CN105938939A - RFID label provided with parasitic vibrator unit - Google Patents
RFID label provided with parasitic vibrator unit Download PDFInfo
- Publication number
- CN105938939A CN105938939A CN201610539268.1A CN201610539268A CN105938939A CN 105938939 A CN105938939 A CN 105938939A CN 201610539268 A CN201610539268 A CN 201610539268A CN 105938939 A CN105938939 A CN 105938939A
- Authority
- CN
- China
- Prior art keywords
- microstrip
- microstrip line
- reflecting plate
- feed
- rfid label
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a RFID (Radio Frequency Identification) label provided with a parasitic vibrator unit. The RFID label provided with the parasitic vibrator unit comprises a rectangular PCB (Printed Circuit Board) baffle board; a micro-strip antenna is arranged at one surface of the PCB baffle board; a RFID chip is arranged at the other surface of the PCB baffle board; the RFID chip is in signal connection with the micro-strip antenna; the micro-strip antenna comprises a first micro-strip unit and a second micro-strip unit which are in longitudinal symmetry and have the same shape; the RFID label provided with the parasitic vibrator unit also comprises a first feed piece and a second feed piece used for feeding; the first feed piece and the second feed piece are arranged at the same side of the PCB baffle board; the first feed piece is used for electrically connecting with the first micro-strip unit; and the second feed piece is used for electrically connecting with the second micro-strip unit. Through the reasonable arrangement, the RFID label provided with the parasitic vibrator unit has relatively good RFID label characteristics, long distance and outstanding antenna performance.
Description
Technical field
The present invention relates to a kind of RFID label tag being provided with parasitic oscillator unit.
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 being provided with parasitic oscillator unit.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of RFID label tag being provided with parasitic oscillator unit, includes the PCB reflecting plate of rectangle, and the one side of described PCB reflecting plate is provided with microstrip antenna；The another side of described PCB reflecting plate is provided with RFID chip, and RFID chip is connected with microstrip antenna signal, and described microstrip antenna includes the first microstrip element symmetrical above and below, that shape is identical and the second microstrip element；Also including the first feed tab and the second feed tab, the first feed tab and the second feed tab for feed and be located at PCB reflecting plate homonymy, the first feed tab is for being connected with the first microstrip element feed, and the second feed tab is for being connected with the second microstrip element feed.
Wherein, described first microstrip element and the second microstrip element all include the first microstrip line, the second microstrip line extended from the first micro-strip alignment PCB reflecting plate center, the 3rd microstrip line that extends from the second micro-strip alignment PCB reflecting plate center；One end of described first microstrip line, one end of the second microstrip line, the 3rd microstrip line one end three alignment, the other end of described first microstrip line, the other end of the second microstrip line, the 3rd microstrip line other end three stepped；Described 3rd micro-strip alignment PCB reflecting plate center is extended multiple arch-shaped radiation ring arm；Be equipped with in each radiation ring arm one end be the arc other end be that the decoupling of rectangle is windowed；Described first microstrip line is provided with multiple rectangle pit away from the side at PCB reflecting plate center；
Described first feed tab is electrically connected with the first microstrip line of the first microstrip element；Described second feed tab is electrically connected with by a feed faciola with the 3rd microstrip line of the second microstrip element.
Wherein, the decoupling of each 3rd microstrip line quantity of windowing is 9, and the length that the decoupling of centre is windowed is the longest, and the length that the decoupling windowed to both sides from middle decoupling is windowed reduces successively.
Wherein, the rectangle pit quantity of each first microstrip line is 29-35.
Wherein, the decoupling of each 3rd microstrip line quantity of windowing is N number of, and the width of rectangle pit is set to K, then length L=9.5N*K of the second microstrip line.
Wherein, being provided with an isolation channel in the middle of described first microstrip element and the second microstrip element, be filled with quasiconductor in described isolation channel, described quasiconductor is silicon dioxide；
Wherein, also including the parasitic oscillator unit being located at PCB reflecting plate away from the side being provided with the first feed tab and the second feed tab, described parasitic oscillator unit includes the first rectangular arm and the second rectangular arm extended from the first rectangular arm to the first microstrip element side；
Wherein, the periphery of PCB reflecting plate is additionally provided with a circle isolation micro-strip circle；
Wherein, described PCB reflecting plate periphery is also enclosed with marine glue, and described RFID chip is located in marine glue；
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 side view of the present invention；
Fig. 2 is the structural representation of the microstrip antenna of the present invention；
Fig. 3 is the structural representation of the first micro-strip；
Fig. 4 is the structural representation of the second micro-strip；
Fig. 5 is the frequency range test figure of the microstrip antenna of the present invention；
Fig. 6 is the microstrip antenna of present invention frequency range test figure under special parameter；
Fig. 7 is the directional diagram of the microstrip antenna of the present invention；
Description of reference numerals in Fig. 1 to Fig. 7:
1-marine glue；2-RFID chip；
G1-PCB reflecting plate；G2-parasitism oscillator unit；G3-isolates micro-strip circle；G4-isolation channel；G51-the first feed tab；G52-the second feed tab；
G61-the first microstrip line；G62-the second microstrip line；G63-the 3rd microstrip line；G64-decoupling is windowed；G65-radiates ring arm；G66-rectangle pit.
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 7, a kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, include the PCB reflecting plate G1 of rectangle, the one side of described PCB reflecting plate G1 is provided with microstrip antenna；The another side of described PCB reflecting plate G1 is provided with RFID chip 2, and RFID chip 2 is connected with microstrip antenna signal, and described microstrip antenna includes the first microstrip element symmetrical above and below, that shape is identical and the second microstrip element；Also include the first feed tab G51 for feed and the second feed tab G52, first feed tab G51 and the second feed tab G52 are located at PCB reflecting plate G1 homonymy, first feed tab G51 is for being connected with the first microstrip element feed, and the second feed tab G52 is for being connected with the second microstrip element feed；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 described in the present embodiment is provided with the RFID label tag of parasitic oscillator unit, and described first microstrip element and the second microstrip element all include the first microstrip line G61, the second microstrip line G62 extended from the first microstrip line G61, the 3rd microstrip line G63 that extends to PCB reflecting plate G1 center from the second microstrip line G62 to PCB reflecting plate G1 center；One end of described first microstrip line G61, one end of the second microstrip line G62, the 3rd microstrip line G63 one end three alignment, the other end of described first microstrip line G61, the other end of the second microstrip line G62, the 3rd microstrip line G63 other end three stepped；Described 3rd microstrip line G63 extends to PCB reflecting plate G1 center multiple arch-shaped radiation ring arm G65；Be equipped with in each radiation ring arm G65 one end be the arc other end be that the decoupling of rectangle is windowed G64；Described first microstrip line G61 is provided with multiple rectangle pit G66 away from the side at PCB reflecting plate G1 center；First microstrip line G61 of described first feed tab G51 and the first microstrip element is electrically connected with；3rd microstrip line G63 of described second feed tab G52 and the second microstrip element is electrically connected with by a feed faciola.Designed by the microstrip circuit structure not less than 550 times, and by being not less than under 500 l-G simulation tests and parameter adjustment, finally determining above-mentioned microstrip antenna structure, this microstrip antenna possesses wider frequency range and preferable isolation and directivity and gain performance.Such as Fig. 5, this beamwidth of antenna available frequency range is up to 1.7GHz to 2.65GHz；Substantially meeting the requirement of communications band, its gain is the highest, and in frequency band, average gain is more than 8.952dBi；Meet actually used needs.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, the decoupling of each 3rd microstrip line G63 G64 quantity of windowing is 9, and the window length of G64 of the decoupling of centre is the longest, reduce successively to the window length of G64 of the decoupling on both sides from the middle decoupling G64 that windows.When meeting this quantity when, its data such as Fig. 6.This integrated antenna system bandwidth available frequency range has reached 1.6GHz to 2.85GHz；Its gain the most substantially increases, and in frequency band, average gain is more than 9.4dBi, compares rising about 0.3dBi；If additionally isolation in its isolation figure frequency band, isolation performance preferably, such as Fig. 6, can be seen that in S3 isolation is more than 25.5dB in frequency range.Its directivity, as described in Figure 7, it is omni-directional antenna.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, the rectangle pit G66 quantity of each first microstrip line G61 is 29-35；A kind of described in the present embodiment is provided with the RFID label tag of parasitic oscillator unit, and the decoupling of each 3rd microstrip line G63 G64 quantity of windowing is N number of, and the width of rectangle pit G66 is set to K, then length L=9.5N*K of the second microstrip line G62.After arranging above-mentioned parameter restriction, being found by great many of experiments and emulation, its gain is more stable, and isolation is also maintained at higher level.Above-mentioned parameter draws in constantly test and adjustment, and it is the most stable design parameter optimal with performance, and concrete actual test is tied HFSS15 computed in software and drawn, this total system beamwidth of antenna available frequency range is at 1.6GHz to 2.8GHz internal frequency modulation；In frequency band, average gain is more than 9.35dBi, and impedance reduces；In frequency range, isolation is more than 26dB；Find in reality is tested, the change of external environment, as temperature, magnetic field impact change within the specific limits, such as temperature amplitude of variation about 10 degree, use above-mentioned parameter and during special value, very by force, frequency range conservation degree is preferable for its stability.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, is provided with an isolation channel G4, is filled with quasiconductor in described isolation channel G4 in the middle of described first microstrip element and the second microstrip element, described quasiconductor is silicon dioxide；Can effectively reduce mutual coupling, strengthen isolation, reduce standing-wave ratio.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, also including parasitic oscillator unit G2 being located at PCB reflecting plate G1 away from the side being provided with the first feed tab G51 and the second feed tab G52, described parasitic oscillator unit G2 includes the first rectangular arm and the second rectangular arm extended from the first rectangular arm to the first microstrip element side；Parasitic oscillator unit G2G2 can be effectively increased bandwidth.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, the periphery of PCB reflecting plate G1 is additionally provided with a circle isolation micro-strip circle G3；It is effectively improved isolation, reduces interference.
A kind of RFID label tag being provided with parasitic oscillator unit described in the present embodiment, described PCB reflecting plate G1 periphery is also enclosed with marine glue 1, and described RFID chip 2 is located in marine glue 1；Water proof and dust proof, improves service life.
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 (5)
1. the RFID label tag being provided with parasitic oscillator unit, it is characterised in that: including the PCB reflecting plate (G1) of rectangle, the one side of described PCB reflecting plate (G1) is provided with microstrip antenna；The another side of described PCB reflecting plate (G1) is provided with RFID chip (2), and RFID chip (2) is connected with microstrip antenna signal, and described microstrip antenna includes the first microstrip element symmetrical above and below, that shape is identical and the second microstrip element；Also include the first feed tab (G51) for feed and the second feed tab (G52), first feed tab (G51) and the second feed tab (G52) are located at PCB reflecting plate (G1) homonymy, first feed tab (G51) is for being connected with the first microstrip element feed, and the second feed tab (G52) is for being connected with the second microstrip element feed；
Also including the parasitic oscillator unit (G2) being located at PCB reflecting plate (G1) away from the side being provided with the first feed tab (G51) and the second feed tab (G52), described parasitic oscillator unit (G2) includes the first rectangular arm and the second rectangular arm extended from the first rectangular arm to the first microstrip element side.
A kind of RFID label tag being provided with parasitic oscillator unit the most according to claim 1, it is characterised in that: described first microstrip element and the second microstrip element all include the first microstrip line (G61), the second microstrip line (G62) extended from the first microstrip line (G61), the 3rd microstrip line (G63) that extends to PCB reflecting plate (G1) center from the second microstrip line (G62) to PCB reflecting plate (G1) center；One end of described first microstrip line (G61), one end of the second microstrip line (G62), the 3rd microstrip line (G63) one end three alignment, the other end of described first microstrip line (G61), the other end of the second microstrip line (G62), the 3rd microstrip line (G63) other end three stepped；Described 3rd microstrip line (G63) extends to PCB reflecting plate (G1) center multiple arch-shaped radiation ring arm (G65)；Be equipped with in each radiation ring arm (G65) one end be the arc other end be that (G64) is windowed in the decoupling of rectangle；Described first microstrip line (G61) is provided with multiple rectangle pit (G66) away from the side at PCB reflecting plate (G1) center；
Described first feed tab (G51) is electrically connected with first microstrip line (G61) of the first microstrip element；Described second feed tab (G52) is electrically connected with by a feed faciola with the 3rd microstrip line (G63) of the second microstrip element.
A kind of RFID label tag being provided with parasitic oscillator unit the most according to claim 2, it is characterized in that: the decoupling of each 3rd microstrip line (G63) (G64) quantity of windowing is 9, and the window length of (G64) of the decoupling of centre is the longest, from middle decoupling window (G64) reduce successively to the window length of (G64) of the decoupling on both sides.
A kind of RFID label tag being provided with parasitic oscillator unit the most according to claim 2, it is characterised in that: rectangle pit (G66) quantity of each first microstrip line (G61) is 29-35.
A kind of RFID label tag being provided with parasitic oscillator unit the most according to claim 2, it is characterized in that: the decoupling setting each 3rd microstrip line (G63) windows (G64) quantity as N number of, the width of rectangle pit (G66) is set to K, then length L=9.5N*K of the second microstrip line (G62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539268.1A CN105938939A (en) | 2016-07-11 | 2016-07-11 | RFID label provided with parasitic vibrator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539268.1A CN105938939A (en) | 2016-07-11 | 2016-07-11 | RFID label provided with parasitic vibrator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105938939A true CN105938939A (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539268.1A Withdrawn CN105938939A (en) | 2016-07-11 | 2016-07-11 | RFID label provided with parasitic vibrator unit |
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| Country | Link |
|---|---|
| CN (1) | CN105938939A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010608A1 (en) * | 2016-07-11 | 2018-01-18 | 谢广鹏 | Rfid tag |
-
2016
- 2016-07-11 CN CN201610539268.1A patent/CN105938939A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010608A1 (en) * | 2016-07-11 | 2018-01-18 | 谢广鹏 | Rfid tag |
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Application publication date: 20160914 |
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| WW01 | Invention patent application withdrawn after publication |