CN107342461A - A kind of uhf band RFID arrowbands trap mask - Google Patents
A kind of uhf band RFID arrowbands trap mask Download PDFInfo
- Publication number
- CN107342461A CN107342461A CN201710538959.4A CN201710538959A CN107342461A CN 107342461 A CN107342461 A CN 107342461A CN 201710538959 A CN201710538959 A CN 201710538959A CN 107342461 A CN107342461 A CN 107342461A
- Authority
- CN
- China
- Prior art keywords
- split collar
- trap
- rfid
- mask
- arrowband
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of uhf band RFID arrowbands trap mask, and the arrowband trap mask is flexible media base material, and the symmetrical rectangle split collar composition being printed thereon for a pair.The resonant frequency of the rectangle split collar pair is in RFID passbands, the arrowband trap mask is pasted on into enterprising exercise in uhf band RFID label tag surface to use, when the rectangle split collar on mask is to resonance because the sense of current thereon is opposite with the sense of current in RFID label antenna, cancelled out each other from electromagnetic field caused by both in space, so as to form arrowband trap to the broadband RF ID labels of commercialization, arrowband label is become, so as to greatly improve the radio antijamming capability of RFID system.Trap frequency and notch bandwidth can be adjusted by the size and dimension for changing rectangle split collar, the present invention is applied to the RFID applications of the different frequency range of each country variant and regional defined.
Description
Technical field
The present invention relates to a kind of radio frequency trap structure, more particularly to a kind of uhf band RFID arrowbands trap mask.
Background technology
Radio frequency identification (RFID) technology is a kind of advanced wireless automatic identification technology, especially uhf band (860MHz~
RFID technique 960MHz), because it has the remarkable advantages such as radio wave transmission, high-speed transfer, multiple labels anti-collision, in personnel
It is used widely in each field such as management, entrance guard management, asset management, logistics transportation, track following.
Due to the difference that country variant and regional frequency spectrum resource distribute, every country distributes to RFID frequency range also each not phase
Together, in order to adapt to the application demand of country variant and area, the design of RFID label tag and manufacture often uses and international standard
The Wide-Band Design that ISO/IEC18000-6 is consistent, both communication band cover 860MHz~960MH frequency ranges.Broadband RFID label tag exists
Serious radio interference be present when disposing in application system, for example, the GSM frequency ranges of China, FM stereo band etc. all with
RFID frequency ranges exist overlapping, and the RFID system in this environment will be interfered significantly with by external wireless signal, so as to
RFID label tag recognition distance and read/write success rate is caused to be remarkably decreased.The present invention lifts uhf band to solve the problem
The anti-radio interference performance of RFID label tag proposes solution.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of uhf band RFID arrowbands trap mask,
Trap processing is carried out to electromagnetic wave in space, so as to be obviously improved the anti-radio interference ability of uhf band RFID label tag.
The present invention is achieved through the following technical solutions above-mentioned purpose：
RFID narrow-band filterings mask of the present invention, by flexible media base material, and pair being printed thereon for a pair
Claim the split collar composition of distribution.Its resonant frequency is set to exist the parameters such as each length of side, line width and spacing by adjusting the split collar
In RFID passbands.The described arrowband trap mask is covered in enterprising exercise in uhf band RFID label tag surface and used.The arrowband trap
When split collar on mask is to resonance, due to the sense of current on the sense of current thereon and the RFID label antenna being entirely covered
On the contrary, cancelled out each other from electromagnetic field caused by both in space, so as to forming arrowband trap in RFID label tag passband, make it
As arrowband label.
Preferably, the hosqt media of the narrow-band filtering mask can be the thin-film materials such as PVB, PET, PEN, more preferably
PET material.
Preferably, the split collar pair can be the structures, more preferably rectangle split collar knot such as straight-flanked ring, circular rings, ELC
Structure.
Preferably, the long edge lengths of the rectangle split collar are 1/8th to a quarter medium wavelength, more preferably
For 1/5th.
Preferably, the width edge length of the rectangle split collar is 1/1st to six/10th medium wavelength, more preferably
For 1/8th.
Brief description of the drawings
Fig. 1 is the transparent effect overlooking the structure diagram of RFID arrowbands trap mask of the present invention；
Relative position relation structure when Fig. 2 is trap mask application in RFID arrowbands of the present invention in its thickness direction is shown
It is intended to；
Fig. 3 is the structural parameters of the preferred embodiment of the present invention；
Fig. 4 is the knot that the preferred embodiment of the present invention applies targeted commercial uhf band RFID label tag Alien Z9654
Structure；
Fig. 5 is the reflectance factor simulation result of the preferred embodiment of the present invention；
Fig. 6 is the antenna pattern simulation result of the preferred embodiment of the present invention.
Embodiment
Below by the drawings and specific embodiments, the present invention will be described in detail.
As depicted in figs. 1 and 2, in the present invention RFID arrowbands trap mask that proposes by flexible media base material 102, with
And a pair of symmetrical split collars 101 being printed thereon form.Media substrate materials 102 are polyethylene terephthalate
Ester (PET) material, its dielectric coefficient are 3.9, loss angle tangent 0.003, and its length is half wavelength, and width is six points
One of wavelength, thickness 0.3mm.The material of symmetrical rectangular split collar 101 is copper, and its thickness is 0.17mm, and its physical size is joined
Counting setting is respectively：Long side is 1/5th wavelength, and broadside is 1/20th wavelength, and Opening length is 1/10th wavelength,
Line width is 1mm, and two split collar centre distances are quarter-wave.
As shown in Fig. 2 the RFID narrow-band filterings mask is covered commercial RFID label tag when using, the superiors are
Symmetrical rectangular split collar is to 101, and intermediate layer is RFID narrow-band filterings mask base material PET film 102, and bottom is commercialization
RFID label tag 103, it is Alien Z9654 labels used in this example.
Every structural parameters of the RFID narrow-band filterings mask are as shown in figure 3, RFID label tag Alien Z9654 structure
As shown in Figure 4.
As shown in figure 5, using commercial RFID label tag Alien Z9654 structures as standard, the RFID using FR4 as base material is marked
- the 10dB of label is with a width of 750MHz~1.14GHz, and its -10dB bandwidth after in the label surface covering embodiment of the present invention
Be changed into 840MHz~920MHz, to higher than 920MH frequency realize trap, therefore 920MHz~1.14GHz frequency ranges is outer
Portion wireless signal would become hard to produce label radio interference, significant increase systematic function.
As shown in fig. 6, being commercial label A lien Z9654 model its original orientation figures, and cover the embodiment of the present invention
The comparison of directional diagram afterwards, it is found that there was only -0.3dB damage after the label covering embodiment of the present invention to label gain
Lose, it is believed that almost do not lose.
Claims (9)
1. the invention discloses a kind of uhf band RFID arrowbands trap mask, the arrowband trap mask is by flexible media substrate
Material, and the symmetrical rectangle split collar composition being printed thereon for a pair.The resonant frequency of the rectangle split collar pair exists
In RFID passbands, the arrowband trap mask is pasted on enterprising exercise in uhf band RFID label tag surface and used, when the rectangle on mask
Due to the sense of current on the sense of current and RFID label antenna thereon on the contrary, from caused by both when split collar is to resonance
Electromagnetic field is cancelled out each other in space, so as to form arrowband trap to the broadband RF ID labels of commercialization, becomes arrowband label, from
And greatly improve the radio antijamming capability of RFID system.
2. the arrowband trap mask described in claim 1, it is characterised in that the arrowband trap mask includes：Flexible media base
Bottom film, symmetrical rectangular split collar printed circuit.
3. flexible media substrate film described in claim 2, it is characterised in that material can be the material films such as PET, PVC, PC.
4. flexible media substrate film described in claim 2, it is characterised in that used is PET film material, and its thickness is
0.3mm, dielectric constant 3.9.
5. the arrowband trap mask described in claim 1, it is characterised in that directly it is covered on RFID label tag surface during use, its
Geometric center position and the geometric center position of label overlap, and mask long side direction is consistent with label long side direction.
6. the symmetrical rectangular split collar printed circuit described in claim 1, it is characterised in that with arrowband trap mask central shaft pair
Claim, spacing, size, line width that the effect of its caused trap frequency and bandwidth can be by adjusting symmetrical rectangular split collar etc.
Parameter regulation, so as to realize the needs of suitable country variant and the protection of regional trap.
7. the symmetrical rectangular split collar printed circuit described in claim 2, it is characterised in that rectangle split collar distance center wheelbase
From being 48mm for 14mm, rectangle split collar periphery long side, broadside 40mm, interior girth side is 46mm, broadside 38mm.
8. the symmetrical rectangular split collar printed circuit described in claim 6, it is characterised in that resonant frequency is in the logical of RFID label tag
In band, 20dB suppression is formed in resonance frequency, therefore form trap effect.
9. the arrowband trap mask described in claim 1, it is characterised in that it realizes that the principle of trap is to be printed on film
Induced-current of the symmetrical rectangular split collar in resonance thereon with the sense of current on RFID label antenna line on the contrary, causing it
Radiation field and the radiation field of label antenna are cancelled out each other in space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538959.4A CN107342461A (en) | 2017-07-04 | 2017-07-04 | A kind of uhf band RFID arrowbands trap mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538959.4A CN107342461A (en) | 2017-07-04 | 2017-07-04 | A kind of uhf band RFID arrowbands trap mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107342461A true CN107342461A (en) | 2017-11-10 |
Family
ID=60218312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710538959.4A Pending CN107342461A (en) | 2017-07-04 | 2017-07-04 | A kind of uhf band RFID arrowbands trap mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107342461A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2043025A1 (en) * | 2007-09-28 | 2009-04-01 | Hitachi Ltd. | Radio frequency identification tag |
| JP2009147802A (en) * | 2007-12-17 | 2009-07-02 | Yagi Antenna Co Ltd | Antenna apparatus with ground plate |
| CN102112998A (en) * | 2008-08-01 | 2011-06-29 | 旭硝子株式会社 | RFID tag and manufacturing method therefor, impedance-adjusting method and resin sheet and manufacturing method therefor |
| CN102610916A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Small ultrawide band antenna with trapped wave characteristic |
| EP2518823A1 (en) * | 2011-04-27 | 2012-10-31 | Research In Motion Limited | Antenna assembly utilizing metal-dielectric resonant structures for specific absorption rate compliance |
| CN103633439A (en) * | 2013-11-15 | 2014-03-12 | 西南交通大学 | Ultrawide-band trap antenna |
| CN104319479A (en) * | 2014-10-16 | 2015-01-28 | 电子科技大学 | Miniaturized ultra-wideband MIMO antenna based on metamaterial |
| CN104425858A (en) * | 2013-09-10 | 2015-03-18 | 中兴通讯股份有限公司 | Filter |
| JP2016052219A (en) * | 2014-09-01 | 2016-04-11 | 株式会社東芝 | Vehicle drive unit and inverter controller |
| CN105680126A (en) * | 2015-12-30 | 2016-06-15 | 联想(北京)有限公司 | Filter adjustment method, filter and electronic equipment |
| CN205621840U (en) * | 2014-12-26 | 2016-10-05 | 株式会社村田制作所 | Antenna device |
-
2017
- 2017-07-04 CN CN201710538959.4A patent/CN107342461A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2043025A1 (en) * | 2007-09-28 | 2009-04-01 | Hitachi Ltd. | Radio frequency identification tag |
| JP2009147802A (en) * | 2007-12-17 | 2009-07-02 | Yagi Antenna Co Ltd | Antenna apparatus with ground plate |
| CN102112998A (en) * | 2008-08-01 | 2011-06-29 | 旭硝子株式会社 | RFID tag and manufacturing method therefor, impedance-adjusting method and resin sheet and manufacturing method therefor |
| EP2518823A1 (en) * | 2011-04-27 | 2012-10-31 | Research In Motion Limited | Antenna assembly utilizing metal-dielectric resonant structures for specific absorption rate compliance |
| CN102610916A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Small ultrawide band antenna with trapped wave characteristic |
| CN104425858A (en) * | 2013-09-10 | 2015-03-18 | 中兴通讯股份有限公司 | Filter |
| CN103633439A (en) * | 2013-11-15 | 2014-03-12 | 西南交通大学 | Ultrawide-band trap antenna |
| JP2016052219A (en) * | 2014-09-01 | 2016-04-11 | 株式会社東芝 | Vehicle drive unit and inverter controller |
| CN104319479A (en) * | 2014-10-16 | 2015-01-28 | 电子科技大学 | Miniaturized ultra-wideband MIMO antenna based on metamaterial |
| CN205621840U (en) * | 2014-12-26 | 2016-10-05 | 株式会社村田制作所 | Antenna device |
| CN105680126A (en) * | 2015-12-30 | 2016-06-15 | 联想(北京)有限公司 | Filter adjustment method, filter and electronic equipment |
Non-Patent Citations (1)
| Title |
|---|
| JAMES R. KELLY，ET AL: "Band-Notched UWB Antenna Incorporating a Microstrip Open-Loop Resonator", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
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Application publication date: 20171110 |