CN202205889U - Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface - Google Patents
Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface Download PDFInfo
- Publication number
- CN202205889U CN202205889U CN 201120330992 CN201120330992U CN202205889U CN 202205889 U CN202205889 U CN 202205889U CN 201120330992 CN201120330992 CN 201120330992 CN 201120330992 U CN201120330992 U CN 201120330992U CN 202205889 U CN202205889 U CN 202205889U
- Authority
- CN
- China
- Prior art keywords
- antenna
- radiating element
- arms
- frequency band
- microwave frequency
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model relates to a microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to a nonmetal surface, comprising a medium plate, a micro-strip radiating element, a parasitic radiating element and a tag chip port, wherein the micro-strip radiating element is arranged on the surface of the medium plate; the tag chip port is located on the axial line of the medium plate; the micro-strip radiating element is a bending dipole sub antenna, of which the two arms are connected with the tag chip port; after extending levelly to the two sides around the tag chip port, the two arms bend upwards so as to form a vertical part; the parasitic radiating element comprises two radiating arms, of which the bottom ends are parallel to the lower part of the dipole sub antenna; after the two radiating arms extend vertically and upwards from the parallel end below the dipole sub antenna, the arms bend inwards and the dipole sub antenna extends along the level direction to form a surrounding shape and not connect. The gap antenna is convenient to apply to the nonmetal surface, easy to process, has small volume, and simple structure; the tag antenna is in conjugated matching with a tag chip at a resonance frequency (2.45GHz) so that the tag chip obtains the biggest power.
Description
Technical field
The utility model relates to field of radio frequency, specifically is meant a kind of RFID label antenna that is applied to the microwave frequency band of nonmetallic surface.The RFID electronic tag belongs to field of radio frequency identification, specifically relates to a kind of microwave frequency band that can be used for, that is: 2400MHz-2483MHz, and resonance frequency can conveniently be applied to the frequency identification electronic label antenna of nonmetallic surface at 2450MHz.
Background technology
Along with the proposition of Internet of Things notion, relative technology has all obtained develop rapidly.As the soldier at the head of a formation of Internet of Things development, REID (Radio Frequency Identification is called for short RFID) becomes the technology that market is paid close attention to the most.Radio frequency identification (RFID) technology is a kind ofly to carry out contactless bidirectional data communication and the automatic identification technology of relevant information is discerned and obtained to target through wireless radio frequency mode.REID has characteristics such as reading/writing distance is long, data capacity is big, safe and reliable, and these characteristics make it be widely used in fields such as logistics and storehouse management.Radio-frequency recognition system mainly is made up of information processing system, reader and electronic tag three parts.Electronic tag is made up of label antenna and label chip, carries out data transmit-receive through electromagnetic wave and reader.In rfid system, electronic tag is born the effect of the reception and the information of transmission, and whole rfid system is played key effect.
The operating frequency of rfid system has low frequency 100-500KHz, high frequency 13.56MHz, hyper band 860-960MHz, and microwave frequency band 2.45GHz and 5.8GHz.But the RFID label antenna of microwave frequency band runs into a lot of problems in design with in using, and relatively more outstanding is exactly when label is attached on the object, because the complexity of environment; If bandwidth is wide inadequately; Will produce frequency deviation, reading distance reduces, even causes label to be read.In order to guarantee label ability operate as normal, the bandwidth that is necessary to increase label antenna is to satisfy the demand.
When design RFID label antenna, except will considering above difficult point, characteristics such as also need make the RFID label antenna possess that input impedance is easy to adjust, volume is little, processing is simple and cost is low.How can satisfy under the prerequisite of these restrictive conditions the problem that needs emphasis to consider when making the performance of label antenna reach tag design antenna preferably.
Summary of the invention
The problem that the need of the utility model solve is to existing RF tag design difficulty, to provide a kind of and be applied to nonmetallic surface, have wider bandwidth and volume microwave section RFID electronic label antenna little, simple in structure.
For addressing the above problem, the utility model is realized through following technical scheme:
A kind of microwave frequency band RFID label antenna that is applied to nonmetallic surface comprises dielectric-slab and is arranged on dielectric-slab surperficial metal level and label chip port; Said label chip port is positioned on the axis of dielectric-slab; Said metal level comprises little band radiating element and parasitic radiation unit; Said little band radiating element is the dipole antenna of bending; Two arms of dipole antenna link to each other with said label chip port, and being the center symmetry after the both sides horizontal-extending forms horizontal part again with the label chip port, upwards bending vertically continues to extend to form vertical component effect.
Said parasitic radiation unit comprises corresponding respectively two radiation arms that are arranged at two arm both sides of dipole antenna; Two radiation arm bottoms and dipole antenna parallel beneath; Two radiation arms respectively by with bend inwards again after the parallel end of dipole antenna parallel beneath extends straight up and along continuous straight runs continues to extend the gesture that the electrode couple sub antenna forms encirclement, but two radiation arms do not join.
The resonance frequency that said microwave frequency band is corresponding is 2.45GHz.
Said dielectric-slab is that dielectric constant is 2.2-6, and the thickness of sheet material is the microwave sheet material of 1-2mm.
With respect to prior art, the utlity model has following advantage:
(1) radiating element of said antenna adopts bending and parasitic element to load two kinds of technology, makes antenna and label chip reach conjugate impedance match at the center resonant frequency place, at microwave frequency band lower return loss is arranged;
(2) little band radiating element of said antenna adopts the dipole structure of bending; This structure can increase the active path of electric current effectively; Thereby reduce antenna volume, reach the purpose of antenna miniaturization, and through changing the size of bending place length; Can under the situation that does not change the antenna resistance value basically, change the reactance value of antenna, thereby realize impedance matching for different resistance values;
(3) parasitic element adopts the load mode that centers on dipole lower, parallel, top in the said antenna; This structure can be finely tuned the resistance value of antenna effectively; Thereby better realize the conjugate impedance match of label antenna and chip used impedance, make chip used acquisition maximum transmission power;
(4) said antenna totally has low section, volume is little, simple in structure, handling ease, characteristics such as with low cost.
Description of drawings
Fig. 1 is the structural representation of the said antenna of the utility model;
Fig. 2 is the return loss analogous diagram of the said antenna of the utility model;
Fig. 3 is the impedance operator analogous diagram of the said antenna of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation, but the utility model requires the scope of protection to be not limited to down the scope of example statement.
As shown in Figure 1; The said microwave frequency band RFID label antenna that is applied to nonmetallic surface of the utility model comprises dielectric-slab 1, and dielectric-slab 1 surface is provided with metal level as radiating element; And label chip port 4 is set, label chip port 4 is positioned on the axis of dielectric-slab 1.Radiating element comprises little band radiating element 2 and parasitic radiation unit 3 two parts.
Wherein, Little band radiating element 2 is the dipole antenna of bending; Two arms of dipole antenna link to each other with label chip port 4, are that the center symmetry upwards is bent to form vertical component effect again after the both sides horizontal-extending forms horizontal-extending portion with label chip port 4, and its vertical stretch is wideer than horizontal-extending portion.Parasitic radiation unit 3 comprises corresponding respectively two radiation arms that are arranged at two arm both sides of dipole antenna; Two radiation arm bottoms and dipole antenna parallel beneath; Two radiation arms respectively by with all bend inwards after the parallel end of dipole antenna parallel beneath extends straight up and along continuous straight runs extends the gesture that the electrode couple sub antenna forms encirclement; But two radiation arms do not join, and promptly leave the slit between two radiation arms.
During practical implementation, dielectric-slab 1 adopts microwave sheet material, and generally choosing dielectric constant is 2.2-6, and base material thickness is the sheet material of 1-2mm.Radiating element uses metal materials such as copper, aluminium to make.Label antenna port 4 is an antenna current feed port, promptly connects label chip.This antenna can be realized impedance matching through changing antenna structure and chip.The kink height of little band radiating element 2 and width and parasitic radiation unit 3 can carry out appropriate design as required around the length and the width of little band radiating element 2, make the utility model antenna realize conjugate impedance match with the label chip of different resistance values.
The little band radiating element 2 of the dipole antenna configuration of employing folding line and the parasitic radiation unit 3 of bending help reducing the size of antenna, and the size of two radiating elements is mutually adjusted also can better realize conjugate impedance match with the chip of being selected for use.
Fig. 2 is the impedance operator analogous diagram of the said antenna of the utility model, and m1 is antenna reactance characteristic Simulation figure, and m2 is antenna resistance characteristic Simulation figure.This emulation hypothesis chip impedance is 50 ohm.Label antenna and chip from figure, can see that this antenna is 50 ohm at the resistance value of 2.45GHz, and the variation of the real part of antenna feed impedance and imaginary part compare all slowly, it is thus clear that can be realized conjugate impedance match preferably near 2.45GHz.
Fig. 3 is the return loss analogous diagram of the said antenna of the utility model.Visible from figure, this antenna resonance has realized good impedance matching here at 2.45GHz.< frequency range of 10dB is 2.362GHz-2.610GHz to S11, and bandwidth is 248MHz, has the bandwidth of broad, can compensate label because the frequency shift (FS) of making or producing when placing on the object.
The foregoing description is the preferred version that the utility model is realized; And indefiniteness is exhaustive; The utility model can also have other variations under same idea; Need to prove that under the prerequisite that does not break away from the utility model inventive concept, any conspicuous replacement is all within protection range of the present invention.
Claims (4)
1. microwave frequency band RFID label antenna that is applied to nonmetallic surface; Comprise dielectric-slab (1) and be arranged on dielectric-slab surperficial metal level and label chip port (4), it is characterized in that: said label chip port (4) is positioned on the axis of dielectric-slab (1); Said metal level comprises little band radiating element (2) and parasitic radiation unit (3); Said little band radiating element (2) is the dipole antenna of bending; Two arms of dipole antenna link to each other with said label chip port, and being the center symmetry after the both sides horizontal-extending forms horizontal part again with the label chip port, upwards bending vertically continues to extend to form vertical component effect;
Said parasitic radiation unit (3) comprises corresponding respectively two radiation arms that are arranged at two arm both sides of dipole antenna; Two radiation arm bottoms and dipole antenna parallel beneath; Two radiation arms respectively by with bend inwards again after the parallel end of dipole antenna parallel beneath extends straight up and along continuous straight runs continues to extend the gesture that the electrode couple sub antenna forms encirclement, but two radiation arms do not join.
2. the microwave frequency band RFID label antenna that is applied to nonmetallic surface according to claim 1 is characterized in that the vertical stretch of said little band radiating element (2) is wideer than horizontal-extending portion.
3. the microwave frequency band RFID label antenna that is applied to nonmetallic surface according to claim 2 is characterized in that, the resonance frequency that said microwave frequency band is corresponding is 2.45GHz.
4. the microwave frequency band RFID label antenna that is applied to nonmetallic surface according to claim 3 is characterized in that, said dielectric-slab (1) adopts 2.2-6 for dielectric constant, and the thickness of sheet material is the microwave sheet material of 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120330992 CN202205889U (en) | 2011-09-06 | 2011-09-06 | Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120330992 CN202205889U (en) | 2011-09-06 | 2011-09-06 | Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202205889U true CN202205889U (en) | 2012-04-25 |
Family
ID=45969990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120330992 Expired - Fee Related CN202205889U (en) | 2011-09-06 | 2011-09-06 | Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202205889U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904023A (en) * | 2012-10-23 | 2013-01-30 | 北京邮电大学 | Two-sided subminiature RFID (radio frequency identification) tag antenna |
| CN105490013A (en) * | 2015-12-31 | 2016-04-13 | 上海炘璞电子科技有限公司 | Radio frequency identification antenna |
| CN108958063A (en) * | 2018-11-02 | 2018-12-07 | 常州普纳电子科技有限公司 | A kind of intelligent household management system |
| CN109149094A (en) * | 2018-08-24 | 2019-01-04 | 深圳大学 | dipole antenna array |
| CN110503177A (en) * | 2019-09-26 | 2019-11-26 | 上扬无线射频科技扬州有限公司 | A kind of RFID label tag adapting to micro-wave oven heating cycle |
| CN111224232A (en) * | 2018-11-23 | 2020-06-02 | 比亚迪股份有限公司 | Dual-band omnidirectional antenna and train |
| CN112766447A (en) * | 2021-01-13 | 2021-05-07 | 江苏科睿坦电子科技有限公司 | Ultrahigh frequency RFID (radio frequency identification) tag with variable performance |
| CN114261603A (en) * | 2021-10-28 | 2022-04-01 | 浙江菜鸟供应链管理有限公司 | Radio frequency packaging box and processing method thereof |
| CN114261604A (en) * | 2021-10-28 | 2022-04-01 | 浙江菜鸟供应链管理有限公司 | Radio frequency packing box |
-
2011
- 2011-09-06 CN CN 201120330992 patent/CN202205889U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904023A (en) * | 2012-10-23 | 2013-01-30 | 北京邮电大学 | Two-sided subminiature RFID (radio frequency identification) tag antenna |
| CN105490013A (en) * | 2015-12-31 | 2016-04-13 | 上海炘璞电子科技有限公司 | Radio frequency identification antenna |
| CN109149094A (en) * | 2018-08-24 | 2019-01-04 | 深圳大学 | dipole antenna array |
| CN109149094B (en) * | 2018-08-24 | 2021-02-26 | 深圳大学 | Dipole antenna array |
| CN108958063A (en) * | 2018-11-02 | 2018-12-07 | 常州普纳电子科技有限公司 | A kind of intelligent household management system |
| CN108958063B (en) * | 2018-11-02 | 2019-01-29 | 常州普纳电子科技有限公司 | A kind of intelligent household management system |
| CN111224232A (en) * | 2018-11-23 | 2020-06-02 | 比亚迪股份有限公司 | Dual-band omnidirectional antenna and train |
| CN110503177A (en) * | 2019-09-26 | 2019-11-26 | 上扬无线射频科技扬州有限公司 | A kind of RFID label tag adapting to micro-wave oven heating cycle |
| CN112766447A (en) * | 2021-01-13 | 2021-05-07 | 江苏科睿坦电子科技有限公司 | Ultrahigh frequency RFID (radio frequency identification) tag with variable performance |
| CN112766447B (en) * | 2021-01-13 | 2021-09-24 | 江苏科睿坦电子科技有限公司 | Ultrahigh frequency RFID (radio frequency identification) tag with variable performance |
| CN114261603A (en) * | 2021-10-28 | 2022-04-01 | 浙江菜鸟供应链管理有限公司 | Radio frequency packaging box and processing method thereof |
| CN114261604A (en) * | 2021-10-28 | 2022-04-01 | 浙江菜鸟供应链管理有限公司 | Radio frequency packing box |
| CN114261604B (en) * | 2021-10-28 | 2023-08-22 | 浙江菜鸟供应链管理有限公司 | Radio frequency packing box |
| CN114261603B (en) * | 2021-10-28 | 2023-08-25 | 浙江菜鸟供应链管理有限公司 | Radio frequency packing box and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202205889U (en) | Microwave frequency band RFID (Radio Frequency Identification Device) tag antenna applied to nonmetal surface | |
| CN102005645B (en) | Miniaturized dual-frequency antenna | |
| CN202134653U (en) | Miniaturized wideband antenna | |
| US7505001B2 (en) | Virtual short circuit for providing reference signal in RFID tag | |
| CN101593866B (en) | Dielectric resonance UHF RFID label antenna provided with T-shaped matching network | |
| CN102110872A (en) | Radio frequency identification tag antenna applicable to non-metallic surface | |
| CN105514599A (en) | Ultrahigh frequency electronic tag antenna | |
| CN101355195A (en) | UHF RF dual-frequency-recognizing metal-resistance label antenna | |
| CN101771190B (en) | RFID tag antenna for metal surface | |
| CN102437421A (en) | Anti-metal tag antenna applied in RFID (radio frequency identification device) system on UHF (ultra high frequency) band | |
| CN201918504U (en) | Miniaturized dual-frequency antenna | |
| EP2845264A1 (en) | Discontinuous loop antennas suitable for radio-frequency identification (rfid) tags, and related components, systems, and methods | |
| CN102110871A (en) | Radio frequency identification tag antenna suitable for metal surface | |
| CN101789543B (en) | Multi-system and multi-band frequency RFID (Radio Frequency Identification) antenna | |
| CN104733846A (en) | Small UHF meander-line dipole anti-metallic RFID label antenna | |
| EP2323075B1 (en) | RFID tag antenna using double-open ends coupler structure | |
| Li et al. | Eye-shaped segmented reader antenna for near-field UHF RFID applications | |
| CN201303048Y (en) | Microwave range dielectric resonator RFID tag antenna capable of working on metal surfaces | |
| CN107369921A (en) | Nearly far-field R FID read write lines switchable antenna and its design method | |
| CN201191647Y (en) | RFID electronic label antenna having dual T type slot radiation element | |
| CN103022649A (en) | Impedance-adjustable tag antenna applied to UHF (ultrahigh frequency) RFID (radio-frequency identification) system | |
| CN205543212U (en) | Two S type near fields read write line antenna of UHF frequency channel RFID system is applied to to a section | |
| CN201985241U (en) | Radio frequency identification (RFID) tag antenna applicable to metal surfaces | |
| CN101527391A (en) | Plate-shaped feeding air-dielectric patch antenna | |
| US8872704B2 (en) | Integrated antenna and method for operating integrated antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20180906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |