the slit of the metal arm structure that has slit, plug-in unit 4 being set; under low frequency, make electromagnetic wave see through the protection metalwork, under high frequency, make electromagnetic wave and arm electromagnetic coupled and resonate, thereby can obtain high sensitivity.
And then; following protection metalwork can be provided: plug-in unit does not expose and is covered by metal; so can be at physical strength, static, surge current etc., keep the high protective value of inner IC part, can jointly use to the plug-in unit of the wide band RFID label of microwave for LF simultaneously.
Like this; for example pectination that obtain has the metal arm of slit to the metallic object that protection metalwork utilization in the embodiments of the invention 1 will be made of more than one metal bar or sheet metal across insulation coating alternate configurations is also integrated; wherein; at LF; under the low frequencies such as HF band; the insulation of this arm coats and stops vortex flow; the communication electromagnetic wave sees through insulation and coats; promptly when observing this arm with this electromagnetic wave; can be considered just as incorporate insulator; this arm has the following two faced character low or high and opposite according to frequency: at UHF; under the very high frequency such as microwave band; the slit-shaped insulation of arm metal coats and becomes low-down impedance; crossing the slit-shaped insulation in electromagnetic coupled one side, high-frequency current one side of this arm surface distributed continuous stream coats; promptly; under high frequency, observe when having the metal arm of slit, can be considered just as incorporate conductor.
In addition; in the protection metalwork of wide band RFID plug-in unit of the present invention; be accommodated in inner important IC chip part in order to protect forcefully from electrical impact such as mechanical external force and welding current, static and thermal shock, the material of protection metallic object (protection metallic object 1) is preferably cutting, bending machining is convenient and the metal material that can allocate with the cost of cheapness.The selection of metal material is convenient to make the protection metalwork to be also used as antenna or is formed continuously.As the conductor of handling under high-frequency current, the voltage condition, consider nonmetal and present electric conductivity carbon, comprise the inorganic or organic material of the solid of abundant ion.So long as possess the nonmetallic materials of cheapness and low conductivity and good characteristics such as machinability, thermotolerance, then also it can be replaced metal material and use.
[embodiment 2]
Next, the 2nd embodiment of the present invention is described.
In the protection metalwork of antenna of the present invention, in the communication electromagnetic wave of LF, HF, the insulation characterisitic of the slit of metal arm that can be by having slit deposits into electromagnetic seeing through.In addition, in the communication electromagnetic wave of UHF, microwave band,, resonated in the long limit of metalwork in the communication electromagnetic wave of UHF, minor face is resonated in microwave, and improve sensitivity for the size of antenna structure.Can become so common protection metalwork.
According to the 2nd embodiment of the present invention, set the axial physical dimension of protection metallic object 1 for the size of dipole antenna or the size of electromagnetic wave resonance mode.
For example, the physical dimension among Fig. 5 is being made as Du, in the time of will being made as Dm from the length of the fastening fixed position of screw till the front end of protecting metallic object 1, by Du, Dm being set for the relation of following formula, the sensitivity that can improve antenna.
In addition, in the UHF ripple,
Wavelength in the vacuum of λ u:UHF ripple, ε r: form the relative dielectric constant of the medium of insulator, μ r: the relative permeability that forms the medium of insulator.
As the TM basic model of one of electromagnetic wave resonance mode the time,
Wherein, the 1.841st, the least root of the derived function of first kind Bezier (Bessel) function
λ m: the wavelength in the vacuum of microwave
In addition, in the time will being made as W, if W is chosen as the microwave resonance size, for example uses with the width on the axial rectangular direction of protecting metallic object 1
Dipole size that provides or usefulness
The electromagnetic wave resonance mode size (TM11 pattern) that provides is then further effective on sensitivity improves.
On the other hand, in the communication electromagnetic wave of LF/HF band, do not protect the resonance in the metalwork, be difficult to improve sensitivity by the optimization of physical dimension.But the number of slit of metal arm that has slit is many more, and slit width is wide more, is easy to promote electromagnetic seeing through more, so can improve the efficient of electromagenetic wave radiation from this viewpoint.On the contrary, physical strength reduces.Therefore, when practicability, the consideration both sides decide and get final product.
[embodiment 3]
In embodiment 1,2, select a ground and will be arranged on inserting in the hole and realized sharing in the insulation course with LF some to the corresponding a plurality of RFID label plug-in units of the broadband of microwave.With respect to this; also can in insulation course, select two kinds of antennas simultaneously; promptly from " the 1st frequency band group " and " the 2nd frequency band group " of " example 1 of shared classification " shown in Fig. 3 B, select an antenna respectively or from " the bar antenna frequency band " and " coil antenna frequency band " of " example 2 of shared classification ", select an antenna respectively, and the plug-in unit of these two kinds of antennas is accommodated in the protection metalwork simultaneously.
As the 3rd embodiment of the present invention, use Fig. 7 A～Fig. 7 B, the plug-in unit with above-mentioned two kinds of antennas is accommodated in a structure in the protection metalwork simultaneously describes.
Fig. 7 A is the stereographic map that the outward appearance of RFID label plug-in unit is shown.Protection metallic object 1 is formed with a slit 110 in central authorities.Different with the 1st embodiment, the following quadrate part of protection metallic object 1 is crooked and integrated with metal substrate 2.Plug-in unit is set at inserting in the hole in the insulation course 3.Fig. 7 B illustrates and two kinds of for example stereographic maps of the structure example of compound plug-in unit 400 that antenna is corresponding, for example, the antenna 810 that will have a LF/HF band is with the plug-in unit 410 of IC chip 710 and have the antenna 820 of UHF/ microwave band and the plug-in unit 420 of IC chip 720, for fear of interference and quadrature and leave and be arranged under the state of configuration, and in mediums such as resin material, be formed integrally as for example three-dimensional plug-in unit 4 at the antenna anchor ring of two antennas.Perhaps, the plug-in unit 440 that will have the plug-in unit 430 of some antennas 830 and IC chip 730 in the LF/HF band and have some antennas 840 and IC chip 740 in the UHF/ microwave band, at the antenna anchor ring quadrature of two antennas and be configured under the locational state of intersection and be arranged to one, and in mediums such as resin material, be formed integrally as for example three-dimensional plug-in unit 400.The compound plug-in unit 400 that forms like this is arranged on as insulation course 3 metal arm that has slit under.In addition, the position of the direction of slit and each antenna, towards relation etc. identical with the embodiment of front.
If the length D that will protect the axial length D of sheet metal 1, promptly has a metal arm of slit is made as the size with the frequency resonance of UHF that will insert or microwave band, then obtain high sensitivity for the UHF/ microwave band.
In addition, also can be with the some antennas in the LF/HF band and the both sides' of UHF/ microwave band antenna, promptly three antennas are arranged to one and formation plug-in unit 400.
In addition, also can replace integrally formed and above-mentioned two kinds of plug-in units that antenna is corresponding, and insulation (medium) layer patchhole is set in 3 and be provided with at the same time two with two kinds of plug-in units that antenna is corresponding.
[embodiment 4]
Next, as the 4th embodiment of the present invention,, describe being accommodated in a structure in the protection metalwork corresponding to the compound plug-in unit of at least two kinds of antennas of UHF/ microwave band and LF/HF band with reference to Fig. 8 A～Fig. 8 B.
Fig. 8 A is the stereographic map that the outward appearance of RFID label plug-in unit is shown.(A) of Fig. 8 B is the stereographic map that illustrates with the outward appearance of the metal substrate 2 incorporate protection metallic objects 1 at the end, (B) is the stereographic map of the outward appearance of insulation (medium) layer 3 of having adorned plug-in unit in illustrating.Different with the 1st embodiment, the side of protection metallic object 1 extends downwards, and then crooked to the inside and integrated with metal substrate 2.In the central authorities of protection metallic object 1, for example by getting through the slit 112 that forms a H font.In this example, one has constituted and the corresponding compound plug-in unit of above-mentioned two kinds of antennas in insulation course 3.
The slit 112 of H font has the effect that stops vortex flow at the plug-in unit of LF/HF band.In protection metallic object 1,, be formed with relative a pair of arm by the slit 112 of H font.Different with embodiment 3 and form the metal arm that has slit in the inside of metal flat, be formed with the slit that becomes H font pattern around 1 pair of arm.The physical dimension of the total length of decision protection metallic object 1 is made as size with the electromagnetic wavelength resonances of UHF/ microwave band.That is, for the length of the slit of H font, the wavelength in the medium is made as λ g, with air in or wavelength in the vacuum when being made as λ o, the length of arm is respectively up and down λ g/4 roughly from central authorities vertically, the overall length of protection metallic object 1 is λ o/2 roughly.
By the way,
Shown in Fig. 8 B (B), the chip 750 of LF/HF band and the chip 760 and antenna 860 of antenna 850, UHF/ microwave band in medium, have been disposed up and down overlappingly.The front end of relative a pair of arm closely is configured to discontiguous distance, with the electromagnetic wave to medium internal feed UHF/ microwave band.That is, if the gap between the front end of a pair of arm is made as Gap, then Gap become the width of the resonance that does not hinder the UHF/ microwave band, in other words about general λ g/20.If Gap is bigger, then the intensity at physical shock reduces, if narrower, then the sensitivity of the electromagnetic communication of LF/HF band reduces, owing to be in such relation, so decide the size of Gap to get final product according to application target.
In addition, when filling the electromagnetic plug-in unit of UHF/ microwave band in the mediums 3 such as being sealing into resinous wood, if it is not contacted with betal can, then not only can improve sensitivity, and can protect plug-in unit not to be corroded for the immersion of moisture.
[embodiment 5]
Next, as the 5th embodiment of the present invention,, the compound plug-in unit one corresponding with at least two kinds of antennas of UHF/ microwave band and LF/HF band constituted and this plug-in unit is accommodated in other structure example in the protection metalwork describe with reference to Fig. 9 A～Fig. 9 B.In addition, in the present embodiment, use shown in the embodiment 4 with metal substrate 2 incorporate protection metallic objects 1, only the structure difference of the plug-in unit of insulation (medium) layer 3.
Shown in Fig. 9 A～Fig. 9 B, overlapping mode with from top observe the time has disposed the chip 780 of LF/HF band and the chip 770 and antenna 870 of antenna 880, UHF/ microwave band with leaving up and down in medium 3.That is, the antenna 870 of UHF/ microwave band forms the shape with step, on the part of its low level, has disposed the chip 780 and antenna 880 of LF/HF band.
[embodiment 6]
Next; as the 6th embodiment of the present invention; with reference to Figure 10 A～Figure 10 B, the compound plug-in unit corresponding with at least two kinds of antennas of UHF/ microwave band and LF/HF band constituted by one and this plug-in unit is housed in other structure example in the protection metalwork describe.In addition, in the present embodiment, used shown in the embodiment 4 with metal substrate 2 incorporate protection metallic objects 1, only the structure difference of insulation (medium) layer 3 plug-in unit.
Shown in Figure 10 A, the chip 795 of LF/HF band and the chip 790 and antenna 890 of antenna 895, UHF/ microwave band have been disposed with in medium 3, leaving in the axial direction.That is, the antenna of UHF/ microwave band separates with LF/HF band antenna, and along axis A-A ' configuration.
[embodiment 7]
Next, with reference to Figure 11 A～11B, the 7th embodiment of the present invention is described.Figure 11 A is the stereographic map of RFID label, Figure 11 B be the position of taking in a plurality of plug-in units is shown, be the figure of each plug-in unit patchhole 41,42,43,45 (frame of broken lines of the rectangle among the figure).
In the present embodiment, be configured in corresponding wide band protection metalwork 1 under insulation (medium) layer 3 have the position of taking in of a plurality of RFID plug-in units.In the wide band protection metallic object 1 of correspondence, the various metal arms corresponding have been prepared with the RFID plug-in unit of each frequency band.The plug-in unit 43,45 of LF, HF band be arranged on the metal arm 117 that has slit and 118 under plug-in unit patchhole 31 in, in the plug-in unit 41,42 of UHF, microwave band, in order to obtain the electromagnetic communication path that does not produce vortex flow, make the slit that is used to arm is resonated at the periphery of arm and get final product, and need not to make slit from one's body at arm.Therefore, the plug-in unit of UHF, microwave band is arranged in the plug-in unit patchhole 31 under the metal arm 115 and 116 that does not have slit.For arm 115, the time to be made as unipole antenna long being used for the UHF band for length Du, and for arm 116, length Dm is made as unipole antenna when being used for microwave band long, these arms is made as the length that promotion is resonated in order to improve sensitivity.By the way, unipole antenna since can for dipole antenna roughly half, so help the miniaturization of RFID label.In addition, G is made as the total length of the length direction of protection metallic object 1.
On the other hand, about the arm 117 corresponding, be with corresponding arm 118, under their communication frequency, be difficult to realize protecting the resonance in the metalwork, can freely change physical dimension according to application target with HF with LF band.Mainly has the function of mechanically protecting plug-in unit.But slit width is wide more, is easy to promote electromagnetic seeing through more, so can improve sensitivity from this viewpoint.
By above configuration, take in the position at each corresponding with each arm, put into the RFID plug-in unit of the expectation of LF, HF, UHF or microwave band, the RFID plug-in unit plays a role respectively under frequency separately independently.
Claims (14)
1. a RFID label possesses the RFID plug-in unit that is embedded in the protection metalwork, it is characterized in that having:
The protection sheet metal; And
Be fixed on the insulation course on this protection sheet metal,
Wherein, above-mentioned protection sheet metal has at least one slit that extends along lengthwise direction, and this slit has the function of prevention in the vortex flow of the surface of above-mentioned protection sheet metal generation;
Above-mentioned insulation course have above-mentioned slit in being formed at above-mentioned protection sheet metal under the position on keep the function of above-mentioned RFID plug-in unit;
In this insulation course, can select the plug-in unit of RFID label that each frequency band of LF frequency band, HF frequency band, UHF frequency band and microwave band is taken on a ground.
2. RFID label according to claim 1 is characterized in that,
Above-mentioned protection sheet metal to the fixed position to above-mentioned insulation course, is formed with the metal arm that has slit from its front end;
This slit has a part of pectination ground separation that makes above-mentioned protection sheet metal and makes insulation coat the structure that enters;
Above-mentioned insulation course possesses a plug-in unit patchhole taking in above-mentioned plug-in unit under the above-mentioned metal arm that has a slit.
3. RFID label according to claim 1 is characterized in that,
Constitute the identical in fact size of profile with the plug-in unit of the corresponding RFID label of each frequency band of above-mentioned LF frequency band, HF frequency band, UHF frequency band and microwave band.
4. RFID label according to claim 3 is characterized in that,
Make the anchor ring of small tours antenna of plug-in unit of the RFID label that constitutes above-mentioned UHF frequency band and the upper surface or the lower surface quadrature of above-mentioned protection metalwork; and then; make above-mentioned small tours antenna be positioned at above-mentioned slit under, thereby above-mentioned plug-in unit is arranged on inserting in the hole of above-mentioned insulation course.
5. RFID label according to claim 3 is characterized in that,
Make the RFID label that constitutes above-mentioned microwave band plug-in unit small dipole antenna axially and above-mentioned protection metalwork axial consistent, thereby above-mentioned plug-in unit is arranged on inserting in the hole in the above-mentioned insulation course.
6. RFID label according to claim 1 is characterized in that,
Above-mentioned protection sheet metal has a plurality of above-mentioned slits, forms with above-mentioned length direction almost parallel ground and forms the metal arm that has slit of a plurality of incisions by this slit, and make them integrated;
Above-mentioned insulation course have be arranged on the protection sheet metal that is formed with the above-mentioned metal arm that has a slit under locational plug-in unit patchhole.
7. RFID label according to claim 6 is characterized in that,
Above-mentioned protection sheet metal have following according to frequency height and opposite two faced character:
Under low frequencies such as LF, HF band, the insulation of the slit-shaped of the above-mentioned metal arm that has a slit coats and stops vortex flow, and the communication electromagnetic wave sees through insulation and coats, thereby when observing this arm with this electromagnetic wave, can be considered just as incorporate insulator;
Under very high frequency such as UHF, microwave band, the insulation of the slit-shaped of above-mentioned metal arm coats becomes low-down impedance, the high-frequency current of the surface distributed of above-mentioned metal arm on one side electromagnetic coupled on one side continuous stream cross slit, when observing this metal arm that has slit with high frequency, can be considered just as incorporate conductor.
8. RFID label according to claim 6 is characterized in that,
Above-mentioned protection sheet metal has as the function that can protect metalwork to the broadband that each frequency of protection metalwork is jointly used;
In the communication electromagnetic wave of LF, HF, promote electromagnetic seeing through by the above-mentioned insulation characterisitic that has the metal arm of slit;
In the communication electromagnetic wave of UHF, microwave band, resonated in the communication electromagnetic wave of UHF in the long limit of this protection sheet metal, the minor face of this protection sheet metal is resonated in microwave.
9. a RFID label possesses the RFID plug-in unit that is embedded in the protection metalwork, it is characterized in that having:
The protection sheet metal; And
Be fixed on the insulation course on this protection sheet metal,
Wherein, above-mentioned protection sheet metal has at least one slit that extends along lengthwise direction, and this slit has the function of prevention in the vortex flow of the surface of above-mentioned protection sheet metal generation;
Above-mentioned insulation course have be formed at the above-mentioned slit of protection in the sheet metal under the position on keep the function of above-mentioned RFID plug-in unit;
This insulation course constitutes these two kinds of plug-in units in the RFID plug-in unit of in the RFID plug-in unit of taking in UHF or microwave band simultaneously and LF or HF band.
10. RFID label according to claim 9 is characterized in that, above-mentioned insulation course is following compound plug-in unit:
For fear of with LF or HF band in the corresponding plug-in unit of some antennas and with the mutual interference and reduce the function of above-mentioned antenna mutually of the corresponding plug-in unit of some antennas in UHF or the microwave band, make the antenna surface quadrature of this antenna, and this antenna is embedded in this insulation course with the state that leaves configuration.
11. RFID label according to claim 9 is characterized in that, above-mentioned insulation course is following compound plug-in unit:
For fear of with LF or HF band in the corresponding plug-in unit of some antennas and with the mutual interference and reduce the function of above-mentioned antenna mutually of the corresponding plug-in unit of some antennas in UHF or the microwave band, make the antenna surface quadrature of this antenna, and this antenna is embedded in this insulation course with the locational state that is configured in intersection.
12. RFID label according to claim 9 is characterized in that,
In above-mentioned protection sheet metal, the slit by a H font has formed relative pair of metal arm;
The size of above-mentioned protection sheet metal is the size with the electromagnetic wavelength resonances of UHF or microwave band.
13. a RFID label possesses the RFID plug-in unit that is embedded in the protection metalwork, it is characterized in that having:
The protection sheet metal; And
Be fixed on the insulation course on this protection sheet metal,
Wherein, above-mentioned insulation course has the position of taking in of a plurality of RFID plug-in units corresponding with each frequency band of LF, HF, UHF and microwave band;
Above-mentioned protection sheet metal has metal arm that has slit and the metal arm that does not have slit,
The RFID plug-in unit of above-mentioned LF and HF band be accommodated in respectively the metal arm that has slit under,
The RFID plug-in unit of above-mentioned UHF and microwave band be accommodated in respectively the metal arm that do not have slit under,
Under frequency separately, work independently respectively.
14. RFID label according to claim 13 is characterized in that,
One in the metal arm that does not have slit of above-mentioned protection sheet metal constitutes, and the size that makes this arm is consistent with the resonant size of 1/4 wavelength of above-mentioned UHF band, under this arm, takes in the RFID plug-in unit of above-mentioned UHF frequency band, makes itself and this arm electromagnetic coupled;
Make the size of another metal arm that does not have slit consistent, under this arm, take in the RFID plug-in unit of above-mentioned microwave band, make itself and this arm electromagnetic coupled with the resonant size of 1/4 wavelength of above-mentioned microwave band;
In one in the metal arm that has slit of above-mentioned protection sheet metal, utilize the insulation characterisitic of above-mentioned slit to make the communication electromagnetic wave of above-mentioned LF band see through this arm, under this arm, take in the RFID plug-in unit of above-mentioned LF band, do not make itself and this arm electromagnetic coupled;
Have in the metal arm of slit at another, utilize the insulation characterisitic of above-mentioned slit to make the communication electromagnetic wave of above-mentioned HF band see through this arm, under this arm, take in the RFID plug-in unit of above-mentioned HF band, do not make itself and this arm electromagnetic coupled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310749580.XA CN103714377B (en) | 2010-03-26 | 2010-04-28 | RFID tag having wideband protection accessory for use in RFID |
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| JP2010-072562 | 2010-03-26 | ||
| JP2010072562A JP4982581B2 (en) | 2010-03-26 | 2010-03-26 | RFID tag with broadband protection bracket for RFID |
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| CN102201073A true CN102201073A (en) | 2011-09-28 |
| CN102201073B CN102201073B (en) | 2014-04-02 |
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| CN201010171619.0A Expired - Fee Related CN102201073B (en) | 2010-03-26 | 2010-04-28 | RFID tag equipped with RFID boradband protective metal member |
| CN201310749580.XA Expired - Fee Related CN103714377B (en) | 2010-03-26 | 2010-04-28 | RFID tag having wideband protection accessory for use in RFID |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310749580.XA Expired - Fee Related CN103714377B (en) | 2010-03-26 | 2010-04-28 | RFID tag having wideband protection accessory for use in RFID |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4982581B2 (en) |
| CN (2) | CN102201073B (en) |
| TW (1) | TWI437496B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051759A (en) * | 2013-03-15 | 2015-11-11 | 株式会社日立系统 | Compact IC tag provided with laminated coil antenna, and manufacturing method therefor |
| CN105556749A (en) * | 2013-07-19 | 2016-05-04 | 诺基亚技术有限公司 | Apparatus and methods for wireless communication |
| CN106022436A (en) * | 2016-05-12 | 2016-10-12 | 安徽晶太信息科技有限公司 | Butterfly transponder and production method thereof |
| CN106599970A (en) * | 2016-11-03 | 2017-04-26 | 王力安防科技股份有限公司 | Metal product with RFID tag |
| CN108062581A (en) * | 2016-11-08 | 2018-05-22 | 蒋涵卫 | It is a kind of can multi-angle identification UHF special-shaped cards |
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| JP2013228842A (en) * | 2012-04-25 | 2013-11-07 | Hitachi Chemical Co Ltd | Rfid tag |
| JP5702880B2 (en) * | 2013-08-26 | 2015-04-15 | 株式会社Ｉｒｏ | IC tag holder, IC tag folder, IC tag and IC tag mounting structure |
| JP6359854B2 (en) * | 2014-03-28 | 2018-07-18 | 株式会社Ｉｒｏ | IC tag unit for manhole cover and manhole cover with integrated IC tag |
| JP6490536B2 (en) * | 2014-08-25 | 2019-03-27 | 株式会社Ｉｒｏ | IC tag protection structure |
| JP6474235B2 (en) * | 2014-11-07 | 2019-02-27 | 株式会社Ｉｒｏ | IC tag |
| WO2016170752A1 (en) | 2015-04-22 | 2016-10-27 | 東洋製罐グループホールディングス株式会社 | Rf tag |
| CN106852052B (en) * | 2017-03-30 | 2019-07-26 | 维沃移动通信有限公司 | A kind of metal shell processing method, metal shell and electronic equipment |
| JP7102701B2 (en) | 2017-09-29 | 2022-07-20 | 東洋製罐グループホールディングス株式会社 | RF tag |
| JP6630805B1 (en) * | 2018-11-16 | 2020-01-15 | 株式会社新来島どっく | Shockproof protective case for wireless IC tags |
| CN111342219B (en) * | 2018-12-18 | 2022-11-08 | 北京京东乾石科技有限公司 | Electronic label antenna |
| JP2020107118A (en) * | 2018-12-27 | 2020-07-09 | マスプロ電工株式会社 | RF tag device |
| JP7028212B2 (en) * | 2019-03-26 | 2022-03-02 | 株式会社Soken | Antenna device |
| DE212020000243U1 (en) | 2019-06-21 | 2020-12-09 | Murata Manufacturing Co., Ltd. | RFID label and article equipped with an RFID label |
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| US6388630B1 (en) * | 1999-07-22 | 2002-05-14 | Supersensor (Proprietary) Limited | Waveguide for transmitting RF energy through an RF barrier |
| JP3679338B2 (en) * | 2000-08-02 | 2005-08-03 | 株式会社ハネックス | RFID tag housing structure and installation structure |
| JP2006200736A (en) * | 2004-12-21 | 2006-08-03 | Digital Information Technologies Kk | Ic tag possessing body and tag holding body |
| JP4856492B2 (en) * | 2006-08-04 | 2012-01-18 | 株式会社日立製作所 | RFID tag |
| JP2008191927A (en) * | 2007-02-05 | 2008-08-21 | Brother Ind Ltd | Radio tag label and tag tape |
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2010
- 2010-03-26 JP JP2010072562A patent/JP4982581B2/en active Active
- 2010-04-14 TW TW99111622A patent/TWI437496B/en active
- 2010-04-28 CN CN201010171619.0A patent/CN102201073B/en not_active Expired - Fee Related
- 2010-04-28 CN CN201310749580.XA patent/CN103714377B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1443340A (en) * | 2000-07-19 | 2003-09-17 | 株式会社哈尼克斯 | RFID tag housing structure, RFID tag installation structure and RFID tag communication method |
| JP2008123196A (en) * | 2006-11-10 | 2008-05-29 | Hitachi Ltd | Rfid tag and method for installing rfid tag |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051759A (en) * | 2013-03-15 | 2015-11-11 | 株式会社日立系统 | Compact IC tag provided with laminated coil antenna, and manufacturing method therefor |
| CN105051759B (en) * | 2013-03-15 | 2018-06-12 | 株式会社日立系统 | Have the small-sized IC tag and its preparation method of multilayer coil antenna |
| CN105556749A (en) * | 2013-07-19 | 2016-05-04 | 诺基亚技术有限公司 | Apparatus and methods for wireless communication |
| CN106022436A (en) * | 2016-05-12 | 2016-10-12 | 安徽晶太信息科技有限公司 | Butterfly transponder and production method thereof |
| CN106599970A (en) * | 2016-11-03 | 2017-04-26 | 王力安防科技股份有限公司 | Metal product with RFID tag |
| CN108062581A (en) * | 2016-11-08 | 2018-05-22 | 蒋涵卫 | It is a kind of can multi-angle identification UHF special-shaped cards |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103714377B (en) | 2017-01-11 |
| JP4982581B2 (en) | 2012-07-25 |
| CN103714377A (en) | 2014-04-09 |
| CN102201073B (en) | 2014-04-02 |
| TW201133350A (en) | 2011-10-01 |
| JP2011204130A (en) | 2011-10-13 |
| TWI437496B (en) | 2014-05-11 |
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Inventor after: Shan Neifan Inventor after: Shan Fangmao Inventor after: Yamauchi Shigeruyamakatamaoshishitohiroa Morimoto Hiromitsu Inventor after: Morimoto Hirogo Inventor before: Shan Neifan Inventor before: Shan Fangmao Inventor before: Shishikura Hiroaki Inventor before: Morimoto Hirogo |
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