CN105977609A - Rfid tag - Google Patents
Rfid tag Download PDFInfo
- Publication number
- CN105977609A CN105977609A CN201610486412.XA CN201610486412A CN105977609A CN 105977609 A CN105977609 A CN 105977609A CN 201610486412 A CN201610486412 A CN 201610486412A CN 105977609 A CN105977609 A CN 105977609A
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- CN
- China
- Prior art keywords
- arm
- shaped
- arms
- radiation
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G06K19/07758—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 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag
- G06K19/0776—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 arrangements for adhering the record carrier to further objects or living beings, functioning as an identification tag the adhering arrangement being a layer of adhesive, so that the record carrier can function as a sticker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
Abstract
The invention discloses an RFID tag, and the RFID tag comprises a dielectric plate. The front surface of the dielectric plate is provided with a microstrip antenna, and the microstrip antenna comprises two radiation units in left-right symmetry. The back surface of the dielectric plate is provided with an RFID chip. A signal coupling end of the RFID chip is electrically connected with the microstrip antenna. Through reasonable setting, the RFID tag is better in characteristics, is long in distance, and is excellent in performance.
Description
Technical field
The present invention relates to a kind of RFID label tag.
Background technology
RF identification i.e. RFID(Radio Frequency Identification) technology, also known as electronic tag, radio frequency identification, it is that one can be passed through radio signals identification specific objective and read and write related data, and sets up machinery or the communication technology of optical contact between system and specific objective without identifying.Conventional passive RFID has low frequency (125k ~ 134.2K), high frequency (13.56Mhz), hyperfrequency (860-960MHz).RFID label antenna is as the important component part of rfid system, and its performance is by the efficiency of whole for strong influence rfid system and quality.The principal element affecting RFID antenna performance includes the size of antenna, working frequency range, impedance and gain etc., therefore, if it is desirable to the antenna of a preferable RFID, just should have preferable antenna performance.
Summary of the invention
It is an object of the invention to overcome disadvantages described above, it is provided that a kind of RFID label tag.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of RFID label tag, includes a dielectric-slab, and the front of described dielectric-slab is provided with microstrip antenna, and described microstrip antenna includes two symmetrical radiating elements；The reverse side of described dielectric-slab is provided with RFID chip；The signal coupled end of described RFID chip is electrically connected with microstrip antenna.
Wherein, each described radiating element includes arc feed arm；The short arc limit of described arc feed arm is provided with rectangle decoupling and windows, and described arc feed arm is provided with semicircle feed away from the side that rectangle decoupling is windowed and windows；Also including two fan-shaped fan beam arms, the short arc limit of two fan beam arms is oppositely arranged, and two fan beam arms two ends with described arc feed arm respectively are connected；The side on the short arc limit of each fan beam arm is extended to the side away from long arc limit respectively the first radiation arm, and described first radiation arm is not connected with one end of fan beam arm and extends to the side away from arc feed arm and have first linking arm of " several " font；The second linking arm having " Π " font is extended in one end that first linking arm is not connected with the first radiation arm；Also include the second radiation arm and the 3rd radiation arm connected respectively with two second linking arm one end；The first U-shaped arm that described second radiation arm includes U-shaped and the first L-arm of L-shaped being connected with first U-shaped arm one end；Described 3rd radiation arm includes the second U-shaped arm including U-shaped and second L-arm of the L-shaped being connected with second U-shaped arm one end；The brachium that the longitudinal arm of described first L-arm is more longitudinal than the second L-arm, and the arm free end of described first L-arm longitudinal direction and the horizontal arm of the second L-arm flush；The power feed hole for feeding coupling it is additionally provided with in described arc feed arm.
Wherein, two the first radiation arms are equipped with sector notch towards the side of arc feed arm.
Wherein, the transverse width of described first radiation arm is 0.4-1.2mm.
Wherein, two the first linking arms are provided with rectangular shaped semiconductor isolation strip in forming rectangular area；Being filled with quasiconductor in rectangular shaped semiconductor isolation strip, described quasiconductor is silicon dioxide.
Wherein, if the transverse width of the second linking arm is X, the transverse width of the first linking arm is Y, and the arm brachium of the first L-arm longitudinal direction is N, then N+X=2Y.
Wherein, the front of dielectric-slab is additionally provided with two parasitic oscillator unit, the first parasitic oscillator arms that each parasitic oscillator unit includes rectangle and the second parasitic oscillator arms of triangle extended from the first parasitic oscillator arms.
Wherein, the peripheral side plating in described dielectric-slab front is provided with a circle cage ring arm；
Wherein, described radiating element is also provided with circular flow-disturbing hole；
Wherein, the back side of described dielectric-slab is additionally provided with waterproof packaging plastic, and described RFID chip is located in packaging plastic；
The invention have the benefit that, by reasonably arranging, the present invention has preferable RFID label tag characteristic, distance is remote, performance excellence in terms of antenna performance.
Accompanying drawing explanation
Fig. 1 is the top view of the present invention；
Fig. 2 is the radiative unit structure schematic diagram of the present invention；
Fig. 3 is the upward view of the present invention；
Fig. 4 is sectional view of the present invention；
Fig. 5 is the datagram of the standing-wave ratio of the microstrip antenna of the present invention
Fig. 6 is the datagram of the return loss of the microstrip antenna of the present invention
Description of reference numerals in Fig. 1 to Fig. 6:
D1-RFID chip；D2-packaging plastic；
F1-dielectric-slab；F21-rectangular shaped semiconductor isolation strip；F22-parasitism oscillator unit；F23-cage ring arm；F3-arc feed arm；F31-semicircle feed is windowed；F4-fan beam arm；F41-circle flow-disturbing hole；F5-the first radiation arm；F6-the first linking arm；F7-the second linking arm；F81-the first U-shaped arm；F82-the first L-arm；F83-the second U-shaped arm；F84-the second L-arm.
Detailed description of the invention
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings, is not that the practical range of the present invention is confined to this.
As shown in Figures 1 to 6, a kind of RFID label tag described in the present embodiment, include a dielectric-slab f1, the front of described dielectric-slab f1 is provided with microstrip antenna, and described microstrip antenna includes two symmetrical radiating elements；The reverse side of described dielectric-slab f1 is provided with RFID chip D1；The signal coupled end of described RFID chip D1 is electrically connected with microstrip antenna.By reasonably arranging, the present invention has preferable RFID label tag characteristic, and distance is remote, performance excellence in terms of antenna performance.
A kind of RFID label tag described in the present embodiment, each described radiating element includes arc feed arm f3；The short arc limit of described arc feed arm f3 is provided with rectangle decoupling and windows, and described arc feed arm f3 is provided with semicircle away from the side that rectangle decoupling is windowed and feeds the f31 that windows；Also including two fan-shaped fan beam arm f4, the short arc limit of two fan beam arm f4 is oppositely arranged, and two fan beam arm f4 two ends with described arc feed arm f3 respectively are connected；The side on the short arc limit of each fan beam arm f4 is extended to the side away from long arc limit respectively the first radiation arm f5, and described first radiation arm f5 is not connected with one end of fan beam arm f4 and extends the first linking arm f6 having " several " font to the side away from arc feed arm f3；The the second linking arm f7 having " Π " font is extended in one end that first linking arm f6 is not connected with the first radiation arm f5；Also include the second radiation arm and the 3rd radiation arm connected respectively with two second linking arm f7 one end；The first U-shaped arm f81 that described second radiation arm includes U-shaped and the first L-arm f82 of L-shaped being connected with first U-shaped arm f81 one end；Described 3rd radiation arm includes the second U-shaped arm f83 including U-shaped and the second L-arm f84 of the L-shaped being connected with second U-shaped arm f83 one end；Described arm longitudinal for first L-arm f82 is than the brachium of the second L-arm f84 longitudinal direction, and described arm free end longitudinal for first L-arm f82 and the second arm horizontal for L-arm f84 flush；The power feed hole for feeding coupling it is additionally provided with in described arc feed arm f3.Gyroscope and Network Analyzer and electricity is utilized to adjust its data of analysis as follows, owing to this antenna frequency spectrum Primary communication frequency band is 0.7-1.1GHz, in whole frequency band, than at 30.30db to 34.20dB before and after being surveyed, illustrate that its gain performance is the most perfect in frequency band, additionally, as the performance in terms of Fig. 6, device return loss is protruded, it is had to be maintained at about-35dB in wider frequency band, return loss at whole high band is held in below-10dB, and water is average more than other similar antenna levels；Further, since the well-designed of structure, its standing-wave ratio performance is the most excellent, as it is shown in figure 5, the standing-wave ratio in its whole frequency band is all within 1.25, some frequency range is even up to about 1.1.
A kind of RFID label tag described in the present embodiment, two the first radiation arm f5 are equipped with sector notch towards the side of arc feed arm f3.The setting of sector notch, by analyser and actual test, finds that sector notch, under the performance premise not reducing standing-wave ratio, adds gain, improves antenna performance.
A kind of RFID label tag described in the present embodiment, the transverse width of described first radiation arm f5 is 0.4-1.2mm.This width is preferable width, and the first radiation arm f5 of this width is found by checking, is so that antenna electrical performance reaches optimal width.
A kind of RFID label tag described in the present embodiment, two the first linking arm f6 are provided with rectangular shaped semiconductor isolation strip f21 in forming rectangular area；Being filled with quasiconductor in the f21 of rectangular shaped semiconductor isolation strip, described quasiconductor is silicon dioxide.Being filled with quasiconductor in the f21 of rectangular shaped semiconductor isolation strip, described quasiconductor is silicon dioxide；Being found by test and actual detection, arranging of this structure can be effectively increased isolation level.
A kind of RFID label tag described in the present embodiment, if the transverse width of the second linking arm f7 is X, the transverse width of the first linking arm f6 is Y, and arm brachium longitudinal for the first L-arm f82 is N, then N+X=2Y.By calculating, as long as meeting this formula, its structure will reach optimal reasonable level, it is possible to significantly increases the properties of antenna；There is its gain can increase 2-6%.
A kind of RFID label tag described in the present embodiment, two parasitic oscillator unit f22 it are additionally provided with, the first parasitic oscillator arms that each parasitic oscillator unit f22 includes rectangle and the second parasitic oscillator arms of triangle extended from the first parasitic oscillator arms on the front of dielectric-slab f1.Parasitic oscillator arms can improve antenna stabilization, improves entirety cooperation performance, reduces standing-wave ratio.
A kind of RFID label tag described in the present embodiment, the peripheral side plating in described dielectric-slab f1 front is provided with a circle cage ring arm f23；Isolation can be effectively increased, reduce interference.
A kind of RFID label tag described in the present embodiment, described radiating element is also provided with circular flow-disturbing hole f41；Flow-disturbing hole can increase the current length in radiation arm, and one can increase bandwidth, it can in addition contain significantly increase gain.
A kind of RFID label tag described in the present embodiment, the back side of described dielectric-slab f1 is additionally provided with waterproof packaging plastic D2, and described RFID chip D1 is located in packaging plastic D2；Packaging plastic D2 is waterproof for chip, dust-proof etc..It addition, packaging plastic D2 can also be located on microstrip antenna, prevent microstrip antenna from aoxidizing, affect antenna performance.
The above is only a preferred embodiment of the present invention, therefore all equivalence changes done according to structure, feature and the principle described in present patent application scope or modification, it is included in the protection domain of present patent application.
Claims (7)
1. a RFID label tag, it is characterised in that: including a dielectric-slab (f1), the front of described dielectric-slab (f1) is provided with microstrip antenna, and described microstrip antenna includes two symmetrical radiating elements；The reverse side of described dielectric-slab (f1) is provided with RFID chip (D1)；The signal coupled end of described RFID chip (D1) is electrically connected with microstrip antenna；
Two parasitic oscillator unit (f22) it are additionally provided with, the first parasitic oscillator arms that each parasitic oscillator unit (f22) includes rectangle and the second parasitic oscillator arms of triangle extended from the first parasitic oscillator arms on the front of dielectric-slab (f1).
2. it is additionally provided with two parasitic oscillator unit (f22) on the front of dielectric-slab (f1), the first parasitic oscillator arms that each parasitic oscillator unit (f22) includes rectangle and the second parasitic oscillator arms of triangle extended from the first parasitic oscillator arms.The peripheral side plating in described dielectric-slab (f1) front is provided with circle cage ring arm (f23)；
Described radiating element is also provided with circular flow-disturbing hole (f41)；
The back side of described dielectric-slab (f1) is additionally provided with waterproof packaging plastic (D2), and described RFID chip (D1) is located in packaging plastic (D2).
A kind of RFID label tag the most according to claim 1, it is characterised in that: each described radiating element includes arc feed arm (f3)；The short arc limit of described arc feed arm (f3) is provided with rectangle decoupling and windows, and described arc feed arm (f3) is provided with semicircle feed away from the side that rectangle decoupling is windowed and windows (f31)；Also including two fan-shaped fan beam arms (f4), the short arc limit of two fan beam arms (f4) is oppositely arranged, and two fan beam arms (f4) two ends with described arc feed arm (f3) respectively are connected；The side on the short arc limit of each fan beam arm (f4) is extended to the side away from long arc limit respectively the first radiation arm (f5), and described first radiation arm (f5) is not connected with one end of fan beam arm (f4) and extends to the side away from arc feed arm (f3) and have first linking arm (f6) of " several " font；The second linking arm (f7) having " Π " font is extended in one end that first linking arm (f6) is not connected with the first radiation arm (f5)；Also include the second radiation arm and the 3rd radiation arm connected respectively with two the second linking arm (f7) one end；The first U-shaped arm (f81) that described second radiation arm includes U-shaped and first L-arm (f82) of L-shaped being connected with first U-shaped arm (f81) one end；Described 3rd radiation arm includes the second U-shaped arm (f83) including U-shaped and second L-arm (f84) of the L-shaped being connected with second U-shaped arm (f83) one end；The brachium that arm that described first L-arm (f82) is longitudinal is more longitudinal than the second L-arm (f84), and the arm free end of described first L-arm (f82) longitudinal direction and the horizontal arm of the second L-arm (f84) flush；It is additionally provided with the power feed hole for feeding coupling on described arc feed arm (f3).
A kind of RFID label tag the most according to claim 2, it is characterised in that: two the first radiation arms (f5) are equipped with sector notch towards the side of arc feed arm (f3).
A kind of RFID label tag the most according to claim 2, it is characterised in that: the transverse width of described first radiation arm (f5) is 0.4-1.2mm.
A kind of RFID label tag the most according to claim 2, it is characterised in that: two the first linking arms (f6) are provided with rectangular shaped semiconductor isolation strip (f21) in forming rectangular area；Being filled with quasiconductor in rectangular shaped semiconductor isolation strip (f21), described quasiconductor is silicon dioxide.
A kind of RFID label tag the most according to claim 2, it is characterised in that: the transverse width setting the second linking arm (f7) is Y as X, the transverse width of the first linking arm (f6), and the arm brachium of the first L-arm (f82) longitudinal direction is N, then N+X=2Y.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486412.XA CN105977609A (en) | 2016-06-28 | 2016-06-28 | Rfid tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610486412.XA CN105977609A (en) | 2016-06-28 | 2016-06-28 | Rfid tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105977609A true CN105977609A (en) | 2016-09-28 |
Family
ID=57019199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610486412.XA Withdrawn CN105977609A (en) | 2016-06-28 | 2016-06-28 | Rfid tag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923111A (en) * | 2018-06-07 | 2018-11-30 | 合肥工业大学 | A kind of UHF RFID near field reader antenna applied to liquid environment |
-
2016
- 2016-06-28 CN CN201610486412.XA patent/CN105977609A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923111A (en) * | 2018-06-07 | 2018-11-30 | 合肥工业大学 | A kind of UHF RFID near field reader antenna applied to liquid environment |
| CN108923111B (en) * | 2018-06-07 | 2020-08-07 | 合肥工业大学 | UHF RFID near field reader antenna applied to liquid environment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160928 |
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| WW01 | Invention patent application withdrawn after publication |