CN104282991A - Wire winding method for non-contact antenna of POS machine - Google Patents
Wire winding method for non-contact antenna of POS machine Download PDFInfo
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- CN104282991A CN104282991A CN201410498046.0A CN201410498046A CN104282991A CN 104282991 A CN104282991 A CN 104282991A CN 201410498046 A CN201410498046 A CN 201410498046A CN 104282991 A CN104282991 A CN 104282991A
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Abstract
The invention provides a wire winding method for a non-contact antenna of a POS machine. The wire winding method for the non-contact antenna of the POS machine comprises the steps that (1) according to a capacitance formula (please see the specification for the formula), the large the A obtained according to the formula is, the larger the C is, the space occupied for winding the antenna in a POS panel needs to be made small during antenna winding, and then the capacitance of the antenna is reduced; (2) according to the principle that the space occupied for winding the antenna in the POS panel needs to be small, front-side winding and back-side winding are conducted on two wires corresponding to the two signals Tx1 and Tx2 of the antenna; (3) during winding, the widths of the two wires are set to be 5 mm-8 mm, and the distance between the front side and the corresponding back side of the two adjacent wires is set to be 5 mm-7 mm, and the two wires do not overlap with each other at all. By the adoption of the wire winding method for the non-contact antenna of the POS machine, the inductance value of the antenna can be guaranteed, the capacitance is reduced to the maximum extent, and thus a circuit matched with the antenna is quite stable.
Description
Technical field
The present invention relates to technical field of communication equipment, particularly relate to that a kind of POS is non-connects antenna wire method.
Background technology
The non-function of swiping card that connects is for essential function at last POS, and how to realize the non-performance that connects preferably becomes vital proposition for Ge great POS manufacturer.The non-performance that connects depends on non-connection module, antenna surrounding environment and antenna itself.Connect antenna for non-, the winding mode in current industry is multifarious, and good winding mode can affect self capacitive reactance Cant, induction reactance Lant and the impedance Rant of antenna, thus determines Q value and the bandwidth of antenna.As shown in fig. 1, antenna can be equivalent to an electric capacity Cant, the series-parallel circuit of a resistance Rant and inductance L ant.
As shown in Figure 2, antenna-matching circuit in industry in non-connection module: from the circuit of Fig. 2, we can learn, electric capacity Cant can affect the resonance of circuit in circuit, if the value of Cant is too large, the value of Cp then can be too little, and Cp is non-connection module circuit parameter, too little to stable have unfavorable very greatly.
Summary of the invention
The technical problem to be solved in the present invention, is to provide that a kind of POS is non-connects antenna wire method, makes antenna-matching circuit more stable.
The present invention is achieved in that a kind of POS is non-and connects antenna wire method, comprises the steps:
Step 1, according to capacitance equation
from formula, obtain A larger, C is larger, then the space in POS flat board shared by antenna coiling will be made during coiled antenna little, thus reduces the capacitance of antenna itself; Wherein, C represents capacitance, ε
0represent the dielectric constant of free space, A represents that POS flat board does not have the area of winding space, and h represents that POS flat board does not have the spacing of winding space;
Step 2, want little principle according to the space in POS flat board shared by antenna coiling, two corresponding to two of antenna signal Tx1, Tx2 lines are carried out obverse and reverse coiling;
In step 3, winding process, the live width of two lines is arranged on 5 ~ 8mm, the line-spacing between adjacent two lines of obverse and reverse is arranged on 5 ~ 7mm; And two lines can not have any lap.
Further, the live width of described two lines is arranged on 7mm.
Tool of the present invention has the following advantages: while the inductance value Lant that the present invention can make guarantee antenna and impedance Rant own, realize capacitance Cant and minimize; Thus make antenna-matching circuit comparatively stable.
Accompanying drawing explanation
Fig. 1 is the existing non-equivalent electric circuit connecing antenna.
Fig. 2 is the non-structural representation connecing antenna and antenna-matching circuit combination.
Fig. 3 is the non-structural representation connecing antenna wire in one embodiment of the invention.
Embodiment
Refer to shown in Fig. 2 and Fig. 3, a kind of POS of the present invention is non-connects antenna wire method, comprises the steps:
Step 1, according to capacitance equation
from formula, obtain A larger, C is larger, then the space in POS flat board shared by antenna coiling will be made during coiled antenna little, thus reduces the capacitance of antenna itself; Wherein, C represents capacitance, ε
0represent the dielectric constant of free space, A represents that POS flat board does not have the area of winding space, and h represents that POS flat board does not have the spacing of winding space;
Step 2, want little principle according to the space in POS flat board shared by antenna coiling, two corresponding to two of antenna signal Tx1, Tx2 lines are carried out front (TOP layer) and reverse side (BOTTOM layer) coiling;
In step 3, winding process, the live width of two lines is arranged on 5 ~ 8mm, the line-spacing between front (TOP layer) and adjacent two lines of reverse side (BOTTOM layer) is arranged on 5 ~ 7mm; And two lines can not have any lap.
In addition, in real world applications, it is best live width that the live width of described two lines is arranged on 7mm, can improve the stability of antenna-matching circuit like this.
Below in conjunction with an instantiation:
If 4 circle antennas are example, POS flat panel production material general in current industry is insulation board FR4, and copper is thick is arranged on 1oz, and winding method is that front (TOP layer) two is enclosed, and reverse side (BOTTOM layer) two encloses.I.e. two signal Tx1 of antenna, Tx2, the different face Rao2Quan of each leisure.In winding process, live width controls at 7mm by we, and line-spacing controls at 5-7mm.According to capacitance principle just, we should be noted that in winding process a bit, 4 circle antennas can not have any lap, have overlap, then can increase the value of A, always C can become large, again according to antenna match principle, C increases, then the Cs in match circuit can be very little.
In a word, while the inductance value Lant that the present invention can make guarantee antenna and impedance Rant own, realize capacitance Cant and minimize; Thus make antenna-matching circuit comparatively stable.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. POS is non-connects an antenna wire method, it is characterized in that, comprises the steps:
Step 1, according to capacitance equation
from formula, obtain A larger, C is larger, then the space in POS flat board shared by antenna coiling will be made during coiled antenna little, thus reduces the capacitance of antenna itself; Wherein, C represents capacitance, ε
0represent the dielectric constant of free space, A represents that POS flat board does not have the area of winding space, and h represents that POS flat board does not have the spacing of winding space;
Step 2, want little principle according to the space in POS flat board shared by antenna coiling, two corresponding to two of antenna signal Tx1, Tx2 lines are carried out obverse and reverse coiling;
In step 3, winding process, the live width of two lines is arranged on 5 ~ 8mm, the line-spacing between adjacent two lines of obverse and reverse is arranged on 5 ~ 7mm; And two lines can not have any lap.
2. a kind of POS according to claim 1 is non-connects antenna wire method, it is characterized in that: the live width of described two lines is arranged on 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498046.0A CN104282991B (en) | 2014-09-25 | 2014-09-25 | A kind of POS is non-to connect antenna wire method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498046.0A CN104282991B (en) | 2014-09-25 | 2014-09-25 | A kind of POS is non-to connect antenna wire method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104282991A true CN104282991A (en) | 2015-01-14 |
| CN104282991B CN104282991B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410498046.0A Active CN104282991B (en) | 2014-09-25 | 2014-09-25 | A kind of POS is non-to connect antenna wire method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080046034A1 (en) * | 2001-05-23 | 2008-02-21 | Cochlear Limited | Transceiver coil for auditory prosthesis |
| CN102509866A (en) * | 2011-11-03 | 2012-06-20 | 上海坤锐电子科技有限公司 | SIM antenna capable of balancing communication distance in mobile payment transfer bridge scheme |
| US20140145906A1 (en) * | 2012-02-24 | 2014-05-29 | Murata Manufacturing Co., Ltd. | Antenna device and wireless communication device |
| CN103918192A (en) * | 2011-11-02 | 2014-07-09 | 松下电器产业株式会社 | Non-contact wireless communication coil, transmission coil, and portable wireless terminal |
-
2014
- 2014-09-25 CN CN201410498046.0A patent/CN104282991B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080046034A1 (en) * | 2001-05-23 | 2008-02-21 | Cochlear Limited | Transceiver coil for auditory prosthesis |
| CN103918192A (en) * | 2011-11-02 | 2014-07-09 | 松下电器产业株式会社 | Non-contact wireless communication coil, transmission coil, and portable wireless terminal |
| CN102509866A (en) * | 2011-11-03 | 2012-06-20 | 上海坤锐电子科技有限公司 | SIM antenna capable of balancing communication distance in mobile payment transfer bridge scheme |
| US20140145906A1 (en) * | 2012-02-24 | 2014-05-29 | Murata Manufacturing Co., Ltd. | Antenna device and wireless communication device |
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| CN104282991B (en) | 2017-08-11 |
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