CN102496773B - Method capable of improving efficiency of mobile communication antenna and mobile communication terminal - Google Patents

Method capable of improving efficiency of mobile communication antenna and mobile communication terminal Download PDF

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CN102496773B
CN102496773B CN201110337917.7A CN201110337917A CN102496773B CN 102496773 B CN102496773 B CN 102496773B CN 201110337917 A CN201110337917 A CN 201110337917A CN 102496773 B CN102496773 B CN 102496773B
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mobile communication
antenna
communication antenna
metal
metal device
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CN102496773A (en
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褚宏资
王国涛
张波
高一伦
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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Abstract

The invention discloses a method capable of improving the efficiency of a mobile communication antenna and a mobile communication terminal. In the invention, a metal device is laid at the periphery of the mobile communication antenna, and the wavelength coverage of a radio signal received by the mobile communication antenna is represented by Lambada; if the metal devices laid at the periphery of the mobile communication antenna form a closed circuit, the circumference of the closed circuit is changed so as to avoid the range of Lambada, a half of the Lambada, or a quarter of the Lambada; if the metal device laid at the periphery of the mobile communication antenna is an insulated metal device, the size of the equivalent antenna formed by the insulated metal device is changed so as to avoid the above range; and under the situation that the radiation space of the mobile communication antenna is not affected, the mutual coupling between the mobile communication antenna and the peripheral metal device is reduced, the wastage resistance of the mobile communication antenna is reduced, the radiation efficiency of the mobile communication antenna is improved, and the receiving and emitting performances of the mobile communication terminal are optimized.

Description

A kind of method and mobile communication terminal that improves mobile communication antenna efficiency
Technical field
The invention belongs to mobile communication technology field, specifically, relate to a kind of for improving the processing method that the radiation efficiency of mobile communication antenna proposes and the mobile communication terminal that adopts described method design.
Background technology
Since in January, 2010, apple issue iPAD starts, and this large-screen of panel computer, multi-functional, the mobile interconnected hand-held device of amusement are accepted by market gradually, and development also finally becomes the new trend of current amusement equipment.Compare with two kinds of main flow mobile devices of mobile phone and notebook computer, panel computer has most of function of traditional computer, support handwriting input, support to show output, possess data processing, graphics capability, and volume weight is less, mobility is strong, conveniently carry, can long-time hand-held use.Panel computer has the wireless network modules such as Edge/3G/4G/WiFi, can in covering the region of above-mentioned signal, carry out wireless network connection, the internet function such as realize that web page browsing, interaction, download are uploaded.
Along with the fast development of panel computer technology, the profile of product is also gradually to lightening future development, and in order to pursue high-quality outward appearance and sense of touch, metal shell is widely used.The large area of metal shell is used bringing the novel impression of outward appearance to consumer when, has brought very large puzzlement also to the Antenna Design of panel computer.Because antenna will be realized its direction, efficiency and gain, must there be certain reference horizontal plane of manufacturing length, antenna height, cabling area and metal to dodge, these all will need emphasis to consider when panel computer designs.And, along with the concentrated use of wireless module in panel computer such as TD/GSM, EVDO, WCDMA, EDGE, how to realize multiband aerial and deposit, and guarantee wireless receiving and the emitting performance of antenna, improve radiation bandwidth and the efficiency of antenna, just become each panel computer manufacturer at present and be badly in need of the subject matter solving.
Summary of the invention
The present invention is directed to the antenna environment of current mobile communication terminal inside, a kind of method that improves mobile communication antenna efficiency has been proposed, by the size of the formed closed circuit of change antenna periphery metal device or the size of the isolated metal device of change, improve the radiation bandwidth of antenna, improve the radiation efficiency of antenna, and finally reach the designing requirement that meets antenna performance.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Improve a method for mobile communication antenna efficiency, in the surrounding of described mobile communication antenna, be laid with metal device, the wave-length coverage of the radio signal that described mobile communication antenna is received represents with λ;
If be laid in described mobile communication antenna metal device around, form closed circuit, and the girth of this closed circuit fall into described λ,
Figure BDA0000104001580000021
or scope in, change the girth of described closed circuit, make this girth avoid described λ,
Figure BDA0000104001580000023
with
Figure BDA0000104001580000024
scope;
If be laid in described mobile communication antenna metal device around for isolated metal device, and the size of this isolated metal device fall into described λ,
Figure BDA0000104001580000025
or scope in, change the size that described isolated metal device forms equivalent aerial, make this size avoid described λ,
Figure BDA0000104001580000027
with
Figure BDA0000104001580000028
scope.
Wherein, when the metal device around being laid in described mobile communication antenna forms closed circuit, adopt metal connecting piece to be connected in described closed circuit, closed circuit is divided into two parts, a part is near mobile communication antenna, a part is away from mobile communication antenna, and make near the girth of the closed circuit of mobile communication antenna avoid described λ,
Figure BDA0000104001580000029
with
Figure BDA00001040015800000210
scope.
Further, described metal device is metal back cover or metal edge frame and the display screen metal fixed support in mobile communication product, and described display screen metal fixed support and metal back cover or metal edge frame form closed circuit around at mobile communication antenna.
When being laid in described mobile communication antenna metal device around for isolated metal device, at described isolated metal device with connection metal connector systematically, to change the size of isolated metal device formation equivalent aerial, and make this size avoid described λ,
Figure BDA00001040015800000211
with
Figure BDA00001040015800000212
scope.
Further, described isolated metal device consists of loud speaker and the connected lead-in wire of mobile communication product inside, described metal connecting piece be connected to the metal shell of loud speaker and systematically between.
Certainly, described isolated metal device can be also the earth lead of the inner connecting motor of mobile communication product or receiver, on the circuit board of mobile communication product inside, select in addition a system ground wire, and be communicated with described earth lead by metal connecting piece, to change described earth lead, form the size of equivalent aerial, and make this size avoid described λ,
Figure BDA0000104001580000031
with
Figure BDA0000104001580000032
scope.
As another kind of design, when being laid in described mobile communication antenna metal device around for isolated metal device, connection metal connector on described isolated metal device, and make described isolated metal device and metal connecting piece form a closed circuit, and the girth of described closed circuit avoid described λ,
Figure BDA0000104001580000033
with
Figure BDA0000104001580000034
scope.
Preferably, described metal connecting piece can adopt conductive fabric or metal clips or other to have the medium of conducting function.
Method based on above-mentioned raising mobile communication antenna efficiency, the present invention also provides a kind of mobile communication terminal that adopts described method design, comprise mobile communication antenna, surrounding at described mobile communication antenna is laid with metal device, and the wave-length coverage of the radio signal that described mobile communication antenna is received represents with λ;
If be laid in described mobile communication antenna metal device around, form closed circuit, and the girth of this closed circuit fall into described λ, or scope in, change the girth of described closed circuit, make this girth avoid described λ,
Figure BDA0000104001580000037
with
Figure BDA0000104001580000038
scope;
If be laid in described mobile communication antenna metal device around for isolated metal device, and the size of this isolated metal device fall into described λ,
Figure BDA0000104001580000039
or
Figure BDA00001040015800000310
scope in, change the size that described isolated metal device forms equivalent aerial, make this size avoid described λ,
Figure BDA00001040015800000311
with
Figure BDA00001040015800000312
scope.
Further, in described mobile communication terminal inside, be also provided with Bluetooth antenna or WiFi antenna, the distance between described Bluetooth antenna or WiFi antenna and mobile communication antenna is set, make two be less than-20dB of the isolation between antenna.
Preferably, described mobile communication terminal can be panel computer or mobile phone etc.
Compared with prior art, advantage of the present invention and good effect are: the present invention is directed to the metal device that mobile communication antenna is laid around, adopt the method for the girth of the formed closed circuit of change metal device or the length of isolated metal device, in the situation that not affecting mobile communication antenna radiation space, reduced the mutual coupling of mobile communication antenna and periphery metal device, and then reduced the loss resistance of mobile communication antenna, improve the radiation efficiency of mobile communication antenna, optimized reception and the emitting performance of mobile communication terminal.
Accompanying drawing explanation
Fig. 1 is the structural representation that changes a kind of embodiment of the formed closed circuit size of mobile communication antenna periphery metal device;
Fig. 2 does not adopt the standing-wave ratio oscillogram of mobile communication antenna before of corrective measure shown in Fig. 1;
Fig. 3 is the standing-wave ratio oscillogram that adopts shown in Fig. 1 mobile communication antenna after corrective measure and when the girth of metallic closed loop is 280mm;
Fig. 4 is the standing-wave ratio oscillogram that adopts shown in Fig. 1 mobile communication antenna after corrective measure and when the girth of metallic closed loop is 310mm;
Fig. 5 is the structural representation that changes a kind of embodiment of the isolated metal device length of mobile communication antenna periphery.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Antenna is the necessary and important device in mobile radio system, has played the function of power conversion, is tie and the bridge that space outerpace electromagnetic wave/electromagnetic field and internal system circuit contact.At present, the mobile communication terminals such as panel computer and mobile phone are limited to reserved antenna space, and the normal antenna using mostly is PIFA antenna (being planar inverted-F antenna) or unipole antenna, and these two kinds of antennas are all Flat small sized antennas.Because the surrounding at antenna is often laid with metal device, such as the metallic support of the metal edge frame of panel computer, metal back cover, installation display screen etc., these metal devices can absorb the electromagnetic wave in space, thereby cause the radiation efficiency of antenna to decline.Meanwhile, these metal devices also easily cause the impedance mismatch problem of antenna, thereby cause portion of energy to be reflected back toward circuit system, have also further reduced thus reception and the emitting performance of antenna.
An important indicator weighing antenna performance is exactly efficiency, and for the radiation efficiency of isolated antenna, it is defined as the ratio of radiant power and the input power of antenna:
∂ = P r P in = I in 2 R r / 2 I in 2 ( R r + R ohmic ) / 2 = R r ( R r + R oh min ) .
Wherein, R r+ R ohmicinput resistance R for antenna in; R rfor calculating the radiation resistance of aerial radiation power; R ohmicfor the Ohmic resistance of loss on antenna, i.e. loss resistance.And the input impedance of antenna is Z in=R in+ jX in, X infor the reactive component of antenna, the existence of reactive component can reduce antenna extraction to signal power from feeder line, and therefore, must make reactive component is zero as far as possible, and the input impedance that namely should make as far as possible antenna is pure resistance.
In the actual application environment of antenna, when near antenna, placement has the object of metal material, it has not only dwindled the actual space taking of antenna, causes the decline of bandwidth; And the metal device that reaches certain size also can with antenna generation mutual coupling, absorb the radiant power of antenna, increase the loss resistance of antenna, cause the reduction of radiation efficiency.Therefore, at antenna, lay the sharply deterioration that metal device can directly cause antenna performance around.
Can be with from the defined formula of above-mentioned radiation efficiency: the approach that improves radiation efficiency is nothing more than from improving radiation resistance R rwith the resistance R that reduces the wastage ohmicstart with.For antenna metal device around, if only according to current conventional way, carry out simple grounding, although can reduce the interference effect for antenna, but also reduced the radiation space of antenna, caused the bandwidth of antenna not enough, cannot realize even at all.
The present embodiment is for improving the radiation efficiency of antenna, from changing antenna, around the size of the formed closed circuit of metal device or the length scale of isolated metal device are started with in proposition, do not affecting under the prerequisite in aerial radiation space, reduce the mutual coupling degree of antenna and periphery metal device, and then reduce the loss resistance R of antenna ohmic, reach the purpose of design that improves antenna radiation efficiency.
It is example that the present embodiment be take the mobile communication antenna of panel computer inside, the metal environment of mobile communication antenna periphery is changed, to improve the radiation efficiency of mobile communication antenna.
In the Antenna Design of mobile communication terminal, the antenna of often using has the small size antennas such as the monopole antenna of loop aerial that dipole antenna, folded dipole antenna, girth and wavelength are close, 1/4 wavelength and PIFA.When surrounding's metal length of the selected antenna of mobile communication terminal reaches the close closed circuit of radio signal wavelength that the theoretical size of such antenna or formation and described antenna will receive, will form a strong mutual coupling to described antenna, make the power of this aerial radiation have major part via these metal devices shuntings, cause the reduction of antenna radiation efficiency.The measure of the raising antenna radiation efficiency that the present embodiment proposes is exactly to avoid antenna metal around to form the size that causes forming resonance on the working frequency range of antenna.
First, for the metal device of mobile communication antenna periphery, form the situation of closed circuit, set forth the concrete measure that improves antenna radiation efficiency.
Shown in Figure 1, on current panel computer product, mostly select metal back cover 1 or metal edge frame, to improve overall aesthetics and the hand of product, touch texture.In panel computer inside, for being installed, the display screen metal fixed support 2 of LCD display conventionally need to be screwed in metal back cover 1, form thus a metallic closed loop, and mobile communication antenna 3 exactly needs to be laid in described metallic closed loop or close on the position of described metallic closed loop.If the girth of this metallic closed loop just falls in the wave-length coverage of the radio signal that described mobile communication antenna 3 will receive and dispatch (the present embodiment represents the wave-length coverage of the radio signal that described mobile communication antenna 3 will be received and dispatched with λ), or in the scope of 1/2 wavelength or 1/4 wavelength, can form a strong mutual coupling with mobile communication antenna 3, thereby have a strong impact on the radiation efficiency of mobile communication antenna 3.
In order to improve the radiation efficiency of mobile communication antenna 3, the present embodiment is changed the size of described metallic closed loop, make its girth avoid described λ,
Figure BDA0000104001580000061
with
Figure BDA0000104001580000062
scope, thereby avoid this metallic closed loop to form resonance on the working frequency range of mobile communication antenna 3, reduce its impact on mobile communication antenna 3 transmitting-receiving performances, realize the purpose of design that improves antenna 3 radiation efficiencies.
As a kind of preferred specific embodiments, can in the formed closed circuit of mobile communication antenna 3 periphery metal device, connect a metal connecting piece 4, as shown in Figure 1, metallic closed loop is divided into A, B two parts closed circuit.Wherein, A is partly looped around mobile communication antenna 3 peripheries or is positioned at the position of closing on mobile communication antenna 3, and B part is away from mobile communication antenna 3.The girth of restriction A part closed circuit is avoided the wave-length coverage of the radio signal that described mobile communication antenna 3 will receive and dispatch, and 1/2 wavelength and 1/4 wave-length coverage, thereby improves the radiation efficiency of mobile communication antenna 3.
In order to verify the validity of the improvement project that the present embodiment proposes, the present embodiment be take TD/GSM dual-band antenna and is carried out analytic explanation as example.
Table 1 is two working frequency range and the corresponding wavelength dimension of TD/GSM dual-band antenna.
Figure BDA0000104001580000071
Table 1
In order to take into account two kinds of frequency ranges, when there is metallic closed loop around in TD/GSM antenna, for fear of forming loop aerial or the half-wave folded dipole antenna of resonance in TD/GSM working frequency range, the perimeter L of its closed circuit should meet: do not fall within the scope of wavelength dimension corresponding to designed frequency range, not in the scope of 313mm～341mm, 148mm～170mm, 74mm～85mm and 37mm～40mm.In the present embodiment, mobile communication antenna 3 adopts the small size antenna of 1/4 wavelength, the metal back cover 1 of antenna below and display screen metal fixed support 2 form a closed loop, and the girth of closed circuit is 320mm, have reached the wavelength that forms the GSM900 frequency range of loop antenna.
In order to realize the requirement of antenna 3 efficiency to space size, the present embodiment adopts metal connecting piece 4 to cut apart described closed circuit, make to be looped around after cutting apart the girth of closed circuit A of antenna 3 peripheries in the interval of 170mm < L < 313mm, avoid the corresponding wavelength dimension scope of antenna band, resonance frequency staggers.
In order to verify this method, the present embodiment Adoption Network analyzer respectively test processes moves forward and backward the standing-wave ratio (VSWR) of communication antenna 3, shown in Fig. 2-Fig. 4.Wherein, Fig. 2 is the standing-wave ratio of the antenna 3 before processing; Fig. 3 is the standing-wave ratio of antenna 3 while the girth of metallic closed loop being changed to 280mm after processing; Fig. 4 is the standing-wave ratio of antenna 3 while the girth of metallic closed loop being changed to 310mm after processing.From Fig. 2-Fig. 4, can clearly be seen that: the communication products adopting the measure of the change antenna periphery metallic closed loop size that the present embodiment proposes to process, the standing-wave ratio of its mobile communication antenna 3 is much smaller than the standing-wave ratio before processing, and antenna performance is obviously improved.And the girth of described metallic closed loop is changed to the treatment measures of 310mm, because 310mm approaches GSM900 antenna at the wavelength (313mm) of 880MHz frequency, thereby it compares the treatment measures that the girth of described metallic closed loop changed to 280mm, it is large that the standing-wave ratio of its antenna 3 obviously becomes.Therefore, in the process of change antenna periphery metallic closed loop size, should make its girth away from the corresponding range of wavelengths lambda of antenna working frequency range as far as possible and
Figure BDA0000104001580000081
with scope, to obtaining higher antenna radiation efficiency.
By test data, can draw to draw a conclusion: the metallic closed loop that changes antenna periphery can effectively change the standing-wave ratio of antenna, and then reduce the reflection loss of signal, promote the radiation efficiency of antenna.
For there is the situation of the isolated metal device that does not form closed circuit around at mobile communication antenna 3, if the length of isolated metal device falls into the range of wavelengths lambda of 3 transmitting/receiving wireless signals of telecommunication of antenna, or
Figure BDA0000104001580000083
scope in, easily form monopole antenna, described mobile communication antenna 3 is formed to mutual coupling.
The loud speaker 5 that the present embodiment be take in panel computer describes as example, shown in Figure 5.In the design of panel computer, the loud speaker 5 with metal shell often needs to be laid in the position near mobile communication antenna 3, described loud speaker 5 approximates greatly 40mm together with the total length of the lead-in wire 6 with its welding, just fallen into 1/4 wave-length coverage of TD-SCDMA signal, thereby easily on the working frequency range of TD-SCDMA, there is resonance with TD/GSM antenna, the radiation efficiency of reduction TD/GSM antenna.In order to address this problem, the present embodiment proposes to change the design of described isolated metal device equivalent aerial length, concrete measure can adopt metal connecting piece 7 be connected to described isolated metal device and systematically between, for example be connected to the metal shell of loud speaker 5 and systematically between, thereby change the length H of the equivalent aerial of its formation, and make this length H avoid the range of wavelengths lambda of antenna, and
Figure BDA0000104001580000085
with
Figure BDA0000104001580000086
scope, and then the resonance frequency that staggers, reach the object that improves antenna radiation efficiency.
For mobile communication products such as panel computer, mobile phones, described isolated metal device is likely also the earth lead of connecting motor or receiver on mainboard.Now, can on interiors of products mainboard, select in addition a system ground wire, adopt metal connecting piece 7 to be connected between this system ground wire and earth lead, to change the size of the formed equivalent aerial of described earth lead, and make this size avoid described λ,
Figure BDA0000104001580000087
with
Figure BDA0000104001580000088
scope, and then reduce the mutual coupling degree of itself and mobile communication antenna 3, reduce the wastage.
Certainly, for isolated metal device, can also adopt connection metal connector on isolated metal device, and make a closed circuit of described isolated metal device and metal connecting piece formation, and the girth that limits described closed circuit avoid described λ, with
Figure BDA0000104001580000092
scope, also can reach thus the resonance point of the antenna band that staggers, avoid being coupled, affecting with antenna the problem of antenna radiation efficiency.
In the present embodiment, described metal connecting piece 7 can adopt the multiple media with conducting function such as conductive fabric or metal clips, and the present embodiment does not specifically limit this.
The above-mentioned TD/GSM antenna of still take describes as example, after TD/GSM antenna being taked to above-mentioned two kinds for the treatment of measures, (change the formed metallic closed loop of TD/GSM antenna periphery and be of a size of 280mm, the equivalent aerial length of the isolated metal device of change), the standing-wave ratio of its TD/GSM antenna significantly reduces before comparing and not dealing with, and ginseng is shown in Table 2.
Figure BDA0000104001580000093
Table 2
Table 3 for before using darkroom test processes and with two kinds for the treatment of measures that adopt the present embodiment to propose after the isotropically radiated power (TRP) of TD/GSM antenna and the test result table of comparisons of efficiency.
Figure BDA0000104001580000094
Table 3
By analysis and test result, can find out: after changing the size of antenna periphery metallic closed loop, the efficiency of GSM900 frequency range is greatly improved; After the metal shell of loud speaker is carried out to grounding, the radiation efficiency of TD-SCDMA is also much better than the state before processing.The method of the raising mobile communication antenna efficiency that as can be seen here, the present embodiment proposes is effective and is easy to realize.
In addition, for also need to arrange the situation of the other types antennas such as bluetooth or WiFi in mobile communication product, in order to improve the performance of mobile communication antenna, the present embodiment adopts the design away from mobile communication antenna by bluetooth or WiFi antenna, make two be less than-20dB of the isolation between antenna, to reduce bluetooth or the impact of WiFi antenna on mobile communication antenna performance.
Certainly; the above is only a kind of preferred implementation of the present invention; it should be noted that; for those skilled in the art; 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 (9)

1. a method that improves mobile communication antenna efficiency, is characterized in that: the surrounding at described mobile communication antenna is laid with metal device, and the wave-length coverage of the radio signal that described mobile communication antenna is received is used
Figure 2011103379177100001DEST_PATH_IMAGE001
represent;
If be laid in described mobile communication antenna metal device around, form closed circuit, and described in the girth of this closed circuit falls into ,
Figure 422903DEST_PATH_IMAGE002
or
Figure 2011103379177100001DEST_PATH_IMAGE003
scope in, change the girth of described closed circuit, make described in this girth avoids
Figure 650753DEST_PATH_IMAGE001
,
Figure 655618DEST_PATH_IMAGE002
with
Figure 968919DEST_PATH_IMAGE003
scope; When the metal device around being laid in described mobile communication antenna forms closed circuit, adopt metal connecting piece to be connected in described closed circuit, closed circuit is divided into two parts, a part is near mobile communication antenna, a part is away from mobile communication antenna, and described in making to avoid near the girth of the closed circuit of mobile communication antenna ,
Figure 737472DEST_PATH_IMAGE002
with
Figure 663970DEST_PATH_IMAGE003
scope
If be laid in described mobile communication antenna metal device around for isolated metal device, and described in the size of this isolated metal device falls into ,
Figure 688875DEST_PATH_IMAGE002
or
Figure 812689DEST_PATH_IMAGE003
scope in, change the size that described isolated metal device forms equivalent aerial, make described in this size avoids
Figure 898370DEST_PATH_IMAGE001
,
Figure 373214DEST_PATH_IMAGE002
with
Figure 948683DEST_PATH_IMAGE003
scope.
2. the method for raising mobile communication antenna efficiency according to claim 1, it is characterized in that: described metal device is metal back cover or metal edge frame and the display screen metal fixed support in mobile communication product, described display screen metal fixed support and metal back cover or metal edge frame form closed circuit around at mobile communication antenna.
3. the method for raising mobile communication antenna efficiency according to claim 1, it is characterized in that: when being laid in described mobile communication antenna metal device around for isolated metal device, connection metal connector at described isolated metal device and systematically, to change isolated metal device, form the size of equivalent aerial, and make described in this size avoids ,
Figure 523201DEST_PATH_IMAGE002
with
Figure 236073DEST_PATH_IMAGE003
scope.
4. the method for raising mobile communication antenna efficiency according to claim 3, it is characterized in that: described isolated metal device consists of loud speaker and the connected lead-in wire of mobile communication product inside, described metal connecting piece be connected to the metal shell of loud speaker and systematically between.
5. the method for raising mobile communication antenna efficiency according to claim 3, it is characterized in that: described isolated metal device is the earth lead of the inner connecting motor of mobile communication product or receiver, on the circuit board of mobile communication product inside, select in addition a system ground wire, and be communicated with described earth lead by metal connecting piece, to change described earth lead, form the size of equivalent aerial, and make described in this size avoids
Figure 864501DEST_PATH_IMAGE001
,
Figure 979218DEST_PATH_IMAGE002
with
Figure 402109DEST_PATH_IMAGE003
scope.
6. the method for raising mobile communication antenna efficiency according to claim 1, it is characterized in that: when being laid in described mobile communication antenna metal device around for isolated metal device, connection metal connector on described isolated metal device, and make described isolated metal device and metal connecting piece form a closed circuit, and described in the girth of described closed circuit avoids
Figure 336698DEST_PATH_IMAGE001
,
Figure 34396DEST_PATH_IMAGE002
with
Figure 738041DEST_PATH_IMAGE003
scope.
7. according to the method for the raising mobile communication antenna efficiency described in any one in claim 2 to 6, it is characterized in that: described metal connecting piece is conductive fabric or metal clips.
8. a mobile communication terminal, is characterized in that: the method that adopts the raising mobile communication antenna efficiency as described in any one claim in claim 1 to 7.
9. mobile communication terminal according to claim 8, it is characterized in that: in described mobile communication terminal inside, be also provided with Bluetooth antenna or WiFi antenna, distance between described Bluetooth antenna or WiFi antenna and mobile communication antenna is set, makes two be less than-20dB of the isolation between antenna.
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CN107483669B (en) * 2017-08-31 2020-07-21 Oppo广东移动通信有限公司 Connecting piece, coupling assembling and mobile terminal
CN107623198B (en) * 2017-08-31 2020-01-17 Oppo广东移动通信有限公司 Connecting assembly and mobile terminal
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