CN101997158A - Slot antenna based ultrahigh radio frequency identification tag antenna - Google Patents
Slot antenna based ultrahigh radio frequency identification tag antenna Download PDFInfo
- Publication number
- CN101997158A CN101997158A CN2009101020425A CN200910102042A CN101997158A CN 101997158 A CN101997158 A CN 101997158A CN 2009101020425 A CN2009101020425 A CN 2009101020425A CN 200910102042 A CN200910102042 A CN 200910102042A CN 101997158 A CN101997158 A CN 101997158A
- Authority
- CN
- China
- Prior art keywords
- slit
- slot
- antenna
- radio frequency
- radio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a slot antenna based ultrahigh radio frequency identification tag antenna, comprising a substrate, a metal surface, a first slot, a second slot and a radio frequency identification chip; wherein the metal surface is arranged on the upper surface of the substrate, the first slot and the second slot are arranged on the metal surface, the first slot is a line and transformation thereof, the second slot is in U shape, the two ends of the second slot are intersected with the first slot, so as to form a slot loop, and the radio frequency identification chip is arranged at the middle part of the first slot and connects the upper and lower sides of the metal surface at the middle part of the first slot. The ultrahigh radio frequency identification tag manufactured by the invention can be used on the metal surface or in the slot of the metal surface.
Description
Technical field
The present invention relates to the REID field, relate in particular to a kind of can conveniently be applied on the metal flat or the metal flat slit among the super high frequency radio frequency identification label antenna based on slot antenna.
Background technology
Super high frequency radio frequency identification (Ultra high frequency radio frequency identification is called for short UHF RFID) is a kind of automatic identification technology that utilizes the radio frequency reading tag.Generally be made up of reader (Reader) and label (Tag), reader is by the information on the remote reading tag of radio frequency.Compare with conventional barcode, it has advantages such as the distance of reading, fast, the non-visual recognition of reading speed, support fast reading and writing.Super high frequency radio frequency identification label generally refers to passive label, and promptly power supply devices such as battery are not carried in label inside.Super high frequency radio frequency identification label obtains energy with the activation label chip by the antenna received RF, and the information of chip is transmitted to reader by backscattered modulation.Because super high frequency radio frequency identification passive label does not need battery and has the distance that reads far away, has wide application space in various fields such as logistics supply chain, the production automation, traffic administration and security protections.
In quite a few super high frequency radio frequency identification is used, label need be pasted on metal plate or the metal flat, for example: vehicle explosion-proof film, license plate, cigarette tinfoil paper etc.Because common label can't be applied to the metal surface, need to adopt the label of particular design, be called anti-metal tag or metal label.General anti-metal tag adopts micro-strip paster antenna or planar inverted-F antenna as label antenna, can be with the ground level of metal surface as antenna.But common anti-metal tag antenna all needs to be attached to the metal surface, and the partial volume of antenna protrudes in the metal surface, and volume characteristic is apparent in view.If with metal plate or metal flat digs out a hole or the general thin label is pasted in the slit, under hole or slit were not very big situation, the performance of label still was subjected to the metal environmental impact very big, and performance degradation is serious.Employing is based on the super high frequency radio frequency identification label antenna of slot antenna, then label can be made on the metal plate or label be embedded among the slit of metal plate.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of super high frequency radio frequency identification label antenna based on slot antenna is provided.
The objective of the invention is to be achieved through the following technical solutions: a kind of super high frequency radio frequency identification label antenna based on slot antenna comprises substrate, metal covering, first slit, second slit, radio-frequency (RF) identification chip; Metal covering is positioned at substrate upper surface, first slit, second slit are positioned on the metal covering, first slit is straight line and distortion thereof, second slit is a U-shaped, the two ends in second slit and first slit are intersected and are formed a slit loop, radio-frequency (RF) identification chip is positioned at middle part, first slit, connects the up and down both sides of metal covering in middle part, first slit.
Further, described super high frequency radio frequency identification label antenna based on slot antenna, it is characterized in that described metal covering, first slit, second slit, radio-frequency (RF) identification chip are in the upper surface of substrate together, first slit and second slit are formed by the metal covering etching.The two ends of described first slot can be straight line, folding line or fold line.Described second slot is the U-shaped slit, comprise the shoulder of a centre and be connected the arm at two ends, the shoulder of second slot is parallel with first slit, and the arm of second slot is vertical with first slit, arm and shoulder meet at right angles, and the part in second slot and first slit forms a closed loop.Described first slit and the second slit left-right symmetric, and the axis overlaps.Described radio-frequency (RF) identification chip is positioned at the middle in first slit, and an end of radio-frequency (RF) identification chip connects the side of metal covering in middle part, first slit, and the other end of radio-frequency (RF) identification chip connects the opposite side of metal covering in middle part, first slit.
The invention has the beneficial effects as follows: super high frequency radio frequency identification label of the present invention can be applied on the metal flat or among the slit of metal flat.
Description of drawings
Fig. 1 is based on the super high frequency radio frequency identification label antenna structure view of slot antenna;
Fig. 2 is based on the super high frequency radio frequency identification label antenna vertical view of slot antenna;
Fig. 3 is based on the super high frequency radio frequency identification label antenna side view of slot antenna;
Fig. 4 is based on the application schematic diagram in the super high frequency radio frequency identification label metal flat slit of slot antenna;
Fig. 5 is that the slot antenna two ends are the super high frequency radio frequency identification label antenna structure view of folding line;
Fig. 6 is that the slot antenna two ends are the super high frequency radio frequency identification label antenna structure view of fold line;
Among the figure: substrate 1, metal covering 2, radio-frequency (RF) identification chip 3, first slit 4, second slit 5, metal flat 6, slit 7 on the metal flat, super high frequency radio frequency identification label 8 based on slot antenna, middle straight line length 41 when first slit 4 is folding line, width 42 between folding line when first slit 4 is folding line, folding line height 43 when first slit 4 is folding line, middle straight line length 44 when first slit 4 is fold line, fold line height 45 when first slit 4 is fold line, fold line inflection length 46 when first slit 4 is fold line.
Embodiment
Super high frequency radio frequency identification label is a passive label, generally is made up of label antenna and label chip.Label antenna and label chip all are complex impedance.Label obtains energy and inquiry instruction from the request signal of reader antenna emission.When label obtained enough energy, label chip was activated.After label chip was activated, corresponding actions was carried out in its inquiry instruction according to reader, and launches data by backscattered modulation.For super high frequency radio frequency identification label, how the tag design antenna is the most important to obtain enough energy activated label chips.For label antenna, need antenna to have radiance preferably on the one hand, then need label antenna and label chip impedance matching on the other hand, realize the ceiling capacity transmission to allow.
The present invention realizes the design of metal flat embedded type super high frequency radio frequency identification label antenna by adopting slot antenna.Below so that can be applied to the super high frequency radio frequency identification label antenna based on slot antenna in the metal flat slit be embodiment and in conjunction with the accompanying drawings the present invention is described in detail.
Present embodiment is for to be applied to the super high frequency radio frequency identification label antenna in the slit on the windshield rear surface rupture pressure disc (based on metal coating or metal sandwich), and the metal rupture pressure disc is equivalent to metal flat.Wherein the two ends in first slit 4 are straight line.
As shown in Figure 1, 2, 3, the super high frequency radio frequency identification label antenna that the present invention is based on slot antenna comprises: substrate 1, metal covering 2, first slit 4, second slit 5, radio-frequency (RF) identification chip 3; Wherein, metal covering 2 is positioned at substrate 1 upper surface, first slit 4, second slit 5 are positioned on the metal covering 2, first slit 4 is a straight line, second slit 5 is a U-shaped, the two ends in second slit 5 and first slit 4 are intersected and are formed a slit loop, and radio-frequency (RF) identification chip 3 is positioned at 5 middle parts, first slit, connects the up and down both sides of metal covering 2 in 4 middle parts, first slit.Metal covering 2, first slit 4, second slit 5, radio-frequency (RF) identification chip 3 are in the upper surface of substrate 1 together, and first slit 4 and second slit 5 are formed by metal covering 2 etchings.The two ends of first slot (4) are straight line.Second slot 5 is the U-shaped slit, comprise the shoulder of a centre and be connected the arm at two ends, the shoulder of second slot 5 is parallel with first slit 4, and the arm of second slot 5 is vertical with first slit 4, arm and shoulder meet at right angles, and the part in second slot 5 and first slit 4 forms a closed loop.First slit 4 and second slit, 5 left-right symmetric, and the axis overlaps.Radio-frequency (RF) identification chip 3 is positioned at the middle in first slit 4, and an end of radio-frequency (RF) identification chip 3 connects the side of metal covering 2 in 4 middle parts, first slit, and the other end of radio-frequency (RF) identification chip 3 connects the opposite side of metal covering 2 in 4 middle parts, first slit.
For super high frequency radio frequency identification label, its radio-frequency (RF) identification chip 3 generally is a complex impedance.In order to realize the ceiling capacity transmission of antenna and chip, then need the input impedance and the chip impedance conjugate impedance match of antenna, this just requires the real part of antenna feed impedance and imaginary part all to have the ability of regulating flexibly.For label antenna of the present invention, can change resonance frequency by the length of regulating first slit 4, thereby change the resistance value at fixed frequency place, can regulate reactance value by the length of regulating second slit 5.Therefore, by first slit 4 of reasonable change antenna and the size in second slit 5, then can realize the control of antenna resonant frequency and the impedance conjugate impedance match of antenna and chip preferably.
The thickness of getting windshield is 5mm, dielectric constant is 5.5, and loss angle tangent is 0, and substrate 1 adopts the PET material, metal covering 2 is for covering copper, and radio-frequency (RF) identification chip 3 adopts the RI_UHF_00001_01 model ultra-high frequency RFID label chip of TI (Texas Instruments) company.Getting substrate 1 relative dielectric constant is 3.9, loss angle tangent is 0.002, thickness is 0.05mm, the length of metal covering 2 is 200mm, and the width of metal covering 2 is 40mm, and the length in first slit 4 on the metal covering 2 is that 98mm, width are 1mm, second slit 5 is the U-shaped slit, the shoulder length of U-shaped slot is 24mm, and the brachium in U slit is 6mm, and the impedance of radio-frequency (RF) identification chip 3 is 10-j60 Ω.Under this parameter, label can be operated in the frequency band range of hyperfrequency 920MHz～925MHz, and the coverage under reader 2W (ERP) readout power is about 4 meters.
In actual applications, as shown in Figure 4, can will should be embedded in the slit 7 among the metal flat 6 (the vehicle explosion-proof film of embedded metal grid) based on the super high frequency radio frequency identification label 8 of slot antenna, the metal covering 2 of label 8 can be embedded into metal flat 6 and be connected.The radio-frequency identification reader that employing meets ISO18000-6C promptly can be read and write the information of this label.
The present embodiment applied environment is similar to embodiment 1, and wherein the two ends in first slit 4 are folding line.
The present embodiment applied environment is similar to embodiment 1, and wherein the two ends in first slit 4 are fold line.
Such scheme is three kinds of embodiments of the present invention, multiple different application scheme can be arranged under feature according to the invention, but these application schemes needs only feature according to the invention, all should belong to the scope of the present invention.
Claims (6)
1. the super high frequency radio frequency identification label antenna based on slot antenna is characterized in that, comprises substrate (1), metal covering (2), first slit (4), second slit (5), radio-frequency (RF) identification chip (3); Wherein, metal covering (2) is positioned at substrate (1) upper surface, first slit (4), second slit (5) are positioned on the metal covering (2), first slit (4) is straight line and distortion thereof, second slit (5) is a U-shaped, the two ends in second slit (5) and first slit (4) are intersected and are formed a slit loop, and radio-frequency (RF) identification chip (3) is positioned at middle part, first slit (4), connect the up and down both sides of metal covering (2) in middle part, first slit (4).
2. a kind of super high frequency radio frequency identification label antenna according to claim 1 based on slot antenna, it is characterized in that described metal covering (2), first slit (4), second slit (5), radio-frequency (RF) identification chip (3) are in the upper surface of substrate (1) together, first slit (4) are formed by metal covering (2) etching with second slit (5).
3. a kind of super high frequency radio frequency identification label antenna based on slot antenna according to claim 1 is characterized in that the two ends of described first slot (4) can be straight line, folding line or fold line.
4. a kind of super high frequency radio frequency identification label antenna according to claim 1 based on slot antenna, it is characterized in that described second slot (5) is the U-shaped slit, comprise the shoulder of a centre and be connected the arm at two ends, the shoulder of second slot (5) is parallel with first slit (4), the arm of second slot (5) is vertical with first slit (4), arm and shoulder meet at right angles, and second slot (5) forms a closed loop with the part in first slit (4).
5. according to the described super high frequency radio frequency identification label antenna of claim 1, it is characterized in that based on slot antenna, described first slit (4) and second slit (5) left-right symmetric, and the axis overlaps.
6. according to the described super high frequency radio frequency identification label antenna of claim 1 based on slot antenna, it is characterized in that, described radio-frequency (RF) identification chip (3) is positioned at the middle of first slit (4), one end of radio-frequency (RF) identification chip (3) connects the side of metal covering (2) in middle part, first slit (4), and the other end of radio-frequency (RF) identification chip (3) connects the opposite side of metal covering (2) in middle part, first slit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101020425A CN101997158A (en) | 2009-08-27 | 2009-08-27 | Slot antenna based ultrahigh radio frequency identification tag antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101020425A CN101997158A (en) | 2009-08-27 | 2009-08-27 | Slot antenna based ultrahigh radio frequency identification tag antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101997158A true CN101997158A (en) | 2011-03-30 |
Family
ID=43786975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101020425A Pending CN101997158A (en) | 2009-08-27 | 2009-08-27 | Slot antenna based ultrahigh radio frequency identification tag antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101997158A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408510A (en) * | 2014-08-27 | 2015-03-11 | 北京中电华大电子设计有限责任公司 | A plane gap label |
| CN107946737A (en) * | 2017-11-06 | 2018-04-20 | 徐州工程学院 | A kind of car plate and its manufacture method with radio frequency recognition function |
| CN110610222A (en) * | 2019-08-09 | 2019-12-24 | 福耀玻璃工业集团股份有限公司 | Vehicle window glass and vehicle |
| WO2020103335A1 (en) * | 2018-11-22 | 2020-05-28 | 南京思追特电子科技有限公司 | Ultra-high frequency radio frequency identification microstrip and ultra-high frequency radio frequency identification reader and writer |
-
2009
- 2009-08-27 CN CN2009101020425A patent/CN101997158A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408510A (en) * | 2014-08-27 | 2015-03-11 | 北京中电华大电子设计有限责任公司 | A plane gap label |
| CN107946737A (en) * | 2017-11-06 | 2018-04-20 | 徐州工程学院 | A kind of car plate and its manufacture method with radio frequency recognition function |
| WO2020103335A1 (en) * | 2018-11-22 | 2020-05-28 | 南京思追特电子科技有限公司 | Ultra-high frequency radio frequency identification microstrip and ultra-high frequency radio frequency identification reader and writer |
| CN110610222A (en) * | 2019-08-09 | 2019-12-24 | 福耀玻璃工业集团股份有限公司 | Vehicle window glass and vehicle |
| CN110610222B (en) * | 2019-08-09 | 2020-11-17 | 福耀玻璃工业集团股份有限公司 | Vehicle window glass and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101355195A (en) | UHF RF dual-frequency-recognizing metal-resistance label antenna | |
| US8004468B2 (en) | RIFD device with microstrip antennas | |
| CN101752648B (en) | Broadband RFID UHF antenna and tag and manufacturing method of tag | |
| EP2525441A1 (en) | Miniaturized radio-frequency identification tag and microstrip patch antenna thereof | |
| CN102437421A (en) | Anti-metal tag antenna applied in RFID (radio frequency identification device) system on UHF (ultra high frequency) band | |
| CN101777693A (en) | Ultrahigh frequency radio frequency identification anti-metal tag antenna with plane structure | |
| CN103903048A (en) | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag | |
| CN102147877A (en) | Electronic tag | |
| CN104751223A (en) | Ultrahigh-frequency radio frequency recognition electronic tag of intelligent traffic system | |
| CN101997158A (en) | Slot antenna based ultrahigh radio frequency identification tag antenna | |
| CN201191647Y (en) | RFID electronic label antenna having dual T type slot radiation element | |
| CN201576738U (en) | Ultrahigh frequency radio-frequency identification tag antenna based on folding silt antenna | |
| CN101533946B (en) | Micro embedded UHF radio frequency identification anti-metal tag antenna | |
| CN201117814Y (en) | Label antenna | |
| US8115688B2 (en) | RF conduit and systems implementing same | |
| CN201117802Y (en) | Ultra- wide-band electronic label antenna | |
| CN202042597U (en) | Electronic tag directional antenna for enhancing property of RFLD tag | |
| CN201112565Y (en) | High-performance Yagi electronic label antenna | |
| CN201425966Y (en) | Micro embedded anti-metal marker tag antenna for ultrahigh radio frequency identification | |
| CN201584492U (en) | Ultra-high radio frequency identification tag antenna based on bending slot antenna | |
| CN200986970Y (en) | Balanced antenna of high gain wideband | |
| CN201378630Y (en) | Bent slot antenna for ultrahigh-frequency radio-frequency tag | |
| CN201741797U (en) | Super-high-frequency radio frequency identification tag antenna based on slit antenna | |
| CN201117815Y (en) | Low cost broad band small volume high gain linear polarization antenna | |
| CN201655969U (en) | Ultra-high frequency radio-frequency identification label antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110330 |