CN103280629B - RFID ceramic antenna and electronic tag matrix thereof and screw-type RFID label tag - Google Patents
RFID ceramic antenna and electronic tag matrix thereof and screw-type RFID label tag Download PDFInfo
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- CN103280629B CN103280629B CN201310156082.4A CN201310156082A CN103280629B CN 103280629 B CN103280629 B CN 103280629B CN 201310156082 A CN201310156082 A CN 201310156082A CN 103280629 B CN103280629 B CN 103280629B
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Abstract
A kind of RFID ceramic antenna, comprise media ceramic block (11), upper surface there is a pole-face that powers on (12), lower surface there is a bottom electrode face (13), a side there is a short-circuiting electrode (15), another side on the other side there is a feeding electrode (14), feeding electrode has an inverted U-shaped coupling gap (143), feeding electrode is divided into inverted U-shaped part (141) and I shape part (142).Inverted U-shaped coupling gap is equivalent to extend the length of radiating surface thus can reduces the volume of antenna, reaches miniaturized object.IC chip 21 is installed by " binding " mode in the coupling gap of RFID ceramic antenna, then painting applies black glue, namely becomes electronic tag matrix; By combined for the potsherd 4 of electronic tag matrix and a metallic screw and one piece of circular plate type, namely can be made into a kind of screw-type RFID label tag.
Description
Technical field
The present invention relates to a kind of antenna of electronic tag and the structure of electronic tag thereof, a kind of RFID ceramic antenna and electronic tag matrix thereof and screw-type RFID label tag.
Background technology
RFID(Radio Frequency Identification) technology, also known as electronic label technology, radio RF recognition technology, it is a kind of communication technology, read and write related data by radio signals identification specific objective, without the need to setting up machinery or optical contact between recognition system and specific objective, function that is quick, batch identification can be realized, the occasion of the asset managements such as IT, medical treatment, instrument can be used in.Rfid system generally comprises electronic tag, read write line two parts.Electronic tag is arranged on identified object, is used for storing the identity information of identified object.Read write line and electronic tag carry out radio communication, write the data message in electronic tag and read.Antenna in electronic tag is the critical component in whole system, and its design and performance level decide the performance of label to a great extent, comprise operating distance, consistency etc.The antenna of electronic tag can be divided into the polytypes such as dipole antenna, microstrip antenna, PIFA antenna (Planar Inverted-F Antenna, i.e. planar inverted-F antenna), is applied to different occasions.
Development need RFID and the sensor sensing layer of technology of Internet of things realize, and hyper band is wherein the emphasis of development.When UHF RFID label tag is applied to the environment such as liquid, metal, dipole antenna cannot be competent at, and microstrip antenna or the PIFA antenna of commonly using pottery or plastic substrate at present make label.When being especially applied in the micro metal assets such as instrument, IT and medical instrument, need miniaturized RFID label tag.
Summary of the invention
The present invention is intended to the structure proposing a kind of RFID ceramic antenna, and another object of the present invention is the structure proposing the electronic tag matrix that this RFID ceramic antenna of application is made, and the 3rd object of the present invention is the structure proposing a kind of screw-type RFID label tag.
This RFID ceramic antenna comprises the media ceramic block of cuboid, the upper surface of media ceramic block has the pole-face that powers on, as the radiating surface of antenna; The lower surface of media ceramic block there is a bottom electrode face, as grounding electrode; There is a short-circuiting electrode side of media ceramic block, and the upper edge of short-circuiting electrode is electrically connected with the pole-face that powers on, and the lower edge of short-circuiting electrode is electrically connected with bottom electrode face; Another side relative with there being the side of short-circuiting electrode on media ceramic block there is a feeding electrode, this feeding electrode there is an inverted U-shaped coupling gap, feeding electrode is divided into inverted U-shaped part and I shape part two parts, the upper end of the inverted U-shaped part of feeding electrode is electrically connected with the pole-face that powers on, and lower end and the bottom electrode face of the I shape part of feeding electrode are electrically connected.
The media ceramic body of this RFID ceramic antenna adopts the microwave dielectric material of high-k.Inverted U-shaped coupling gap is equivalent to the length extending head-on radiation electrode (namely power on pole-face), thus can reduce the volume of antenna.The width of the short-circuiting electrode of the RFID ceramic antenna of this miniaturization can regulate, to reach the accurate control to ceramic antenna frequency.
By above-mentioned RFID ceramic antenna and an IC chip combined, IC chip is fixed on the place of bottom centre of the recess of the inverted U-shaped part of feeding electrode, the input of IC chip, output pin fix with the inverted U-shaped part of feeding electrode and I shape part and are electrically connected respectively, be coated with outward at IC chip again and apply black glue, namely become an electronic tag matrix.
By combined for the potsherd of the low-k of above-mentioned electronic tag matrix and a metallic screw and one piece of circular plate type, namely can be made into a kind of screw-type RFID label tag: there is the rectangular opening of a up/down perforation at the middle part of described potsherd, the upper surface of the head of described metallic screw there is a columniform groove, potsherd embeds in the columniform groove of screw head, the face of cylinder of potsherd and the cylindrical wall of groove fix, electronic tag matrix embeds in the rectangular opening in the middle part of above-mentioned potsherd, and fix with the sidewall in hole, the earth electrode of electronic tag matrix is electrically connected with the Metal Phase of the bottom surface of the columniform groove of screw head.This screw-type RFID label tag can rely on its bolt portion to be fixed on easily on metal or non-metallic objectsit is not a metal object, plays the effect of electronic tag.
Accompanying drawing explanation
Fig. 1 is the stereogram of feeding electrode side when front of RFID ceramic antenna of the present invention;
Fig. 2 is the stereogram of short-circuiting electrode side when front of RFID ceramic antenna of the present invention;
Fig. 3 is the schematic diagram that in RFID ceramic antenna, chip becomes electronic tag matrix;
Fig. 4 is the structure chart of metallic screw;
Fig. 5 is the structure of potsherd;
Fig. 6 is the structure chart of screw-type RFID label tag.
Embodiment
As depicted in figs. 1 and 2, this RFID ceramic antenna comprises rectangular media ceramic block 11, the upper surface of media ceramic block has the pole-face 12 that powers on, as the radiating surface of antenna; The lower surface of media ceramic block there is a bottom electrode face 13, as grounding electrode; There is a short-circuiting electrode 15 side of media ceramic block, and the upper edge of short-circuiting electrode is electrically connected with the pole-face that powers on, and the lower edge of short-circuiting electrode is electrically connected with bottom electrode face; Another side relative with there being the side of short-circuiting electrode 15 on media ceramic block there is a feeding electrode 14, feeding electrode 14 there is an inverted U-shaped coupling gap 143, feeding electrode 14 is divided into inverted U-shaped part 141 and I shape part 142 two parts, I shape part is positioned at the recess of inverted U-shaped part, the upper end of the inverted U-shaped part 141 of feeding electrode is electrically connected with the pole-face 12 that powers on, and lower end and the bottom electrode face 13 of the I shape part 142 of feeding electrode are electrically connected.
The media ceramic block 11 of this RFID ceramic antenna can use dielectric constant to be the microwave ceramic material of the high-k of 120 ~ 150.Such as SrO-CaO-Li
2o-Nd
2o
3-TiO
2-Sm
2o
3series microwave material, CaO-Li
2o-Ln
2o
3-TiO
2series microwave material.The upper and lower surface of media ceramic block 11 can be foursquare, also can be rectangular.When adopting dielectric constant to be greater than the microwave dielectric material of 120, the dimensioned of the RFID ceramic antenna of hyper band (UHF) can be less than 6mm to the length of side.The method of the pole-face that powers on of this RFID ceramic antenna, bottom electrode face, short-circuiting electrode and feeding electrode all available print and silver ink firing makes.
Four electrode surfaces 12,13,14 and 15 of this RFID ceramic antenna are looped around on media ceramic body and form a loop aerial.The design in inverted U-shaped coupling gap 143, is equivalent to the length extending head-on radiation electrode (namely power on pole-face 12), when the dielectric constant of dielectric material is certain, can reduces the volume of antenna, realizes miniaturized object.The design in this inverted U-shaped coupling gap 143, add the microwave dielectric ceramic materials selecting high-k, greatly can reduce the volume of this loop aerial, finally achieve the miniaturization of RFID ceramic antenna, make instrument, IT assets etc. in applying RFID technology, possess more selection.
As shown in (a) and (b) of Fig. 3, IC chip 21 is installed by " binding " (bonding) mode in the coupling gap 143 of this RFID ceramic antenna, IC chip is fixed on the place of bottom centre of the recess of the inverted U-shaped part 141 of feeding electrode, and the input of IC chip 21, output pin fix with the inverted U-shaped part 141 of feeding electrode and I shape part 142 and are electrically connected respectively.Be coated with on IC chip 21 position again and apply black glue 22, chip 21 is fixed and is protected, namely becomes electronic tag matrix 2 as shown in Figure 3 (c).This electronic tag matrix can be applied as electronic tag, can be attached to the surface of metal object, utilizes the surface of metal object to be used as ground plane.
As shown in Figure 6, by combined for the potsherd 4 of the low-k of above-mentioned electronic tag matrix 2 and a metallic screw 3 and one piece of circular plate type, namely can be made into a kind of screw-type RFID label tag.The structure of above-mentioned potsherd 4, as shown in institute Fig. 5, has the rectangular opening 41 of a up/down perforation in the middle part of it, the material of potsherd is dielectric constant microwave pottery, as Al
2o
3series microwave ceramics, MO-SiO
2(M=Ca, Mg, Zn) serial microwave ceramics etc.The structure of described metallic screw 3 as shown in Figure 4, the upper surface of its head 31 has a columniform groove 32.Described potsherd 4 to embed in the columniform groove 32 of screw head and fixes with the wall of groove, can apply some epoxy glue in gap; Described electronic tag matrix 2 earth electrode embeds downwards in the rectangular opening 41 in the middle part of potsherd 4 and hole wall fixes, and also can apply some epoxy glue in gap; The earth electrode 13 of electronic tag is electrically connected with the Metal Phase of the bottom surface of the columniform groove 32 of screw head, the upper surface of electronic tag matrix 2 and the upper surface flush of screw head, or the upper surface of comparable screw head is lower.The aerial radiation face 12 of electronic tag matrix 2 upwards, keeps good radiance.This screw-type RFID label tag can rely on its bolt portion to fix on a metal object easily, plays the effect of electronic tag.This screw-type RFID label tag also can be used on non-metallic objectsit is not a metal object, but the indexs such as its operating distance are than with weaker on a metal object.
Claims (1)
1. a screw-type RFID label tag, comprises the potsherd (4) of low-k of electronic tag matrix, a metallic screw (3) and one piece of circular plate type, it is characterized in that electronic tag matrix comprises media ceramic block (11) and an IC chip (21) of cuboid, the upper surface of media ceramic block has a pole-face that powers on (12), as the radiating surface of antenna, the lower surface of media ceramic block there is a bottom electrode face (13), as grounding electrode, a side of media ceramic block has a short-circuiting electrode (15), the upper edge of short-circuiting electrode is electrically connected with the pole-face that powers on, and the lower edge of short-circuiting electrode is electrically connected with bottom electrode face, another side relative with there being the side of short-circuiting electrode (15) on media ceramic block there is a feeding electrode (14), described feeding electrode (14) there is an inverted U-shaped coupling gap (143), feeding electrode (14) is divided into inverted U-shaped part (141) and I shape part (142), the upper end of the inverted U-shaped part of feeding electrode (14) is electrically connected with the pole-face (12) that powers on, and lower end and bottom electrode face (13) of the I shape part of feeding electrode (14) are electrically connected, described IC chip (21) is fixed on the place of bottom centre of the recess of the inverted U-shaped part (141) of feeding electrode, the input of IC chip, output pin fix with the inverted U-shaped part (141) of feeding electrode and I shape part (142) and are electrically connected respectively, are coated with black glue (22) outside IC chip (21), there is the rectangular opening (41) of a up/down perforation at the middle part of described potsherd (4), the upper surface of the head (31) of described metallic screw (3) there is a columniform groove (32), described potsherd (4) embeds in the columniform groove (32) of screw head, the face of cylinder of potsherd and the cylindrical wall of groove fix, described electronic tag matrix (2) embeds in the rectangular opening (41) in the middle part of above-mentioned potsherd, and fix with the sidewall in hole, the earth electrode (13) of electronic tag matrix (2) is electrically connected with the Metal Phase of the bottom surface of the columniform groove (32) of screw head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310156082.4A CN103280629B (en) | 2013-04-28 | 2013-04-28 | RFID ceramic antenna and electronic tag matrix thereof and screw-type RFID label tag |
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| CN201310156082.4A CN103280629B (en) | 2013-04-28 | 2013-04-28 | RFID ceramic antenna and electronic tag matrix thereof and screw-type RFID label tag |
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| CN103280629B true CN103280629B (en) | 2015-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016049845A1 (en) * | 2014-09-30 | 2016-04-07 | Hong Kong R&D Centre for Logistics and Supply Chain Management Enabling Technologies Limited | A wireless transmission device |
| CN106372708B (en) * | 2016-08-26 | 2023-08-08 | 无锡朗帆信息科技有限公司 | RFID electronic tag manufactured by using ceramic lamination and used for sharing metal, nonmetal and liquid and manufacturing method |
| CN107392288A (en) * | 2017-07-14 | 2017-11-24 | 国电南瑞科技股份有限公司 | A kind of omnidirectional's power equipment inspection RF tag |
| CN107817057A (en) * | 2017-11-30 | 2018-03-20 | 杭州泽济电子科技有限公司 | Fastening assembly with miniaturized electronic label |
| CN108073971A (en) * | 2017-12-25 | 2018-05-25 | 上海数斐信息科技有限公司 | A kind of miniaturization double resonance anti-metal RFID label tag |
| EP3564540A1 (en) | 2018-05-03 | 2019-11-06 | HILTI Aktiengesellschaft | Expansion anchor with protected optical code |
| CN108846468A (en) * | 2018-06-08 | 2018-11-20 | 深圳麦格米特电气股份有限公司 | Electronic labelling system |
| TWI666589B (en) * | 2018-11-30 | 2019-07-21 | 國立彰化師範大學 | Radio frequency screw antenna and radio frequency screw tag |
| CN110175668A (en) * | 2019-06-03 | 2019-08-27 | 北京宏诚创新科技有限公司 | A kind of concealed tracing devices and methods therefor |
| CN110783703B (en) * | 2019-11-12 | 2021-12-03 | 榆林学院 | Ground plate gap radiation n-type parasitic structure multi-frequency planar monopole antenna |
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| GB0519453D0 (en) * | 2005-09-23 | 2005-11-02 | Forster Deborah A | RFID tag |
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| US7412898B1 (en) * | 2006-07-28 | 2008-08-19 | Disney Enterprises, Inc. | Load sensing system including RFID tagged fasteners |
| CN101737389A (en) * | 2009-12-31 | 2010-06-16 | 上海量科电子科技有限公司 | Nail with radio-frequency tag function |
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