CN202205887U - RFID tag antenna with compensation structure, RFID tag and RFID system - Google Patents
RFID tag antenna with compensation structure, RFID tag and RFID system Download PDFInfo
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- CN202205887U CN202205887U CN2011201903799U CN201120190379U CN202205887U CN 202205887 U CN202205887 U CN 202205887U CN 2011201903799 U CN2011201903799 U CN 2011201903799U CN 201120190379 U CN201120190379 U CN 201120190379U CN 202205887 U CN202205887 U CN 202205887U
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Abstract
The utility model provides an RFID (Radio Frequency Identification) tag antenna with a compensation structure, an RFID tag and an RFID system. The RFID tag antenna comprises: a dielectric substrate (3); a conductor grounding part (2) which is arranged in the way of covering the whole surface of one main surface of the dielectric substrate (3); a conductor radiation part (4) which is arranged in the way of covering the whole surface of the other one main surface of the dielectric substrate (3); a feeding part (5) which is arranged on one end face in the length direction of the dielectric substrate (3) and provided with a first feed line (51) and a second feed line (52), wherein the first feed line (51) and the second feed line (52) are respectively electrically connected with the conductor grounding part (2) and the conductor radiation part (4); and a conductor compensation part (7) which is arranged on at least one end face in the two end faces parallel with the length direction of the dielectric substrate (3), wherein the conductor grounding part (2) and the conductor radiation part (4) are electrically connected through the conductor compensation part (7).
Description
Technical field
The utility model relates to RFID label antenna, RFID label and system, relates to especially being suitable for being attached to RFID label antenna, RFID label and the system that carries out radio communication on the metal object.
Background technology
Recently, in order to realize the high efficiency of merchantable thing flow management, merchandise control etc., RFID (Radio Frequency Identification: radio frequency identification) system in extensive use in the world.Reader or read write line that rfid system carries out radio communication by the RFID label with chip, with this RFID label constitute.
RFID label in the above-mentioned rfid system not only will satisfy the requirement of miniaturization, more should reliable working performance, and the communication distance long enough.Yet the RFID label is mounted in and uses on the various objects, so receive from the influence of mounting object and its antenna performance and communication distance etc. change.Especially, when mounting object is metal covering, the reliability variation of service behaviour, and also communication distance will obviously reduce.
Even also can not reduce the performance of antenna on the metal covering and on each position, can have stable understanding rate for the RFID label is installed in, the invention of patent documentation 1 provides a kind of small-sized radio-frequency identification label that ground is the microstrip antenna of metallic object that has.Figure 10 shows this RFID tag.Shown in Figure 10 like this, the micro-strip paster antenna of this RFID tag comprises interconnective power supply 31 and radioactive department 30, and said radioactive department 30 both sides have a kerf 32 at least.
See that from the correlation technique of microstrip antenna the effective radiating area of microstrip antenna is very big to the influence of its gain, directly influence the bandwidth of the communication distance and the communication frequency of RFID label.Under the situation of other parameter constants of microstrip antenna, its effective radiating area is big more, and the communication distance of RFID label is long more, and its communication frequency bandwidth also improves.
Yet, in the prior art, in order to obtain the microstrip antenna of operate as normal, must be used to install the structure that slot milling forms the impedance matching network of microstrip antenna and is used to regulate the resonance frequency of microstrip antenna on the interarea of radiating surface.The invention of patent documentation 1 is no exception.Formed several otch, structure exactly on radioactive department in order to form impedance matching network and to be used to regulate resonance frequency.For this reason, in the invention of patent documentation 1, sacrificed the effective radiating area of radioactive department.It is thus clear that from increasing the angle consideration that effective radiating area improves the performance of microstrip antenna, the invention of patent documentation 1 also has the very big space of improving.
Patent documentation 1:CN101728647A
The utility model content
The utility model is to propose in view of the above problems; Its purpose is to provide a kind of RFID label antenna, RFID label and system with collocation structure; Under the situation of the material that does not change label overall dimensions and each parts; Above-mentioned RFID label antenna, RFID label and system can promote communication distance, and can improve bandwidth performance.
To achieve these goals, the utility model provides a kind of RFID label antenna with collocation structure, it is characterized in that having: dielectric base plate, and it is shaped as laminal cuboid; The conductor grounding parts, it is arranged on the interarea in two interareas up and down of above-mentioned dielectric base plate, and covers whole of this interarea; Radiation of conductors portion, it is arranged on another interarea in two interareas up and down of above-mentioned dielectric base plate, and covers whole of this another interarea; Current feed department, it is arranged on the end face on the length direction of above-mentioned dielectric base plate, and has first feeder line and second feeder line, and this first feeder line and second feeder line are electrically connected with above-mentioned conductor grounding parts and above-mentioned radiation of conductors portion respectively; The conductor compensation section, it is arranged at least one end face in two end faces parallel with the length direction of above-mentioned dielectric base plate, and above-mentioned conductor grounding parts and above-mentioned radiation of conductors portion are electrically connected via this conductor compensation section.
In the RFID of the utility model label antenna; Current feed department and conductor compensation section are brought into play the impedance matching network of RFID label antenna of the prior art and are used to regulate the function of the structure of resonance frequency; And this current feed department and conductor compensation section are positioned at the end face of RFID label antenna; So can make respectively whole of two interareas of covering dielectric substrate of radiation of conductors portion and conductor grounding parts; Thereby under the situation of the material that does not change label overall dimensions and each parts, can promote communication distance and can improve bandwidth performance.
Have in the RFID label antenna of collocation structure the utility model above-mentioned; Preferably; Above-mentioned conductor compensation section near the end of above-mentioned current feed department one side and the residing end face of this conductor compensation section away from satisfying relational expression l＜H+L/2 apart from l between the end of above-mentioned current feed department one side; Wherein, H is the height of above-mentioned dielectric base plate, and L is the length of above-mentioned dielectric base plate.
In the RFID of the utility model label antenna, utilize the conductor compensation section on the end face be arranged on dielectric base plate, can compensate because of dwindling the electrical length that the label antenna size causes and lose, thereby can further realize the miniaturization of RFID label.Especially; The conductor compensation section near the end of current feed department one side and the residing end face of this conductor compensation section away from satisfying relational expression l＜H+L/2 (wherein apart from l between the end of current feed department one side; H is the height of dielectric base plate; L is the length of dielectric base plate) time, utilize the electrical length compensation effect of conductor compensation section more effective.
Have in the RFID label antenna of collocation structure the utility model above-mentioned, the end near above-mentioned current feed department one side of above-mentioned conductor compensation section is positioned at and the corresponding position of the resonance frequency of above-mentioned antenna.
In above-mentioned RFID label antenna, through changing the position near the end of current feed department one side of conductor compensation section, the electrical length of RFID label antenna is adjusted to desirable length, thereby makes the RFID label antenna realize desirable resonance frequency.
Have in the RFID label antenna of collocation structure the utility model above-mentioned, preferably, on two end faces parallel, all be provided with the conductor compensation section respectively with the length direction of above-mentioned dielectric base plate.And preferably, two above-mentioned conductor compensation section are mutually symmetrical and use identical electric conducting material." two conductor compensation section are mutually symmetrical " is meant; Position on each comfortable above-mentioned two end face of two conductor compensation section be mutually symmetrical and shape identical; That is to say that two conductor compensation section are about identical with above-mentioned two end faces distance separately and be mutually symmetrical with above-mentioned two parallel planes of end face.
In above-mentioned RFID label antenna; Through the conductor compensation section that adopts two to be mutually symmetrical; Can make the conductor grounding parts of RFID label antenna and the CURRENT DISTRIBUTION in the radiation of conductors portion become more even, thereby further can promote communication distance and can improve bandwidth performance.
Have in the RFID label antenna of collocation structure the utility model above-mentioned, preferably, above-mentioned conductor compensation section has laterally zygomorphic shape.And preferably, above-mentioned first feeder line and second feeder line be symmetry up and down.
In above-mentioned RFID label antenna; Conductor grounding parts and radiation of conductors portion be symmetry up and down, and the conductor compensation section has laterally zygomorphic shape, and first feeder line and second feeder line be symmetry up and down; Be that entire RF ID label antenna has laterally zygomorphic structure; So each parts at the RFID label antenna adopt under the situation of same conductor material, this RFID label antenna in process of production with need not to distinguish forward and reverse fully in the use, this helps enhancing productivity and is easy to use.
Have in the RFID label antenna of collocation structure the utility model above-mentioned; Preferably; Above-mentioned first feeder line and second feeder line be symmetry up and down, and above-mentioned first feeder line and second feeder line have the shape about the center line symmetry of the residing end face of above-mentioned current feed department on left and right directions respectively.Also have, above-mentioned first feeder line and second feeder line have on the Width of above-mentioned dielectric base plate and the corresponding width of the resonance frequency of above-mentioned antenna.
In above-mentioned RFID label antenna,, can the electrical length of RFID label antenna be adjusted to desirable length, thereby make the RFID label antenna realize desirable resonance frequency through changing the width of first feeder line and second feeder line.
Have in the RFID label antenna of collocation structure the utility model above-mentioned; Preferably, above-mentioned dielectric base plate, above-mentioned conductor grounding parts, above-mentioned radiation of conductors portion, above-mentioned first feeder line, above-mentioned second feeder line and conductor compensation section are formed by the high conductivity powder curing.
To achieve these goals, the utility model also provides a kind of RFID label, it is characterized in that having: aforesaid RFID label antenna with collocation structure; Chip, it is electrically connected with above-mentioned first feeder line and above-mentioned second feeder line respectively.Wherein, above-mentioned conductor compensation section has and can make this RFID label antenna and said chip reach the width of impedance matching.
To achieve these goals, the utility model also provides a kind of rfid system, it is characterized in that, has: aforesaid RFID label; Carry out the reader or the read write line of radio communication with this RFID label.
Can know that according to above structure if adopt the utility model, then under the situation of the material that does not change label overall dimensions and each parts, above-mentioned RFID label antenna, RFID label and system can promote communication distance, and can improve bandwidth performance.That is to say, keeping further to realize the miniaturization of RFID label and antenna under the constant situation of communication distance and bandwidth performance.
Description of drawings
Fig. 1 shows the sketch map of the rfid system of the utility model.
Fig. 2 is the stereogram that is used to explain the RFID label of the utility model.
Fig. 3 is the upward view of the RFID label of the utility model.
Fig. 4 is the vertical view of the RFID label of the utility model.
Fig. 5 is the left view of the RFID label of the utility model.
Fig. 6 A and Fig. 6 B show the sketch map of electrical length of the RFID label antenna of the utility model.
The sketch map of the electrical length when the RFID label antenna that Fig. 7 A and Fig. 7 B show the utility model does not have the conductor compensation section.
Fig. 8 is the sketch map that is used to explain the relation between the electrical length of width and RFID label antenna of conductor compensation section of RFID label antenna of the utility model.
Fig. 9 is the sketch map that is used to explain the relation between the electrical length of width and RFID label antenna of current feed department of RFID label antenna of the utility model.
Figure 10 shows the sketch map of the RFID label of prior art.
Embodiment
Below, the execution mode of the utility model is described with reference to accompanying drawing.
< structure of rfid system and RFID label >
Fig. 1 shows the sketch map of the rfid system of the utility model, and Fig. 2 is the stereogram that is used to explain the RFID label of the utility model.
At first, with reference to Fig. 1, the structure of the rfid system 100 of the utility model is described.The rfid system 100 of the utility model comprises: RFID label 1, and it is installed on the metal object M such as steel product, mould, manufacturing equipment; Read write line RW, itself and RFID label 1 carry out the read-write of information non-contactly.For example; RFID label 1 is installed in stainless steel materials etc. through naked eyes on the impalpable steel product and the storehouse of coming in and going out, when operation such as making an inventory; Rfid system 100 carries out selection (picking), the finished product inspection of target object through read write line RW that can be portable; Perhaps, utilize rfid system 100 to manage being installed in RFID label 1 on mould or the manufacturing equipment and making an inventory or in kind when confirming etc.
In addition, in the rfid system 100 of the utility model, read write line RW can utilize can be portable read write line RW, also can utilize fixed read write line RW, and read write line RW also can be a reader.
The structure of RFID label 1 then, is described with reference to Fig. 2.
As shown in Figure 2, RFID label 1 has conductor grounding parts 2, dielectric base plate 3, radiation of conductors portion 4, current feed department 5, chip 6 and conductor compensation section 7.
Fig. 3 is the upward view of the RFID label 1 of the utility model.
As shown in Figure 3, conductor grounding parts 2 is arranged on the interarea of dielectric base plate 3, and covers whole of this interarea.
Above-mentioned dielectric base plate 3 is by ceramic dielectric, and perhaps synthetic resin materials such as FR4, polytetrafluoroethylene, polyethylene, PETG (PET), polypropylene and polyimides form, and it is shaped as laminal cuboid.In the utility model, the dielectric base plate 3 preferred ceramic dielectrics that adopt.
Fig. 4 is the vertical view of the RFID label 1 of the utility model.
As shown in Figure 4, radiation of conductors portion 4 is arranged on another interarea of above-mentioned dielectric base plate 3, and covers whole of this another interarea.
Fig. 5 is the left view of the RFID label 1 of the utility model.
Shown in Fig. 2 and 5; Current feed department 5 is arranged on the end face on the length direction of above-mentioned dielectric base plate 3; And having first feeder line 51 and second feeder line 52, this first feeder line 51 and second feeder line 52 are electrically connected with above-mentioned radiation of conductors portion 4 with above-mentioned conductor grounding parts 2 respectively.This first feeder line 51 and the laterally zygomorphic structure of second feeder line, 52 preferred employings.Also have, preferably make above-mentioned first feeder line 51 and second feeder line 52 have shape respectively about the center line symmetry of end face on left and right directions of above-mentioned current feed department 5 residing dielectric base plates 3.
As shown in Figure 5, chip 6 is electrically connected with above-mentioned second feeder line 52 with above-mentioned first feeder line 51 respectively.
Turn back to Fig. 2, conductor compensation section 7 is arranged at least one end face in two end faces parallel with the length direction of above-mentioned dielectric base plate 3, and above-mentioned conductor grounding parts 2 and above-mentioned radiation of conductors portion 4 are electrically connected via this conductor compensation section 7.In utility model, preferably on two end faces parallel, a conductor compensation section 7 is set all respectively, and these two conductor compensation section 7 are mutually symmetrical with the length direction of above-mentioned dielectric base plate 3.This conductor compensation section 7 has shapes such as arc, banded rectangle, triangle, preferably has laterally zygomorphic structures such as banded rectangle.
The conductor grounding parts 2 of above-mentioned RFID label 1, radiation of conductors portion 4, current feed department 5 and conductor compensation section 7 are made up of conductive material, like copper, aluminium, stainless steel or silver etc.In the utility model, conductor grounding parts 2, radiation of conductors portion 4, current feed department 5 and conductor compensation section 7 are preferably formed by high conductivity powder curings such as silver.
In the structure of above-mentioned RFID label 1, conductor grounding parts 2, dielectric base plate 3, radiation of conductors portion 4, current feed department 5 and conductor compensation section 7 are equivalent to the RFID label antenna of the utility model.
< the conductor compensation section is to the compensating action of the electrical length of RFID label antenna >
Below, the compensating action of the electrical length of 7 pairs of RFID label antennas of conductor compensation section is described with reference to Fig. 6 A, Fig. 6 B, Fig. 7 and Fig. 7 B.
Fig. 6 A and Fig. 6 B show the sketch map of electrical length of the RFID label antenna of the utility model.The sketch map of the electrical length when the RFID label antenna that Fig. 7 and Fig. 7 B show the utility model does not have conductor compensation section 7.
Shown in Fig. 6 A and Fig. 6 B, the electrical length of the RFID label antenna of the utility model be roughly arrow 1., 2., 3., 4., length sum 5..
And shown in Fig. 7 and Fig. 7 B, the electrical length when the RFID label antenna of the utility model does not have conductor compensation section 7 is roughly the length sum of arrow (1), (2), (3).
Under each parameter situation for a change such as shape of the current feed department 5 among the current feed department 5 in Fig. 6 A and Fig. 7 A, arrow 1., length sum 2. obviously equals the length sum of arrow (1), (2).Because arrow length 4. is the height H of dielectric base plate 3; The length of arrow (3) is the length L of dielectric base plate 3; So arrow 4., under 5. the situation of length sum greater than the length of arrow (3); Promptly conductor compensation section 7 near the end of current feed department 5 one sides and these conductor compensation section 7 residing end faces away from satisfying apart from l under the situation of relational expression l＜H+L/2 between the end of current feed department 5 one sides, the electrical length of the RFID label antenna of the utility model is effectively compensated through conductor compensation section 7.Therefore, utilize RFID label antenna, just can be implemented in UHF (860Mhz～960Mhz) the interior communication of frequency range than prior art smaller szie.
Examine Fig. 6 A, Fig. 6 B, Fig. 7 and Fig. 7 B; Then be not difficult to find out; If conductor compensation section 7 away from the end of current feed department 5 one sides and the end overlaid away from current feed department one side of the residing end face of this conductor compensation section, then the width w of conductor compensation section 7 becomes w=l, at this moment; Satisfy under the situation of relational expression w＜H+L/2 at the width w of conductor compensation section 7, the electrical length of the RFID label antenna of the utility model is effectively compensated through conductor compensation section 7.
Fig. 8 is the sketch map that is used to explain the relation between the electrical length of width and RFID label antenna of conductor compensation section 7 of RFID label antenna of the utility model.
When the arrow A direction in Fig. 8 is dwindled the width of conductor compensation section 7; Shown in Fig. 6 A and Fig. 6 B such by arrow 1., 2., 3., 4., the electrical length of the RFID label antenna shown in 5. the length sum can increase; Thereby the resonance frequency of RFID label antenna is reduced; And when the opposite direction to arrow A increases the width of conductor compensation section 7, the resonance frequency of RFID label antenna is raise.
In addition; In the nature of things; Under the situation of the width that does not change conductor compensation section 7,, the end near current feed department 5 one sides of conductor compensation section 7 is moved only through making 7 integral translations of conductor compensation section; The electrical length of RFID label antenna is changed, thereby change the resonance frequency of RFID label antenna.
< current feed department is to the compensating action of the electrical length of RFID label antenna >
Below, the compensating action of the electrical length of 5 pairs of RFID label antennas of current feed department is described with reference to Fig. 6 A, Fig. 6 B and 9.
Fig. 9 is the sketch map that is used to explain the relation between the electrical length of width and RFID label antenna of current feed department of RFID label antenna of the utility model.
During the width of first feeder line 51 and second feeder line 52 that dwindles current feed department 5 when the arrow B direction in Fig. 9 on above-mentioned dielectric base plate 3 Widths; By the arrow among Fig. 6 A 1., the local electrical length of the RFID label antenna shown in 2. the length sum can diminish; Thereby the resonance frequency of RFID label antenna is raise; And when the width of first feeder line 51 that increases current feed department 5 to the opposite direction of arrow B and second feeder line 52, the resonance frequency of RFID label antenna is reduced.
< the conductor compensation section is to the impedance matching effect of RFID label antenna >
Want to let chip obtain maximum power, should make both reach impedance matching from the RFID label antenna.Under the situation that chip that the RFID label is adopted has been determined, must make chip and RFID label antenna reach impedance matching through the input impedance of regulating the RFID label antenna.
The inventor of the utility model finds, the width of the conductor compensation section 7 of the RFID label antenna through changing the utility model can reach the impedance matching of chip and RFID label antenna.
The RFID label of the utility model and the performance of existing RFID label are relatively
The inventor has made the test of structure as stated and has used the RFID label, and has carried out performance relatively with the RFID label of the disclosed prior art of patent documentation 1 (the artificial same applicant of the applicant of this patent documentation 1 and the application of the utility model).
The test of inventor's made has like Fig. 2,3,4, the shape shown in 5 with the RFID label, and its each parameter is following.
Dielectric base plate: material is a ceramic dielectric, is of a size of long 12 * wide by 7 * high 3mm;
First feeder line and second feeder line: shape all is banded rectangle, and size is mutually the same, the roughly whole end face of covering dielectric substrate;
The conductor compensation section: adopt two conductor compensation section, width is 4mm, and conductor compensation section 7 away from the end of current feed department 5 one sides and the end overlaid away from current feed department one side of the residing end face of this conductor compensation section, i.e. w=l;
Chip: U.S. Alien corporate system, model: H3
Other: conductor grounding parts, radiation of conductors portion, current feed department and conductor compensation section are formed by silver powder curing.
The corresponding size that RFID forming label in the patent documentation 1 is become each parts is identical with the RFID label with test, and as the comparison other of current performance in relatively.
The content of performance comparison comprises the communication distance and the operational frequency bandwidth thereof of RFID label.
In the mensuration of the communication distance of RFID label, used the Tagformance Lite system test macro of Voyantic corporate system.The result who measures, the communication distance of the RFID label of the utility model is 2.7 meters, and the communication distance of the RFID label of comparison other is 2.1 meters, the communication distance of the RFID label of the utility model obviously gets a promotion.
In the mensuration of the operational frequency bandwidth of RFID label, use the Tagformance Lite system test macro of Voyantic corporate system, the operational frequency bandwidth when having measured reading/writing distance greater than 2 meters.The result who measures; The operational frequency bandwidth of the RFID label of the utility model is that 905Mhz～935Mhz is 30Mhz; And the operational frequency bandwidth of the RFID label of comparison other is 917Mhz～923Mhz is 6Mhz, and the operational frequency bandwidth performance of the RFID label of the utility model is significantly improved.
The disclosed above-mentioned execution mode of the utility model is an illustration, and not can be considered qualification.The scope of the utility model is only for due to aforesaid content, but illustrated by the scope of claims, comprise with claims in the technical scheme that is equal to of each technical characterictic and all distortion in the scope of claims.
Claims (17)
1. RFID label antenna with collocation structure is characterized in that having:
Dielectric base plate, it is shaped as laminal cuboid;
The conductor grounding parts, it is arranged on the interarea in two interareas up and down of above-mentioned dielectric base plate, and covers whole of this interarea;
Radiation of conductors portion, it is arranged on another interarea in two interareas up and down of above-mentioned dielectric base plate, and covers whole of this another interarea;
Current feed department, it is arranged on the end face on the length direction of above-mentioned dielectric base plate, and has first feeder line and second feeder line, and this first feeder line and second feeder line are electrically connected with above-mentioned conductor grounding parts and above-mentioned radiation of conductors portion respectively;
The conductor compensation section, it is arranged at least one end face in two end faces parallel with the length direction of above-mentioned dielectric base plate, and above-mentioned conductor grounding parts and above-mentioned radiation of conductors portion are electrically connected via this conductor compensation section.
2. the RFID label antenna with collocation structure as claimed in claim 1; It is characterized in that; Above-mentioned conductor compensation section near the end of above-mentioned current feed department one side and the residing end face of this conductor compensation section away from satisfying relational expression l＜H+L/2 apart from l between the end of above-mentioned current feed department one side; Wherein, H is the height of above-mentioned dielectric base plate, and L is the length of above-mentioned dielectric base plate.
3. the RFID label antenna with collocation structure as claimed in claim 1 is characterized in that, the end near above-mentioned current feed department one side of above-mentioned conductor compensation section is positioned at and the corresponding position of the resonance frequency of above-mentioned antenna.
4. the RFID label antenna with collocation structure as claimed in claim 2 is characterized in that, the end near above-mentioned current feed department one side of above-mentioned conductor compensation section is positioned at and the corresponding position of the resonance frequency of above-mentioned antenna.
5. like each described RFID label antenna in the claim 1～4, it is characterized in that, on two end faces parallel, all be provided with the conductor compensation section respectively with the length direction of above-mentioned dielectric base plate with collocation structure.
6. the RFID label antenna with collocation structure as claimed in claim 5 is characterized in that, two above-mentioned conductor compensation section are mutually symmetrical and use identical electric conducting material.
7. like each described RFID label antenna in claim 1～4 and 6, it is characterized in that above-mentioned conductor compensation section has laterally zygomorphic shape with collocation structure.
8. the RFID label antenna with collocation structure as claimed in claim 5 is characterized in that above-mentioned conductor compensation section has laterally zygomorphic shape.
9. like each described RFID label antenna in the claim 1～4,6 and 8, it is characterized in that with collocation structure,
Above-mentioned first feeder line and second feeder line be symmetry up and down,
Above-mentioned first feeder line and second feeder line have the shape about the center line symmetry of the residing end face of above-mentioned current feed department on left and right directions respectively.
10. the RFID label antenna with collocation structure as claimed in claim 5 is characterized in that,
Above-mentioned first feeder line and second feeder line be symmetry up and down,
Above-mentioned first feeder line and second feeder line have the shape about the center line symmetry of the residing end face of above-mentioned current feed department on left and right directions respectively.
11. the RFID label antenna with collocation structure as claimed in claim 7 is characterized in that,
Above-mentioned first feeder line and second feeder line be symmetry up and down,
Above-mentioned first feeder line and second feeder line have the shape about the center line symmetry of the residing end face of above-mentioned current feed department on left and right directions respectively.
12. like each described RFID label antenna in the claim 1～4,6,8,10 and 11 with collocation structure; It is characterized in that above-mentioned first feeder line and second feeder line have and the corresponding width of the resonance frequency of above-mentioned antenna on the Width of above-mentioned dielectric base plate.
13. the RFID label antenna with collocation structure as claimed in claim 5 is characterized in that, above-mentioned first feeder line and second feeder line have on the Width of above-mentioned dielectric base plate and the corresponding width of the resonance frequency of above-mentioned antenna.
14. the RFID label antenna with collocation structure as claimed in claim 7 is characterized in that, above-mentioned first feeder line and second feeder line have on the Width of above-mentioned dielectric base plate and the corresponding width of the resonance frequency of above-mentioned antenna.
15. the RFID label antenna with collocation structure as claimed in claim 9 is characterized in that, above-mentioned first feeder line and second feeder line have on the Width of above-mentioned dielectric base plate and the corresponding width of the resonance frequency of above-mentioned antenna.
16. a RFID label is characterized in that,
Have:
Each described RFID label antenna in the claim 1 to 15 with collocation structure,
Chip, it is electrically connected with above-mentioned first feeder line and above-mentioned second feeder line respectively;
Above-mentioned conductor compensation section has can make this RFID label antenna and said chip reach the width of impedance matching.
17. a rfid system is characterized in that having:
The described RFID label of claim 16;
Carry out the reader or the read write line of radio communication with this RFID label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903799U CN202205887U (en) | 2011-06-08 | 2011-06-08 | RFID tag antenna with compensation structure, RFID tag and RFID system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903799U CN202205887U (en) | 2011-06-08 | 2011-06-08 | RFID tag antenna with compensation structure, RFID tag and RFID system |
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| Publication Number | Publication Date |
|---|---|
| CN202205887U true CN202205887U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201903799U Expired - Lifetime CN202205887U (en) | 2011-06-08 | 2011-06-08 | RFID tag antenna with compensation structure, RFID tag and RFID system |
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| CN (1) | CN202205887U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820531A (en) * | 2011-06-08 | 2012-12-12 | 刘智佳 | RFID (radio frequency identification) tag antenna with compensation structure, RFID tag and system |
| CN105184354A (en) * | 2015-09-29 | 2015-12-23 | 苏州瑞百拓电子科技有限公司 | Broadband RFID electronic tag with novel structure |
| CN112467358A (en) * | 2019-09-06 | 2021-03-09 | 东芝泰格有限公司 | Antenna and RFID tag issuing device |
-
2011
- 2011-06-08 CN CN2011201903799U patent/CN202205887U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820531A (en) * | 2011-06-08 | 2012-12-12 | 刘智佳 | RFID (radio frequency identification) tag antenna with compensation structure, RFID tag and system |
| WO2012167740A1 (en) * | 2011-06-08 | 2012-12-13 | Liu Zhijia | Rfid tag antenna with compensation structure, rfid tag and rfid system |
| US9104953B2 (en) | 2011-06-08 | 2015-08-11 | Shanghai Yaochuan Information Technology Co., Ltd. | RFID tag antenna with compensation structure, RFID tag and RFID system |
| CN102820531B (en) * | 2011-06-08 | 2016-09-28 | 刘智佳 | There is the RFID label antenna of collocation structure, RFID label tag and system |
| CN105184354A (en) * | 2015-09-29 | 2015-12-23 | 苏州瑞百拓电子科技有限公司 | Broadband RFID electronic tag with novel structure |
| CN105184354B (en) * | 2015-09-29 | 2021-04-23 | 苏州瑞百拓电子科技有限公司 | Broadband RFID electronic tag |
| CN112467358A (en) * | 2019-09-06 | 2021-03-09 | 东芝泰格有限公司 | Antenna and RFID tag issuing device |
| CN112467358B (en) * | 2019-09-06 | 2023-07-21 | 东芝泰格有限公司 | Antenna and RFID tag issuing device |
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