CN107545298B - A kind of flexibility anti-metal tag - Google Patents
A kind of flexibility anti-metal tag Download PDFInfo
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- CN107545298B CN107545298B CN201710686391.0A CN201710686391A CN107545298B CN 107545298 B CN107545298 B CN 107545298B CN 201710686391 A CN201710686391 A CN 201710686391A CN 107545298 B CN107545298 B CN 107545298B
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Abstract
The invention discloses a kind of flexible anti-metal tags, including medium substrate layer (2), the radiation patch layer (1) being fixed on above medium substrate layer (2) and the floor layer (12) being fixed below medium substrate layer (2)；The radiation patch layer (1) includes radiation areas (3) and feeder section, and the feeder section includes chip (4), the first microstrip line (5) and the second microstrip line (6)；One end of first microstrip line (5) and one end of the second microstrip line (6) are connected to the both ends of chip (4)；First microstrip line (5) other end and the other end of the second microstrip line (6) link together, and the common end as two microstrip lines is connected to radiation areas (3), and feeder section and radiation areas (3) is made to form an entirety.Feeder section and radiation areas are combined into an entirety by the present invention, are formd a coplanar whole special microstrip antenna, are reduced label sizes, reduce label cost.
Description
Technical field
The present invention relates to wireless communication fields, and in particular to a kind of flexibility anti-metal tag.
Background technique
In the application of various labels, many times need to be identified metal object, such as automobile, steel cylinder, packaging
Case, weaponry etc.；And common ultrahigh-frequency tag, when being placed on metal surface, the reading distance of label can shorten rapidly,
It cannot even be read.
When common ultrahigh-frequency tag is affixed on metal surface, the principal element for causing tag performance to be deteriorated is metal boundary item
Part makes the back wave of reader request signal and the opposite in phase of incidence wave, is cancelled so as to cause energy, and label is difficult to obtain
Enough to energy activated label chip.When incidence wave is perpendicular to metal surface, since back wave is just differed with incidence wave
180 °, electric field component is distributed in metal surface in standing wave, in other words, when label is placed directly against metal surface, can be obtained
Energy it is almost nil, and enter place apart from metal surface when be placed on, the energy that can be obtained is the largest；Therefore, when label day
When line is directly affixed on metal surface, due to the radiation efficiency deep fades of the influence label antenna of boundary condition.
Other than label antenna radiation efficiency is affected, the impedance matching of label antenna can also be deteriorated, so as to cause day
The power transmission factor of line and chip reduces；On the one hand the variation of antenna impedance is the reduction due to antenna radiation resistance, another
Aspect is to generate the influence of loading to antenna due to metal surface；The reduction of the radiation efficiency as caused by metal boundary condition
It can be overcome using absorbing material in kind degree, but metal surface can not then eliminate the loading of antenna influence.
For the situation, some interior external producers specially devise some anti-metal tags that can be used for metal surface, this
A little labels often use microstrip antenna, this just needs to carry out medium substrate punching ground connection, or as microstrip antenna of opening a way
Generally extend at rear, that there is volumes is big, performance is poor, and processing is complicated, disadvantage at high cost, it is difficult to meet the need of practical application
It wants.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of flexible anti-metal tags, by feeder section
It is combined into an entirety with radiation areas, a coplanar whole special microstrip antenna is formd, reduces label sizes, is reduced
Label cost.
The purpose of the present invention is achieved through the following technical solutions: a kind of flexibility anti-metal tag, including medium base
Plate layer, the radiation patch layer being fixed on above medium substrate layer and the floor layer being fixed below medium substrate layer；
The radiation patch layer includes radiation areas and feeder section, and the feeder section includes chip, the first microstrip line
With the second microstrip line；The left end of chip connects one end of the first microstrip line, and the right end of chip connects one end of the second microstrip line；The
The common end that the other end of the one microstrip line other end and the second microstrip line is connected together as two microstrip lines is connected to radiation
Region makes feeder section and radiation areas form an entirety.
The beneficial effects of the present invention are: the feeder section of antenna and radiation areas are combined into an entirety, shape by the present invention
It is not needed without carrying out punching ground connection to medium substrate as some open circuits at a coplanar whole special microstrip antenna yet
Microstrip antenna is the same to be extended at rear, is reduced the overall dimensions of label, is reduced the difficulty of processing and processing cost of label.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flexible anti-metal tag；
Fig. 2 is the structural schematic diagram of radiation patch layer；
Fig. 3 is the structural schematic diagram of the first microstrip line；
Fig. 4 is radiation patch layer current flow diagram；
In figure, 1- radiation patch layer, 2- medium substrate layer, the radiation areas 3-, 4- chip, the first microstrip line of 5-, 6- second
Microstrip line, the first gap 7-, the second gap 8-, 9- third gap, 10-L shape part, 11- rectangle part, 12- floor layer.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Fig. 1 ~ 3, a kind of flexibility anti-metal tag, including medium substrate layer 2, it is fixed on the top of medium substrate layer 2
Radiation patch layer 1 and be fixed on the floor layer 12 of the lower section of medium substrate layer 2；
The radiation patch layer 1 includes radiation areas 3 and feeder section, and the feeder section includes chip 4, the first micro-strip
Line 5 and the second microstrip line 6；The left end of chip 4 connects one end of the first microstrip line 5, and the right end of chip 4 connects the second microstrip line 6
One end；The other end of first microstrip line, 5 other end and the second microstrip line 6 is connected together as the common end of two microstrip lines
Radiation areas 3 are connected to, feeder section and radiation areas 3 is made to form an entirety.
In embodiments herein, the whole radiation patch layer 1 is in rectangle；The lower boundary and radiation area of feeder section
The lower boundary in domain 3 is on same straight line, and the equal irradiated area 3 in its excess-three boundary of feeder section is surrounded；Described first
Microstrip line 5 includes L shape part 10 and rectangle part 11, and the line width of rectangle part 11 is greater than the line width of L shape part；L shape part 10
Short side connect with chip 4, the long side of L shape part 10 connect and is mutually perpendicular to one end of rectangle part 11, rectangle part 11
The other end connect with the second microstrip line 6.Second microstrip line 6 is L shaped microstrip line, the long side and chip 4 of the second microstrip line 6
Connection, the short side of the second microstrip line 6 are connect with the first microstrip line 5.The short side of L-type part 10 is following in first microstrip line 5
The lower boundary on boundary, the long side lower boundary of the second microstrip line 6 and radiation areas 3 is on same straight line.In this embodiment,
The first gap 7 is provided between first microstrip line 5 and radiation areas 3；It is provided between second microstrip line 6 and radiation areas
Second gap 8；Third gap 9 is provided between first microstrip line 5 and the second microstrip line 6；Wherein first gap 7 is L
Shape gap, second gap 8 and third gap 9 are rectangular aperture；The model Monza R6 that chip 4 uses.
The radiation patch layer 1 is fixed on the top of medium substrate layer 2 by hot pressing mode；The floor layer 12 passes through heat
Pressure mode is fixed on the lower section of medium substrate layer 2.In embodiments herein, medium substrate layer 2 has multilayered structure, each layer
Structure heat pressure adhesive is shaped to an entirety, from bottom to up successively includes glaxin release paper, aluminium foil, PP film, single layer synthesis
Paper (substrate), PP film, single layer synthetic paper (substrate), aluminium foil and glaxin release paper；The radiation patch layer 1 and floor layer 12
For same metal layer and thickness it is identical, aluminium or copper can be used in metal material.
As shown in figure 4, be radiation patch layer surface current flow diagram, in embodiments herein, the first micro-strip
Line 5 is identical with the length of the second microstrip line 6；Two microstrip lines take into account feeder line and matched effect；First microstrip line 5 and second micro-
Radiation areas 3 are divided into two parts by the common end with line 6；Two parts can regard the first microstrip line 5 and the second microstrip line 6 as respectively
Oscillator arms；Since feed is in centre feed, current direction is identical on oscillator, therefore current direction whole on radiation patch layer
Unanimously (as can be seen from Figure 4 the current direction of radiation patch layer 1 is HJEF)；Again since mirror image of the floor layer 12 to electric current is made
With electric current and 1 constant amplitude reverse phase of radiation patch layer on floor layer 12 meet the basic radiation theory of microstrip antenna, such mode
The coplanar feed of microstrip antenna is realized, the requirement of tradition punching ground connection is avoided, does not also need as some open circuit microstrip antennas one
Sample extends at rear, reduces the overall dimensions of label, reduces difficulty of processing and cost.
It, will be in the upper and lower surface hot pressing of medium substrate layer 2 in specific process meanwhile according to the structure of the application
After the metal layer of same thickness, it is only necessary to etch the first gap 7, the second gap 8 and the third gap on the metal of upper layer
9, after forming the first microstrip line 5 and the second microstrip line 6, chip 4 and two microstrip lines are subjected to bonding, therefore further decreased
Difficulty of processing and processing cost.
In conclusion the feeder section of antenna and radiation areas are combined into an entirety by the present invention, one is formd altogether
The special microstrip antenna of face entirety is not needed without carrying out punching ground connection to medium substrate as some open circuit microstrip antennas one yet
Sample extends at rear, reduces the overall dimensions of label, reduces the difficulty of processing and processing cost of label.
It should be noted that above-described embodiment is only the present invention preferably implementation, the description thereof is more specific and detailed,
But it cannot be understood as limitations on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made, these are obviously replaced
The form of changing all belongs to the scope of protection of the present invention.
Claims (6)
1. a kind of flexibility anti-metal tag, it is characterised in that: including medium substrate layer (2), be fixed on above medium substrate layer (2)
Radiation patch layer (1) and the floor layer (12) that is fixed below medium substrate layer (2)；
The radiation patch layer (1) includes radiation areas (3) and feeder section, and the feeder section includes chip (4), first micro-
Band line (5) and the second microstrip line (6)；One end of the left end connection the first microstrip line (5) of chip (4), the right end connection of chip (4)
One end of second microstrip line (6)；First microstrip line (5) other end and the other end of the second microstrip line (6) are connected together as
The common end of two microstrip lines is connected to radiation areas (3), and feeder section and radiation areas (3) is made to form an entirety；
First microstrip line (5) includes L shape part (10) and rectangle part (11)；The short side and chip of L shape part (10)
(4) connect, the long side of L shape part (10) connect and is mutually perpendicular to one end of rectangle part (11), rectangle part (11) it is another
One end is connect with the second microstrip line (6)；
Second microstrip line (6) is L shaped microstrip line, and the long side of the second microstrip line (6) is connect with chip (4), the second microstrip line
(6) short side is connect with the first microstrip line (5)；
The long side lower boundary and spoke of the short side lower boundary of first microstrip line (5) the L-type part (10), the second microstrip line (6)
The lower boundary for penetrating region (3) is on same straight line；
The first gap (7) are provided between first microstrip line (5) and radiation areas (3)；Second microstrip line (6) and radiation area
The second gap (8) are provided between domain；Third gap (9) are provided between first microstrip line (5) and the second microstrip line (6).
2. a kind of flexible anti-metal tag according to claim 1, it is characterised in that: the radiation patch layer (1) is whole
In rectangle.
3. a kind of flexible anti-metal tag according to claim 1, it is characterised in that: first gap (7) is L shape
Gap, second gap (8) and third gap (9) are rectangular aperture.
4. a kind of flexible anti-metal tag according to claim 1, it is characterised in that: the radiation patch layer (1) passes through
Hot pressing mode is fixed on the top of medium substrate layer (2).
5. a kind of flexible anti-metal tag according to claim 1, it is characterised in that: the floor layer (12) passes through hot pressing
Mode is fixed on the lower section of medium substrate layer (2).
6. a kind of flexible anti-metal tag according to claim 1, it is characterised in that: the radiation patch layer (1) and ground
Plate layer (12) is same metal layer and thickness is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686391.0A CN107545298B (en) | 2017-08-11 | 2017-08-11 | A kind of flexibility anti-metal tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686391.0A CN107545298B (en) | 2017-08-11 | 2017-08-11 | A kind of flexibility anti-metal tag |
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| Publication Number | Publication Date |
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| CN107545298A CN107545298A (en) | 2018-01-05 |
| CN107545298B true CN107545298B (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710686391.0A Active CN107545298B (en) | 2017-08-11 | 2017-08-11 | A kind of flexibility anti-metal tag |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108808263A (en) * | 2018-06-05 | 2018-11-13 | 成都赛康宇通科技有限公司 | A kind of suction wave layer and preparation process for antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567482A (en) * | 2008-04-25 | 2009-10-28 | 中兴通讯股份有限公司 | Anti-human body miniaturized electronic label and producing method thereof |
| CN102437421A (en) * | 2011-09-07 | 2012-05-02 | 北京邮电大学 | Anti-metal tag antenna applied in RFID (radio frequency identification device) system on UHF (ultra high frequency) band |
| CN106845604A (en) * | 2016-11-22 | 2017-06-13 | 杭州电子科技大学 | A kind of flexible UHF RFID anti-metal tags |
| CN106981722A (en) * | 2017-05-10 | 2017-07-25 | 江苏明联电子科技有限公司 | A kind of flexible anti-metal RFID label antenna |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101330363B1 (en) * | 2010-09-17 | 2013-11-15 | 한국전자통신연구원 | Directional rfid label tag for measuring postal matter delivery service |
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2017
- 2017-08-11 CN CN201710686391.0A patent/CN107545298B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567482A (en) * | 2008-04-25 | 2009-10-28 | 中兴通讯股份有限公司 | Anti-human body miniaturized electronic label and producing method thereof |
| CN102437421A (en) * | 2011-09-07 | 2012-05-02 | 北京邮电大学 | Anti-metal tag antenna applied in RFID (radio frequency identification device) system on UHF (ultra high frequency) band |
| CN106845604A (en) * | 2016-11-22 | 2017-06-13 | 杭州电子科技大学 | A kind of flexible UHF RFID anti-metal tags |
| CN106981722A (en) * | 2017-05-10 | 2017-07-25 | 江苏明联电子科技有限公司 | A kind of flexible anti-metal RFID label antenna |
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| CN107545298A (en) | 2018-01-05 |
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