CN108832286A - A kind of bending label antenna worn applied to human body - Google Patents
A kind of bending label antenna worn applied to human body Download PDFInfo
- Publication number
- CN108832286A CN108832286A CN201810627878.6A CN201810627878A CN108832286A CN 108832286 A CN108832286 A CN 108832286A CN 201810627878 A CN201810627878 A CN 201810627878A CN 108832286 A CN108832286 A CN 108832286A
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- China
- Prior art keywords
- patch
- radiation patch
- human body
- antenna
- couple feed
- Prior art date
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- Pending
Links
- 238000005452 bending Methods 0.000 title claims abstract description 19
- 230000005855 radiation Effects 0.000 claims abstract description 58
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 210000000707 wrist Anatomy 0.000 description 11
- 238000004088 simulation Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
Landscapes
- Details Of Aerials (AREA)
Abstract
The invention proposes a kind of bending label antennas worn applied to human body, including：Bottom plate, primary radiation patch and couple feed patch, wherein, the primary radiation patch includes the first radiation patch and the second radiation patch, the outer end of first radiation patch and the second radiation patch is connected by short-circuit piece with the bottom plate, a pair of symmetrical couple feed patch is installed in first radiation patch and the second radiation patch, RFID label chip is installed between the couple feed patch, by the RFID label chip to couple feed patch symmetric feeds, energy is transmitted by capacitive coupling between the couple feed patch and the primary radiation patch.Present invention performance under annularity still keeps stablizing, can the complex environments such as human body blood influence, unique contour structures application prospect it is good.
Description
Technical field
The present invention relates to technology for radio frequency field, in particular to a kind of bending label antenna worn applied to human body.
Background technique
With the development of the personal electric communications field, wearable antenna has also obtained more and more researchs.It is led in RFID
Domain, wearable RFID tag also have very big development prospect.It can make antenna when except when RFID label antenna is close to metal
Outside characteristic changing, for general RFID label antenna close to human body, also making impedance operator, great changes will take place,
It is greatly shortened so that reading distance.
Summary of the invention
The purpose of the present invention aims to solve at least one of described technological deficiency.
For this purpose, it is an object of the invention to propose a kind of bending label antenna worn applied to human body.
To achieve the goals above, the embodiment of the present invention provides a kind of bending label antenna worn applied to human body,
Bent is worn on human body, including：Bottom plate, primary radiation patch and couple feed patch, wherein the primary radiation patch packet
Include the first radiation patch and the second radiation patch, the outer end of first radiation patch and the second radiation patch is by short-circuit piece and institute
It states bottom plate to be connected, a pair of symmetrical couple feed patch is installed in first radiation patch and the second radiation patch, in institute
It states and RFID label chip is installed between couple feed patch, couple feed patch is symmetrically presented by the RFID label chip
Electricity transmits energy by capacitive coupling between the couple feed patch and the primary radiation patch.
Further, 1mm is spaced between first radiation patch and the second radiation patch.
Further, it is supported between first radiation patch and the second radiation patch and bottom plate using froth bed.
Further, at a distance of 1mm between symmetrical couple feed patch.
Further, FR4 dielectric-slab is placed between the primary radiation patch and the couple feed patch.
Further, by adjusting the resonance frequency of the length adjustment antenna of the primary radiation patch, by adjusting the master
The width of radiation patch and the length of dielectric-slab adjust the input impedance of antenna.
The bending label antenna according to an embodiment of the present invention worn applied to human body, being can RFID of the band in wrist
Label antenna is studied by the planar structure to antenna, then to when antenna is worn in wrist the case where emulate
Analysis, and measure.The bending label antenna for being applied to human body and wearing of the invention, has the advantages that：Under annularity
Performance still keeps stablizing, can the complex environments such as human body blood influence, unique contour structures application prospect it is good.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, wherein：
Fig. 1 a and Fig. 1 b are the structure chart for being applied to the bending label antenna that human body is worn according to the embodiment of the present invention；
Fig. 2 is the model configuration figure according to deformation occurs aft antenna of the embodiment of the present invention；
Fig. 3 is the simulation result diagram according to the return loss of the embodiment of the present invention；
Fig. 4 is the antenna radiation pattern simulation result schematic diagram according to the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The present invention proposes a kind of bending label antenna worn applied to human body, is that a kind of work is marked in the RFID of 915MHz
It signs chip and designs, the input impedance of this kind of chip is 42-j157 Ω.By adjustment parameter, antenna can be easy to and have
There is the chip of other input impedance value to match.
As illustrated in figs. 1A and ib, the bending label antenna for being applied to human body and wearing of the embodiment of the present invention, it is bent
It is worn on human body, including：Bottom plate, primary radiation patch and couple feed patch, wherein primary radiation patch includes symmetrical first
Radiation patch and the second radiation patch.Wherein, 1mm is spaced between the first radiation patch and the second radiation patch.First radiation patch
It is supported between piece and the second radiation patch and bottom plate using froth bed.The outer end of first radiation patch and the second radiation patch is by short
Road piece is connected with bottom plate, and a pair of symmetrical couple feed patch is installed in the first radiation patch and the second radiation patch.Main spoke
Penetrate placement FR4 dielectric-slab, er=4.4 between patch and couple feed patch.In one embodiment of the invention, symmetrical coupling
It closes between fed patch at a distance of 1mm.
RFID label chip is installed between couple feed patch, it is symmetrical to couple feed patch by RFID label chip
Feed, transmits energy by capacitive coupling between couple feed patch and primary radiation patch.
In the present invention, the resonance frequency of antenna is adjusted, by adjusting the length L1 of primary radiation patch by adjusting main spoke
The length Lc of the width W1 and dielectric-slab that penetrate patch adjust the input impedance of antenna.Table 1 is antenna ruler designed by the present invention
It is very little.
1 RFID label antenna dimensional parameters (unit of table：mm)
| L | L1 | Lc | W1 | W | H | H1 |
| 142 | 113 | 30 | 20 | 30 | 2 | 2.5 |
The emulation and measurement process of label antenna of the invention are illustrated below.
Because when antenna to be worn in wrist, the shape of antenna can have greatly changed, so removing when Antenna Design
To consider outside characteristic when antenna is in planar structure, it is also necessary to further consider that shape occurs when antenna is worn in wrist
Characteristic after change.In simulation study, situation after antenna is worn in wrist is simulated with ring structure shown in Fig. 2.It
Return loss of the line under different shape is as shown in Figure 3.It can be seen from the simulation result in Fig. 3 when deformation occurs for antenna,
Its impedance operator can be had an impact.It can be seen that still can be kept when antenna is bent to probably be in wrist shape
Preferable return loss characteristic.The simulation result of antenna radiation pattern is as shown in Figure 4.
In order to verify the working effect of design antenna, on the basis of emulation, produced according to the size gone out given in table 1
One deformable RFID antenna.The antenna uses foam double-side glue as the support between radiation patch and bottom plate, so that
Antenna can be bent, and then can be worn in wrist and measure.
The present invention is a kind of RFID label antenna for being adapted to hand and wearing application.It is found by simulation result, when designed
Antenna deformation occurs, in a ring when, certain influence can be generated to its impedance operator, but still be able to preferably with mark
The input resistant matching of chip is signed, that is, there is good return loss characteristic.The present invention is using CSL461 card reader to production
RFID label antenna has carried out experimental verification, sets the transmission power of card reader as 30dBm, the connected antenna gain of card reader is
6dBi, measurement obtain keeping planar structure (when not having deformation) when antenna, and maximum reading distance is 2.5m.When antenna is deformed into
Ring structure and band is in wrist, maximum read distance 1.5m.Measurement result shows day knot proposed by the invention
Structure can effectively reduce influence of the human body for antenna performance, and for antenna in the case where being worn in wrist, still having can be with
The reading distance of receiving, therefore can be applied in the RFID tag that hand is worn.In addition, due to RFID proposed by the invention
Antenna also has the structure of metal base plate, therefore also has the good characteristic that can be influenced to avoid metal surface.
The bending label antenna according to an embodiment of the present invention worn applied to human body, being can RFID of the band in wrist
Label antenna is studied by the planar structure to antenna, then to when antenna is worn in wrist the case where emulate
Analysis, and measure.The bending label antenna for being applied to human body and wearing of the invention, has the advantages that：Under annularity
Performance still keeps stablizing, can the complex environments such as human body blood influence, unique contour structures application prospect it is good.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.The scope of the present invention
It is extremely equally limited by appended claims.
Claims (6)
1. a kind of bending label antenna worn applied to human body, which is characterized in that bent is worn on human body, including：
Bottom plate, primary radiation patch and couple feed patch, wherein the primary radiation patch includes the first radiation patch and the second radiation patch
The outer end of piece, first radiation patch and the second radiation patch is connected by short-circuit piece with the bottom plate, in first radiation
A pair of symmetrical couple feed patch is installed on patch and the second radiation patch, is equipped between the couple feed patch
RFID label chip, by the RFID label chip to couple feed patch symmetric feeds, the couple feed patch and described
Energy is transmitted by capacitive coupling between primary radiation patch.
2. the bending label antenna worn as described in claim 1 applied to human body, which is characterized in that the first radiation patch
1mm is spaced between piece and the second radiation patch.
3. the bending label antenna worn as described in claim 1 applied to human body, which is characterized in that the first radiation patch
It is supported between piece and the second radiation patch and bottom plate using froth bed.
4. the bending label antenna worn as described in claim 1 applied to human body, which is characterized in that symmetrical couple feed
At a distance of 1mm between patch.
5. the bending label antenna worn as described in claim 1 applied to human body, which is characterized in that the primary radiation patch
FR4 dielectric-slab is placed between the couple feed patch.
6. the bending label antenna worn as claimed in claim 5 applied to human body, which is characterized in that by adjusting the master
The resonance frequency of the length adjustment antenna of radiation patch, by adjusting the width of the primary radiation patch and the length pair of dielectric-slab
The input impedance of antenna is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627878.6A CN108832286A (en) | 2018-06-19 | 2018-06-19 | A kind of bending label antenna worn applied to human body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810627878.6A CN108832286A (en) | 2018-06-19 | 2018-06-19 | A kind of bending label antenna worn applied to human body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108832286A true CN108832286A (en) | 2018-11-16 |
Family
ID=64141659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810627878.6A Pending CN108832286A (en) | 2018-06-19 | 2018-06-19 | A kind of bending label antenna worn applied to human body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108832286A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010160710A (en) * | 2009-01-09 | 2010-07-22 | Hitachi Ltd | Wearing band |
| CN101814648A (en) * | 2009-02-24 | 2010-08-25 | 富士通株式会社 | Antenna and equipment equipped with said antenna |
| CN202217302U (en) * | 2011-06-24 | 2012-05-09 | 深圳光启高等理工研究院 | Secure digital (SD) card and radio frequency identification system thereof |
| CN105260765A (en) * | 2015-10-29 | 2016-01-20 | 东华大学 | Care label-based UHF RFID tag based on screen printing |
| CN105701535A (en) * | 2016-01-22 | 2016-06-22 | 刘军 | Electronic tag wrist strap |
| CN107752245A (en) * | 2017-11-16 | 2018-03-06 | 深圳市中谷科技文化有限公司 | A kind of intelligent jewellery for strengthening communication signal |
-
2018
- 2018-06-19 CN CN201810627878.6A patent/CN108832286A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010160710A (en) * | 2009-01-09 | 2010-07-22 | Hitachi Ltd | Wearing band |
| CN101814648A (en) * | 2009-02-24 | 2010-08-25 | 富士通株式会社 | Antenna and equipment equipped with said antenna |
| CN202217302U (en) * | 2011-06-24 | 2012-05-09 | 深圳光启高等理工研究院 | Secure digital (SD) card and radio frequency identification system thereof |
| CN105260765A (en) * | 2015-10-29 | 2016-01-20 | 东华大学 | Care label-based UHF RFID tag based on screen printing |
| CN105701535A (en) * | 2016-01-22 | 2016-06-22 | 刘军 | Electronic tag wrist strap |
| CN107752245A (en) * | 2017-11-16 | 2018-03-06 | 深圳市中谷科技文化有限公司 | A kind of intelligent jewellery for strengthening communication signal |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |