CN210142722U - Electronic equipment with miniaturized near field communication antenna - Google Patents
Electronic equipment with miniaturized near field communication antenna Download PDFInfo
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- CN210142722U CN210142722U CN201921096761.6U CN201921096761U CN210142722U CN 210142722 U CN210142722 U CN 210142722U CN 201921096761 U CN201921096761 U CN 201921096761U CN 210142722 U CN210142722 U CN 210142722U
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Abstract
The utility model discloses an electronic equipment with miniaturized near field communication antenna, this miniaturized near field communication antenna includes the base plate, inlay and locate in the base plate and coil the coil that forms by the wire, paste the magnetic sheet of locating the base plate one side, the coil is at least including relative first part wire and the second part wire that sets up, the wire diameter of first part wire is greater than the wire diameter of second part wire, the magnetic sheet covers first part wire place region, electronic equipment still includes with the broken magnetic component of miniaturized near field communication antenna complex, the magnetic sheet both sides are located respectively to broken magnetic component and base plate. This electronic equipment with miniaturized near field communication antenna can effectively avoid relatively near and the mutual offset between the magnetic line of force of the opposite direction that produces between the wire that the electric current direction is opposite, and then improves the transmission energy of this miniaturized near field antenna when carrying out read-write card, card simulation, improves the wholeness ability of this near field antenna, further realizes the miniaturization of near field antenna to be applicable to small-size electronic equipment.
Description
Technical Field
The utility model relates to an antenna field, in particular to electronic equipment with miniaturized near field communication antenna.
Background
Near Field Communication (Near Field Communication) is an emerging technology, devices (such as mobile phones) using Near Field Communication technology can exchange data under the condition of being close to each other, is integrated and evolved from non-contact Radio Frequency Identification (RFID) and interconnection and intercommunication technology, and realizes applications such as mobile payment, electronic ticketing, entrance guard, mobile identity recognition, anti-counterfeiting and the like by integrating functions of an induction type card reader, an induction type card and point-to-point Communication on a single chip and utilizing a mobile terminal. The near field communication service combines the near field communication technology and the mobile communication technology, realizes multiple functions of electronic payment, identity authentication, ticketing, data exchange, anti-counterfeiting, advertisement and the like, and is a novel service in the field of mobile communication. The near field communication service changes the mode of using the mobile phone by the user, so that the consumption behavior of the user gradually becomes electronization, and a novel user consumption and service mode is established.
Along with the development of science and technology, many electronic products, the function is more powerful, and the space of reserving for the antenna is littleer and more, and on the other hand market competition pressure is bigger and bigger, so the requirement to the miniaturization of antenna is inevitable trend, and after the antenna is miniaturized, not only the product that the characteristic is good will be designed in limited space, but also the cost of saving that can be great to improve market competition.
Therefore, in order to adapt to small electronic products, the size of the near-field antenna is reduced, that is, the size of the substrate is reduced, and the wire diameter of the coil in the antenna is reduced. The problems thus posed are: because the substrate becomes narrower after being reduced in size, the distance between the opposing wires is very close. When the coil is energized, as shown in fig. 1, the directions of currents between the relatively close wires are opposite, the directions of generated magnetic lines are opposite, and the magnetic lines in the region where the magnetic lines overlap cancel each other, so that the transmission energy of the antenna during the card reading and writing and card simulation is influenced, and the overall performance of the near-field antenna is influenced.
Of course, some miniaturized near-field antennas cover all of the coils with magnetic sheets, but the above problems cannot be effectively solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of the prior art, the embodiment of the utility model provides an electronic equipment with miniaturized near field communication antenna, its occupation space is little, and the gain is high.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides an electronic equipment with miniaturized near field communication antenna, miniaturized near field communication antenna includes the base plate, inlays to be located coil, subsides that form are coiled by the wire in the base plate are located the magnetic sheet of base plate one side, the coil is at least including relative first part wire and the second part wire that sets up, just the wire diameter of first part wire is greater than the wire diameter of second part wire, the magnetic sheet covers first part wire place region is in order to compress magnetic field space, makes the magnetic field that first part wire produced be located magnetic sheet one side, electronic equipment still include with the broken magnetic component of miniaturized near field communication antenna complex, broken magnetic component with the base plate is located respectively the magnetic sheet both sides.
In some embodiments, the magnetic breaking assembly comprises at least one of a metal part or a battery, and the metal part is a component in the electronic device.
In some embodiments, the magnetic breaking assembly is arranged on one side of the second part of the lead.
In some embodiments, the area of the miniaturized near field communication antenna does not exceed 500mm2。
In some embodiments, the coil comprises a coil body portion and a coil extension portion, the coil body portion and coil extension portion forming a zig-zag loop, the coil comprising a head end and a tail end, and the head end and tail end both being located on the coil extension portion.
In some embodiments, the cross-section of the coil body portion is one of circular, quadrilateral, hexagonal, or octagonal.
In some embodiments, the cross section of the coil body is rectangular, the coil body includes a first portion of conducting wires, a third portion of conducting wires, a second portion of conducting wires and a fourth portion of conducting wires which are connected in sequence, and the conducting wire diameters of the third portion of conducting wires and the fourth portion of conducting wires are equal.
In some embodiments, the wire diameter of the third portion of wires and the wire diameter of the fourth portion of wires are both smaller than the wire diameter of the first portion of wires.
In some embodiments, the magnetic sheet covers the areas where the first, third and fourth partial conductive lines are located.
In some embodiments, the other side of the substrate is attached to the inner side of the electronic device shell.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is:
the utility model provides an electronic equipment with miniaturized near field communication antenna, constitute the wire of coil in the miniaturized near field communication antenna, its different parts have different diameters, make the coil have thick wire portion and thin wire portion that relative setting, thick wire portion covers the magnetic sheet in the region, thereby make the magnetic line of force that is close to the magnetic sheet compress into the magnetic sheet, change the magnetic line of force direction and make magnetic field only be located base plate one side, and simultaneously, this miniaturized near field antenna is installed in broken magnetic assembly department, broken magnetic assembly and base plate locate the magnetic sheet both sides respectively, broken magnetic assembly cuts off the magnetic line of force of thin wire portion, thereby avoid the phenomenon of offsetting each other between the magnetic line of force of opposite direction that produces between the wire relatively nearer and opposite current direction, and then improve this miniaturized near field antenna and read and write the card, the transmitted energy when the card is simulated, improve this near field antenna's wholeness ability, further realizing the miniaturization of the near field antenna so as to be suitable for small electronic equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the distribution of magnetic lines of force of a miniaturized NFC antenna provided in the background art without covering a magnetic sheet;
fig. 2 is a schematic front structure diagram of a miniaturized near field communication antenna provided by an embodiment of the present invention:
fig. 3 is a schematic diagram of a reverse structure of a miniaturized nfc antenna according to an embodiment of the present invention;
fig. 4 is a schematic diagram of magnetic force line distribution when the miniaturized nfc antenna provided by the embodiment of the present invention is not installed at the magnetic breaking assembly;
fig. 5 is a schematic diagram of magnetic force line distribution when the miniaturized nfc antenna provided by the embodiment of the present invention is installed at the magnetic breaking assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "X axis", "Y axis", "Z axis", "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific structure of a miniaturized near field communication antenna protected by the present invention is described in detail below with reference to fig. 2 to 5.
Examples
As shown in fig. 2 to 5, the present embodiment provides an electronic device with a miniaturized nfc antenna, which includes a miniaturized nfc antenna 100 disposed therein for card/read/write and card simulation, wherein the area of the nfc antenna 100 is not more than 500mm2Corresponding electronic elements are integrated on the near field communication antenna 100, and multiple functions of mobile payment, electronic ticketing, entrance guard, mobile identity recognition, anti-counterfeiting, advertisement and the like are realized by using mobile terminals such as mobile phones, tablets and the like.
Specifically, referring to fig. 2 to 3, the miniaturized nfc antenna 100 includes a substrate 1, a coil 2 embedded in the substrate 1 and formed by winding a conductive wire, and a magnetic sheet 3 attached to a front surface of the substrate 1. The number of turns of the coil 2 is not limited, and each turn of the coil is located in the same plane, namely the plane of the substrate 1. The magnetic sheet 3 does not cover all the coils 2, and is in a half-covered form, covering only a useful part of the wire to compress the magnetic field space of the wire.
Further, referring to fig. 4, the coil 2 at least includes a first portion of wires 4 and a second portion of wires 5 that are oppositely disposed, and the wire diameter of the first portion of wires 4 is larger than the wire diameter of the second portion of wires 5, so that when the coil is energized, the magnetic field intensity generated by the first portion of wires 4 is larger than the magnetic field intensity generated by the second portion of wires 5. In addition, since the direction of the current in the first partial lead 4 is opposite to the direction of the current in the second partial lead 5, the directions of the magnetic lines generated by the two parts are opposite, and the overlapped parts of the magnetic lines cancel each other.
In a preferred embodiment, the first portion of the conductive wires 4 in this embodiment have a wire diameter of 1 ± 0.05mm, and the second portion of the conductive wires 5 have a wire diameter of 0.15 ± 0.05 mm.
In order to obtain stronger emission energy, the first part of the wires 4 are usually used as useful wires, and the generated magnetic field is a useful magnetic field, and the second part of the wires 5 are used as useless wires, and the generated magnetic field is a useless magnetic field. In practical application, it is necessary to protect the high useful magnetic field and destroy the useless magnetic field so as to avoid the useful magnetic field lines from being counteracted or weakened by the useless magnetic field lines. Therefore, the near field communication antenna 100 in this embodiment should protect the magnetic lines corresponding to the first portion of the conductive wires 4 and destroy the magnetic lines corresponding to the second portion of the conductive wires 5.
Therefore, the magnetic sheet 3 in this embodiment covers the area where the first portion of the conductive wires 4 are located, so that the magnetic lines close to the magnetic sheet 2 are compressed into the magnetic sheet 2 to compress the magnetic space generated by the first portion of the conductive wires 4, and the magnetic field generated by the first portion of the conductive wires 4 is located at one side of the magnetic sheet 3, and at this time, the magnetic fields generated by the first portion of the conductive wires 4 and the second portion of the conductive wires 5 in the nfc antenna 100 are as shown in fig. 4.
Meanwhile, the electronic device further comprises a magnetic breaking assembly 6 matched with the miniaturized near field communication antenna 100, and the magnetic breaking assembly 6 and the substrate 1 are respectively arranged on two sides of the magnetic sheet 2. The magnetism breaking assembly 6 at least comprises one of a metal part or a battery, wherein the metal part is a component in the electronic equipment. The magnetic breaking element 6 is located at one end of the second portion of the conductive line 5, and may span the second portion of the conductive line 5 to the first portion of the conductive line 4, even extending to the size of the whole substrate 1, which is not limited in this embodiment. Under the action of the magnetic breaking component 6, magnetic lines of force generated by the second part of the conducting wire 5 can be cut off. Because the magnetic field that first part wire 4 produced is located one side of magnetic sheet 2 under the effect of magnetic sheet 2, broken magnetic component 6 is located the other side of magnetic sheet 2, broken magnetic component 6 does not influence the magnetic field that first part wire 4 produced. At this time, the magnetic fields generated by the first portion of the conductive wires 4 and the second portion of the conductive wires 5 in the nfc antenna 100 are as shown in fig. 5.
Therefore, in this embodiment, the magnetic field of the nfc antenna 100 is the magnetic field generated by the first portion of the conductive wires 4, and after the magnetic field of the second portion of the conductive wires 5 is destroyed, the portion of the conductive wires only plays a role in conducting.
Referring to fig. 2 to 3, in the nfc antenna 100 of the present embodiment, the coil 2 includes a coil main portion 21 and a coil extension portion 22, and the coil main portion 21 and the coil extension portion 22 form a loop in a shape of a Chinese character 'tu'. The coil 2 includes a head end 23 connected to the receiving end by a jumper and a tail end 24 connected to the transmitting end by a jumper, and the head end 23 and the tail end 24 are both located in the coil extension portion 22.
The cross section of the coil body portion 21 is one of circular, quadrangular, hexagonal, or octagonal. Preferably, the cross section of the coil body part 21 is rectangular, the coil body part 21 includes a first partial lead 4, a third lead part 7, a second partial lead 5 and a fourth lead part 8 which are connected in sequence, and the lead diameters of the third lead part 7 and the fourth lead part 8 are equal and smaller than the lead diameter of the first partial lead. Since the third conductor portion 7 and the fourth conductor portion 8 are disposed opposite to each other and the directions of the currents are opposite to each other when the current is applied (as indicated by arrows in fig. 3), the generated magnetic fields and the regions are equal and opposite to each other, so that the two magnetic fields cancel each other out and have no influence on the magnetic field generated by the first conductor portion 4.
In a preferred embodiment, the diameters of the second partial lead 5, the third partial lead 7 and the fourth partial lead 8 are all equal and are 0.15 ± 0.05 mm.
Further, as a preferred embodiment, the magnetic sheet 2 covers the areas where the first partial lead 4, the third partial lead 7 and the fourth partial lead 8 are located.
The near field communication antenna 100 further includes a back adhesive region 9 disposed on the back surface of the substrate 1, for attaching the near field communication antenna 100 to the inner side surface of the electronic device housing.
The electronic device with the miniaturized near field communication antenna provided by the embodiment, the small near field communication antenna is provided with a wire forming a coil, different parts of the wire form different diameters, the coil is provided with a thick wire part and a thin wire part which are oppositely arranged, the thick wire part covers the magnetic sheet in an area, so that magnetic lines of force close to the magnetic sheet are compressed into the magnetic sheet, the direction of the magnetic lines of force is changed, the magnetic field is only positioned on one side of the substrate, meanwhile, the small near field antenna is arranged at the position of the magnetic breaking component, the magnetic breaking component and the substrate are respectively arranged on two sides of the magnetic sheet, the magnetic breaking component cuts off the magnetic lines of force of the thin wire part, the phenomenon that the magnetic lines of force with opposite directions are generated between the wires which are relatively close and opposite in current directions is avoided, the phenomenon that the magnetic lines of force with opposite directions are mutually offset is avoided, the emission, further realizing the miniaturization of the near field antenna so as to be suitable for small electronic equipment.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electronic device with a miniaturized near field communication antenna, characterized in that: miniaturized near field communication antenna includes the base plate, inlays to be located coil, subsides that just twine the formation by the wire in the base plate are located the magnetic sheet of base plate one side, the coil is at least including relative first part wire and the second part wire that sets up, just the wire diameter of first part wire is greater than the wire diameter of second part wire, the magnetic sheet covers first part wire place region is in order to compress magnetic field space, makes the magnetic field that first part wire produced be located magnetic sheet one side, electronic equipment still include with the broken magnetic component of miniaturized near field communication antenna complex, broken magnetic component with the base plate is located respectively the magnetic sheet both sides.
2. An electronic device with a miniaturized near field communication antenna according to claim 1, characterized in that: the magnetism breaking assembly at least comprises one of a metal part or a battery, and the metal part is a component in the electronic equipment.
3. An electronic device with a miniaturized near field communication antenna according to claim 2, characterized in that: the magnetic breaking component is arranged on one side of the second part of the lead.
4. An electronic device with a miniaturized near field communication antenna according to claim 1, characterized in that: the area of the miniaturized near field communication antenna is not more than 500mm2。
5. An electronic device with a miniaturized near field communication antenna according to any of the claims 1 to 4, characterized in that: the coil comprises a coil main body part and a coil extension part, wherein the coil main body part and the coil extension part form a convex loop, the coil comprises a head end and a tail end, and the head end and the tail end are both located on the coil extension part.
6. An electronic device with a miniaturized near field communication antenna according to claim 5, characterized in that: the cross section of the coil body portion is one of circular, quadrangular, hexagonal or octagonal.
7. An electronic device with a miniaturized near field communication antenna according to claim 5, characterized in that: the cross section of the coil body is rectangular, the coil body comprises a first part of wires, a third part of wires, a second part of wires and a fourth part of wires which are sequentially connected, and the diameters of the wires of the third part of wires and the fourth part of wires are equal.
8. An electronic device with a miniaturized near field communication antenna according to claim 7, characterized in that: the wire diameters of the third part of wires and the fourth part of wires are smaller than the wire diameter of the first part of wires.
9. An electronic device with a miniaturized near field communication antenna according to claim 7, characterized in that: the magnetic sheet covers the areas where the first part of the conducting wires, the third part of the conducting wires and the fourth part of the conducting wires are located.
10. An electronic device with a miniaturized near field communication antenna according to claim 5, characterized in that: the other side of the substrate is attached to the inner side face of the electronic equipment shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921096761.6U CN210142722U (en) | 2019-07-12 | 2019-07-12 | Electronic equipment with miniaturized near field communication antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921096761.6U CN210142722U (en) | 2019-07-12 | 2019-07-12 | Electronic equipment with miniaturized near field communication antenna |
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| CN210142722U true CN210142722U (en) | 2020-03-13 |
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| CN201921096761.6U Active CN210142722U (en) | 2019-07-12 | 2019-07-12 | Electronic equipment with miniaturized near field communication antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416731A (en) * | 2019-07-12 | 2019-11-05 | 禾邦电子(苏州)有限公司 | A kind of electronic equipment with miniaturization near-field communication aerial |
-
2019
- 2019-07-12 CN CN201921096761.6U patent/CN210142722U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416731A (en) * | 2019-07-12 | 2019-11-05 | 禾邦电子(苏州)有限公司 | A kind of electronic equipment with miniaturization near-field communication aerial |
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