CN106203589A - A kind of double-deck RFID antenna label being provided with shielding microstrip line - Google Patents
A kind of double-deck RFID antenna label being provided with shielding microstrip line Download PDFInfo
- Publication number
- CN106203589A CN106203589A CN201610519069.4A CN201610519069A CN106203589A CN 106203589 A CN106203589 A CN 106203589A CN 201610519069 A CN201610519069 A CN 201610519069A CN 106203589 A CN106203589 A CN 106203589A
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- CN
- China
- Prior art keywords
- arm
- radiation
- pcb board
- microstrip line
- double
- 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
- G06K19/0772—Physical layout of the record carrier
-
- 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
-
- 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
- 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
- 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
- H01Q1/526—Electromagnetic shields
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of double-deck RFID antenna label being provided with shielding microstrip line, include that be superimposed up and down, be all the first pcb board and second pcb board of rectangle, the lateral length of the second pcb board is longer than the first pcb board;First pcb board and the second pcb board longitudinally wide identical;Described first pcb board end face is provided with two symmetrical first microstrip element oscillators;Described second pcb board end face is provided with two symmetrical second microstrip element oscillators;The bottom surface of described second pcb board is provided with RFID chip;Described RFID chip feeds with the first microstrip element oscillator and the second microstrip element oscillator and is of coupled connections;By reasonably arranging, the present invention has preferable RFID label tag characteristic, and distance is remote, performance excellence in terms of antenna performance.
Description
Technical field
The present invention relates to a kind of double-deck RFID antenna label being provided with shielding microstrip line.
Background technology
At present, RF identification i.e. RFID(Radio Frequency Identification) technology, also known as electronic tag,
Radio frequency identification, is that one can be passed through radio signals identification specific objective and read and write related data, and without identifying system
And set up machinery or the communication technology of optical contact between specific objective.Conventional passive RFID have low frequency (125k ~
134.2K), high frequency (13.56Mhz), hyperfrequency (860-960MHz).RFID label antenna is as the important composition of rfid system
Part, its performance is by the efficiency of whole for strong influence rfid system and quality.Affect the principal element of RFID antenna performance
Including size, working frequency range, impedance and the gain etc. of antenna, therefore, if it is desirable to the antenna of a preferable RFID, just should
There is 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 be provided with shielding microstrip line double-deck RFID days
Line label.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of double-deck RFID antenna being provided with shielding microstrip line
Label, include that be superimposed up and down, be all the first pcb board and second pcb board of rectangle, the second pcb board horizontal long
Spend longer than the first pcb board;First pcb board and the second pcb board longitudinally wide identical;Described first pcb board end face is provided with two
Individual symmetrical first microstrip element oscillator;Described second pcb board end face is provided with two symmetrical second micro-strip lists
Unit's oscillator;The bottom surface of described second pcb board is provided with RFID chip;Described RFID chip and the first microstrip element oscillator and second
Microstrip element oscillator feed is of coupled connections.
Wherein, described first microstrip element oscillator includes the first feed trailing arm, and described first feed trailing arm extends to be had
Article two, the first radiation transverse arm be arrangeding in parallel;Each first radiation transverse arm has all extended outward parasitic oscillator unit, each posts
Raw oscillator unit includes the external radiation arm of rectangle, and two vertical arms of external radiation arm all extend internally out the interior of multiple rectangle
Radiation arm;Two described first radiation transverse arms are provided with Z-shaped linking arm, two described Z-shaped companies away from first one end feeding trailing arm
The other end connecing arm connects the first circular arc radiation arm being formed with arc;Also include the second circular arc radiation arm of arc-shaped, the
Connect between one circular arc radiation arm and the second circular arc radiation arm and have two cross structures be arrangeding in parallel, described second circular arc radiation arm
Two ends be equipped with L-shaped radiation under, Z-shaped linking arm is provided with the L-shaped coupling slot for accommodating L-shaped radiation under;
Described second microstrip element oscillator includes the second feed trailing arm, also includes the second radiation transverse arm, described second radiation
One end of transverse arm is connected with the second feed trailing arm, and the other end of the second radiation transverse arm is connected with the gain bar of T-shaped, described gain
Two ends of the transverse arm of bar are equipped with longitudinal radiation under;Being additionally provided with two power feed hole on described first pcb board, each power feed hole is used
Couple feed is carried out in the second corresponding microstrip element oscillator.
Wherein, the interior radiation arm quantity in described each external radiation arm is four.
Wherein, the radius of the second circular arc radiation arm is L1, and the radius of the first circular arc radiation arm is L2, then L2=L1*1.35.
Wherein, the periphery of described first pcb board is provided with a circle shielding microstrip line.
Wherein, the periphery of described second pcb board is provided with a circle shielding microstrip line.
Wherein, two described first radiation transverse arms all extend internally out T-shaped radiation under, each T-shaped radiation under horizontal
The outside of arm is arcuation;Wherein, longitudinal radiation under is provided with semicircle parasitic patch;
Wherein, the bottom surface of described second pcb board being also packaged with encapsulation part, RFID chip is located in the portion of sealing;
Wherein, described second pcb board end face being additionally provided with two symmetrical rectangle parasitic patch, described rectangle parasitic patch is close
The side of the second radiation transverse arm is provided with the petal parasitic patch of multiple semicircular in shape, and described rectangle parasitic patch is away from the second radiation transverse arm
Side be provided with a trapeze cut;
The invention have the benefit that, by reasonably arranging, the present invention has preferable RFID label tag characteristic, distance is remote,
Antenna performance aspect performance excellence.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention;
Fig. 2 is the top view of the present invention;
Fig. 3 is the first pcb board and the top view of the second pcb board of the present invention;
Fig. 4 is the structural representation of the first microstrip element oscillator of the present invention;
Fig. 5 is the datagram of the standing-wave ratio of the present invention
Fig. 6 is the datagram of the return loss of the present invention
Description of reference numerals in Fig. 1 to Fig. 6:
N1-the first pcb board;N11-first feeds trailing arm;N12-first radiates transverse arm;N13-external radiation arm;N14-T shape radiates
Bar;N15-Z shape linking arm;N16-L shape radiation under;N17-the second circular arc radiation arm;N18-the first circular arc radiation arm;N19-connects
Bridge;
N2-the second pcb board;N21-second feeds trailing arm;N22-second radiates transverse arm;N23-gain bar;N24-longitudinal direction radiation under;
N25-semicircle parasitic patch;
N3-power feed hole;
N4-rectangle parasitic patch;N5-RFID chip;N6-encapsulation part;N7-shielding microstrip line.
Detailed description of the invention
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings, is not the reality of the present invention
The scope of executing is confined to this.
As shown in Figures 1 to 6, a kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, bag
Include that be superimposed up and down, be all the first pcb board N1 and the second pcb board N2 of rectangle, the lateral length of the second pcb board N2
Longer than the first pcb board N1;First pcb board N1's and the second pcb board N2 is longitudinally wide identical;On described first pcb board N1 end face
It is provided with two symmetrical first microstrip element oscillators;Described second pcb board N2 end face is provided with two symmetrical
Two microstrip element oscillators;The bottom surface of described second pcb board N2 is provided with RFID chip N5;Described RFID chip N5 and the first micro-strip
Unit oscillator and the second microstrip element oscillator feed are of coupled connections;The present invention has preferable RFID label tag characteristic, and distance is remote,
Antenna performance aspect performance excellence.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described first microstrip element shakes
Son includes the first feed trailing arm N11, described first feed trailing arm N11 and extends the first radiation transverse arm having two to be arranged in parallel
N12;Each first radiation transverse arm N12 has all extended outward parasitic oscillator unit, and each parasitic oscillator unit includes rectangle
Two vertical arms of external radiation arm N13, external radiation arm N13 all extend internally out the interior radiation arm of multiple rectangle;Two institutes
State the first radiation transverse arm N12 and be provided with Z-shaped linking arm N15, two described Z-shaped linking arms away from first one end feeding trailing arm N11
The other end of N15 connects the first circular arc radiation arm N18 being formed with arc;Also include the second circular arc radiation arm of arc-shaped
N17, connects between the first circular arc radiation arm N18 and the second circular arc radiation arm N17 and has two cross structure N19 be arrangeding in parallel, institute
State two ends of the second circular arc radiation arm N17 to be equipped with L-shaped radiation under N16, Z-shaped linking arm N15 and be provided with for accommodating L-shaped spoke
The L-shaped coupling slot of Rhizoma Belamcandae N16;Described second microstrip element oscillator includes the second feed trailing arm N21, also includes the second radiation
Transverse arm N22, one end of described second radiation transverse arm N22 is connected with the second feed trailing arm N21, and second radiates another of transverse arm N22
End is connected with the gain bar N23 of T-shaped, and two ends of the transverse arm of described gain bar N23 are equipped with longitudinal radiation under N24;Described
Being additionally provided with two power feed hole N3 on first pcb board N1, each power feed hole N3 is entered for the second corresponding microstrip element oscillator
Row couple feed;Owing to employing the double layer design of two pcb boards, it, in the case of ensureing gain, substantially reduces standing wave
Ratio and interfering with each other property;Gyroscope and Network Analyzer and electricity is utilized to adjust its data of analysis as follows, due 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, illustrates at frequency
In band, its gain performance is the most perfect, it addition, as the performance in terms of Fig. 6, device return loss is protruded, have it at wider frequency band
Inside being maintained at about-35dB, the return loss at whole high band is held in below-10dB, and water is similar average more than other
Antenna level;Further, since the well-designed of structure, its standing-wave ratio performance is the most excellent, as it is shown in figure 5, its whole frequency band
Interior standing-wave ratio is all within 1.25, and some frequency range is even up to about 1.1.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described each external radiation arm
Interior radiation arm quantity in N13 is four.The interior radiation arm of this quantity, after Network Analyzer is analyzed, finds that this quantity is optimal.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, the second circular arc radiation arm N17
Radius be L1, the radius of the first circular arc radiation arm N18 is L2, then L2=L1*1.35.Designed by the loops of the most lower 500 times and
Coupling experiment, finds meet its standing-wave ratio of radiation arm of this formula and front and back reach optimum than all, close to 1.1, and gain
Performance is the highest, and omni-directional is optimal.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described first pcb board N1's
Periphery is provided with a circle shielding microstrip line N7;Increase shielding properties, reduce external interference.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described second pcb board N2's
Periphery is provided with a circle shielding microstrip line;Increase shielding properties, reduce external interference.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, two described first radiation horizontal strokes
Arm N12 all extends internally out T-shaped radiation under N14, and the outside of the transverse arm of each T-shaped radiation under N14 is arcuation;Wherein, vertical
It is provided with semicircle parasitic patch N25 to radiation under N24;Can effectively reduce mutual coupling, strengthen isolation, reduce standing-wave ratio.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described second pcb board N2's
Also being packaged with encapsulation part N6 on bottom surface, RFID chip N5 is located in the portion of sealing;Waterproof for chip of the portion that seals, dust-proof etc..Separately
Outward, the portion of sealing can also be located on microstrip antenna, prevents microstrip antenna from aoxidizing, affects antenna performance.
A kind of double-deck RFID antenna label being provided with shielding microstrip line described in the present embodiment, described second pcb board N2 top
Being additionally provided with two symmetrical rectangle parasitic patch N4 on face, described rectangle parasitic patch N4 is near the one of the second radiation transverse arm N22
Side is provided with the petal parasitic patch of multiple semicircular in shape, and described rectangle parasitic patch N4 is provided with away from the side of the second radiation transverse arm N22
One trapeze cut;Antenna stabilization can be improved, improve entirety cooperation performance, reduce standing-wave ratio.
The above is only a preferred embodiment of the present invention, therefore all according to the structure described in present patent application scope
Make, equivalence change that feature and principle are done or modify, be included in the protection domain of present patent application.
Claims (7)
1. the double-deck RFID antenna label being provided with shielding microstrip line, it is characterised in that: include that be superimposed up and down,
Being all the first pcb board (N1) and second pcb board (N2) of rectangle, the lateral length of the second pcb board (N2) is than the first pcb board (N1)
Long;First pcb board (N1) is longitudinally wide identical with the second pcb board (N2);Described first pcb board (N1) end face is provided with two
Symmetrical first microstrip element oscillator;Described second pcb board (N2) end face is provided with two symmetrical second micro-strip
Unit oscillator;The bottom surface of described second pcb board (N2) is provided with RFID chip (N5);Described RFID chip (N5) and the first micro-strip
Unit oscillator and the second microstrip element oscillator feed are of coupled connections;
The periphery of described first pcb board (N1) is provided with a circle shielding microstrip line (N7).
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 1, it is characterised in that: described
First microstrip element oscillator includes the first feed trailing arm (N11), described first feed trailing arm (N11) extend have two parallel
The first radiation transverse arm (N12) arranged;Each first radiation transverse arm (N12) has all extended outward parasitic oscillator unit, each
Parasitic oscillator unit includes the external radiation arm (N13) of rectangle, and two vertical arms of external radiation arm (N13) all extend internally out
The interior radiation arm of multiple rectangles;Two described first radiation transverse arm (N12) are provided with Z away from first one end feeding trailing arm (N11)
Shape linking arm (N15), the other end of two described Z-shaped linking arms (N15) connects the first circular arc radiation arm being formed with arc
(N18);Also include the second circular arc radiation arm (N17) of arc-shaped, the first circular arc radiation arm (N18) and the second circular arc radiation arm
(N17) connecting between has two cross structures be arrangeding in parallel (N19), two ends of described second circular arc radiation arm (N17) to be all provided with
L-shaped radiation under (N16), Z-shaped linking arm (N15) is had to be provided with the L-shaped coupling slot for accommodating L-shaped radiation under (N16);
Described second microstrip element oscillator includes the second feed trailing arm (N21), also includes the second radiation transverse arm (N22), institute
The one end stating the second radiation transverse arm (N22) is connected with the second feed trailing arm (N21), and the other end of the second radiation transverse arm (N22) is even
Being equipped with the gain bar (N23) of T-shaped, two ends of the transverse arm of described gain bar (N23) are equipped with longitudinal radiation under (N24);Institute
Stating and be additionally provided with two power feed hole (N3) on the first pcb board (N1), each power feed hole (N3) is for the second corresponding micro-strip list
Unit's oscillator carries out couple feed.
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 2, it is characterised in that: described
Interior radiation arm quantity in each external radiation arm (N13) is four.
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 2, it is characterised in that: second
The radius of circular arc radiation arm (N17) is L1, and the radius of the first circular arc radiation arm (N18) is L2, then L2=L1*1.35.
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 2, it is characterised in that: two
Described first radiation transverse arm (N12) all extends internally out T-shaped radiation under (N14), the transverse arm of each T-shaped radiation under (N14)
Outside be arcuation.
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 2, it is characterised in that: described
The periphery of the second pcb board (N2) is provided with a circle shielding microstrip line.
A kind of double-deck RFID antenna label being provided with shielding microstrip line the most according to claim 2, it is characterised in that: longitudinally
Radiation under (N24) is provided with semicircle parasitic patch (N25).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610519069.4A CN106203589A (en) | 2016-07-05 | 2016-07-05 | A kind of double-deck RFID antenna label being provided with shielding microstrip line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610519069.4A CN106203589A (en) | 2016-07-05 | 2016-07-05 | A kind of double-deck RFID antenna label being provided with shielding microstrip line |
Publications (1)
Publication Number | Publication Date |
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CN106203589A true CN106203589A (en) | 2016-12-07 |
Family
ID=57464672
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Application Number | Title | Priority Date | Filing Date |
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CN201610519069.4A Withdrawn CN106203589A (en) | 2016-07-05 | 2016-07-05 | A kind of double-deck RFID antenna label being provided with shielding microstrip line |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106953174A (en) * | 2017-03-21 | 2017-07-14 | 厦门致联科技有限公司 | One kind is anti-to misread antenna |
-
2016
- 2016-07-05 CN CN201610519069.4A patent/CN106203589A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106953174A (en) * | 2017-03-21 | 2017-07-14 | 厦门致联科技有限公司 | One kind is anti-to misread antenna |
CN106953174B (en) * | 2017-03-21 | 2023-04-28 | 厦门致联科技有限公司 | Misreading prevention antenna |
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Application publication date: 20161207 |