CN104182784A - Metro coin for radio frequency identification - Google Patents
Metro coin for radio frequency identification Download PDFInfo
- Publication number
- CN104182784A CN104182784A CN201310194708.0A CN201310194708A CN104182784A CN 104182784 A CN104182784 A CN 104182784A CN 201310194708 A CN201310194708 A CN 201310194708A CN 104182784 A CN104182784 A CN 104182784A
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- Prior art keywords
- radio frequency
- radio
- coin
- frequency
- parallel plate
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- 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.)
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Abstract
The invention provides a metro coin for radio frequency identification. The metro coin comprises a radio frequency chip, a PCB substrate and radio frequency antenna coils arranged on the PCB substrate. The metro coin further comprises an impedance matching capacitor formed by upper and lower two parallel polar plates. The radio frequency antenna coils are arranged at the two sides of the metro coin and are in electrical connection through via holes; the radio frequency chip is arranged on the same surface with the upper parallel polar plate; and the radio frequency chip has two pins, one pin being connected with the upper parallel polar plate, and the other pin being connected with the lower two parallel polar plate through the via holes.
Description
Technical field
The present invention relates to a kind of radio frequency and set with anti-metal electronic tag, relate in particular to a kind of ground iron coin setting for radio frequency.
Background technology
For realizing no reflection events transmission or the maximum power transfer of radiofrequency signal, require radio system impedance matching.The mode that current radio frequency sets the common employing external capacitor of land used iron coin realizes impedance matching, because damaging, external capacitor is easy to cause ground iron coin to lose efficacy, stability and the serviceable life of radio-frequency recognition system are had a greatly reduced quality, also improved to a certain extent product manufacturing cost and use cost.
Summary of the invention
The object of the invention is to overcome existing radio-frequency (RF) identification land used iron coin and adopt external capacitor to carry out impedance matching to cause system stability poor, serviceable life is short, the shortcoming that cost is high.
For realizing above object, technical scheme of the present invention is as follows:
A kind of ground iron coin for radio-frequency (RF) identification is provided, comprise radio frequency chip, PCB base material and be positioned at the radio-frequency antenna coil on PCB base material, also comprise the impedance matching electric capacity being formed by upper and lower two-layer parallel plate electrode, described radio-frequency antenna coil is positioned at the two sides of ground iron coin and is electrically connected by via hole, described radio frequency chip and upper strata parallel plate electrode are positioned at the same face, radio frequency chip has two pins, one of them pin connects upper strata parallel plate electrode, and another pin connects lower floor's parallel plate electrode by via hole.
Described radio frequency chip frequency is 13.56MHz.
Described upper and lower two-layer parallel plate electrode is made of copper.
The present invention combines by the capacity plate antenna forming by radio-frequency antenna coil with by the upper and lower two-layer parallel plate electrode of ground iron coin itself, utilize this capacity plate antenna to realize impedance matching, this capacity plate antenna can not damage, and has greatly improved stability and the serviceable life of radio system; In addition, due to without external capacitor, manufacturing cost and maintenance cost have been reduced to a certain extent.
Brief description of the drawings
Fig. 1 is the present invention ground iron coin front schematic view.
Fig. 2 is the present invention ground iron coin reverse side schematic diagram.
In figure: 1, radio-frequency antenna coil, 2, parallel plate electrode, 3, via hole, 4, fixed orifice, 5, radio frequency chip, 6, PCB base material.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
High frequency antenna coil 1 be positioned at ground the positive and negative two sides of iron coin PCB base material 6 on and by multiple via holes 3 by high frequency antenna coil 1 conducting from electric on two sides, upper and lower two-layer copper parallel plate electrode 2 forms impedance matching capacity plate antenna, radio frequency chip 5 is positioned at the same face with upper strata parallel plate electrode 2, radio frequency chip 5 has two pins, one of them pin connects upper strata parallel plate electrode 2, another pin connects lower floor's parallel plate electrode 2 by via hole 3, by fixed orifice 4, high frequency antenna coil 1, upper and lower two-layer copper parallel plate electrode 2 and radio frequency chip 5 etc. is injected into a whole.
Claims (3)
1. the ground iron coin for radio-frequency (RF) identification, comprise radio frequency chip, PCB base material and be positioned at the radio-frequency antenna coil on PCB base material, it is characterized in that: also comprise the impedance matching electric capacity being formed by upper and lower two-layer parallel plate electrode, described radio-frequency antenna coil is positioned at the two sides of ground iron coin and is electrically connected by via hole, described radio frequency chip and upper strata parallel plate electrode are positioned at the same face, radio frequency chip has two pins, one of them pin connects upper strata parallel plate electrode, and another pin connects lower floor's parallel plate electrode by via hole.
2. the ground iron coin for radio-frequency (RF) identification as claimed in claim 1, is characterized in that: described radio frequency chip frequency is 13.56MHz.
3. the ground iron coin for radio-frequency (RF) identification as claimed in claim 1, is characterized in that: described upper and lower two-layer parallel plate electrode is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310194708.0A CN104182784A (en) | 2013-05-23 | 2013-05-23 | Metro coin for radio frequency identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310194708.0A CN104182784A (en) | 2013-05-23 | 2013-05-23 | Metro coin for radio frequency identification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104182784A true CN104182784A (en) | 2014-12-03 |
Family
ID=51963809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310194708.0A Pending CN104182784A (en) | 2013-05-23 | 2013-05-23 | Metro coin for radio frequency identification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104182784A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335776A (en) * | 2015-09-25 | 2016-02-17 | 东莞市锐祥智能卡科技有限公司 | Method for making metro coins |
| CN105740938A (en) * | 2016-02-01 | 2016-07-06 | 深圳市远望谷信息技术股份有限公司 | Antenna applicable to electronic tag chips using different protocols or having different model numbers and electronic tag |
| CN106326970A (en) * | 2016-08-10 | 2017-01-11 | 深圳西龙同辉技术股份有限公司 | Transportation chip-type one-way ticket and circuit board |
-
2013
- 2013-05-23 CN CN201310194708.0A patent/CN104182784A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335776A (en) * | 2015-09-25 | 2016-02-17 | 东莞市锐祥智能卡科技有限公司 | Method for making metro coins |
| CN105740938A (en) * | 2016-02-01 | 2016-07-06 | 深圳市远望谷信息技术股份有限公司 | Antenna applicable to electronic tag chips using different protocols or having different model numbers and electronic tag |
| CN105740938B (en) * | 2016-02-01 | 2018-09-25 | 深圳市远望谷信息技术股份有限公司 | Suitable for different agreement or the antenna and electronic tag of model electronic label chip |
| CN106326970A (en) * | 2016-08-10 | 2017-01-11 | 深圳西龙同辉技术股份有限公司 | Transportation chip-type one-way ticket and circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |