CN102810165B - Read write line, electronic tag and radio-frequency recognition system - Google Patents
Read write line, electronic tag and radio-frequency recognition system Download PDFInfo
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- CN102810165B CN102810165B CN201110172714.7A CN201110172714A CN102810165B CN 102810165 B CN102810165 B CN 102810165B CN 201110172714 A CN201110172714 A CN 201110172714A CN 102810165 B CN102810165 B CN 102810165B
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Abstract
The present invention relates to read write line, electronic tag and radio-frequency recognition system.Described read write line communicates with electronic tag, comprises radio frequency identification reader antenna, and described radio frequency identification reader antenna comprises feeder line, sheet metal, and described feeder line is by sheet metal described in coupling scheme feed-in; Described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure, made described antenna have at least two different resonance band.The invention still further relates to electronic tag and radio-frequency recognition system.The present invention has at least engraved asymmetric first micro groove structure and the second micro groove structure on sheet metal, therefore, it is possible to produce multiple tuning-points easily, and tuning-points is not easily offset, and is easy to realize multimode resonance.
Description
Technical field
The invention belongs to the communications field, particularly, relate to read write line, electronic tag and radio-frequency recognition system.
Background technology
Radio-frequency (RF) identification (RadioFrequencyIdentification, RFID) be a kind of non-contacting automatic identification technology, its ultimate principle is the transport property utilizing radiofrequency signal and Space Coupling (inductance or electromagnetic coupled) or radar reflection, realizes the automatic identification to being identified object.
Rfid system at least comprises electronic tag and reader two parts, and wherein electronic tag to be attached to above object and to include the information of unique No. ID and article; The information of read write line on reading electronic labels, thus the automatic identification realizing object.During rfid system work, send radiofrequency signal by read write line by reading and writing device antenna, electronic tag returns radiofrequency signal and responds after receiving by label antenna the read write command that read write line sends, No. ID and Item Information are passed to read write line, thus realizes Automatic identification.
Along with the high development of semiconductor technology, propose more and more higher requirement to current electronic system integrated level, the miniaturization of device becomes the technical matters that whole industry is paid special attention to.But, as other important composition---the radio-frequency module of electronic system, be but faced with the highly difficult technological challenge of device miniaturization.Wherein, antenna is as the radiating element of final radiofrequency signal and receiving device, and its operating characteristic will directly affect the serviceability of whole electronic system.And the important indicator such as the size of antenna, bandwidth, gain, radiation efficiency receives the restriction (gain margin under fixed measure, bandwidth limit etc.) of basic physical principle.The ultimate principle of these index limit makes the miniaturization technology difficulty of antenna considerably beyond other device, and the complicacy of electromagnetic field analysis due to radio-frequency devices, approaching these ultimate values all becomes huge technological challenge.Therefore, the new antenna technology of miniaturization becomes an important technology bottleneck of contemporary electronic integrated system.For read write line and electronic tag, the miniaturization of the antenna of its correspondence is also problem demanding prompt solution.
Summary of the invention
The technical matters that the present invention will solve is, prior art antenna when low frequency operation is controlled by the defect of the physical constraints of spatial area, provides a kind of read write line, electronic tag and the radio-frequency recognition system when low frequency operation with miniature antenna.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of read write line, communicate with electronic tag, comprise radio frequency identification reader antenna, described radio frequency identification reader antenna comprises feeder line and sheet metal, described feeder line is arranged around sheet metal, and by sheet metal described in coupling scheme feed-in, described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure that link together, described antenna is made to have at least three different resonance band, wherein, the pattern of described first micro groove structure and the second micro groove structure, size and/or locus difference.
In read write line of the present invention, described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
In read write line of the present invention, described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
In read write line of the present invention, described first micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain;
Described second micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
The present invention also provides a kind of electronic tag, communicate with read write line, it is characterized in that, comprise RFID antenna, described RFID antenna comprises feeder line and sheet metal, described feeder line is arranged around sheet metal, and by sheet metal described in coupling scheme feed-in, described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure that link together, described antenna is made to have at least three different resonance band, wherein, the pattern of described first micro groove structure and the second micro groove structure, size and/or locus are different.
In electronic tag of the present invention, described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
In electronic tag of the present invention, described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
In electronic tag of the present invention, described first micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain;
Described second micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
The present invention also provides a kind of radio-frequency recognition system, and at least comprise electronic tag and read write line as above, described read write line is communicated with described electronic tag by radio frequency identification reader antenna.
The present invention also provides another kind of radio-frequency recognition system, and at least comprise read write line and electronic tag as above, described electronic tag is communicated with described read write line by RFID antenna.
Implement technical scheme of the present invention, there is following beneficial effect: on the sheet metal of antenna, at least engraved asymmetric first micro groove structure and the second micro groove structure, therefore, it is possible to produce multiple tuning-points easily, and tuning-points is not easily offset, and is easy to realize multimode resonance.
Accompanying drawing explanation
Fig. 1 is inventive antenna structural representation;
Fig. 2 is inventive antenna first better embodiment front elevation;
Fig. 3 is inventive antenna second better embodiment front elevation;
Fig. 4 is inventive antenna the 3rd better embodiment front elevation.
Fig. 5 a is the schematic diagram of complementary opening resonance loop structure;
Fig. 5 b is depicted as the schematic diagram of complementary helix structure;
Fig. 5 c is depicted as the schematic diagram of opening helical ring structure;
Fig. 5 d is depicted as the schematic diagram of two opening helical ring structure;
Fig. 5 e is depicted as the schematic diagram of complementary folding line structure;
Fig. 6 a derives schematic diagram for its geometric configuration of complementary opening resonance loop structure shown in Fig. 5 a;
Fig. 6 b is the derivative schematic diagram of its expansion of the complementary opening resonance loop structure shown in Fig. 5 a;
Structural representation after the compound that Fig. 7 a is the complementary opening resonance loop structure shown in three Fig. 5 a;
Fig. 7 b is depicted as the compound schematic diagram of complementary helix structure for the complementary opening resonance loop structure shown in two Fig. 5 a and Fig. 5 b;
Fig. 8 is the structural representation after the complementary opening resonance loop structure group battle array shown in four Fig. 5 a.
Fig. 9 is the structural representation of radio-frequency recognition system of the present invention;
Figure 10 is the structural representation of another radio-frequency recognition system of the present invention.
Embodiment
The read write line of radio-frequency recognition system comprises radio frequency identification reader antenna, is communicated with electronic tag by radio frequency identification reader antenna.In order to better describe the structure of radio frequency identification reader antenna of the present invention, adopt the skeleton view technique of painting, as shown in Figure 1.It should be noted that antenna provided by the invention was both applicable to radio frequency identification reader antenna, be also applicable to RFID antenna.Set forth for radio frequency identification reader antenna below.
Antenna applications of the present invention, in radio-frequency recognition system, communicates with the read write line in rfid system.Radio frequency identification reader antenna of the present invention comprises feeder line 1, sheet metal 2.Sheet metal 2 is at least engraved asymmetrical first micro groove structure 100 and the second micro groove structure 200, made antenna have at least two different resonance frequencies.Herein asymmetric refers to that the pattern of the first micro groove structure 100 and the second micro groove structure 200, size and/or locus are different, and those differences cause the first micro groove structure 100 different from the resonance band of the second micro groove structure 200.
Feeder line 1 part arranges with to sheet metal 2 couple feed around sheet metal 2.The mode of feeder line 1 pair of sheet metal 2 couple feed can connect feeder line 1 and sheet metal 2 and the inductive coupled feeding classification that formed by short circuit point by arranging one, also for feeder line 1 does not connect with sheet metal 2 but the capacitive coupling feeding classification that the two relative part forms capacitive coupling and formed.
First micro groove structure 100 of the present invention and the second micro groove structure 200 can be the complementary helix structures shown in the complementary opening resonance loop structure shown in Fig. 5 a, Fig. 5 b, a kind of in the two opening helical ring structures shown in the opening helical ring structure shown in Fig. 5 c, Fig. 5 d, the complementary folding line structure shown in Fig. 5 e or derived by several structure above, compound or organize the micro groove structure that battle array obtains.Derive and be divided into two kinds, one is that geometric configuration derives, another kind is that expansion is derivative, and geometric configuration is herein derivative refers to that function class derives like, variform structure, such as, derive to class of a curve structure, triangle class formation and other different polygon class formation by square frame class formation; Namely expansion herein derives offers new groove to form new micro groove structure on the basis of Fig. 5 a to Fig. 5 e; For the complementary opening resonance loop structure shown in Fig. 5 a, Fig. 6 a derives schematic diagram for its geometric configuration, and Fig. 6 b derives schematic diagram for its geometric configuration.Compound herein refers to, the micro groove structure that micro groove structure multiple superposition formation one of Fig. 5 a to Fig. 5 e is new, as shown in Figure 7a, is the structural representation after the complementary opening resonance loop structure compound shown in three Fig. 5 a; As shown in Figure 7b, for the complementary opening resonance loop structure shown in two Fig. 5 a and Fig. 5 b are depicted as the structural representation after the common compound of complementary helix structure.Group battle array herein refers to and forms an overall micro groove structure by the micro groove structure array on same sheet metal shown in multiple Fig. 5 a to Fig. 5 e, as shown in Figure 8, is the structural representation after multiple complementary opening resonance loop structure group battle array as shown in Figure 5 a.But the present invention first micro groove structure 100 and the second micro groove structure 200 are asymmetrical, concrete asymmetric manner describes in detail in embodiment below.
The techniques such as the mode that sheet metal 2 forms the first micro groove structure 100 and the second micro groove structure 200 can be etching, bores quarters, photoetching, electronics quarter, ion quarter, wherein be etched to selection process, its key step is after designing suitable micro groove structure, then by etching machines, the foil parts utilizing the chemical reaction of solvent and metal to get rid of default micro groove structure can obtain the sheet metal 2 being formed with above-mentioned first micro groove structure 100 and the second micro groove structure 200.The material of above-mentioned tinsel can be the metal such as copper, silver.
The present invention also comprises the medium for placing described feeder line and described sheet metal, and medium can be air, pottery, epoxy resin base plate or ptfe substrate.
If the present invention adopts the first symmetrical micro groove structure and the second micro groove structure on sheet metal 2, namely the first micro groove structure is identical with the resonance frequency of the second micro groove structure, antenna Q value will be caused after the two intercouples to increase, and corresponding bandwidth BW diminishes, and is unfavorable for the realization of multimode resonance.And according at least asymmetrical first micro groove structure and the second micro groove structure; the capacitance produced due to the two response electromagnetic wave and inductance value can be different; thus produce multiple different tuning-points; and the plurality of different tuning-points is not easily offset, be conducive to realizing the abundant multimode of antenna.
First micro groove structure 100 of the present invention can be the same with the version of the second micro groove structure 200, also can be different.And the asymmetric degree of the first micro groove structure 100 and the second micro groove structure 200 can regulate as required.Thus realize abundant adjustable multimode resonance.And as required, the present invention also can arrange number more than the micro groove structure of two with the different resonance band making antenna have more than three on same sheet metal.
Discuss the asymmetric micro groove structure that three kinds of sheet metals 2 of the present invention are formed below in detail.
As shown in Figure 2, Fig. 2 is the front elevation of the first better embodiment of the present invention, in Fig. 2, first micro groove structure 100 and the second micro groove structure 200 are unsymmetric structure, wherein, first micro groove structure 100 and the second micro groove structure 200 link together, and the difference due to pattern causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.Illustrate for the derived structure of the complementary helix structure shown in Fig. 5 b and complementary helix structure in present embodiment, the two is interconnected.
As shown in Figure 3, Fig. 3 is the front elevation of the second better embodiment of the present invention, in Fig. 3, first micro groove structure 100 and the second micro groove structure 200 are the different unsymmetric structure of pattern, wherein, first micro groove structure 100 and the second micro groove structure 200 are that separately independently the difference due to pattern causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.In present embodiment, the first micro groove structure 100 illustrates for the structure of opening helical ring shown in Fig. 5 c, and the second micro groove structure 200 illustrates for complementary helix structure shown in Fig. 5 b.
As shown in Figure 4, for the front elevation of the 3rd better embodiment of the present invention, in Fig. 4, first micro groove structure 100 and the second micro groove structure 200 are unsymmetric structure, wherein, the first micro groove structure 100 and the second micro groove structure 200 are that separately independently its pattern is identical, but the difference of its size causes the asymmetric of its structure, make the resonance frequency in the first micro groove structure 100 and the respective region of the second micro groove structure 200 different.In present embodiment, the first micro groove structure 100 and the second micro groove structure 200 all illustrate for the complementary helix structure shown in Fig. 5 c.
The present invention also provides a kind of electronic tag, and this electronic tag comprises RFID antenna, is communicated with read write line by RFID antenna.The concrete structure design of RFID antenna is with above-mentioned radio frequency identification reader antenna, and content namely mentioned above is equally applicable to the RFID antenna in electronic tag, therefore repeats no more.
Present invention also offers a kind of radio-frequency recognition system, as shown in Figure 9, radio-frequency recognition system 900 at least comprises electronic tag 901 and read write line 902, and read write line 902 comprises radio frequency identification reader antenna as above.When radio-frequency recognition system 900 works, radiofrequency signal is sent by radio frequency identification reader antenna by read write line 902, after electronic tag 901 receives by label antenna the read write command that read write line 902 sends, return radiofrequency signal to respond, No. ID and Item Information are passed to read write line 902, thus realizes Automatic identification.
Present invention also offers another kind of radio-frequency recognition system, as shown in Figure 10, radio-frequency recognition system 1000 at least comprises electronic tag 1001 and read write line 1002, and electronic tag 1001 comprises and the mutually isostructural RFID antenna of radio frequency identification reader antenna described in above-mentioned any embodiment.When radio-frequency recognition system 1000 works, radiofrequency signal is sent by reading and writing device antenna by read write line 1002, after electronic tag 1001 receives by RFID antenna the read write command that read write line 1002 sends, return radiofrequency signal to respond, No. ID and Item Information are passed to read write line 1002, thus realizes Automatic identification.
Widely, current typical apply has animal wafer, automobile wafer Fang Pirates device, gate inhibition's control, parking lot control, production line automation, handling of goods and materials etc. in the application of RFID.The sheet metal of antenna has at least been engraved asymmetric first micro groove structure and the second micro groove structure, therefore, it is possible to produce multiple tuning-points easily, and tuning-points is not easily offset, and is easy to realize multimode resonance.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. a read write line, communicate with electronic tag, comprise radio frequency identification reader antenna, described radio frequency identification reader antenna comprises feeder line and sheet metal, described feeder line is arranged around sheet metal, and by sheet metal described in coupling scheme feed-in, it is characterized in that: described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure that link together, described antenna is made to have at least three different resonance band, wherein, the pattern of described first micro groove structure and the second micro groove structure, size and/or locus are different.
2. read write line according to claim 1, is characterized in that, described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
3. read write line according to claim 1, is characterized in that, described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
4. read write line according to claim 1, it is characterized in that, described first micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain;
Described second micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
5. an electronic tag, communicate with read write line, comprise RFID antenna, described RFID antenna comprises feeder line and sheet metal, described feeder line is arranged around sheet metal, and by sheet metal described in coupling scheme feed-in, it is characterized in that: described sheet metal is at least engraved asymmetrical first micro groove structure and the second micro groove structure that link together, described antenna is made to have at least three different resonance band, wherein, the pattern of described first micro groove structure and the second micro groove structure, size and/or locus are different.
6. electronic tag according to claim 5, is characterized in that, described feeder line does not contact with described sheet metal, by sheet metal described in the feed-in of capacitive coupling mode.
7. electronic tag according to claim 5, is characterized in that, described feeder line is by can connecting described sheet metal and make described feeder line by sheet metal described in inductive coupled mode feed-in by short circuit point.
8. electronic tag according to claim 5, it is characterized in that, described first micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain;
Described second micro groove structure is complementary opening resonance loop structure, a kind of in complementary helix structure, opening helical ring structure, two opening helical ring structure and complementary folding line structure or derived by several structure above, micro groove structure that compound or group battle array obtain.
9. a radio-frequency recognition system, is characterized in that, at least comprise electronic tag and the read write line as described in any one of Claims 1 to 4, described read write line is communicated with described electronic tag by radio frequency identification reader antenna.
10. a radio-frequency recognition system, is characterized in that, at least comprise read write line and the electronic tag as described in any one of claim 5 ~ 8, described electronic tag is communicated with described read write line by RFID antenna.
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| CN201110172714.7A CN102810165B (en) | 2011-06-24 | 2011-06-24 | Read write line, electronic tag and radio-frequency recognition system |
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| CN201110172714.7A CN102810165B (en) | 2011-06-24 | 2011-06-24 | Read write line, electronic tag and radio-frequency recognition system |
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| CN102810165B true CN102810165B (en) | 2015-12-16 |
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| 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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| CN101359767A (en) * | 2008-09-16 | 2009-02-04 | 中国电子科技集团公司第七研究所 | Electronic label reading and writing device antenna and a RFID system |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN202120286U (en) * | 2011-06-24 | 2012-01-18 | 深圳光启高等理工研究院 | Reader-writer, electronic tag and radio frequency identification system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7714794B2 (en) * | 2005-01-19 | 2010-05-11 | Behzad Tavassoli Hozouri | RFID antenna |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359767A (en) * | 2008-09-16 | 2009-02-04 | 中国电子科技集团公司第七研究所 | Electronic label reading and writing device antenna and a RFID system |
| CN101740862A (en) * | 2008-11-20 | 2010-06-16 | 东莞市启汉电子科技有限公司 | Dipole antenna of RF chip |
| CN101958460A (en) * | 2009-07-17 | 2011-01-26 | 捷讯研究有限公司 | Multiple-grooved antenna and mobile device |
| CN201490337U (en) * | 2009-08-31 | 2010-05-26 | 深圳市启汉科技有限公司 | Monopole radio-frequency antenna |
| CN202120286U (en) * | 2011-06-24 | 2012-01-18 | 深圳光启高等理工研究院 | Reader-writer, electronic tag and radio frequency identification system |
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