CN103457024A - Antenna device of mobile terminal and mobile terminal - Google Patents
Antenna device of mobile terminal and mobile terminal Download PDFInfo
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- CN103457024A CN103457024A CN2013103995445A CN201310399544A CN103457024A CN 103457024 A CN103457024 A CN 103457024A CN 2013103995445 A CN2013103995445 A CN 2013103995445A CN 201310399544 A CN201310399544 A CN 201310399544A CN 103457024 A CN103457024 A CN 103457024A
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Abstract
The invention discloses an antenna device of a mobile terminal and the mobile terminal. A metal frame is arranged on the lateral surface of the mobile terminal, the metal frame is cracked, a filling part formed by a non-conductive material or a non-conductive mixture fills the crack, a clear area is formed inside the mobile terminal, and the crack is communicated with the clear area. A section of metal frame surrounding the clear area serves as part of an antenna, is communicated with a tuning part of the antenna, and is connected with a signal feed point of the antenna through the tuning part of the antenna, and a ground feed point of the antenna is connected with a ground layer of a circuit board. The metal frame except for the part surrounding the clear area makes good contact with the ground layer of the circuit board. According to the antenna device of the mobile terminal and the mobile terminal, the metal frame is combined with the antenna, so that on the premise that the requirement for the metal sense appearance design of the mobile terminal is met, the tuning part of the antenna is designed in the clear area, the influence of the hand-hold effect is avoided, and good wireless radiation performance of the antenna is guaranteed.
Description
Technical field
The invention belongs to the mobile communication terminal technical field, specifically, the mobile terminal that relates to a kind of antenna assembly of mobile terminal and adopt described antenna assembly design.
Background technology
Antenna is the essential important component part of mobile communication terminal, and it transmits and receives an electromagnetic important wireless device while being mobile terminal and base station communication.When mobile terminal is launched, antenna is responsible for that the signal of telecommunication is converted into to electromagenetic wave radiation and is gone out; Can in time the electromagnetic wave received be converted into to the signal of telecommunication again, transfer to the circuit board of mobile terminal inside simultaneously.
The conventional thinking of Antenna Design is all generally to carry out on the basis based on large-area metal is effectively evaded, and needs to guarantee enough cabling areas and height.But, along with the listing gradually of LTE mobile phone, the kind of multi mode terminal is more and more, when number of antennas increases, the living space of each root antenna is more and more less, causes the cabling area of antenna to be difficult to guarantee.Simultaneously, along with the development of mobile phone technique and increasing of consumer demand, the profile of mobile phone is also towards the ultrathin future development.The profile of ultrathin causes the height deficiency of antenna, brings great puzzlement to the design of antenna.A lot of mobile phones are particularly arranged at present in order to pursue aesthetic property, often need on its housing, configure metalwork, these metalworks can cause the radiation space after the antenna metal is dodged narrow and small, metal finishing also can affect the radiation of antenna simultaneously, not only reduced antenna efficiency, also there will be the problems such as signal coupling, produce adverse influence to the radiance of antenna, what cause the traditional antenna designing requirement is difficult to all the more realization away from metal device and intense radiation zone, proposed stern challenge to the debugging of antenna, the design risk after the mobile phone volume production also increases thereupon.
As can be seen here, due to the change of mobile terminal Environment of Product Design, traditional Antenna Design can not meet harsh actual environment.Serious conflicting occurred with the design principle of antenna in the metal-like of mobile phone and ultra-thin profile, brings great puzzlement to the design of antenna for mobile phone.
Summary of the invention
The object of the present invention is to provide a kind of novel antenna assembly, by changing traditional mode of thinking, the metalwork that directly will be configured on mobile terminal is used as the part of antenna, can meet the design requirement of metal appearance thus, can guarantee the wireless performance that antenna is good again, reach compatible result.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of antenna assembly of mobile terminal, be provided with metal edge frame in the side of described mobile terminal, on described metal edge frame, cracks, and the place, gap is filled with the filling part formed by non-conductive material or non-conductive mixture; Inside at mobile terminal forms an empty regions, and described gap is communicated with described empty regions; Will be around one section metal edge frame of empty regions the part as antenna, be communicated with the tuning section of antenna, and the signal feed of tuning the connection antenna by antenna, the stratum of the ground feedback point connecting circuit board of antenna; Around the metal edge frame of part and the stratum good contact of circuit board beyond empty regions.
Further, the described metal edge frame around empty regions is divided into two sections by described gap, in order to improve the wireless performance of antenna, selects one section metal edge frame that length is large part as described antenna.
Preferably, the tuning section of described antenna is U-shaped curve or S type curve, is realizing to the tuning frequency range of antenna low frequency meeting the optimization requirement to high frequency bandwidth on light tuning basis.
Further, a tuning end of described antenna contacts with the metal edge frame as an antenna part by jockey, and the other end is connected with the signal feed on being laid in circuit board by the feed connecting portion.
Preferably, described feed connecting portion is L-type or linear pattern, to realize being communicated with of antenna tuning section and signal feed.
Further again, described jockey can be the arrangements of electric connections such as shell fragment or pogo-pin connector, and the position of closing on gap with the metal edge frame inboard contacts, and the cabling area of antenna is maximized.
For the high frequency bandwidth to antenna is realized further optimizing, also be connected with passive antenna branch described on presenting a little, as a parasitic branch that is connected to the main antenna on signal feed.
Further, the signal feed of described antenna and ground feedback point are laid in empty regions near in half zone in described gap, and the installation position of the signal feed of described antenna on circuit board presented a some side in the more close described gap of the installation position on circuit board with comparing, with the cabling of convenient antenna.
Preferably, described metal edge frame is laid around the periphery of mobile terminal, described gap is opened in top or the below on mobile terminal left side or right side, by the full wafer zone headroom of the full wafer zone of circuit board top or below and with the formation isolation of circuit board, form described empty regions.
Project organization based on said antenna device, the invention allows for a kind of mobile terminal that adopts described antenna assembly design, side at described mobile terminal is provided with metal edge frame, on described metal edge frame, crack, the place, gap is filled with the filling part formed by non-conductive material or non-conductive mixture; Inside at mobile terminal forms an empty regions, and described gap is communicated with described empty regions; Will be around one section metal edge frame of empty regions the part as antenna, be communicated with the tuning section of antenna, and the signal feed of tuning the connection antenna by antenna, the stratum of the ground feedback point connecting circuit board of antenna; Around the metal edge frame of part and the stratum good contact of circuit board beyond empty regions.
Compared with prior art, advantage of the present invention and good effect are: the present invention is directed to the mobile terminal that disposes metal edge frame and proposed a kind of special antenna assembly method for designing, by metal edge frame is processed especially, a part that makes it can be used as antenna participates in the global design of antenna assembly, to meet the designing requirement of antenna to the cabling area.Meanwhile, by on the internal circuit board of mobile terminal, forming empty regions, and in empty regions the tunable part of designing antenna, again by described tunable part is optimized, can realize thus the wideband covering performance of antenna, and can effectively avoid the impact of hand-held effect, and then guarantee that antenna has on the basis of good wireless radiation performance, realize the compatibility of antenna with large part metal, met the design requirement of mobile terminal to the metal-like outward appearance.
After reading by reference to the accompanying drawings the detailed description of embodiment of the present invention, it is clearer that the other features and advantages of the invention will become.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of metal edge frame in antenna assembly proposed by the invention;
Fig. 2 is the structural representation of a kind of embodiment that offers position and shape of empty regions;
Fig. 3 is the structural representation of a kind of embodiment of empty regions internal antenna tuning part and parasitic branch;
Fig. 4 is the fundamental diagram of Loop antenna.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The present invention is directed to and decorate the mobile terminal that metal edge frame is arranged, proposed a kind of structural design of antenna assembly.Due to the existence of metal edge frame, cause adopting the antenna of routine techniques design, its radiance becomes very poor, almost can't work.In order to evade the impact of metal edge frame on antenna performance, the present invention at first to the metal edge frame of mobile terminal cracked, the special processing such as local ground connection, the part of metal edge frame is used as antenna, then in the reserved empty regions in the inside of mobile terminal, and design tuned antenna in empty regions, by the tunable part to antenna, be optimized, to realize the wideband covering performance of antenna.
The mobile phone of below take is example as described mobile terminal, and concrete structure design and the operation principle thereof of antenna assembly proposed by the invention are at length set forth.
Shown in Figure 1, on current a lot of mobile phone productses, for fashion and the aesthetics of pursuing outward appearance, often need to the Decorative frame 12 that one circle is made by metal material be installed in the side of mobile phone surrounding, to strengthen the metal-like of mobile phone.Because metal edge frame 12 can have a strong impact on the radiation of antenna, cause the reduction of aerial radiation power, therefore be designed with the mobile phone of metal edge frame 12, the radiance of its antenna just is difficult to guarantee.In order to improve the radiation efficiency of such mobile phone, to strengthen the transmit-receive intensity of its radiofrequency signal, the present embodiment is overturned the mentality of designing of traditional antenna, metal edge frame 12 is incorporated in the structural design of antenna for mobile phone, to strengthen the wireless performance of antenna.
Specifically, at first the present embodiment cracks on the metal edge frame 12 of mobile phone, forms gap 13, and metal edge frame 12 is disconnected at 13 places, described gap, shown in Figure 1.The described position of cracking is as the criterion with the installation position that closes on the interior of mobile phone antenna, preferably is opened in top or the lower position of mobile phone left surface, also or the top of mobile phone right flank or lower position.Be filled with the filling part formed by non-conductive material or non-conductive mixture in described gap 13, and the position corresponding with described gap 13 carried out the headroom processing and separated with the main of terminal on the circuit board of interior of mobile phone, form empty regions 11, for the laying of antenna tuning part and antenna feed point, shown in Figure 2.In the present embodiment, the paving copper master ground that refers to mobile phone PCB of described terminal, the i.e. whole stratum of circuit board mainly.
Consider the aesthetic property of cell phone appearance, the width operated by rotary motion in described gap 13, between 1 ~ 2mm, be take and is not more than 1mm as preferred.Be filled in filling part in described gap 13 can adopt PC glass, ABS, PC+ glass with and the non-metallic material such as composite material or non-conductive mixture make, the present embodiment does not specifically limit this.
Described empty regions 11 preferably is arranged on top or the below of circuit board, to occupy circuit board top or full wafer zone from left to right, below, be advisable, offering position and offering size as shown in Figure 2, tuning part as antenna reserves enough cabling space, meets the low frequency performance of antenna.Adopt this empty regions 11 laying modes, after movement, shell and the metal edge frame 12 of mobile phone are seated, described gap 13 is just over against described empty regions 11, and is communicated with described empty regions 11.So, by empty regions 11, just can be divided into two parts to metal edge frame 12: a part is the part around empty regions 11, for example 121 sections; The remainder 122 that another part is metal edge frame 12, loop circuit capable plate other zone except described empty regions.Good grounding is done in the remainder of described metal edge frame 12 122 and the main ground 21 of mobile phone, with the stratum of mobile phone PCB, fully contact connection.For the purpose of being described clearly, the following grounded part that the remainder of described metal edge frame 12 122 is referred to as to metal edge frame 12 of the present embodiment.
Due to metal edge frame 12 wherein a part around empty regions 11, therefore, a part that can be used as antenna is designed.Offer the difference of position according to gap 13 on metal edge frame 12, around the metal edge frame part of empty regions 11, likely only have one section (while as gap 13, being positioned at the edge of empty regions 11), for example 121 sections; Also likely occur two sections, by described gap 13, separated two section 121,123, shown in Figure 2.When the metal edge frame around empty regions 11 is divided into two section 121,123 the time, can be selected wherein one section part as antenna to participate in the global design of antenna by gap 13.
In the two sections metal edge frames 121,123 that separated by gap 13,121 sections whole end face or bottom surfaces around mobile phone, an end is close to described gap 13, the grounded part 122 of other end connection metal frame 12; And 123 sections be straightway, an end is close to described gap 13, and the other end connects the grounded part 122 of described metal edge frame 12.For the cabling area that increases antenna, and realize that the consideration of the wideband covering aspect of antenna, the present embodiment preferably adopt one section metal edge frame 121 that length is long part as antenna, carry out the specific design of antenna for mobile phone.
Lay around empty regions 11 due to 121 sections of metal edge frame, therefore can directly bring as antenna and use, connect signal feed and the ground feedback point of antenna, realize the transmission-receiving function to radiofrequency signal.But this Antenna Design mode, when staff touches gap 13, can produce larger impact to the impedance of antenna, causes the radiation efficiency of antenna to descend a lot.In order to address this problem, the present embodiment is in the tuning section of empty regions 11 interior further designing antennas, evade away from 13 position, gap (being the zone that staff is difficult for touching) with the sensitive part by antenna, and then guarantee that the property retention of whole antenna is good.
Specifically shown in Figure 3, interior signal feed 34 and the ground feedback point 35 that antenna is set of the empty regions 11 formed on circuit board, 121 sections of tuning the 31 connection metal frames of described signal feed 34 by antenna, preferably with 121 sections inboard next-door neighbour 13 positions, gap, contact electrical connection, to form the antenna pattern of Loop form.In the present embodiment, described tuning 31 is preferably designed to U-shaped curve or S type curve, to realize coupling.One end of described tuning 31 is connected with jockey 33, described jockey 33 can be shell fragment, pogo-pin(probe adapter) or other interconnection of conductors equipment, after metal edge frame 12 is seated, with the inboard close contact of 121 sections of metal edge frame; The other end connects signal feed 34, or is connected with described signal feed 34 by feed connecting portion 32, forms the antenna pattern in empty regions 11.
Adopt the designed antenna structure of the present embodiment, radiofrequency signal is from signal feed 34 feed-ins of antenna, interconnected via the feed connecting portion 32 of antenna, tuning 31, jockey 33 and metal edge frame 121 sections, and then be connected with the grounded part 122 of metal edge frame 12 via 121 sections of metal edge frame, realize interconnected with mobile phone master ground.This loop can be regarded a Loop antenna form as, and it can effectively cover GSM850 and GSM900 frequency range that current mobile terminal is commonly used, and simultaneously, this loop also has resonance at high band.The fundamental diagram of Loop antenna is shown in Figure 4, and wherein, 43,44 are respectively signal feed and the ground feedback point of Loop antenna, and the loop be connected between signal feed 43 and ground feedback point 44 is antenna pattern portion, and ground feedback point 44 connects the main ground 41 of mobile terminal.
The present embodiment is designed to U-shaped or S type curve coupling unit by tuning 31 of antenna, this part is for the optimization particular importance of antenna high band bandwidth, not only can realize easily tuning to the low-frequency resonant frequency range, and also very useful for the optimization of high frequency bandwidth, can realize the wideband covering performance of antenna.In addition, just because of this existence of tuning 31, when guarantee touches gap 13 when staff, the property retention of whole antenna is good.Trace it to its cause and be: due to the gap 13 of the signal feed 34 from antenna to metal edge frame 12, antenna need to be through tuning 31, by this part, the responsive part of antenna has been evaded to the position (being the zone that staff is difficult for touching) away from gap, therefore when staff touches 13 place, gap, the resonance of antenna not only can not worsen, contrary, resonance has become better in fact on the contrary.Just effectively guaranteed thus when staff touches 13 place, gap of metal edge frame 12, antenna still has good resonance characteristic, the radiation efficiency of antenna can not descend too obviously, still, in controlled decline scope, guarantees that the user has good experience all the time.
In the present embodiment, described feed connecting portion 32 is only used as tuning 31 linkage section with signal feed 34 of antenna, can be designed to linear pattern or L-type, to facilitate tuning 31, with signal feed 34, is connected to principle.Antenna pattern shown in Fig. 3, be designed to U-shapedly by tuning 31, and, for the endpoint location of tuning 31 and the installation position of signal feed 34, feed connecting portion 32 is designed to L-type, to realize being connected of antenna tuning section 31 and signal feed 34.
In order further to optimize the high frequency bandwidth of antenna, the present embodiment also is designed with passive antenna branch 36 in described empty regions 11, shown in Figure 3, connects the ground feedback point 35 of antenna.Present a little 35 is connected with the main ground 21 of mobile phone describedly.Described passive antenna 36, as the parasitic branch of antenna, can be designed to the circulating type pattern of arbitrary shape, and two ends are all presented a little 35 and are connected with described.Because the coupling between tuning 31 of antenna and passive antenna 36 is very obvious for the optimization of high frequency bandwidth, therefore, can pass through design parasitic antenna 36, the high frequency bandwidth of antenna for mobile phone is optimized.
In addition, for the signal feed 34 of antenna and the relative position relation of ground feedback point 35, the side that the signal feed 34 of take is laid near gap 13 is principle, with tuning 31 and passive antenna branch 36 cablings of convenient antenna, shown in Figure 3.That is, the installation position of signal feed 34 on circuit board of described antenna presented some the side that 35 installation positions on circuit board should more close described gap 13 with comparing.For example, the signal feed of antenna 34 and ground feedback point 35 are laid in the same horizontal line, if the gap 13 of metal edge frame 12 is opened in the left side of mobile phone, signal feed 34 should be presented a little 35 left side with being positioned at; If the gap 13 of metal edge frame 12 is opened in the right side of mobile phone, signal feed 34 should be presented a little 35 right side with being positioned at, to optimize antenna performance.
For the antenna part be laid in empty regions 11, no matter tuning 31 of antenna, feed connecting portion 32 or passive antenna 36 parts, can design on casing, also can be made in above support, certainly, can adopt stamping technology directly to be embedded in casing, the present embodiment does not specifically limit this yet.
The present embodiment is by being combined the metal edge frame on mobile phone with antenna for mobile phone, realized the good compatibility between the two, the position of cracking by the reasonably optimizing metal edge frame, the placement position of distributing point and the optimal design of tuning part, thereby effectively avoided the impact of hand-held effect, guaranteed the radiation efficiency of antenna.The antenna device arrangement design of the present embodiment, solved conflicting of producing between metal-like that current high-end mobile phone pursues and ultra-thin profile and Antenna Design principle, can be widely used in mobile phone, panel computer etc. has in the mobile terminal product of specific (special) requirements complete machine thickness and metal-like outward appearance, to meet the designing requirement of this series products to the fashion outward appearance.
Certainly; the above is only a kind of preferred implementation of the present invention, for those skilled in the art, and under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the antenna assembly of a mobile terminal, be provided with metal edge frame in the side of described mobile terminal, it is characterized in that: on described metal edge frame, crack, the place, gap is filled with the filling part formed by non-conductive material or non-conductive mixture; Inside at mobile terminal forms an empty regions, and described gap is communicated with described empty regions; Will be around one section metal edge frame of empty regions the part as antenna, be communicated with the tuning section of antenna, and the signal feed of tuning the connection antenna by antenna, the stratum of the ground feedback point connecting circuit board of antenna; Around the metal edge frame of part and the stratum good contact of circuit board beyond empty regions.
2. the antenna assembly of mobile terminal according to claim 1, it is characterized in that: the described metal edge frame around empty regions is divided into two sections by described gap, selects one section metal edge frame that length is large part as described antenna.
3. the antenna assembly of mobile terminal according to claim 2, it is characterized in that: the tuning section of described antenna is U-shaped curve or S type curve.
4. the antenna assembly of mobile terminal according to claim 3, it is characterized in that: a tuning end of described antenna contacts with the metal edge frame as an antenna part by jockey, and the other end is connected with the signal feed on being laid in circuit board by the feed connecting portion.
5. the antenna assembly of mobile terminal according to claim 4, it is characterized in that: described feed connecting portion is L-type or linear pattern.
6. the antenna assembly of mobile terminal according to claim 4, it is characterized in that: described jockey is shell fragment or pogo-pin connector, and the position of closing on gap with the metal edge frame inboard contacts.
7. according to the antenna assembly of the described mobile terminal of any one in claim 1 to 6, it is characterized in that: described, be connected with passive antenna branch on presenting a little.
8. according to the antenna assembly of the described mobile terminal of any one in claim 1 to 6, it is characterized in that: the signal feed of described antenna and ground feedback point are laid in empty regions near in half zone in described gap, and the installation position of the signal feed of described antenna on circuit board presented a some side in the more close described gap of the installation position on circuit board with comparing.
9. according to the antenna assembly of the described mobile terminal of any one in claim 1 to 6, it is characterized in that: described metal edge frame is laid around the periphery of mobile terminal, described gap is opened in top or the below on mobile terminal left side or right side, by the full wafer of the full wafer zone of circuit board top or below zone headroom and with the formation isolation of circuit board, form described empty regions.
10. a mobile terminal, is characterized in that: be provided with the antenna assembly as the described mobile terminal of any one claim in claim 1 to 9.
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| CN201310399544.5A CN103457024B (en) | 2013-09-05 | 2013-09-05 | A kind of antenna assembly of mobile terminal and mobile terminal |
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| CN201310399544.5A CN103457024B (en) | 2013-09-05 | 2013-09-05 | A kind of antenna assembly of mobile terminal and mobile terminal |
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| CN107770992A (en) * | 2017-10-18 | 2018-03-06 | 维沃移动通信有限公司 | A kind of metal back cover processing method, metal back cover and mobile terminal |
| CN107770992B (en) * | 2017-10-18 | 2019-12-06 | 维沃移动通信有限公司 | Metal rear cover machining method, metal rear cover and mobile terminal |
| CN108649335A (en) * | 2018-05-15 | 2018-10-12 | Oppo广东移动通信有限公司 | Antenna module, electronic equipment and antenna switching method |
| CN108808221A (en) * | 2018-06-19 | 2018-11-13 | 深圳市万普拉斯科技有限公司 | antenna system and mobile terminal |
| CN112534641A (en) * | 2018-09-07 | 2021-03-19 | 华为技术有限公司 | Antenna and mobile terminal |
| CN109904595A (en) * | 2019-02-27 | 2019-06-18 | 深圳市信维通信股份有限公司 | A kind of metal frame car antenna |
| CN110729550A (en) * | 2019-09-02 | 2020-01-24 | 深圳市和盈互联科技有限公司 | Antenna device and intelligent watch |
| CN113555675A (en) * | 2020-04-24 | 2021-10-26 | 深圳市万普拉斯科技有限公司 | Multimode broadband antenna and mobile terminal |
| CN113555675B (en) * | 2020-04-24 | 2023-11-10 | 深圳市万普拉斯科技有限公司 | Multimode broadband antenna and mobile terminal |
| CN111816985A (en) * | 2020-06-10 | 2020-10-23 | 昆山睿翔讯通通信技术有限公司 | Antenna system suitable for mobile terminal in metal middle frame form and mobile terminal |
| CN111816985B (en) * | 2020-06-10 | 2022-04-26 | 昆山睿翔讯通通信技术有限公司 | Antenna system suitable for mobile terminal in metal middle frame form and mobile terminal |
| CN113314845A (en) * | 2021-05-20 | 2021-08-27 | Tcl通讯（宁波）有限公司 | Multi-frequency-point antenna and mobile terminal |
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| CN103457024B (en) | 2015-11-18 |
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