CN201503911U - PFID UHF optical disc label antenna - Google Patents
PFID UHF optical disc label antenna Download PDFInfo
- Publication number
- CN201503911U CN201503911U CN2009202060656U CN200920206065U CN201503911U CN 201503911 U CN201503911 U CN 201503911U CN 2009202060656 U CN2009202060656 U CN 2009202060656U CN 200920206065 U CN200920206065 U CN 200920206065U CN 201503911 U CN201503911 U CN 201503911U
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- CN
- China
- Prior art keywords
- antenna
- opening
- uhf
- hollow internal
- label
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Abstract
The utility model discloses a PFID UHF optical disc label antenna. The antenna is a fan ring-shaped antenna, in addition, a hollow inner separation layer is arranged on the upper end of the antenna, and an opening is arranged in the middle of the upper end of the hollow inner separation layer. The PFID UHF optical disc label antenna is in the fan ring shape, the hollow inner separation layer is arranged on the upper end of the antenna, in addition, the opening for fixing chips is arranged in the middle of the upper end of the hollow inner separation layer, and the lower end of the hollow inner separation layer is an opening. Compared with the prior art, the utility model has the advantages that through the design of the special shape, the PFID UHF antenna has good radiation characteristics in the vertical direction and has good radiation surfaces, and at the same time, an antenna metal layer can be matched with the antenna for improving the characteristics of the antenna for adapting to the resistance parameters of various chips.
Description
Technical field
The utility model relates to the RFID antenna, particularly a kind of RFID UHF label antenna that is used for CD.
Background technology
(Radio Frequency Identification, RFID) technology is a kind of automatic identification technology of rising in recent years to radio-frequency (RF) identification.The basic module of its system comprises RFID electronic tag, rfid interrogator and antenna.Wherein, antenna is a kind of device that the radiofrequency signal power of wireless set is received or radiate with the electromagnetic wave form.In rfid system, antenna is divided into two kinds of label antenna and reading and writing device antennas.The target of label antenna is the maximum energy turnover label chip of transmission: during emission, be high frequency current transitions electromagnetic wave; During reception, electromagnetic wave is converted to high-frequency current.
The RFID technology has been widely used in a plurality of fields such as logistics, retail, military affairs, city management, taking care of books, food security, tourism at present.And in fields such as taking care of books, tourism, the use that often RFID label and CD need be organically combined is to reach the purpose of propaganda, false proof and security identification.
Because the restriction of shape of CD own and volume size, at present normally with RFID UHF label system annular, to be fixed on the annular free of data zone of cd centre, (inductance is too big but the impedance of little loop antenna is difficult to regulate, and be difficult to regulate), so be difficult to regulate according to different chips.
In addition, because RFID UHF label is to be abutted against the electromagnetic wave of receiving certain energy to come work, these electromagnetic waves are sent by RFID UHF card reader, and electromagnetic wave is decayed in air, therefore remote electromagnetic field energy is strong inadequately, is not enough to allow the work of RFID UHF label; And the aluminium target of disk inner is metal, absorbs electromagnetic wave easily, also can receive electromagnetic wave to RFID UHF label and exert an influence.
Hence one can see that, present RFID UHF CD antenna is because the clearance spaces of cd centre is limited, the area of antenna is too little in Antenna Design, and the problem of radiation direction and coupling be difficult to solve, therefore caused the Card Reader distance short, with the problem of chip matching effect difference.
Summary of the invention
For this reason, the purpose of this utility model is to provide a kind of RFID UHF CD antenna, with solve existing RFID UHF CD antenna Card Reader apart from weak point, with the problem of chip matching effect difference.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of RFID UHF CD antenna, described antenna is fan loop aerial (1), and this fan loop aerial (1) upper end is provided with a hollow internal portioning layer (4), the middle opening (2) that is provided with in described hollow internal portioning layer (4) upper end.
Wherein said fan loop aerial (1) lower end is provided with opening (3), and the scope of this opening (3) corresponding angle α is 10 °～180 °.
The scope of wherein said fan loop aerial (1) upper end hollow internal portioning layer (4) corresponding angle β is 10 °～180 °.
Be fixed with chip in wherein said hollow internal portioning layer (4) the upper end middle opening (2), and the width of opening (2) is 2mm.
The width of wherein said hollow internal portioning layer (4) is 2mm～10mm.
Be printed with silver layer on the wherein said fan loop aerial (1).
The outer ring diameter of wherein said fan loop aerial (1) is 30mm～40mm.
The interior ring diameter of wherein said fan loop aerial (1) is 15mm～25mm.
Outer wall (6) width of wherein said hollow internal portioning layer (4) is 1mm.
Inwall (5) width of wherein said hollow internal portioning layer (4) is 1mm.
RFID UHF CD antenna described in the utility model is provided with a hollow internal portioning layer for fan annular, its upper end, and is provided with the opening of a fixed chip in the middle of the hollow internal portioning layer upper end; The lower end then is an opening.Compared with prior art, the utility model makes RFID UHF antenna in vertical direction radiation characteristic preferably be arranged by special shaped design, and radiating surface is preferably also arranged, also can cooperate the metal level of antenna to improve its characteristic simultaneously, to adapt to the reactance parameter of various chips.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is installed in the view of cd centre for the utility model.
Identifier declaration among the figure: fan loop aerial 1, opening 2, opening 3, hollow internal portioning layer 4, inwall 5, outer wall 6, CD 7.
Embodiment
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also Fig. 1, shown in Figure 2, Fig. 1 is a structural representation of the present utility model.The utility model provides a kind of RFID UHF CD label antenna, be installed in the annular free of data zone at CD 7 centers, this antenna is the fan annular, and the upper end of described fan loop aerial 1 is provided with a hollow internal portioning layer 4, be provided with a vertical opening 2 in the middle of the upper end of described hollow internal portioning layer 4, opening 2 is used for fixing installs corresponding antenna chip.
Evenly be printed with silver layer on the wherein said fan loop aerial 1, and the thickness of entire antenna is 0.01um-0.1um, and its outer ring diameter is 30mm～40mm, and interior ring diameter is 15mm～25mm, and the width of hollow internal portioning layer 4 is 2mm～10mm, and the scope of its corresponding angle β is 10 °～180 °; The outer wall 6 of hollow internal portioning layer 4 and the width of inwall 5 are 1mm.
In addition, fan loop aerial 1 lower end is provided with opening 3, and this opening 3 is corresponding with above-mentioned hollow internal portioning layer 4, and the scope of its corresponding angle α is 10 °～180 °.
Wherein said antenna is reserved with three parameters that can regulate, is respectively the angle beta of upper end fixed chip opening, the width of the angle [alpha] of lower openings and hollow internal portioning layer.By changing the reactance parameter that these three parameters can adapt to various different chips, to realize good coupling.
The utility model makes RFID UHF antenna in vertical direction radiation characteristic preferably be arranged by special shaped design, and radiating surface is preferably also arranged, and also can cooperate the metal level of antenna to improve its characteristic simultaneously.
More than a kind of RFID UHF CD label antenna provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a RFID UHF CD label antenna is characterized in that described antenna is fan loop aerial (1), and this fan loop aerial (1) upper end is provided with a hollow internal portioning layer (4), the middle opening (2) that is provided with in described hollow internal portioning layer (4) upper end.
2. CD label antenna according to claim 1 is characterized in that described fan loop aerial (1) lower end is provided with opening (3), and the scope of this opening (3) corresponding angle α is 10 °～180 °.
3. CD label antenna according to claim 1 is characterized in that the scope of described fan loop aerial (1) upper end hollow internal portioning layer (4) corresponding angle β is 10 °～180 °.
4. according to claim 1 or 3 described CD label antennas, it is characterized in that being fixed with chip in described hollow internal portioning layer (4) the upper end middle opening (2), and the width of opening (2) is 2mm.
5. according to claim 1 or 3 described CD label antennas, the width that it is characterized in that described hollow internal portioning layer (4) is 2mm～10mm.
6. CD label antenna according to claim 1 is characterized in that being printed with silver layer on the described fan loop aerial (1).
7. CD label antenna according to claim 1 is characterized in that the outer ring diameter of described fan loop aerial (1) is 30mm～40mm.
8. CD label antenna according to claim 1 is characterized in that the interior ring diameter of described fan loop aerial (1) is 15mm～25mm.
9. according to claim 1 or 3 described CD label antennas, it is characterized in that outer wall (6) width of described hollow internal portioning layer (4) is 1mm.
10. according to claim 1 or 3 described CD label antennas, it is characterized in that inwall (5) width of described hollow internal portioning layer (4) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202060656U CN201503911U (en) | 2009-10-20 | 2009-10-20 | PFID UHF optical disc label antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202060656U CN201503911U (en) | 2009-10-20 | 2009-10-20 | PFID UHF optical disc label antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503911U true CN201503911U (en) | 2010-06-09 |
Family
ID=42454840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202060656U Expired - Fee Related CN201503911U (en) | 2009-10-20 | 2009-10-20 | PFID UHF optical disc label antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811858A (en) * | 2014-01-28 | 2014-05-21 | 杭州电子科技大学 | RFID (radio frequency identification) tag antenna and corresponding optical disk |
| CN103972640A (en) * | 2014-04-17 | 2014-08-06 | 杭州电子科技大学 | Ultrahigh RFID near field antenna |
-
2009
- 2009-10-20 CN CN2009202060656U patent/CN201503911U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811858A (en) * | 2014-01-28 | 2014-05-21 | 杭州电子科技大学 | RFID (radio frequency identification) tag antenna and corresponding optical disk |
| CN103811858B (en) * | 2014-01-28 | 2016-07-06 | 杭州电子科技大学 | RFID label antenna and corresponding CD |
| CN103972640A (en) * | 2014-04-17 | 2014-08-06 | 杭州电子科技大学 | Ultrahigh RFID near field antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20131020 |