CN107257009A - Anti-metal tag antenna and label - Google Patents
Anti-metal tag antenna and label Download PDFInfo
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- CN107257009A CN107257009A CN201710153792.XA CN201710153792A CN107257009A CN 107257009 A CN107257009 A CN 107257009A CN 201710153792 A CN201710153792 A CN 201710153792A CN 107257009 A CN107257009 A CN 107257009A
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- substrate
- irradiation unit
- reflecting part
- metal
- label
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 69
- 239000002184 metal Substances 0.000 title claims abstract description 69
- 239000000758 substrate Substances 0.000 claims abstract description 57
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical group 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07775—Antenna details the antenna being on-chip
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Abstract
The present invention provides a kind of anti-metal tag antenna and label, and the label antenna includes substrate and antenna structure.Antenna structure is arranged at substrate, and antenna structure includes irradiation unit, reflecting part and connecting portion.Irradiation unit, which is formed on one end of substrate, irradiation unit, has current feed department.Reflecting part is formed at the other end of substrate and in closed, and the energy that reflecting part is radiated to irradiation unit reflects.Connecting portion is arranged at substrate and is electrically connected with irradiation unit and reflecting part.
Description
Technical field
The present invention relates to technical field of RFID, and more particularly to a kind of anti-metal tag antenna and label.
Background technology
At present, passive UHF RFID techniques have been widely used in every profession and trade.And RFID technique combination sensor technology institute
The passive UHF RFID sensing chips of exploitation, are allowed to have more extensive application in the industrial trade such as electric power field.
In electric force looped network cabinet, often the key node in more than 10KV, cable is frequently accompanied by high temperature exothermic phenomenon to operating voltage, and these
Node is often the important hidden danger point of electric power accident, therefore RFID tag of the application with temp sensing function can enter to key node
Row monitoring in real time, so that the generation prevented accident, substantially reduces the incidence of accident.
Key node in electric power cabinet is frequently located at T-shaped cable connector, and T-shaped cable connector is used for the master of cable distribution box
Net system or the inlet-outlet line cable connector as ring main unit, can both connect more than 600A bushings, multi-joint plate connector, also may be used
Connection is combined with more than 600A bus casings, rear T-shaped cable connector, multiway cable branch is formed, before T-shaped cable connector typically divides
Insert and rear slotting, arrange in pairs or groups insulation plug to realize the effect of insulation, sealing and shunting.T-shaped cable connector generally comprises conducting rod, spiral shell
The various metals structures such as bolt, plain cushion, spring washer, nut, insulation plug (containing the metal parts such as pad in inside) and crimp type terminal, and
Metal structure has reflex to the energy of antenna, adds class cylinder product space narrow and small in T-shaped cable connector, this is right
The design of label antenna brings huge challenge.
Under the conditions of free space, the identification distance between reader and electronic tag is determined by below equation：
In Pth(minimum of RFID chip touches threshold power) and the certain bars of EIRP (gain parameter relevant with card reader)
Under part, recognize apart from the main gain Gs by label antenna of RtagDetermined with transmission coefficient τ.In Pth(minimum of RFID chip touches threshold
Be worth power) and EIRP (gain parameter relevant with card reader) it is certain under conditions of, recognize apart from R mainly by the increasing of label antenna
Beneficial GtagDetermined with transmission coefficient τ.
Current anti-metal tag is generally rectangular planar structure, and even minimum rectangular planar structure label can not also be put
Put in T-shaped cable connector.The miniaturization flexible label of main flow can be placed on the narrow and small cylindrical volume of T-shaped cable connector reluctantly
In space, but it is due to the influence of metal parts, gain GtagLow, transmission coefficient τ is small, and identification is very near apart from R, or even can not
It is identified to.Therefore for electric power application, it is necessary to carry out special design to label antenna.
The content of the invention
There is provided a kind of anti-metal tag antenna in order to overcome the problem of existing anti-metal tag anti-metal effect is poor by the present invention
And label.
To achieve these goals, the present invention provides a kind of anti-metal tag antenna, and the label antenna includes substrate and day
Cable architecture.Antenna structure is arranged at substrate, and antenna structure includes irradiation unit, reflecting part and connecting portion.Irradiation unit is formed at substrate
One end, there is on irradiation unit current feed department.Reflecting part is formed at the other end of substrate and in closed, and reflecting part is to irradiation unit spoke
The energy penetrated is reflected.Connecting portion is arranged at substrate and is electrically connected with irradiation unit and reflecting part.
In one embodiment of the invention, irradiation unit is in annular shape, and current feed department is the feedback for extending radially through irradiation unit along annulus
Electric groove.
In one embodiment of the invention, reflecting part is in annular shape, and the annular width of reflecting part is wide more than the annulus of irradiation unit
Degree.
In one embodiment of the invention, the annular width and girth of irradiation unit and reflecting part are with being connected on current feed department
The matches impedances of label chip.
In one embodiment of the invention, there is at least one cable-through hole on substrate, connecting portion passes through at least one cable-through hole
It is electrically connected with irradiation unit and reflecting part.
In one embodiment of the invention, connecting portion is the metal tape for being arranged on substrate-side wall and extending to substrate two ends,
Metal tape is electrically connected with irradiation unit and reflecting part.
In one embodiment of the invention, substrate is cylindrical, and the center of substrate has the substrate that axially penetrates through along substrate
Mounting hole, the external diameter of substrate is more than or equal to the Breadth Maximum of reflecting part.
In one embodiment of the invention, irradiation unit and reflecting part are printed in substrate, and the material point of irradiation unit and reflecting part
Not Wei metal or electrical conductivity alloy, substrate is any of FR-4 epoxy glass fibers plate, plastic plate, ceramic wafer or cystosepiment.
Another aspect of the present invention also provides a kind of anti-metal tag, and the metal label includes the label described in any of the above-described
Antenna and the label chip being connected on current feed department.
In summary, the anti-metal tag antenna that provides of the present invention and label compared with prior art, with advantages below：
By forming irradiation unit and reflecting part respectively at the two ends of substrate and setting reflecting part to be in closed, irradiation unit radiation
The reflection of energy reflected portion after be overlapped so as to improve the gain of antenna, increase substantially the identification distance of label antenna.
And when anti-metal tag antenna is attached to metal objects, the influence of the metal parts of the maskable reflecting part side of reflecting part,
Identification distance is further improved, the effect of anti-metal is reached.
In addition, passing through the resistance of the width and girth that set irradiation unit and reflecting part and the label chip being connected on current feed department
It is anti-to match to improve the transmission coefficient of antenna, so as to improve the identification distance of label antenna.Further, increase can also be passed through
The thickness of substrate come enable reflected portion reflect after the energy and irradiation unit energy that reflect carried in remotely further be superimposed
The gain of high antenna, to obtain farther identification distance and tag antenna structure simply, is particularly suitable for producing in enormous quantities.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly,
And coordinate accompanying drawing, it is described in detail below.
Brief description of the drawings
Fig. 1 show the top view of the anti-metal tag antenna of one embodiment of the invention offer.
Fig. 2 show the upward view of the anti-metal tag antenna shown in Fig. 1.
Fig. 3 show the sectional view of the anti-metal tag antenna described in Fig. 1.
Fig. 4 is shown in the anti-metal tag antenna shown in Fig. 1, and metallic vias is located under different angles, and antenna impedance is real
Portion with frequency change curve.
Fig. 5 is shown in the anti-metal tag antenna shown in Fig. 1, and metallic vias is located under different angles, and antenna impedance is empty
Portion with frequency change curve.
Fig. 6 show the top view of the anti-metal tag of one embodiment of the invention offer.
Fig. 7 is shown in the anti-metal tag shown in Fig. 6, and metallic vias is located at the gain side under the conditions of angle an=70 degree
Xiang Tu.
Embodiment
As shown in Figure 1 to Figure 3, the anti-metal tag antenna 201 that the present embodiment is provided includes substrate 10 and antenna structure 20.
Antenna structure 20 is arranged at substrate 10, and antenna structure 20 includes irradiation unit 1, reflecting part 2 and connecting portion 3.Irradiation unit 1 is formed at
There is current feed department 11 on one end of substrate 10, irradiation unit 1.Reflecting part 2 is formed at the other end of substrate 10 and in closed, reflection
The energy that portion 2 is radiated to irradiation unit 1 reflects.Connecting portion 3 is arranged at substrate 10 and is electrically connected with irradiation unit 1 and reflecting part 2.
In the anti-metal tag antenna that the present embodiment is provided, the energy that the reflecting part 2 of closed can both launch irradiation unit 1
Reflected, the energy of reflection is superimposed so as to increase the emittance of irradiation unit 1 with the energy that irradiation unit 1 is radiated, and carries significantly
The gain of high label antenna, makes it also to have larger identification distance even if in applied metal environment；Meanwhile, reflecting part 2 is also
Influence of the maskable metal positioned at the side of reflecting part 2 to the gain of irradiation unit 1, reaches the effect of anti-metal.
In the present embodiment, irradiation unit 1 and reflecting part 2 are in annular shape, and the setting causes irradiation unit 1 and the table of reflecting part 2
Existing electric current is annularly distributed, can partly shielding effect pass through metallic conductor influence, make label antenna more have anti-metal
Performance.Further, the annular width of reflecting part 2 is set to be more than the annular width of irradiation unit 1, the external diameter of substrate 10 is more than or waited
In the Breadth Maximum of reflecting part 2.The setting enables the energy that a large amount of reflected radiation portions 1 of reflecting part 2 launch, so as to carry significantly
The gain of high antenna.It is preferred that, the external diameter of irradiation unit 1 is 13 millimeters, and internal diameter is 11 millimeters, and the annular width of irradiation unit 1 is 2
Millimeter.The external diameter of reflecting part 2 is 13 millimeters, and internal diameter is 6 millimeters, and the annular width of reflecting part 2 is 7 millimeters.However, the present invention is right
This is not limited in any way.The width and girth of irradiation unit 1 and reflecting part 2 can influence the impedance of antenna structure 20 in actual use,
To realize the impedance matching of antenna impedance and label chip, it is necessary to be optimized to the width and girth of irradiation unit 1 and reflecting part 2
Design.Specifically, if label chip has re-j*im in working frequency 915MHz, (input impedance of antenna is one multiple
Number, re is real part, and im is imaginary part, and j is imaginary unit) input impedance, therefore design irradiation unit 1 and reflecting part 2 width and
During girth, the impedance of antenna structure 20 should be made as far as possible close to re+j*im.Impedance matching can greatly reduce signal energy in biography
Loss during defeated, increases substantially the reading distance of signal.
The gain of label antenna can be further improved in other embodiments by changing the thickness of substrate 10.It is specific and
Speech, the ripple that irradiation unit 1 is launched as thickness d=0.25 λ of substrate 10 is remotely being superimposed with the ripple that reflecting part 2 reflects, further
The identification distance of label is improved, λ is the medium wavelength that the ripple that irradiation unit 1 is launched is transmitted in substrate media.
In the present embodiment, current feed department 11 is the feed groove for extending radially through irradiation unit 1 along annulus.It is preferred that, feedback is set
The concrete structure of electric groove is rectangle, and the length of rectangle feed groove is 2 millimeters, for convenience of welding label chip, sets rectangle to feed
The width of groove is slightly larger than the Breadth Maximum of label chip, in the present embodiment, and the width of rectangle feed groove is also 2 millimeters.However,
The present invention is not limited in any way to this.In other embodiments, the shape of current feed department can be other shape phases with label chip
The feed groove or feed mouth of matching, corresponding size can also be designed according to the size of label chip.
In the present embodiment, there is at least one cable-through hole for axially penetrating through substrate along substrate, Yu Benshi on substrate 10
Apply in example, there is a cable-through hole on substrate 10.However, the present invention is not limited in any way to this.Connecting portion 3 passes through cable-through hole electricity
Connect irradiation unit 1 and reflecting part 2.In the present embodiment, irradiation unit 1 and reflecting part 2 are printed on substrate 10, therefore set line
Hole is metal cable-through hole.However, the present invention is not limited in any way to this.In other embodiments, connecting portion can be to be arranged at base
On the wall of plate side and the metal tape at substrate two ends is extended to, metal tape is electrically connected with irradiation unit and reflecting part.
In the present embodiment, the radius of metal cable-through hole is 0.5 millimeter.However, the present invention is not limited in any way to this.By
Belong to a part for antenna structure 20 in connecting portion 3, the impedance of connecting portion 3 is a part for antenna impedance, therefore is being hindered
The specific connected mode of consideration connecting portion 3 is needed during anti-matched design.
Under the conditions of free space, the identification distance between reader and electronic tag is determined by below equation：
In Pth(minimum of RFID chip touches threshold power) and the certain bars of EIRP (gain parameter relevant with card reader)
Under part, recognize apart from the main gain Gs by label antenna of RtagDetermined with transmission coefficient τ.In Pth(minimum of RFID chip touches threshold
Be worth power) and EIRP (gain parameter relevant with card reader) it is certain under conditions of, recognize apart from R mainly by the increasing of label antenna
Beneficial GtagDetermined with transmission coefficient τ.Impedance matching between label antenna 201 and label chip 202 directly affects transmission system
Number τ.
In the anti-metal tag that the present embodiment is provided, the position of metal cable-through hole directly affects label antenna 201
Impedance.The line on the basis of the center line of label chip radially, cross metal cable-through hole the center of circle and substrate the center of circle it is straight
Angle between line and datum line is angle an of the metal cable-through hole on substrate.As shown in Fig. 4, when metallic vias is located at angle
Spend under the conditions of an=50,60,70, the real part re (Z (1,1)) of label antenna impedance is with the change curve of frequency.It can be obtained from figure
At 915Mhz the real part of label antenna impedance be respectively 5.5,7.6 and 9.6 ohm, corresponding curve is respectively m1, m2 in Fig. 4
And m3.As shown in figure 5, under the conditions of metallic vias is located at angle an=50,60,70, the imaginary part im of label antenna impedance (Z (1,
1)) with the change curve of frequency.It can be obtained from figure, the imaginary part of label antenna impedance is respectively 256.2,197.8 and at 915Mhz
159.3 ohm, corresponding curve is respectively m4, m5 and m6 in Fig. 5.When carrying out impedance matching optimization design, it may be determined that antenna
Irradiation unit 1 in structure 20, the position of reflecting part 2 and metal cable-through hole and select the label chip with the impedance of antenna structure 20
Realize impedance matching.Also can be by adjusting the size and the chi of reflecting part 2 of position or irradiation unit 1 of the metal cable-through hole on substrate
It is very little to match a certain specific label chip.Relative to the size and the size of reflecting part 2 of irradiation unit 1, the position of metal cable-through hole
The change put is simpler, that is, is easier to hinder impedance adjustment of the label antenna at 915Mhz frequencies to the conjugation of label chip
Near anti-, transmission coefficient is greatly improved, so as to greatly improve identification distance.
In the present embodiment, antenna structure 20 is made up of copper product.However, the present invention is not limited in any way to this.Yu Qi
In its embodiment, antenna structure 20 can be made up of other metal materials such as gold, silver, aluminium or the electrical conductivity alloy such as scolding tin is made.Yu Ben
In embodiment, substrate 10 is FR-4 epoxy glass fiber plates.However, the present invention is not limited in any way to this.In other embodiments
In, substrate 10 can be plastic plate, ceramic wafer or cystosepiment.
It is corresponding with above-mentioned anti-metal tag antenna, a kind of anti-metal tag 200 that the present embodiment is also provided, such as Fig. 6
Shown, the label 200 includes the anti-metal tag antenna 201 described in the present embodiment and the label chip being connected on current feed department 11
202.In the present embodiment, label chip 202 is connected by way of binding on current feed department 11.However, the present invention does not make to this
It is any to limit.In other embodiments, label chip 202 can be connected on current feed department 11 by way of welding.
As shown in fig. 7, when metal cable-through hole angle an=70 and during with 202 impedance matching of label chip, the present embodiment
Reachable-the 3.3924dBi of maximum gain of the anti-metal tag of offer, considerably beyond most Miniaturization anti-metal labels.
In summary, the anti-metal tag antenna and label that the present invention is provided by forming radiation respectively at the two ends of substrate
Portion and reflecting part simultaneously set reflecting part to be in closed, are overlapped to improve after the reflected portion's reflection of energy of irradiation unit radiation
The gain of antenna, increases substantially the identification distance of label antenna.And when anti-metal tag antenna is attached to metal objects,
The influence of the metal parts of the maskable reflecting part side of reflecting part, further improves identification distance, reaches the effect of anti-metal.
In addition, passing through the resistance of the width and girth that set irradiation unit and reflecting part and the label chip being connected on current feed department
It is anti-to match to improve the transmission coefficient of antenna, so as to improve the identification distance of label antenna.Further, increase can also be passed through
The thickness of substrate come enable reflected portion reflect after the energy and irradiation unit energy that reflect carried in remotely further be superimposed
The gain of high antenna, to obtain farther identification distance and tag antenna structure simply, is particularly suitable for producing in enormous quantities.
It is any to know this skill although the present invention is disclosed above by preferred embodiment, but is not limited to the present invention
Skill person, without departing from the spirit and scope of the present invention, can make a little change and retouching, therefore protection scope of the present invention is worked as
It is defined depending on claims scope claimed.
Claims (9)
1. a kind of anti-metal tag antenna, it is characterised in that including：
Substrate；
Antenna structure, is arranged at the substrate, and the antenna structure includes：
Irradiation unit, being formed on one end of the substrate, the irradiation unit has current feed department；
Reflecting part, is formed at the other end of the substrate and in closed, the energy that the reflecting part is radiated to the irradiation unit
Reflected；
Connecting portion, is arranged at the substrate and is electrically connected with irradiation unit and reflecting part.
2. anti-metal tag antenna according to claim 1, it is characterised in that the irradiation unit is in annular shape, the feedback
Electric portion is the feed groove for extending radially through irradiation unit along annulus.
3. anti-metal tag antenna according to claim 1, it is characterised in that the reflecting part is described anti-in annular shape
The annular width for penetrating portion is more than the annular width of irradiation unit.
4. anti-metal tag antenna according to claim 1, it is characterised in that the annulus of the irradiation unit and reflecting part is wide
The matches impedances of degree and girth and the label chip being connected on current feed department.
5. anti-metal tag antenna according to claim 1, it is characterised in that on the substrate there is at least one to cross line
Hole, the connecting portion is electrically connected with the irradiation unit and reflecting part through at least one cable-through hole.
6. anti-metal tag antenna according to claim 1, it is characterised in that the connecting portion is to be arranged at the substrate
On the wall of side and the metal tape at substrate two ends is extended to, metal tape is electrically connected with the irradiation unit and reflecting part.
7. anti-metal tag antenna according to claim 1, it is characterised in that the substrate is cylindrical, the substrate
Center there is the mounting hole for axially penetrating through substrate along substrate, the maximum that the external diameter of the substrate is more than or equal to reflecting part is wide
Degree.
8. anti-metal tag antenna according to claim 1, it is characterised in that the irradiation unit and reflecting part are printed in institute
Substrate is stated, and the material of the irradiation unit and reflecting part is respectively metal or electrical conductivity alloy, substrate is FR-4 epoxy glass fibers
Any of plate, plastic plate, ceramic wafer or cystosepiment.
9. a kind of anti-metal tag, it is characterised in that including：
Label antenna described in claim any one of 1-8；And
It is connected to the label chip on current feed department.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153792.XA CN107257009A (en) | 2017-03-15 | 2017-03-15 | Anti-metal tag antenna and label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710153792.XA CN107257009A (en) | 2017-03-15 | 2017-03-15 | Anti-metal tag antenna and label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107257009A true CN107257009A (en) | 2017-10-17 |
Family
ID=60027542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710153792.XA Pending CN107257009A (en) | 2017-03-15 | 2017-03-15 | Anti-metal tag antenna and label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107257009A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113168760A (en) * | 2020-04-27 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Antenna module, remote controller and remote control system |
| CN113850361A (en) * | 2021-10-14 | 2021-12-28 | 北京京东乾石科技有限公司 | Electronic tag and antenna thereof |
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| CN204189950U (en) * | 2014-10-31 | 2015-03-04 | 中国计量学院 | A kind of UHF RFID anti-metal tag antenna of miniaturization |
| CN206585061U (en) * | 2017-03-15 | 2017-10-24 | 杭州泽济电子科技有限公司 | Anti-metal tag antenna and label |
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| US20130249762A1 (en) * | 2010-10-01 | 2013-09-26 | Thales | Broadband antenna reflector for a circular-polarized planar wire antenna and method for producing said antenna reflector |
| CN202711294U (en) * | 2012-02-03 | 2013-01-30 | 北京易泰易联科技有限公司 | Broad-band miniaturized metal-resistance electronic tag |
| CN102820538A (en) * | 2012-08-31 | 2012-12-12 | 电子科技大学 | Miniaturized and circularly-polarized RFID (Radio Frequency Identification) reader-writer antenna |
| CN103700931A (en) * | 2013-12-13 | 2014-04-02 | 中科院杭州射频识别技术研发中心 | Small-size fractal-fork anti-metallic tag antenna loaded with split-ring resonators |
| CN204189950U (en) * | 2014-10-31 | 2015-03-04 | 中国计量学院 | A kind of UHF RFID anti-metal tag antenna of miniaturization |
| CN206585061U (en) * | 2017-03-15 | 2017-10-24 | 杭州泽济电子科技有限公司 | Anti-metal tag antenna and label |
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| CN113168760A (en) * | 2020-04-27 | 2021-07-23 | 深圳市大疆创新科技有限公司 | Antenna module, remote controller and remote control system |
| CN113850361A (en) * | 2021-10-14 | 2021-12-28 | 北京京东乾石科技有限公司 | Electronic tag and antenna thereof |
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