CN105742785A - Broadband and high-gain RFID tag antenna - Google Patents
Broadband and high-gain RFID tag antenna Download PDFInfo
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- CN105742785A CN105742785A CN201610201301.XA CN201610201301A CN105742785A CN 105742785 A CN105742785 A CN 105742785A CN 201610201301 A CN201610201301 A CN 201610201301A CN 105742785 A CN105742785 A CN 105742785A
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- bowtie
- metal patch
- shaped metal
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
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Abstract
The invention discloses a broadband and high-gain RFID tag antenna, which comprises metal patches, a dielectric substrate and an RFID tag chip, wherein the RFID tag chip is arranged on the upper surface of the dielectric substrate; and the centrosymmetric metal patches with a special shape are arranged at two sides of the RFID tag chip, so that broadband working and high-gain radiation are achieved. The broadband and high-gain RFID tag antenna can be applied to an RFID security traceability system, and has the advantages that the broadband and high-gain RFID tag antenna is suitable for an international main commercial ultra-high frequency RFID frequency band, achieves international goods security traceability, is convenient to process and extremely low in cost and has relatively high practical value.
Description
Technical field
The invention belongs to the technical field of RFID label antenna, relate to a kind of wide-band high gain RFID label antenna.
Background technology
RFID (RadioFrequencyIdentification) is a kind of emerging automatic identification technology, it has that data transmission is fast, cost is low, read apart from many advantages such as remote, it is widely used in the numerous areas such as logistics, retail business and communications, it is effectively improved the efficiency of management, and it is greatly saved human cost, the huge economic worth for social creativity.Along with the continuous expansion of application demand, ultra-high frequency RFID label antenna technology is also at continuous development and progress.The difference that ultrahigh frequency RFID system specifies according to every country now, its working frequency range is also different.The U.S. (US) frequency range is 902 928MHz, European Union (EU) frequency range is 865 867.6MHz, and China's frequency range is 840-845MHz, in such background, RFID is false proof reviews the large-scale international goods transfer ground on customs, airport etc., still suffers from very big challenge.On the one hand, large cargo requires farther decipherment distance and the less identification bit error rate.On the other hand, owing to the global standards of ultrahigh frequency RFID are not yet reached an agreement, from the goods of every country and area, its label has different standards systems, it is difficult to accurately identify by set of system.
Only from label antenna, the two aspect requires that the bandwidth of RFID label antenna is bigger, and gain is higher, better with mating of label IC chip.Therefore this patent design provides the RFID label antenna of a novel wide-band high-gain, reviews demand adapting to the false proof of large-scale international goods.
Summary of the invention
It is an object of the invention to the deficiency overcoming above-mentioned prior art to exist, the RFID label antenna of a kind of wide-band high gain is provided, under the premise realizing the label antenna multiple working frequency range standards of adaptation, realize the radiation of its high-gain simultaneously, be conveniently used for the false proof of large-scale international goods and review.
For achieving the above object, the present invention adopts the technical scheme that: the RFID label antenna of a kind of wide-band high gain, including metal patch, medium substrate and RFID label chip；Described metal patch is prepared in the front of medium substrate, and metal patch includes about one the big bowtie-shaped metal patch being mirrored into symmetry and about one the little bow-tie type metal patch becoming central point；Described big bowtie-shaped metal patch intermediate etch has I-shaped gap, and during four hypotenuses are outer, side is etched with four rectangular slot；Described little bowtie-shaped metal patch outline become two trapezoidal, and be connected to two outer point midways of big bowtie-shaped metal patch by upper vertical segment section and lower vertical segment；Described RFID label chip is welded on two interior point midways of big bowtie-shaped metal patch.
Further, described little bowtie-shaped metal patch top and the bottom are respectively etched with two gaps encompassing two trapezoidal profiles, and then respectively form profile in metal patch top and the bottom be two trapezoidal upper metal wires, upper trapezoid sheet metal, profile be two trapezoidal lower metal wires and lower trapezoid sheet metal；Described upper metal wire top is connected to the upper left side of vertical line, terminal terminates at the lower left side of part on little bowtie-shaped metal patch；Described upper trapezoid sheet metal lower limb intermediate point is connected with the upper end of upper vertical line；Described lower metal wire, lower trapezoid sheet metal are scattered in central point with upper metal wire, upper trapezoid sheet metal.
Further, described big bowtie-shaped metal patch produces the radiation function of low-frequency range, and four outer drift angles of big bowtie-shaped metal patch and four interior cornering angle in I-shaped gap have been done corner cut and processed the scattering loss reducing low-frequency range；Described little bowtie-shaped metal patch produces the radiation function of high band, and four outer drift angles of little bowtie-shaped metal patch have also been made corner cut and process the scattering loss to reduce high band.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention is adopted particulate metal paster structure being centrosymmetric, the parallel coupled effect that this structure is formed can be effectively improved the bandwidth of antenna, described wide-band high gain RFID label antenna is enable to cover the commercial ultrahigh frequency RFID frequency range (840MHz～928MHz) of the U.S., European Union and China, and in this frequency range, reach engine request standard, read apart from farther, to read effect more stable.
(2) present configuration is simple, easy to process, it is only necessary to etches copper sheet on medium substrate, effectively reduces the processing cost of RFID label antenna.
(3) present invention can select substrate thin as far as possible, it is achieved that the miniaturization of antenna, facilitates label antenna use on large-scale international goods.
The purpose of the present invention, feature and advantage will in conjunction with the embodiments, do explanation further below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the side view of the wide-band high gain RFID label antenna of the present invention.
Fig. 2 is the front view of the wide-band high gain RFID label antenna of the present invention.
Fig. 3 is the reflection coefficient curve of the wide-band high gain RFID label antenna of the present invention.
Detailed description of the invention
As shown in the side view of Fig. 1 and the front view of Fig. 2, a kind of wide-band high gain RFID label antenna, including metal patch 1, medium substrate 2 and RFID label chip 3, described metal patch 1 prepares the front at the F4B medium substrate 2 that thickness is 0.5mm, and metal patch 1 includes a symmetrical big bowtie-shaped metal patch 11 and about one little bow-tie type metal patch 12 in a center of symmetry；The I-shaped gap 13 that described big bowtie-shaped metal patch 11 intermediate etch has width to be 3.5mm, during four hypotenuses are outer, side is etched with four sizes and is the rectangular slot 14 of 3.0mm*2.2mm；Described little bowtie-shaped metal patch 12 outline become two trapezoidal, and two outer point midways of big bowtie-shaped metal patch 11 it are connected to by upper vertical segment 15 and lower vertical segment 16, the little each part dimension of bowtie-shaped metal patch 12 slightly adjusts according to real needs difference；Described RFID label chip 3 is welded on two interior point midways of big bowtie-shaped metal patch 11.
Further, described little bowtie-shaped metal patch 12 top and the bottom are respectively etched with two and encompass trapezoidal gap, the width in etching gap is 0.6mm, and respectively form profile in metal patch 12 top and the bottom be two trapezoidal upper metal wires 17, upper trapezoid sheet metal 18, profile be two trapezoidal lower metal wires 19 and lower trapezoid sheet metal 20, the size of the little each parts of bowtie-shaped metal patch 12 slightly adjusts according to real needs difference；Described upper metal wire 17 top is connected to the upper left side of vertical line 15, terminal terminates at the lower left side of part on little bowtie-shaped metal patch 12；Described upper trapezoid sheet metal 18 lower limb intermediate point is connected with the upper end of upper vertical line 15；Described lower metal wire 19, lower trapezoid sheet metal 20 are scattered in central point with upper metal wire 17, upper trapezoid sheet metal 18.
Further, described big bowtie-shaped metal patch 11 produces the radiation function of low-frequency range, four outer drift angles of big bowtie-shaped metal patch 11 and four interior cornering angle in I-shaped gap 13 have been done corner cut and have been processed the scattering loss reducing low-frequency range, and the positions and dimensions of corner cut slightly adjusts according to concrete application demand；Described little bowtie-shaped metal patch 12 produces the radiation function of high band, and four outer drift angles of little bowtie-shaped metal patch 12 have also been made corner cut and process the scattering loss to reduce high band, and the positions and dimensions of corner cut slightly adjusts according to concrete application demand.
Fig. 3 is the emission ratio curve of the specific embodiment of the invention, and the reflection coefficient absolute bandwidth of its-10dB is 383MHz (686MHz～1069MHz), completely covers whole world RFIDnt ultra-high frequency frequency band.The maximum gain of this label antenna is 3.3dBi, is better than most of RFID antenna of existing report.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in reader understanding's principles of the invention, it should be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete deformation and combination without departing from the present invention according to these technology disclosed by the invention enlightenment, and these deformation and combination remain in protection scope of the present invention.
Claims (3)
1. a wide-band high gain RFID label antenna, including metal patch (1), medium substrate (2) and RFID label chip (3), it is characterized in that: described metal patch (1) is prepared in the front of medium substrate (2), metal patch (1) includes about one the big bowtie-shaped metal patch (11) being mirrored into symmetry and becomes the little bow-tie type metal patch (12) of central point with about one；Described big bowtie-shaped metal patch (11) intermediate etch has I-shaped gap (13), and during four hypotenuses are outer, side is etched with four rectangular slot (14)；Described little bowtie-shaped metal patch (12) outline become two trapezoidal, and be connected to two outer point midways of big bowtie-shaped metal patch (11) by upper vertical segment (15) section and lower vertical segment (16)；Described RFID label chip (3) is welded on two interior point midways of big bowtie-shaped metal patch (11).
2. a kind of wide-band high gain RFID label antenna according to claim 1, it is characterized in that: described little bowtie-shaped metal patch (12) top and the bottom are respectively etched with two gaps encompassing trapezoidal profile, and then respectively form profile in little bowtie-shaped metal patch (12) top and the bottom be two trapezoidal upper metal wires (17), upper trapezoid sheet metal (18), profile be two trapezoidal lower metal wires (19) and lower trapezoid sheet metal (20)；Described upper metal wire (17) top is connected to the upper left side of vertical line (15), terminal terminates at the upper lower left side partly of little bowtie-shaped metal patch (12)；Described upper trapezoid sheet metal (18) lower limb intermediate point is connected with the upper end of upper vertical line (15)；Described lower metal wire (19), lower trapezoid sheet metal (20) become central point respectively with upper metal wire (17), upper trapezoid sheet metal (18).
3. a kind of wide-band high gain RFID label antenna according to claim 1, it is characterized in that: described big bowtie-shaped metal patch (11) produces the radiation function of low-frequency range, four outer drift angles of big bowtie-shaped metal patch (11) and four interior cornering angle of I-shaped gap (13) have been done corner cut and have been processed the scattering loss reducing low-frequency range；Described little bowtie-shaped metal patch (12) produces the radiation function of high band, and four outer drift angles of little bowtie-shaped metal patch (12) have also been made corner cut and process the scattering loss to reduce high band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610201301.XA CN105742785B (en) | 2016-03-31 | 2016-03-31 | A kind of wide-band high gain RFID label antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610201301.XA CN105742785B (en) | 2016-03-31 | 2016-03-31 | A kind of wide-band high gain RFID label antenna |
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| Publication Number | Publication Date |
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| CN105742785A true CN105742785A (en) | 2016-07-06 |
| CN105742785B CN105742785B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610201301.XA Active CN105742785B (en) | 2016-03-31 | 2016-03-31 | A kind of wide-band high gain RFID label antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111209996A (en) * | 2020-04-23 | 2020-05-29 | 北京智芯微电子科技有限公司 | Electronic label |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100118477A (en) * | 2009-04-28 | 2010-11-05 | 한양대학교 산학협력단 | Rfid tag antenna |
| CN103178336A (en) * | 2011-12-20 | 2013-06-26 | 刘智佳 | Ultra-thin double-frequency microstrip patch antenna array type radio frequency identification device (RFID) tag antenna |
| CN203465749U (en) * | 2013-09-16 | 2014-03-05 | 杭州电子科技大学 | Dual-frequency radio frequency identification tag and radio frequency identification system comprising the same |
| WO2016005816A2 (en) * | 2014-07-08 | 2016-01-14 | Wernher von Braun Centro de Pesquisas Avancadas | Rfid tag and rfid tag antenna |
-
2016
- 2016-03-31 CN CN201610201301.XA patent/CN105742785B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100118477A (en) * | 2009-04-28 | 2010-11-05 | 한양대학교 산학협력단 | Rfid tag antenna |
| CN103178336A (en) * | 2011-12-20 | 2013-06-26 | 刘智佳 | Ultra-thin double-frequency microstrip patch antenna array type radio frequency identification device (RFID) tag antenna |
| CN203465749U (en) * | 2013-09-16 | 2014-03-05 | 杭州电子科技大学 | Dual-frequency radio frequency identification tag and radio frequency identification system comprising the same |
| WO2016005816A2 (en) * | 2014-07-08 | 2016-01-14 | Wernher von Braun Centro de Pesquisas Avancadas | Rfid tag and rfid tag antenna |
Non-Patent Citations (2)
| Title |
|---|
| JIBISH MATHEW 等: ""A Modified Bow-Tie Antenna for Dual Band RFID Applications"", 《IEEE SPONSORED 9TH INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEMS AND CONTROL (ISCO)2015》 * |
| RAMIRO A. RAMIREZ 等: ""BROADBAND CIRCULAR POLARIZED ANTENNA FOR 915 MHz RFID SYSTEMS USING MINIATURIZED Bow-TIE Loop ELEMENTS"", 《2015 IEEE 16TH ANNUAL WIRELESS AND MICROWAVE TECHNOLOGY CONFERENCE (WAMICON)》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111209996A (en) * | 2020-04-23 | 2020-05-29 | 北京智芯微电子科技有限公司 | Electronic label |
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| CN105742785B (en) | 2018-09-21 |
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