CN106025493A - Double-layer RFID antenna tag - Google Patents
Double-layer RFID antenna tag Download PDFInfo
- Publication number
- CN106025493A CN106025493A CN201610518950.2A CN201610518950A CN106025493A CN 106025493 A CN106025493 A CN 106025493A CN 201610518950 A CN201610518950 A CN 201610518950A CN 106025493 A CN106025493 A CN 106025493A
- Authority
- CN
- China
- Prior art keywords
- arm
- radiation
- pcb board
- double
- shaped
- 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
- G06K19/07722—Physical layout of the record carrier the record carrier being multilayered, e.g. laminated sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
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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
- 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
Abstract
The present invention discloses a double-layer RFID antenna tag, which comprises a first PCB and a second PCB, wherein the first PCB and the second PCB are vertically stacked together and are both rectangular. The transverse length of the second PCB is larger than that of the first PCB. The longitudinal width of the first PCB is equal to the longitudinal width of the second PCB. The top surface of the first PCB is provided with two bilaterally symmetric first microstrip unit oscillators. The top surface of the second PCB is provided with two bilaterally symmetric second microstrip unit oscillators. The bottom surface of the second PCB is provided with an RFID chip. The RFID chip is in feed coupling and connection with the first microstrip unit oscillators and the second microstrip unit oscillators. Due to the above reasonable arrangement, the double-layer RFID antenna tag is good in RFID tag characteristics, long in distance and excellent in antenna performance.
Description
Technical field
The present invention relates to a kind of double-deck RFID antenna label.
Background technology
At present, 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 double-deck RFID antenna label.
For achieving the above object, the concrete scheme of the present invention is as follows: a kind of double-deck RFID antenna label, 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.
Wherein, described first microstrip element oscillator includes the first feed trailing arm, and described first feed trailing arm extends the first radiation transverse arm having two to be arranged in parallel；Each first radiation transverse arm has all extended outward parasitic oscillator unit, and each parasitic oscillator unit includes the external radiation arm of rectangle, and two vertical arms of external radiation arm all extend internally out the interior radiation arm of multiple rectangle；Two described first radiation transverse arms are provided with Z-shaped linking arm away from first one end feeding trailing arm, and the other end of two described Z-shaped linking arms connects the first circular arc radiation arm being formed with arc；Also include the second circular arc radiation arm of arc-shaped, connect between first circular arc radiation arm and the second circular arc radiation arm and have two cross structures be arrangeding in parallel, two ends of described second circular arc radiation arm are equipped with L-shaped radiation under, and 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 include the second radiation transverse arm, one end of described second radiation transverse arm is connected with the second feed trailing arm, the other end of the second radiation transverse arm is connected with the gain bar of T-shaped, and two ends of the transverse arm of described gain bar are equipped with longitudinal radiation under；Being additionally provided with two power feed hole on described first pcb board, each power feed hole carries out couple feed for 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, and the outside of the transverse arm of each T-shaped radiation under 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, two symmetrical rectangle parasitic patch it are additionally provided with on described second pcb board end face, described rectangle parasitic patch is provided with the petal parasitic patch of multiple semicircular in shape near the side of the second radiation transverse arm, and described rectangle parasitic patch is provided with a trapeze cut away from the side of the second radiation transverse arm；
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 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 radiation under；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-cross structure；
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 that the practical range of the present invention is confined to this.
As shown in Figures 1 to 6, a kind of double-deck RFID antenna label described in the present embodiment, 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 is longer than the first pcb board N1；First pcb board N1's and the second pcb board N2 is longitudinally wide identical；Described first pcb board N1 end face is provided with two symmetrical first microstrip element oscillators；Described second pcb board N2 end face is provided with two symmetrical second 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 microstrip element 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, performance excellence in terms of antenna performance.
A kind of double-deck RFID antenna label described in the present embodiment, described first microstrip element oscillator includes the first feed trailing arm N11, described first feed trailing arm N11 and extends the first radiation transverse arm N12 having two to be arranged in parallel；Each first radiation transverse arm N12 has all extended outward parasitic oscillator unit, and two vertical arms of external radiation arm N13, external radiation arm N13 that each parasitic oscillator unit includes rectangle all extend internally out the interior radiation arm of multiple rectangle；Two described first radiation transverse arm N12 are provided with the other end of Z-shaped linking arm N15, two described Z-shaped linking arm N15 away from one end of the first feed trailing arm N11 and connect and be formed with the first circular arc radiation arm N18 of arc；Also include the second circular arc radiation arm N17 of arc-shaped, connect between first circular arc radiation arm N18 and the second circular arc radiation arm N17 and have two cross structure N19 be arrangeding in parallel, two ends of described second circular arc radiation arm N17 are equipped with L-shaped radiation under N16, Z-shaped linking arm N15 and are 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 include the second radiation transverse arm N22, one end of described second radiation transverse arm N22 is connected with the second feed trailing arm N21, the other end of the second radiation transverse arm N22 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；Being additionally provided with two power feed hole N3 on described first pcb board N1, each power feed hole N3 carries out couple feed for the second corresponding microstrip element oscillator；Owing to employing the double layer design of two pcb boards, it substantially reduces standing-wave ratio and interfering with each other property in the case of ensureing gain；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 double-deck RFID antenna label described in the present embodiment, the interior radiation arm quantity in described each external radiation arm 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 described in the present embodiment, the radius of the second 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.Being designed and coupling experiment by the loops of the most lower 500 times, find 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 described in the present embodiment, the periphery of described first pcb board N1 is provided with a circle shielding microstrip line N7；Increase shielding properties, reduce external interference.
A kind of double-deck RFID antenna label described in the present embodiment, the periphery of described second pcb board N2 is provided with a circle shielding microstrip line；Increase shielding properties, reduce external interference.
A kind of double-deck RFID antenna label described in the present embodiment, two described first radiation transverse arm N12 all extend internally out T-shaped radiation under N14, and the outside of the transverse arm of each T-shaped radiation under N14 is arcuation；Wherein, longitudinal radiation under N24 is provided with semicircle parasitic patch N25；Can effectively reduce mutual coupling, strengthen isolation, reduce standing-wave ratio.
A kind of double-deck RFID antenna label described in the present embodiment, the bottom surface of described second pcb board N2 is also packaged with encapsulation part N6, and RFID chip N5 is located in the portion of sealing；Waterproof for chip of the portion that seals, dust-proof etc..Can also be located on microstrip antenna it addition, seal portion, prevent microstrip antenna from aoxidizing, affect antenna performance.
A kind of double-deck RFID antenna label described in the present embodiment, it is additionally provided with two symmetrical rectangle parasitic patch N4 on described second pcb board N2 end face, described rectangle parasitic patch N4 is provided with the petal parasitic patch of multiple semicircular in shape near the side of the second radiation transverse arm N22, and described rectangle parasitic patch N4 is provided with a trapeze cut away from the side of the second radiation transverse arm N22；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 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 (8)
1. a double-deck RFID antenna label, it is characterised in that: include that be superimposed up and down, be all the first pcb board (N1) and second pcb board (N2) of rectangle, the lateral length of the second pcb board (N2) is longer than the first pcb board (N1)；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 oscillators；Described second pcb board (N2) end face is provided with two symmetrical second microstrip element oscillators；The bottom surface of described second pcb board (N2) is provided with RFID chip (N5)；Described RFID chip (N5) feeds with the first microstrip element oscillator and the second microstrip element oscillator and is of coupled connections；
The periphery of described first pcb board (N1) is provided with a circle shielding microstrip line (N7).
2. the periphery of the first pcb board (N1) described in is provided with a circle shielding microstrip line (N7).Also being packaged with encapsulation part (N6) on the bottom surface of described second pcb board (N2), RFID chip (N5) is located in the portion of sealing；
Two symmetrical rectangle parasitic patch (N4) it are additionally provided with on described second pcb board (N2) end face, described rectangle parasitic patch (N4) is provided with the petal parasitic patch of multiple semicircular in shape near the side of the second radiation transverse arm (N22), and described rectangle parasitic patch (N4) is provided with a trapeze cut away from the side of the second radiation transverse arm (N22).
A kind of double-deck RFID antenna label the most according to claim 1, it is characterized in that: described first microstrip element oscillator includes the first feed trailing arm (N11), described first feed trailing arm (N11) extends the first radiation transverse arm (N12) having two to be arranged in parallel；Each first radiation transverse arm (N12) has all extended outward parasitic oscillator unit, and 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 rectangle；Two described first radiation transverse arm (N12) are provided with Z-shaped linking arm (N15) away from first one end feeding trailing arm (N11), and the other end of two described Z-shaped linking arms (N15) connects the first circular arc radiation arm (N18) being formed with arc；Also include the second circular arc radiation arm (N17) of arc-shaped, it is connected between first circular arc radiation arm (N18) with the second circular arc radiation arm (N17) and has two cross structures be arrangeding in parallel (N19), two ends of described second circular arc radiation arm (N17) are equipped with L-shaped radiation under (N16), and Z-shaped linking arm (N15) is 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 include the second radiation transverse arm (N22), one end of described second radiation transverse arm (N22) is connected with the second feed trailing arm (N21), the other end of the second radiation transverse arm (N22) 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)；Being additionally provided with two power feed hole (N3) on described first pcb board (N1), each power feed hole (N3) carries out couple feed for the second corresponding microstrip element oscillator.
A kind of double-deck RFID antenna label the most according to claim 2, it is characterised in that: the interior radiation arm quantity in described each external radiation arm (N13) is four.
A kind of double-deck RFID antenna label the most according to claim 2, it is characterised in that: the radius of the second 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 the most according to claim 2, it is characterised in that: two described first radiation transverse arm (N12) all extend internally out T-shaped radiation under (N14), and the outside of the transverse arm of each T-shaped radiation under (N14) is arcuation.
A kind of double-deck RFID antenna label the most according to claim 2, it is characterised in that: the periphery of described second pcb board (N2) is provided with a circle shielding microstrip line.
A kind of double-deck RFID antenna label the most according to claim 2, it is characterised in that: longitudinal radiation under (N24) is provided with semicircle parasitic patch (N25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518950.2A CN106025493A (en) | 2016-07-05 | 2016-07-05 | Double-layer RFID antenna tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518950.2A CN106025493A (en) | 2016-07-05 | 2016-07-05 | Double-layer RFID antenna tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106025493A true CN106025493A (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610518950.2A Withdrawn CN106025493A (en) | 2016-07-05 | 2016-07-05 | Double-layer RFID antenna tag |
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| Country | Link |
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| CN (1) | CN106025493A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082370A1 (en) * | 2016-11-04 | 2018-05-11 | 江健良 | Solar power station patrol vehicle |
| WO2018082376A1 (en) * | 2016-11-04 | 2018-05-11 | 江健良 | Power station automatic patrol vehicle |
-
2016
- 2016-07-05 CN CN201610518950.2A patent/CN106025493A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082370A1 (en) * | 2016-11-04 | 2018-05-11 | 江健良 | Solar power station patrol vehicle |
| WO2018082376A1 (en) * | 2016-11-04 | 2018-05-11 | 江健良 | Power station automatic patrol vehicle |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161012 |
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| WW01 | Invention patent application withdrawn after publication |