CN104425896A - Antenna and electronic device - Google Patents
Antenna and electronic device Download PDFInfo
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- CN104425896A CN104425896A CN201310404290.1A CN201310404290A CN104425896A CN 104425896 A CN104425896 A CN 104425896A CN 201310404290 A CN201310404290 A CN 201310404290A CN 104425896 A CN104425896 A CN 104425896A
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Abstract
The invention provides an antenna and an electronic device. The antenna comprises a flexible circuit board and a ferrite which is fit to the flexible circuit board; the flexible circuit board is set in a first shape, so that the antenna has a first magnetic flux; the first magnetic flux is greater than a second magnetic flux, and when the second magnetic flux is the magnetic flux of the antenna when the flexible circuit board is laid.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of antenna and electronic equipment.
Background technology
Along with the development of the communication technology, the communication mode between electronic equipment gets more and more, the such as telecommunication such as cellular communication, wire communication, also has such as bluetooth, NFC(Near Field Communication; Near-field communication) etc. short-range communication technology.Wherein NFC is because its setting program is simple and do not need the advantage of power supply and be widely used on mobile consumer electronics device product.
NFC available range is about 10cm, and power consumption is low, once only and a machine link, have higher confidentiality and fail safe.Further, in NFC realization, with low cost, by the combination of a chip, an antenna and some softwares, the communication of various equipment in a few cm range can be realized.
And antenna is as NFC very part and parcel, in the prior art, as illustrated in figs. ia and ib, antenna comprises: flexible PCB (FPC) 101 and ferrite 102, ferrite 102 fits on flexible PCB 101, wherein flexible PCB 101 is specially planar coil, such as shown in Figure 1a.And the magnetic line of force 103 is first through the centre of flexible PCB 101, then through ferrite 102, finally form loop.In actual use, one of them face of it linear contact lay is metal, as the metal device 104 in Fig. 1 b, so the magnetic line of force 103 of antenna can only be perforated through the ferrite 102 between flexible PCB 101 and metal device 104, namely be the gap of a relative narrower, so the negligible amounts of the magnetic line of force 103, so magnetic flux is just less.
But, the performance of antenna, such as distance of reaction or offset distance are relevant with the number of the magnetic line of force, and the magnetic line of force is fewer, namely magnetic flux is less, and the distance so responded to is shorter, equally, the effect of offset distance is also poorer, therefore, and the poor-performing of antenna structure of the prior art.
Summary of the invention
The embodiment of the present invention provides a kind of antenna and electronic equipment, in order to solve the technical problem of the poor-performing of the antenna existed in prior art.
One aspect of the present invention provides a kind of antenna, comprising: flexible PCB; Ferrite, fits on described flexible PCB; Described flexible PCB is set to the first shape and has the first magnetic flux to make described antenna; Wherein, described first magnetic flux is greater than the second magnetic flux, and described second magnetic flux is the magnetic flux of the described antenna when described flexible PCB is arranged by tiling.
Optionally, described first shape comprises one below or combination in any: " Z " font; " own " font; Waveform; Stairstepping; Zigzag.
Optionally, when described ferrite is one physically, then the side of described flexible PCB is fitted in; When described ferrite is two or more physically, then fit in the both sides of described flexible PCB.
Optionally, when described antenna is arranged in an electronic equipment, the battery of described ferrite and described electronic equipment or circuit board contacts.
Optionally, described flexible PCB is arranged on the back cover region corresponding with described circuit board.
The present invention provides a kind of electronic equipment on the other hand, comprising: casing; Circuit board, is positioned at described casing; Metalwork, is positioned at described casing; As the antenna as described in aforementioned, be arranged between described casing and described metalwork.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
Flexible PCB no longer adopts the mode of tiling to arrange by the embodiment of the present invention, but flexible PCB is arranged to the first shape, under the first shape, the magnetic flux of antenna is the first magnetic flux, and when flexible PCB tiling is arranged, magnetic flux is the second magnetic flux, and the first magnetic flux is greater than the second magnetic flux, thus, when area equation, the magnetic flux in the present embodiment is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane setting, the area of the antenna so in the present embodiment is just less than the area of the antenna that plane is arranged, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
Accompanying drawing explanation
Fig. 1 a-Fig. 1 b is the structural representation of antenna of the prior art;
Fig. 2 is the functional block diagram of antenna in one embodiment of the invention;
Fig. 3 is the circuit structure diagram of the antenna of first embodiment of the invention;
Fig. 4 is the circuit structure diagram of the antenna of second embodiment of the invention;
Fig. 5 a-Fig. 5 b is the circuit structure diagram of the antenna of third embodiment of the invention;
Fig. 6 is the circuit structure diagram of the antenna of fourth embodiment of the invention;
Fig. 7 is the circuit structure diagram of the antenna of fifth embodiment of the invention;
Fig. 8 is the circuit structure diagram of the antenna of sixth embodiment of the invention;
Fig. 9 is the functional block diagram of the electronic equipment in one embodiment of the invention.
Embodiment
The embodiment of the present invention provides a kind of antenna and electronic equipment, in order to solve the technical problem of the poor-performing of the antenna existed in prior art.
Technical scheme in the embodiment of the present invention is solve above-mentioned technical problem, and general thought is as follows:
Flexible PCB no longer adopts the mode of tiling to arrange by the embodiment of the present invention, but flexible PCB is arranged to the first shape, under the first shape, the magnetic flux of antenna is the first magnetic flux, and when flexible PCB tiling is arranged, magnetic flux is the second magnetic flux, and the first magnetic flux is greater than the second magnetic flux, thus, when area equation, the magnetic flux in the present embodiment is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane setting, the area of the antenna so in the present embodiment is just less than the area of the antenna that plane is arranged, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
One embodiment of the invention provides a kind of antenna, is applied in an electronic equipment, please refer to Fig. 2, and Fig. 2 is the functional block diagram of the antenna in the present embodiment.
As shown in Figure 2, this antenna comprises: flexible PCB 201, is set to the first shape; Ferrite 202, fits on flexible PCB 201, under the first shape, the magnetic flux of antenna is the first magnetic flux, if when flexible PCB 201 is arranged by tiling as in the prior art, the magnetic flux of antenna is the second magnetic flux, and the first magnetic flux is greater than the second magnetic flux.
Wherein, ferrite 202 can isolating metal material to the absorption of antenna magnetic field, increase the magnetic field intensity of antenna, effectively increase communication distance of reaction.The size of ferrite 202 is larger, and distance of reaction is larger, and the thickness of ferrite 202 is thicker, and distance of reaction is larger.
In the present embodiment, flexible PCB 201 is specially coil, such as, be copper coil; And ferrite 202 concrete example is as comprised: ferrite body, diaphragm, double faced adhesive tape, ferrite body plays ferritic effect, and diaphragm is to protect ferrite body, and diaphragm can't affect distance of reaction; Double faced adhesive tape is other components and parts for ferrite 202 being fitted in flexible PCB 201 and electronic equipment.Certainly, in practice, ferrite 202 can also fit on flexible PCB 201 by other means.
Further, ferrite 202 can be formed according to instructions for use punch process, so make simple.
Next the first shape in the present embodiment will be introduced in detail.
In practice, the first shape comprises one below or combination in any: " Z " font; " own " font; Waveform; Stairstepping and zigzag.Certainly, in practice, can also be other shapes, as long as the first magnetic flux can be made to be greater than the second magnetic flux.
Following elder generation is introduced with stairstepping.
Please refer to shown in Fig. 3, flexible PCB 201 is set to stairstepping, forms three faces, i.e. the first terrace 2011, tread 2012 and the second terrace 2013, and in the present embodiment, the first terrace 2011 can be parallel with the second terrace 2013, and vertical with tread 2012.In practice, flexible PCB 201 can ride on the step-like supporter of casting of electronic device.
Then ferrite 202 is processed to the shape that adapts with the first shape of flexible PCB 201, such as, fitted on flexible PCB 201 by double faced adhesive tape.In the present embodiment, ferrite 202 is a complete individuality physically, and fits in the side of flexible PCB 201.
As seen from Figure 3, because flexible PCB 201 is set to stairstepping, so between flexible PCB 201 and metalwork 204 except there being ferrite 202, also have the space contour with tread 2012, so the magnetic line of force 203 is not only first through flexible PCB 201, through ferrite 202, can also through this relative to the additional space of prior art, so the quantity of the magnetic line of force 203 will more than the quantity of the magnetic line of force 103, so the first magnetic flux can be greater than the second magnetic flux.
This shows, when area equation, the quantity of the magnetic line of force in the present embodiment is more, and namely magnetic flux is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane, the area of the antenna so in the present embodiment is just less than the area of the antenna of plane, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
Stairstepping is set to for flexible PCB 201, in practice, other execution modes can also be had, such as shown in Figure 4, ferrite 302 is two independently individualities physically, so fit in the both sides of flexible PCB 301 respectively, certainly, in other embodiments, if correspond to the repeatedly bending of flexible PCB 301, the quantity of so corresponding ferrite 302 also can increase relatively, but no matter is several, as long as ferrite 302 is fitted in respectively the both sides of flexible PCB 301 according to the first shape of flexible PCB 301.
Embodiment in Fig. 4, the thickness of antenna has superiority, and relative to the antenna structure of the prior art in Fig. 1 a to Fig. 1 b, when flexible PCB and ferritic thickness are all identical, both thickness is identical.But because in the antenna structure in Fig. 4, flexible PCB 301 is set to stairstepping, ferrite 302 fits on step-like two terraces respectively, the magnetic line of force 303 is through the left-hand component of ferrite 202, then through flexible PCB 301, then pass the right-hand component of ferrite 202, fully play so ferritic effect obtains, the quantity of the magnetic line of force 303 is just greater than the quantity of the magnetic line of force 103 of the prior art, so the first magnetic flux can be greater than the second magnetic flux.Therefore, under same thickness and equal area, the performance of the antenna in the present embodiment is also better than the performance of antenna of the prior art.
Next the situation that flexible PCB 201 is set to " Z " font is introduced again, the situation of this embodiment and stairstepping are substantially similar, during stairstepping, cascaded surface and terrace are vertical, and " Z " font, the angle be equivalent between cascaded surface and terrace is acute angle or obtuse angle, as shown in figure 5 a and 5b, what represent in Fig. 5 a be angle between cascaded surface and terrace is the situation at obtuse angle, and what represent in Fig. 5 b be angle between cascaded surface and terrace is the situation of acute angle.Stairstepping also can be say it is the special circumstances of " Z " font, succinct therefore in order to specification, no longer describes the situation of the magnetic line of force in " Z " font situation.
And then introduce the situation that flexible PCB 201 is set to " own " font, specifically as shown in Figure 6, compared to stairstepping, be equivalent to bend once in the part of cascaded surface more, in practice, bending how many times can be selected according to actual needs, as long as increase the space between antenna and metal device, improves antenna performance to the antenna performance needed.
Next introducing flexible PCB 201 is again set to corrugated situation, such as shown in Figure 7, corrugated situation is equally also the space by increasing between flexible PCB 201 and metalwork, and then increase the quantity of the magnetic line of force 203, to make so the first magnetic flux is greater than the second magnetic flux.
Similar with waveform, zigzag situation as shown in Figure 8, is also the space by increasing between flexible PCB 201 and metalwork, and then increases the quantity of the magnetic line of force 203, to make so the first magnetic flux is greater than the second magnetic flux.
By above citing, can find out, by flexible PCB being set to the first shape in the embodiment of the present application, can obtain, compared to the more magnetic line of force of the antenna of prior art, namely obtaining larger magnetic flux, namely when area equation, the quantity of the magnetic line of force in the present embodiment is more, and magnetic flux is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane setting, the area of the antenna so in the present embodiment is just less than the area of the antenna that plane is arranged, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
In above each embodiment, metalwork 204(Fig. 2), metalwork 304(Fig. 3) in practice, can be battery or the circuit board of an electronic equipment, such as mainboard.
In above each embodiment, antenna specifically can be arranged on back cover region corresponding to circuit board, the back cover region that usual circuit board is corresponding is all unconventional structure, so be easily made into the corresponding structure of the first shape of being bent to flexible PCB, be convenient to above flexible PCB is mounted in, and the thickness of complete machine can not be increased.Certainly, in other embodiments, also can be arranged on back cover region corresponding to battery or other back cover regions.
Based on same inventive concept, one embodiment of the invention also provides a kind of electronic equipment, and as shown in Figure 9, this electronic equipment comprises casing 401; Circuit board 402, is positioned at casing 401; Metalwork 403, is positioned at casing 401; Antenna 404, is arranged between casing 401 and metalwork 403.
Wherein, this electronic equipment is such as mobile phone, panel computer, notebook computer, desktop computer, or other need the electronic equipment of antenna.
In one embodiment, the structure of antenna 404 please refer to shown in Fig. 2, specifically comprises: flexible PCB 201, is set to the first shape; Ferrite 202, fits on flexible PCB, under the first shape, the magnetic flux of antenna is the first magnetic flux, if when flexible PCB 201 is arranged by tiling as in the prior art, the magnetic flux of antenna is the second magnetic flux, and the first magnetic flux is greater than the second magnetic flux.
Wherein, ferrite 202 can isolating metal material to the absorption of antenna magnetic field, increase the magnetic field intensity of antenna, effectively increase communication distance of reaction.The size of ferrite 202 is larger, and distance of reaction is larger, and ferritic thickness is thicker, and distance of reaction is larger.
In the present embodiment, flexible PCB 201 is specially coil, such as, be copper coil; And ferrite 202 concrete example is as comprised: ferrite body, diaphragm, double faced adhesive tape, ferrite body plays ferritic effect, and diaphragm is to protect ferrite body, and diaphragm can't affect distance of reaction; Double faced adhesive tape is other components and parts for ferrite 202 being fitted in flexible PCB 201 and electronic equipment.Certainly, in practice, ferrite 202 can also fit on flexible PCB 201 by other means.
Further, ferrite 202 can be formed according to instructions for use punch process, so make simple.
Next the first shape in the present embodiment will be introduced in detail.
In practice, the first shape comprises one below or combination in any: " Z " font; " own " font; Waveform; Stairstepping and zigzag.Certainly, in practice, can also be other shapes, as long as the first magnetic flux can be made to be greater than the second magnetic flux.
Please refer to shown in Fig. 3, flexible PCB 201 is set to stairstepping, forms three faces, i.e. the first terrace 2011, tread 2012 and the second terrace 2013, and in the present embodiment, the first terrace 2011 can be parallel with the second terrace 2013, and vertical with tread 2012.In practice, flexible PCB 201 can ride on the step-like supporter of electronic device shell 401.
Then ferrite 202 is processed to the shape that adapts with the first shape of flexible PCB 201, such as, fitted on flexible PCB 201 by double faced adhesive tape.In the present embodiment, ferrite 202 is a complete individuality physically, and fits in the side of flexible PCB 201.
As seen from Figure 3, because flexible PCB 201 is set to stairstepping, so between flexible PCB 201 and metalwork 204 except there being ferrite 202, also have the space contour with tread 2012, so the magnetic line of force 203 is not only first through flexible PCB 201, through ferrite 202, can also through this relative to the additional space of prior art, so the quantity of the magnetic line of force 203 will more than the quantity of the magnetic line of force 103, so the first magnetic flux can be greater than the second magnetic flux.
This shows, when area equation, the quantity of the magnetic line of force in the present embodiment is more, and namely magnetic flux is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane, the area of the antenna so in the present embodiment is just less than the area of the antenna of plane, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
Stairstepping is set to for flexible PCB 201, in practice, other execution modes can also be had, such as shown in Figure 4, ferrite 302 is two independently individualities physically, so fit in the both sides of flexible PCB 301 respectively, certainly, in other embodiments, if correspond to the repeatedly bending of flexible PCB 301, the quantity of so corresponding ferrite 302 also can increase relatively, but no matter is several, as long as ferrite 302 is fitted in respectively the both sides of flexible PCB 301 according to the first shape of flexible PCB 301.
Embodiment in Fig. 4, the thickness of antenna has superiority, and relative to the antenna structure of the prior art in Fig. 1 a to Fig. 1 b, when flexible PCB and ferritic thickness are all identical, both thickness is identical.But because in the antenna structure in Fig. 4, flexible PCB 301 is set to stairstepping, ferrite 302 fits on step-like two terraces respectively, the magnetic line of force 303 is through the left-hand component of ferrite 202, then through flexible PCB 301, then pass the right-hand component of ferrite 202, fully play so ferritic effect obtains, the quantity of the magnetic line of force 303 is just greater than the quantity of the magnetic line of force 103 of the prior art, so the first magnetic flux can be greater than the second magnetic flux.Therefore, under same thickness and equal area, the performance of the antenna in the present embodiment is also better than the performance of antenna of the prior art.
Next the situation that flexible PCB 201 is set to " Z " font is introduced again, the situation of this embodiment and stairstepping are substantially similar, during stairstepping, cascaded surface and terrace are vertical, and " Z " font, the angle be equivalent between cascaded surface and terrace is acute angle or obtuse angle, as shown in figure 5 a and 5b, what represent in Fig. 5 a be angle between cascaded surface and terrace is the situation at obtuse angle, and what represent in Fig. 5 b be angle between cascaded surface and terrace is the situation of acute angle.Stairstepping also can be say it is the special circumstances of " Z " font, succinct therefore in order to specification, no longer describes the situation of the magnetic line of force in " Z " font situation.
And then introduce the situation that flexible PCB 201 is set to " own " font, specifically as shown in Figure 6, compared to stairstepping, be equivalent to bend once in the part of cascaded surface more, in practice, bending how many times can be selected according to actual needs, as long as increase the space between antenna and metal device, improves antenna performance to the antenna performance needed.
Next introducing flexible PCB 201 is again set to corrugated situation, such as shown in Figure 7, corrugated situation is equally also the space by increasing between flexible PCB 201 and metalwork, and then increase the quantity of the magnetic line of force 203, to make so the first magnetic flux is greater than the second magnetic flux.
Similar with waveform, zigzag situation as shown in Figure 8, is also the space by increasing between flexible PCB 201 and metalwork, and then increases the quantity of the magnetic line of force 203, to make so the first magnetic flux is greater than the second magnetic flux.
In above each embodiment, metalwork 403, in practice, can be battery or circuit board 402, the such as mainboard of electronic equipment.
In above each embodiment, antenna 404 specifically can be arranged on the back cover region of circuit board 402 correspondence, the back cover region that usual circuit board is corresponding is all unconventional structure, so be easily made into the corresponding structure of the first shape of being bent to flexible PCB, be convenient to above flexible PCB is mounted in, and the thickness of complete machine can not be increased.Certainly, in other embodiments, also can be arranged on back cover region corresponding to battery or other back cover regions.Wherein, back cover is a part for casing 401.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
Flexible PCB no longer adopts the mode of tiling to arrange by the embodiment of the present invention, but flexible PCB is arranged to the first shape, under the first shape, the magnetic flux of antenna is the first magnetic flux, and when flexible PCB tiling is arranged, magnetic flux is the second magnetic flux, and the first magnetic flux is greater than the second magnetic flux, thus, when area equation, the magnetic flux in the present embodiment is comparatively large, so the distance of induction is longer, equally, the effect of offset distance is also better.Further, if same with the performance of the antenna of plane setting, the area of the antenna so in the present embodiment is just less than the area of the antenna that plane is arranged, and the area taking electronic equipment is also less, be beneficial to the design of all the other antennas, the antenna of such as wireless charging; Further, when antenna area hour, corresponding ferritic area is also less, so saved cost.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. an antenna, comprising:
Flexible PCB;
Ferrite, fits on described flexible PCB;
Described flexible PCB is set to the first shape and has the first magnetic flux to make described antenna;
Wherein, described first magnetic flux is greater than the second magnetic flux, and described second magnetic flux is the magnetic flux of the described antenna when described flexible PCB is arranged by tiling.
2. antenna as claimed in claim 1, is characterized in that, described first shape comprises one below or combination in any:
" Z " font;
" own " font;
Waveform;
Stairstepping;
Zigzag.
3. antenna as claimed in claim 1, is characterized in that, when described ferrite is one physically, then fit in the side of described flexible PCB; When described ferrite is two or more physically, then fit in the both sides of described flexible PCB.
4. antenna as claimed in claim 1, is characterized in that, when described antenna is arranged in an electronic equipment, and the battery of described ferrite and described electronic equipment or circuit board contacts.
5. antenna as claimed in claim 4, it is characterized in that, described flexible PCB is arranged on the back cover region corresponding with described circuit board.
6. an electronic equipment, comprising:
Casing;
Circuit board, is positioned at described casing;
Metalwork, is positioned at described casing;
Antenna as described in any one of claim 1-5, is arranged between described casing and described metalwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310404290.1A CN104425896A (en) | 2013-09-06 | 2013-09-06 | Antenna and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310404290.1A CN104425896A (en) | 2013-09-06 | 2013-09-06 | Antenna and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104425896A true CN104425896A (en) | 2015-03-18 |
Family
ID=52974248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310404290.1A Pending CN104425896A (en) | 2013-09-06 | 2013-09-06 | Antenna and electronic device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104425896A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988949A (en) * | 2020-08-28 | 2020-11-24 | 唐文健 | Flexible printed circuit board |
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| JP3215197B2 (en) * | 1992-12-11 | 2001-10-02 | 富士通株式会社 | Antenna module and method of manufacturing the same |
| CN1918588A (en) * | 2004-03-16 | 2007-02-21 | 欧姆龙株式会社 | Thin ic tag and method of producing the same |
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Application publication date: 20150318 |
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