CN105071023A - Cell phone antenna - Google Patents
Cell phone antenna Download PDFInfo
- Publication number
- CN105071023A CN105071023A CN201510494253.3A CN201510494253A CN105071023A CN 105071023 A CN105071023 A CN 105071023A CN 201510494253 A CN201510494253 A CN 201510494253A CN 105071023 A CN105071023 A CN 105071023A
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- cell phone
- metal layer
- antenna
- mobile phone
- rear cover
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Abstract
The invention discloses a cell phone antenna. The cell phone antenna comprises a main ground metal layer and a radiation metal layer. The main ground metal layer and the radiation metal layer are arranged on the outer surface of a cell phone back cover and on the same surface. A gap filled with insulation materials is arranged between the main ground metal layer and the radiation metal layer. The main ground metal layer is used for grounding of the cell phone antenna body. A feeding point is arranged on the radiation metal layer as a radiator of the cell phone antenna body. The cell phone antenna also comprises a strip-shaped metal wiring which is arranged on the inner surface of the cell phone back cover and corresponds to one side of the radiation metal layer. The starting end of the metal wiring is connected with a feeding wire on a cell phone main board. The tail end is connected with the feeding point. A grounding point is arranged on the other side of the radiation metal layer. The cell phone antenna also comprises a tuned circuit arranged on the inner surface of the cell phone back cover. The input end of the tuned circuit is connected with the grounding point. The output end is connected with a grounding wire on the cell phone main body. The cell phone antenna has quite high radiation intensity and quite large bandwidth.
Description
Technical field
The present invention relates to antenna for mobile phone technical field, particularly relate to a kind of antenna for mobile phone.
Background technology
In conventional art, along with user improves constantly the requirement of mobile terminal outward appearance and experience, mobile phone adopts metal shell more and more.If but conventionally in the patten's design antenna for mobile phone of built-in aerial, then due to the closure of metal shell, to cause antenna for mobile phone easily shield by metal shell, therefore, antenna for mobile phone is needed still to design in outer handset, the antenna for mobile phone in conventional art is caused to be all often center antenna, annular or slot antenna, usual employing metal center+plastic rear cover upward wiring form, by filling plastic to breakpoint place or gap place, but the mobile phone of above-mentioned metal center+plastic rear cover does not all support all-metal bonnet.
And in order to use all-metal bonnet in conventional art, maximum using mobile phone components and parts, be then integrated into antenna for mobile phone on all-metal bonnet, and undertaken tuning by switching earth point.Such as, as shown in Figure 1, A1 or A3 in Fig. 1 can be used as the radiant body part of antenna for mobile phone, and A2 can be used as the grounded part of antenna for mobile phone.Then, by the gap between adjustment A1 or A3 and A2 and B1, B2 ... the position of the earth points such as B6 is carried out tuning.
But, the design of the antenna for mobile phone of above-mentioned framework is very inconvenient when the resonance frequency of tuning antenna for mobile phone, is limited by the antenna resonant frequency adjustment (changing gap size, earth point position) of underaction, make the radiance of antenna for mobile phone relatively weak, limited bandwidth.Therefore, it is relatively weak to there is radiance in the framework of the antenna for mobile phone in conventional art, band-limited technical problem.
Summary of the invention
Based on this, in order to solve, to carry out by regulated ground point the radiance that tuning antenna for mobile phone exists in the above-mentioned conventional art mentioned relatively weak, and band-limited technical problem, spy proposes a kind of antenna for mobile phone.
A kind of antenna for mobile phone, it is characterized in that, comprise and be arranged on cell phone rear cover outer surface and be in main ground metal level and the radiation metal layer on same surface, be provided with the gap of filling insulating material between described main ground metal level and radiation metal layer, described main ground metal level is as the ground connection of described antenna for mobile phone; Described radiation metal layer is provided with distributing point, as the radiant body of described antenna for mobile phone; Described antenna for mobile phone also comprises the metal routing of the strip corresponding with the side of described radiation metal layer being arranged at described cell phone rear cover inner surface, the initiating terminal of described metal routing is connected with the feed line on cell phone mainboard with described, end end is connected with described distributing point, and the opposite side of described radiation metal layer is provided with earth point, described antenna for mobile phone also comprises the tuning circuit being arranged at described cell phone rear cover inner surface, the input of described tuning circuit is connected with described earth point, and the output of described tuning circuit is connected with the ground wire on cell phone mainboard.
Wherein in an embodiment, described radiation metal layer comprises the first radiation metal layer and the second radiation metal layer, described first radiation metal layer is for being arranged at the strip region at the top of described cell phone rear cover outer surface, described second radiation metal layer is for being arranged at the strip region of the bottom of described cell phone rear cover outer surface, described main ground metal level is the boxed area at the middle part being arranged at described cell phone rear cover outer surface, clamped by described first radiation metal layer and described second radiation metal layer.
Wherein in an embodiment, the ratio of the surface area of described main ground metal level and described first radiation metal layer or described second radiation metal layer is greater than 10.
Wherein in an embodiment, described cell phone rear cover also comprises insulation support plate, the surface that described main ground metal level and described radiation metal layer fit in described insulation support plate forms the outer surface of described cell phone rear cover, the insulating material of filling in the gap between described main ground metal level and radiation metal layer be described insulation support plate to described cell phone rear cover outer surface extend raised, the input of described tuning circuit is connected with described earth point through described insulation support plate, ground wire on described cell phone mainboard is connected with the output of described tuning circuit by metal thimble or shell fragment, described metal routing is positioned at the described cell phone rear cover inner surface position corresponding with the side of described radiation metal layer, and the initiating terminal position be connected with the feed line on cell phone mainboard is positioned at drift angle or the base angle of described cell phone rear cover, earth point is arranged on drift angle or the base angle place of the opposite side of the described cell phone rear cover relative with the initiating terminal of metal routing.
Wherein in an embodiment, the length of described metal routing is 19mm to 21mm, and width is 4mm to 5mm.
Wherein in an embodiment, the width in the gap between described main ground metal level and radiation metal layer is 1mm to 4mm.
In addition, in order to solve, to carry out by regulated ground point the radiance that tuning antenna for mobile phone exists in the above-mentioned conventional art mentioned relatively weak, and band-limited technical problem, spy proposes a kind of mobile phone.
A kind of mobile phone, comprise cell phone mainboard, described cell phone mainboard comprises ground wire and feed line, it is characterized in that, also comprise foregoing antenna for mobile phone, the output of the tuning circuit in described antenna for mobile phone is connected with the ground wire on described cell phone mainboard, and the initiating terminal of the metal routing in described antenna for mobile phone is connected with the feed line on described cell phone mainboard.
Implement the embodiment of the present invention, following beneficial effect will be had:
After have employed above-mentioned antenna for mobile phone, cell phone rear cover and mobile phone, when carrying out tuning to the resonance frequency of the antenna on mobile phone, only need by regulating the parameter value being positioned at the tuning circuit of cell phone rear cover inner surface, get final product the tuning of the resonance frequency of twin aerial, compared with passing through the tuning manner of the position adjusting earth point in conventional art, tuning manner is easier, the easier resonance frequency by antenna for mobile phone is adjusted to best spectral range, thus the radiance of antenna for mobile phone and bandwidth are improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Wherein:
Fig. 1 is the schematic diagram of the antenna for mobile phone in conventional art;
Fig. 2 is the structural representation on the inner surface of antenna for mobile phone place cell phone rear cover in an embodiment;
Fig. 3 is the structural representation on the outer surface of antenna for mobile phone place cell phone rear cover in an embodiment;
Fig. 4 is S parameter (return loss) schematic diagram that in an embodiment, antenna for mobile phone is corresponding;
Fig. 5 is the Surface current distribution figure that in an embodiment, antenna for mobile phone mode of operation is corresponding.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In addition, in order to solve, to carry out by regulated ground point the radiance that tuning antenna for mobile phone exists in the above-mentioned conventional art mentioned relatively weak, and band-limited technical problem, spy proposes a kind of antenna for mobile phone.
This antenna for mobile phone as shown in Figure 2, comprise and be arranged on cell phone rear cover 10 outer surface and be in main ground metal level 102 and the radiation metal layer 104 on same surface, be provided with the gap 106 of filling insulating material between main ground metal level 102 and radiation metal layer 104, main ground metal level 102 is as the ground connection of antenna for mobile phone; Radiation metal layer 104 is provided with distributing point S, as the radiant body of antenna for mobile phone; Antenna for mobile phone also comprises the metal routing 108 of the strip corresponding with the side of radiation metal layer 104 being arranged at cell phone rear cover inner surface, the initiating terminal of metal routing 108 is connected with the feed line on cell phone mainboard, end end is connected with distributing point S, and the opposite side of radiation metal layer 104 is provided with earth point G, antenna for mobile phone also comprises the tuning circuit 112 being arranged at cell phone rear cover 10 inner surface, the input of tuning circuit 112 is connected with earth point G, and the output of tuning circuit 112 is connected with the ground wire on cell phone mainboard.
Concrete, as shown in Figure 2, cell phone rear cover 10 also comprises insulation support plate 110, the surface that main ground metal level 102 and radiation metal layer 104 fit in the support plate 110 that insulate forms the outer surface of cell phone rear cover 10, the insulating material of filling in the gap 106 between main ground metal level 102 and radiation metal layer 104 be insulation support plate 110 to cell phone rear cover outer surface extend raised, the input of tuning circuit 112 is connected with earth point G through insulation support plate 110, ground wire on cell phone mainboard is connected with the output of tuning circuit 112 by metal thimble or shell fragment, metal routing 108 is positioned at the cell phone rear cover 10 inner surface position corresponding with the side of radiation metal layer 104, and the initiating terminal position be connected with the feed line on cell phone mainboard is positioned at drift angle or the base angle of cell phone rear cover 10, earth point G is arranged on drift angle or the base angle place of the opposite side of the cell phone rear cover 10 relative with the initiating terminal of metal routing 108.
That is, in the present embodiment, the design of antenna for mobile phone is based on cell phone rear cover 10, and cell phone rear cover 10 forms the main body of cell phone rear cover 10 by insulation support plate 110, and insulation support plate 110 is the main part of cell phone rear cover 10, can be that the isolation material such as plastics are made.
The effect of insulation support plate 110 is the handset front cases being covered on Mobile telephone front panel as cell phone rear cover, for closed mobile phone.
The effect of main ground metal level 102 is the ground connection as antenna for mobile phone.
The effect of radiation metal layer 104 is connected, as the radiant body of antenna for mobile phone by the feed line of metal routing 108 with the feed circuit on cell phone mainboard.
The gap 106 of being filled by isolation material between main ground metal level 102 and radiation metal layer 104 namely as the medium of antenna for mobile phone, for Excitation Electromagnetic Wave.Namely what insulation support plate 110 extended to cell phone rear cover 10 outer surface in gap 106 raisedly keeps the outer surface of cell phone rear cover 10 to be smooth bonnet plane for fixing metal slide block 108 in mobile phone products.
The effect of metal routing 108 is on radiation metal layer 104 by current delivery, namely the electric current in the feed circuit on cell phone mainboard is first delivered on metal routing 108 by the initiating terminal of metal routing 108, and then be delivered on radiation metal layer 104 on distributing point S by metal routing 108, thus electric current is made to enter into radiation metal layer 104 as radiant body.
The effect of tuning circuit 112 is in the ground wire on cell phone mainboard by the current delivery on radiation metal layer 104, thus make the feed line on cell phone mainboard and the ground wire on cell phone mainboard form loop in radiation metal layer 104, include metal routing 108, radiation metal layer 104 and tuning circuit 112 in this loop.Induced current and the main ground metal level 102 in this loop produce resonance, thus can be used as antenna transmission electromagnetic wave.
When carrying out tuning to the resonance frequency of antenna for mobile phone, by regulating the parameter of tuning circuit 112, (tuning circuit 112 is for comprising the components and parts of electric capacity and inductance, or be integrated with the chip of electric capacity and inductance, carry out tuning by control command to its parameter) carry out tuning, because structure is simpler, therefore only need by regulating the parameter of tuning circuit 112, the position being tuned to best resonance frequency can be found, compared with adjusting the mode of multiple earth point position in conventional art, tuning is more convenient to operate, thus easier by the resonance frequency tunings of antenna for mobile phone to optimum state, thus also improve radiation intensity, add bandwidth.
Preferably, as shown in Figure 2, the length of metal routing 108 is 19mm to 21mm, and width is 4mm to 5mm.
Preferably, as shown in Figure 2, the width in the gap 106 between main ground metal level 102 and radiation metal layer 104 is 1mm to 4mm.
In another embodiment, cell phone rear cover also can comprise the part of two antennas, namely comprise two radiant bodies.
Concrete, as shown in Figure 3, radiation metal layer 104 can comprise the first radiation metal layer 1042 and the second radiation metal layer 1044, first radiation metal layer 1042 is for being arranged at the strip region at the top of cell phone rear cover 10 outer surface, second radiation metal layer 1044 is for being arranged at the strip region of the bottom of cell phone rear cover 10 outer surface, main ground metal level 102 for being arranged at the boxed area at the middle part of cell phone rear cover outer surface, clamped by the first radiation metal layer 1042 and the second radiation metal layer 1044.
Wherein, first radiation metal layer 1042 and the second radiation metal layer 1044 can arrange distributing point S1 and distributing point S2 and earth point G1 and earth point G2 respectively, corresponding earth point G1 and earth point G2 can arrange the tuning circuit of different parameters, distributing point S1 and distributing point S2 can be different from cell phone mainboard feed line be connected, corresponding different resonance frequency.
That is, antenna for mobile phone can comprise be positioned at mobile phone grip top, direction by the first radiation metal layer 1042 as the first antenna of radiant body and be positioned at mobile phone grip bottom direction by second antenna of the second radiation metal layer 1044 as radiant body.
The relative position of distributing point S1 and distributing point S2 on the first radiation metal layer 1042 and the second radiation metal layer 1044 can be set to difference, and make the resonance frequency of the first antenna and the second antenna different by the parameter of the tuning different tuning circuit connected from earth point G1 and earth point G2, thus make antenna for mobile phone can all can be best under different frequency range resonant frequency.
In addition, the ratio of the surface area of main ground metal level 102 and the first radiation metal layer 1042 or the second radiation metal layer 1044 can be set to be greater than 10.That is, the main ground metal level 102 of larger area can be set, make the area of ground connection become comparatively large, thus make mobile phone signal more stable.
As shown in Figure 4, Fig. 4 has set forth S parameter (return loss) corresponding to antenna for mobile phone form of the present invention.As seen from Figure 4, antenna for mobile phone of the present invention is less in the return loss of high-frequency region, thus improves bandwidth.
As shown in Figure 5, Fig. 5 has set forth Surface current distribution figure corresponding to antenna operation mode of the present invention.Surface current distribution from Fig. 5, the surface current of all frequency ranges is all mainly distributed in the middle part of cell phone rear cover, the surface current of metal both sides is less, less on antenna performance impact time hand-held mobile terminal (mainly holding metal back cover both sides), therefore the hand of antenna of the present invention damage (during hand held terminal, staff is to the loss of signal) and head is used to damage (when subsides ear is made a phone call, the number of people is to the loss of signal) all relatively little, and the loss of right-hand man and left and right head is all more balanced, the demand that following mobile terminal improves constantly antenna performance can be met well.
In addition, in order to solve, to carry out by regulated ground point the radiance that tuning antenna for mobile phone exists in the above-mentioned conventional art mentioned relatively weak, and band-limited technical problem, spy proposes a kind of mobile phone.
A kind of mobile phone, comprise cell phone mainboard, cell phone mainboard comprises ground wire and feed line, also comprise foregoing antenna for mobile phone, the output of the tuning circuit in described antenna for mobile phone is connected with the ground wire on described cell phone mainboard, and the initiating terminal of the metal routing in described antenna for mobile phone is connected with the feed line on described cell phone mainboard.
Implement the embodiment of the present invention, following beneficial effect will be had:
After have employed above-mentioned antenna for mobile phone, cell phone rear cover and mobile phone, when carrying out tuning to the resonance frequency of the antenna on mobile phone, only need by regulating the parameter value being positioned at the tuning circuit of cell phone rear cover inner surface, get final product the tuning of the resonance frequency of twin aerial, compared with passing through the tuning manner of the position adjusting earth point in conventional art, tuning manner is easier, the easier resonance frequency by antenna for mobile phone is adjusted to best spectral range, thus the radiance of antenna for mobile phone and bandwidth are improved.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (7)
1. an antenna for mobile phone, it is characterized in that, comprise and be arranged on cell phone rear cover outer surface and be in main ground metal level and the radiation metal layer on same surface, be provided with the gap of filling insulating material between described main ground metal level and radiation metal layer, described main ground metal level is as the ground connection of described antenna for mobile phone; Described radiation metal layer is provided with distributing point, as the radiant body of described antenna for mobile phone; Described antenna for mobile phone also comprises the metal routing of the strip corresponding with the side of described radiation metal layer being arranged at described cell phone rear cover inner surface, the initiating terminal of described metal routing is connected with the feed line on cell phone mainboard with described, end end is connected with described distributing point, and the opposite side of described radiation metal layer is provided with earth point, described antenna for mobile phone also comprises the tuning circuit being arranged at described cell phone rear cover inner surface, the input of described tuning circuit is connected with described earth point, and the output of described tuning circuit is connected with the ground wire on cell phone mainboard.
2. antenna for mobile phone according to claim 1, it is characterized in that, described radiation metal layer comprises the first radiation metal layer and the second radiation metal layer, described first radiation metal layer is for being arranged at the strip region at the top of described cell phone rear cover outer surface, described second radiation metal layer is for being arranged at the strip region of the bottom of described cell phone rear cover outer surface, described main ground metal level is the boxed area at the middle part being arranged at described cell phone rear cover outer surface, clamped by described first radiation metal layer and described second radiation metal layer.
3. antenna for mobile phone according to claim 1, is characterized in that, the ratio of the surface area of described main ground metal level and described first radiation metal layer or described second radiation metal layer is greater than 10.
4. antenna for mobile phone according to claim 1, it is characterized in that, described cell phone rear cover also comprises insulation support plate, the surface that described main ground metal level and described radiation metal layer fit in described insulation support plate forms the outer surface of described cell phone rear cover, the insulating material of filling in the gap between described main ground metal level and radiation metal layer be described insulation support plate to described cell phone rear cover outer surface extend raised, the input of described tuning circuit is connected with described earth point through described insulation support plate, ground wire on described cell phone mainboard is connected with the output of described tuning circuit by metal thimble or shell fragment, described metal routing is positioned at the described cell phone rear cover inner surface position corresponding with the side of described radiation metal layer, and the initiating terminal position be connected with the feed line on cell phone mainboard is positioned at drift angle or the base angle of described cell phone rear cover, described earth point is arranged on drift angle or the base angle place of the opposite side of the described cell phone rear cover relative with the initiating terminal of metal routing.
5. antenna for mobile phone according to claim 4, is characterized in that, the length of described metal routing is 19mm to 21mm, and width is 4mm to 5mm.
6. antenna for mobile phone according to claim 1, is characterized in that, the width in the gap between described main ground metal level and radiation metal layer is 1mm to 4mm.
7. a mobile phone, comprise cell phone mainboard, described cell phone mainboard comprises ground wire and feed line, it is characterized in that, also comprise the antenna for mobile phone as described in claim 1 to 6, the output of the tuning circuit in described antenna for mobile phone is connected with the ground wire on described cell phone mainboard, and the initiating terminal of the metal routing in described antenna for mobile phone is connected with the feed line on described cell phone mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494253.3A CN105071023A (en) | 2015-08-12 | 2015-08-12 | Cell phone antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494253.3A CN105071023A (en) | 2015-08-12 | 2015-08-12 | Cell phone antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071023A true CN105071023A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510494253.3A Pending CN105071023A (en) | 2015-08-12 | 2015-08-12 | Cell phone antenna |
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| CN (1) | CN105071023A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811070A (en) * | 2016-04-29 | 2016-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Terminal back cover |
| WO2017113700A1 (en) * | 2015-12-29 | 2017-07-06 | 乐视控股（北京）有限公司 | Mobile terminal and gps antenna of mobile terminal |
| WO2017156906A1 (en) * | 2016-03-18 | 2017-09-21 | 广东欧珀移动通信有限公司 | Metal shell, antenna apparatus, and mobile terminal |
| WO2017167009A1 (en) * | 2016-03-30 | 2017-10-05 | 比亚迪股份有限公司 | Antenna and mobile terminal having same |
| WO2018205281A1 (en) * | 2017-05-12 | 2018-11-15 | 华为技术有限公司 | Metal casing and manufacturing method therefor, and electronic device |
| WO2020024683A1 (en) * | 2018-08-03 | 2020-02-06 | 瑞声声学科技(深圳)有限公司 | Antenna module and mobile terminal |
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| CN101595598A (en) * | 2006-11-15 | 2009-12-02 | 脉冲芬兰有限公司 | Internal multi-band antenna |
| US20090322625A1 (en) * | 2008-06-30 | 2009-12-31 | Kabushiki Kaisha Toshiba | Electronic apparatus |
| CN203071220U (en) * | 2012-01-04 | 2013-07-17 | 苹果公司 | An electronic device and an antenna |
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| CN101595598A (en) * | 2006-11-15 | 2009-12-02 | 脉冲芬兰有限公司 | Internal multi-band antenna |
| US20090322625A1 (en) * | 2008-06-30 | 2009-12-31 | Kabushiki Kaisha Toshiba | Electronic apparatus |
| CN203071220U (en) * | 2012-01-04 | 2013-07-17 | 苹果公司 | An electronic device and an antenna |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113700A1 (en) * | 2015-12-29 | 2017-07-06 | 乐视控股（北京）有限公司 | Mobile terminal and gps antenna of mobile terminal |
| WO2017156906A1 (en) * | 2016-03-18 | 2017-09-21 | 广东欧珀移动通信有限公司 | Metal shell, antenna apparatus, and mobile terminal |
| WO2017167009A1 (en) * | 2016-03-30 | 2017-10-05 | 比亚迪股份有限公司 | Antenna and mobile terminal having same |
| CN107293855A (en) * | 2016-03-30 | 2017-10-24 | 比亚迪股份有限公司 | Antenna and the mobile terminal with it |
| CN105811070A (en) * | 2016-04-29 | 2016-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Terminal back cover |
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| WO2018205281A1 (en) * | 2017-05-12 | 2018-11-15 | 华为技术有限公司 | Metal casing and manufacturing method therefor, and electronic device |
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| WO2020024683A1 (en) * | 2018-08-03 | 2020-02-06 | 瑞声声学科技(深圳)有限公司 | Antenna module and mobile terminal |
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Application publication date: 20151118 |