CN101567482A - Anti-human body miniaturized electronic label and producing method thereof - Google Patents
Anti-human body miniaturized electronic label and producing method thereof Download PDFInfo
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- CN101567482A CN101567482A CNA2008100892643A CN200810089264A CN101567482A CN 101567482 A CN101567482 A CN 101567482A CN A2008100892643 A CNA2008100892643 A CN A2008100892643A CN 200810089264 A CN200810089264 A CN 200810089264A CN 101567482 A CN101567482 A CN 101567482A
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Abstract
The invention discloses an anti-human body miniaturized electronic label and a producing method thereof. The electronic label comprises a label antenna, an antenna base plate and a chip, wherein the label antenna is a mixed-type antenna formed by combining a microstrip and a doublet, and the radiating surface and the grounding surface of the label antenna are printed on the antenna base plate by metal wires to be used for receiving and sending the signal of the electronic label; and the chip and the label antenna printed on the antenna base plate are bound together by a via hole to be used for identifying the electronic label. The technical scheme of the invention is particularly designed for the human body, has anti-human body absorption and remote identification, and can reduce the harm for the human body by electromagnetic waves when the human body wears the electronic label.
Description
Technical field
The present invention relates to electronic tag manufacturing field in the short-wave communication tedhnology field, relate in particular to a kind of anti-human body miniaturized label and manufacture method thereof.
Background technology
At present, gate inhibition's type systematic mostly requires the employee to wear the electronic tag that work attendance is used, if electronic tag is near human body the time, be subjected to the human influence, decreased performance is very big, just can not guarantee the operate as normal of electronic tag, will strengthen the emitted energy of electronic tag like this, can produce certain influence employee's health.So uhf electromagnetic wave has become the thing that people more and more pay close attention to the influence of human body.
The hyperfrequency frequency range is used to be worn on the electronic tag on the human body in the market, is generally the electronic tag that meets the international standard size that is packaged into card matter and (is of a size of: 86.5mm * 54mm).Wherein, being generally dipole antenna in the design of hyperfrequency band antenna, is metal and liquid and the bottleneck of the label design of hyperfrequency frequency range is exactly an attachment, and the reflex of metal and the absorption of liquid all can significantly reduce the operating distance of label.
Below we specify that tissue is in the electromagnetic property of 900MHz frequency range:
Relative dielectric constant is: 55
Conductivity is: 1.06S/m
In the formula: σ is a conductivity, and ω represents frequency, and ε represents dielectric constant, and drawing numerical value is loss tangent.
This value can not satisfy the condition as the good conductor of dielectric constant much larger than 1, can not satisfy the condition of the good medium of dielectric constant much smaller than 1 again, therefore, illustrate that human body can produce tangible absorption to the electromagnetic wave of 900MHz frequency range, caused the reading distance of electronic tag the time to shorten, may shorten to 1 meter and form gap from 8 meters of coverages near human body.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of anti-human body miniaturized electronic label and manufacture method thereof, and this label is specially at human design, and anti-absorption of human body can be discerned at a distance, can reduce the harm of electromagnetic wave to human body when human body is worn.
In order to address the above problem, the invention provides a kind of anti-human body miniaturized electronic label, comprise label antenna, antenna substrate and chip, described label antenna is the hybrid antenna that little band combines with dipole, the radiating surface of described label antenna and ground plane are printed on the antenna substrate by wire, are used for the transmitting-receiving of electronic tag signal; Described chip binds together by via hole with the label antenna that is printed on the antenna substrate, is used for the identification of electronic tag.
Preferably, little band portion of hybrid label antenna is two slots with complex admittance; The dipole of label antenna partly comprises the part that microband paste and via hole are connected with ground.
Preferably, the radiating surface of described antenna tag is to be formed by the limit slot between microband paste and the ground plate.
A kind of manufacture method of anti-human body miniaturized electronic label comprises: after determining the shape and size of antenna substrate, print little band combine with the dipole radiating surface and the ground plane of hybrid label antenna with wire respectively at the tow sides of described antenna substrate; After printing finishes, chip and label antenna are bound together by via hole.
Further, little band portion of described label antenna is two slots with complex admittance; The dipole of described label antenna partly comprises the part that microband paste and via hole are connected with ground.
Further, the radiating surface of described antenna tag is formed by the limit slot between microband paste and the ground plate.
Further, after having printed label antenna, described label antenna will connect chip must make feed port on same plane, and adds the pad of a copper sheet as welding chip at the via hole upper surface, realizes conplane balanced feeding.
Further, described label antenna is printed on the antenna substrate by wire, and described wire is a copper foil wire.
Beneficial effect of the present invention:
Electronic tag proposed by the invention and manufacture method thereof have solved human body influences tag performance when wearing problem, have reduced emitted energy accordingly, reduced the harm of electromagnetic wave, and size is little, applied range to human body, stable performance, easily batch machining is worn easy for installation.
Description of drawings
Fig. 1 is the structural representation of embodiment of the invention electronic tag;
Fig. 2-1 is the distribution map of embodiment of the invention microstrip antenna field;
Fig. 2-2 is the distribution map of embodiment of the invention microstrip antenna field;
Fig. 3 is an embodiment of the invention microstrip antenna structure schematic diagram;
Fig. 4 is the equivalent electric circuit of embodiment of the invention microstrip antenna;
Fig. 5 embodiment of the invention label antenna dipole part current delivery figure.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described further.
The object of the present invention is to provide a kind of little band and the anti-human body miniaturized electronic label that combines of distortion dipole, when near human body than the electronic tag of prior art near the higher power gain that has under the situation of human body.
In order to achieve the above object, as shown in Figure 1, structural representation for embodiment of the invention anti-human body miniaturized electronic label, a kind of anti-human body miniaturized electronic label, comprise: antenna substrate 1, label antenna 2 and chip 3, described label antenna are the hybrid antenna that little band combines with dipole, described label antenna 2 is printed on the antenna substrate 1 by wire, is used for the transmitting-receiving of electronic tag signal; Described chip binds together by via hole with the label antenna that is printed on the antenna substrate, is used for the identification of electronic tag.
The structure of label antenna of the present invention it is advantageous that:
The antenna of microstrip structure can be eliminated the influence of back attachment to antenna, and it self directional diagram influences little condition towards the radiating surface direction so satisfied electronic tag near human body the time;
Adopting the form of dipole antenna is in order effectively to make ground participate in radiation with antenna.The area radiation effectively that the ground of tradition microstrip antenna needs several wavelength so the present invention proposes this kind of label antenna, has improved radiation efficiency.
Shown in Fig. 2-1, distribution for the microstrip antenna field, 1 is radiant body among the figure, and 2 is ground, owing to be open circuit at the two ends of length direction, be in the current node state, as shown in phantom in FIG., this moment, electric field was cancelled each other in the ground normal direction, tangential stack, so the direction of vertical antenna structure is the greatest irradiation direction, shown in Fig. 2-2.
Because the reflex of metal pair microwave and liquid are to the absorption of microwave, make microstrip antenna demonstrate its significant advantage, the design of tradition microstrip antenna is that a single uneven distributing point is arranged, this distributing point need be worn the structural design of layer, this design is often gone up at planar inverted-F antenna (PIFA) and is used, label antenna at first of the present invention will connect chip must make feed port on same plane, be by adding a via hole, and add the pad (limit of via hole less can not effectively weld will at limit upper berth copper sheet as pad increase bonding area) of a copper sheet as welding chip at the via hole upper surface, be convenient to better chip and connect, realize conplane balanced feeding.
As shown in Figure 3, the present embodiment microband paste is of a size of 61mm*12mm, and the thickness of substrate is 2.5mm, much smaller than free space wavelength, this microband paste can be regarded one section microstrip transmission line of long 61mm, wide 12mm as, presents open circuit along 61mm limit end, thereby will form potential loop.The length that present embodiment is chosen is λ/4 substantially, so the other end is voltage node, the radiating surface of label antenna is mainly by forming along the wide limit slot of the long 12mm of 61mm between microband paste and the ground plate; The little band portion of antenna can be expressed as two slots with complex admittance at a distance of 61mm, and its equivalent electric circuit as shown in Figure 4.
Dielectric thickness also is clearly to Effect on Performance, and it has determined the bandwidth of antenna and the loss of medium to a certain extent, and the degree of opening of radiation field.When thickness h increases, cause the space wave radiation efficiency to reduce owing to TM0 mould surface wave power increases, and the radiation of space wave itself also increases with h, when h/ λ about 0.1, peak value will appear in efficient.
The dipole part: the radiating surface of label antenna also has the part that via hole is connected with ground of passing through of 36mm*14mm (can regulate size according to the thickness of different label shells herein) except the microband paste that 61mm*12mm is arranged.
Among the inventive embodiments label antenna dipole part current delivery figure shown in Figure 5, dotted arrow is a back side current direction, and solid arrow is represented the front current direction, can find out a secondary dipole antenna that is equivalent to feed in dashed region by figure.
Described antenna substrate can be FR-4 antenna substrate commonly used.
The size of described anti-human body miniaturized label can be 64mm * 30mm * 2.5mm.
The antenna substrate of electronic tag of the present invention can be selected the antenna substrate of different models, and the concrete size of electronic tag will be formulated according to concrete requirement.
A kind of manufacture method of anti-human body miniaturized electronic label comprises:
(1) shape and the size of earlier definite antenna substrate in the present embodiment, adopt the FR-4 antenna substrate;
(2) print the radiating surface and the ground plane of the hybrid label antenna that little band combines with dipole with copper foil wire at the positive and negative of antenna substrate;
The radiating surface of antenna (front of antenna substrate) is mainly by forming along the wide limit slot of the long 12mm of 61mm between the microband paste of 61mm*12mm and the ground plate.Microband paste is of a size of 61mm*12mm, and the thickness of antenna substrate is 2.5mm, and much smaller than free space wavelength, this microband paste can be regarded one section microstrip transmission line of long 61mm, wide 12mm as, presents open circuit along 61mm limit end, thereby will form potential loop.
Little band portion of label antenna is two slots with complex admittance at a distance of 61mm.
The dipole part (radiating surface of label antenna) of label antenna except comprising microband paste, also comprises the part that via hole is connected with ground of passing through of 36mm*14mm (can regulate size according to different label outer casing thickness herein).
(3) chip and label antenna are bound together.
Described label antenna will connect chip must make feed port on same plane, and the embodiment of the invention is by adding a via hole, and adds a copper sheet at the via pad place of upper surface, is convenient to better chip and connects, and realizes conplane balanced feeding.
Protection scope of the present invention not only comprises the foregoing description, at liquid or other electromagnetic wave is had on the attachment of absorption to use this electronic tag, all belongs to protection scope of the present invention.
Claims (8)
1, a kind of anti-human body miniaturized electronic label, comprise label antenna, antenna substrate and chip, it is characterized in that, described label antenna is the hybrid antenna that little band combines with dipole, the radiating surface of described label antenna and ground plane are printed on the antenna substrate by wire, are used for the transmitting-receiving of electronic tag signal; Described chip binds together by via hole with the label antenna that is printed on the antenna substrate, is used for the identification of electronic tag.
2, electronic tag as claimed in claim 1 is characterized in that: little band portion of hybrid label antenna is two slots with complex admittance; The dipole of label antenna partly comprises the part that microband paste and via hole are connected with ground.
3, electronic tag as claimed in claim 1 is characterized in that: the radiating surface of described antenna tag is to be formed by the limit slot between microband paste and the ground plate.
4, a kind of manufacture method of anti-human body miniaturized electronic label, it is characterized in that, after determining the shape and size of antenna substrate, print little band combine with the dipole radiating surface and the ground plane of hybrid label antenna with wire respectively at the tow sides of described antenna substrate; After printing finishes, chip and label antenna are bound together by via hole.
5, method as claimed in claim 4 is characterized in that: little band portion of described label antenna is two slots with complex admittance; The dipole of described label antenna partly comprises the part that microband paste and via hole are connected with ground.
6, method as claimed in claim 4 is characterized in that: the radiating surface of described antenna tag is formed by the limit slot between microband paste and the ground plate.
7, method as claimed in claim 4, it is characterized in that: after having printed label antenna, described label antenna will connect chip must make feed port on same plane, and adds the pad of a copper sheet as welding chip at the via hole upper surface, realizes conplane balanced feeding.
8, method as claimed in claim 4 is characterized in that: described label antenna is printed on the antenna substrate by wire, and described wire is a copper foil wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100892643A CN101567482A (en) | 2008-04-25 | 2008-04-25 | Anti-human body miniaturized electronic label and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100892643A CN101567482A (en) | 2008-04-25 | 2008-04-25 | Anti-human body miniaturized electronic label and producing method thereof |
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| Publication Number | Publication Date |
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| CN101567482A true CN101567482A (en) | 2009-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100892643A Pending CN101567482A (en) | 2008-04-25 | 2008-04-25 | Anti-human body miniaturized electronic label and producing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544719A (en) * | 2011-12-21 | 2012-07-04 | 上海邮政科学研究院 | 2.4 G microstrip antenna |
| CN103515710A (en) * | 2013-08-07 | 2014-01-15 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
| CN106228227A (en) * | 2016-07-21 | 2016-12-14 | 刘良骥 | A kind of personal management label of human body interference |
| CN107545298A (en) * | 2017-08-11 | 2018-01-05 | 电子科技大学 | A kind of flexible anti-metal tag |
| CN108761502A (en) * | 2018-08-31 | 2018-11-06 | 广东圣大电子有限公司 | A kind of multimode GNSS test receivers with precise phase center |
-
2008
- 2008-04-25 CN CNA2008100892643A patent/CN101567482A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 翁呈祥等: "毫米波微带偶极子天线", 《2007年全国微波毫米波会议论文集》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544719A (en) * | 2011-12-21 | 2012-07-04 | 上海邮政科学研究院 | 2.4 G microstrip antenna |
| CN102544719B (en) * | 2011-12-21 | 2014-08-06 | 上海邮政科学研究院 | 2.4 G microstrip antenna |
| CN103515710A (en) * | 2013-08-07 | 2014-01-15 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
| CN103515710B (en) * | 2013-08-07 | 2015-04-08 | 南京信息职业技术学院 | Dual-frequency-band slot antenna based on half-mode substrate integrated waveguide |
| CN106228227A (en) * | 2016-07-21 | 2016-12-14 | 刘良骥 | A kind of personal management label of human body interference |
| CN107545298A (en) * | 2017-08-11 | 2018-01-05 | 电子科技大学 | A kind of flexible anti-metal tag |
| CN107545298B (en) * | 2017-08-11 | 2019-11-26 | 电子科技大学 | A kind of flexibility anti-metal tag |
| CN108761502A (en) * | 2018-08-31 | 2018-11-06 | 广东圣大电子有限公司 | A kind of multimode GNSS test receivers with precise phase center |
| CN108761502B (en) * | 2018-08-31 | 2024-02-02 | 广东圣大电子有限公司 | Multimode GNSS test receiver with accurate phase center |
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Application publication date: 20091028 |