CN102280717A - Mobile terminal antenna and realization method thereof - Google Patents
Mobile terminal antenna and realization method thereof Download PDFInfo
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- CN102280717A CN102280717A CN2011101042188A CN201110104218A CN102280717A CN 102280717 A CN102280717 A CN 102280717A CN 2011101042188 A CN2011101042188 A CN 2011101042188A CN 201110104218 A CN201110104218 A CN 201110104218A CN 102280717 A CN102280717 A CN 102280717A
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Abstract
The invention relates to the mobile terminal technology field and discloses a mobile terminal antenna and a realization method thereof. In the invention, a dipole antenna, which is used to generate a frequency point and possess a 2.5G resonance, is arranged and a monopole antenna, which is used to generate a frequency point and possess a 2.5G resonance, is arranged. And the dipole antenna is connected with the monopole antenna through a bend lead so as to form an array antenna. The omnidirectional antenna with high gain and low out of roundness is provided. The gain of the antenna is raised. Signal receiving capability can be raised. Power consumption of equipment can be reduced. Cell usage endurance can be guaranteed. Besides, the low out of roundness can provide the omnidirectional coverage so as to avoid bad signals of some angles.
Description
Technical field
The present invention relates to technical field of mobile terminals, in particular a kind of mobile terminal antenna and its implementation.
Background technology
Along with the science and technology and the development of production technology, the use of various portable terminals more and more widely, various mobile terminal devices have spread to various crowds.
But the mobile terminal antenna ubiquity gain of prior art is low, and signal covers defect of bad, like this, has strengthened the power consumption of mobile terminal device, has reduced the useful life of battery of mobile terminal.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is that the above-mentioned defective at prior art provides a kind of mobile terminal antenna and its implementation, the antenna of the low deviation in roundness of a kind of omnidirectional high-gain is provided, improve signal reception, reduced the power consumption of equipment, guaranteed the persistence that battery uses.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of implementation method of mobile terminal antenna wherein, may further comprise the steps:
A, be provided with one and be used to produce a frequency at the dipole antenna of the resonance of 2.5G be provided with one and be used to produce the monopole antenna of a frequency at the resonance of 2.5G;
B and described dipole antenna is set and monopole antenna by one the bending lead be joined together to form an array antenna; The lead of described bending is used to change the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical;
The implementation method of described mobile terminal antenna, wherein, described step B also comprises:
B1, be that the center is symmetrical arranged with its mid point, be used for monopole antenna is carried out feed the lead of described bending.
The implementation method of described mobile terminal antenna, wherein, the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
The implementation method of described mobile terminal antenna, wherein, the length of described dipole antenna is 48mm, width is 13mm.
The implementation method of described mobile terminal antenna, wherein, described dipole antenna is identical with the monopole antenna width.
A kind of mobile terminal antenna wherein, comprises a dipole antenna and a monopole antenna, and described dipole antenna and monopole antenna are joined together to form an array antenna by the lead of a bending;
Described dipole antenna and described monopole antenna respectively are used to produce the resonance of a frequency at 2.5G;
The lead of described bending is used to change the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical.
Described mobile terminal antenna, wherein, the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
Described mobile terminal antenna, wherein, the length of described dipole antenna is 48mm, width is 13mm.
Described mobile terminal antenna, wherein, described dipole antenna is identical with the monopole antenna width.
Described mobile terminal antenna, wherein, the conductor width of described bending is 1-2 mm, is used for to the monopole antenna feed.
Mobile terminal antenna provided by the present invention and its implementation are provided with one and are used to produce a frequency at the dipole antenna of the resonance of 2.5G be provided with one and be used to produce the monopole antenna of a frequency at the resonance of 2.5G owing to adopted; And described dipole antenna and the monopole antenna lead by a bending is set is joined together to form an array antenna, the antenna of the low deviation in roundness of a kind of omnidirectional high-gain is provided, promoted the gain of antenna, improved signal reception, the power consumption of reduction equipment, guarantee the persistence that battery uses, the low deviation in roundness of this invention can omnidirectional cover in addition, avoids some angle signal bad.
Description of drawings
Fig. 1 is the mobile terminal antenna structural representation of the embodiment of the invention.
Fig. 2 is the mobile terminal antenna implementation method flow chart of the embodiment of the invention.
Fig. 3 is the result schematic diagram when the test gain during for 54mm of the length L of dipole antenna of the embodiment of the invention.
Fig. 4 be the embodiment of the invention when the dipole antenna length adjustment be 48mm, the resonance structure schematic diagram of whole mobile terminal antenna when width is 12mm and 13mm.
Fig. 5 is the radiation of power directional diagram that the face at angle is spent in value=0 of the mobile terminal antenna golden section (PHI) of the embodiment of the invention.
Fig. 6 is the mobile terminal antenna current trend structural representation of the embodiment of the invention.
Embodiment
A kind of mobile terminal antenna of the present invention and its implementation, main purpose is the antenna of the low deviation in roundness of omnidirectional's high-gain of design, primary band covers near a usually frequency range of usefulness of the right and wrong of 2.3G～2.7G(2.5G), for making purpose of the present invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
A kind of mobile terminal antenna that the embodiment of the invention provides, as shown in Figure 1, mainly comprise a dipole antenna 110 and a monopole antenna 130, described dipole antenna 110 and monopole antenna 130 are joined together to form an array antenna by the lead 120 of a bending.
Wherein, described dipole antenna 110 and described monopole antenna 130 can produce the resonance of a frequency at 2.5G separately, and the radiation field of the 2.5G that both produce carries out vector and forms a new electromagnetic field; The lead 120 of described bending is used to change the sense of current of dipole antenna 110 and monopole antenna 130, makes dipole antenna 110 consistent with the sense of current of monopole antenna 130.
As shown in Figure 1,110 parts are the dipole(dipole) antenna, be used to produce the resonance of a frequency at 2.5G, 130 parts are the monopole(monopole) antenna, and act on equally with the dipole antenna of 110 parts, produce the resonance of a frequency at 2.5G.
The length of dipole antenna 110 is less than 60mm generally speaking; The length of monopole antenna 130 is 50-60mm, need adjust length by required frequency when dipole antenna 110 and monopole antenna 130 designs, and bare bones is 1/2 wavelength (is 60mm at the 2.5G frequency), can adjust length a little according to actual conditions.
Dipole antenna is used for transmitting and receiving the signal of fixed frequency.Dipole antenna is made up of two conductors, and every is 1/4 wavelength, and promptly the antenna total length is a half-wavelength.So even sub antenna is half-wave dipole.The oscillator of dipole antenna can horizontal level, but also upright position.Its directional diagram is symmetry with the distributing point.Distributing point is at the center of half-wave dipole.
The passive monopole antenna of monopole antenna is mainly used in wide region (omnidirectional) emission or receiving system, and operating frequency of antenna is generally lower. and different frequency range has different purposes.Described array antenna is by the antenna that constitutes after the similar radiation element appropriate combination more than two.
Preferably, the length of described dipole antenna is 48mm, and width is 13mm.Described dipole antenna is identical with the monopole antenna width.And the conductor width of described bending is 1-2 mm, is used for to the monopole antenna feed.
Therefore the mobile terminal antenna of the embodiment of the invention promotes the gain of antenna, has improved signal reception, can reduce the transmitting power of equipment, reduces the power consumption of equipment, guarantees the persistence that battery uses.
Based on the mobile terminal antenna of the foregoing description, the embodiment of the invention also provides a kind of implementation method of mobile terminal antenna, as shown in Figure 2, may further comprise the steps:
Step S210, be provided with one and be used to produce a frequency at the dipole antenna of the resonance of 2.5G be provided with one and be used to produce the monopole antenna of a frequency at the resonance of 2.5G;
Step S220 and described dipole antenna is set and monopole antenna by one the bending lead be joined together to form an array antenna; The lead of described bending is used to change the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical.
In the specific implementation, can be earlier according to formula: the light velocity=wavelength * resonance frequency, calculate resonance point at 2.5G, when wavelength then is 120mm, the theoretical length of dipole (dipole) antenna 110 be 60mm(60mm this be theoretical length, can change to some extent in the time of subsequent simulation and actual debugging), pass through artificial debugging again, it is that FR-4(FR-4 is a kind of code name of flame resistant material grade that antenna is layered on material rate, the meaning of representative is a resin material must can be from a kind of material specification of horizontal blanking through fired state, it is not a kind of title material, but a kind of material rate) PCB substrate commonly used on.
Because substrate has dielectric constant, so the length of dipole antenna 110 can change to some extent, adjusting dipole antenna length during emulation is that 54mm(54mm is not an optimum value, but the result of emulation at present, if antenna is to be layered on the substrate or material of other dielectric constants, this length can change to some extent, dipole antenna 110 emulation now be 54mm, length can change again after lead 120 parts that increased bending and monopole antenna 130 parts; In the application of reality, the length of each several part antenna can't be certain identical with the length of emulation, and what set forth here is a kind of method and step).
With the 2.5G frequency is the resonance center, and the gain of dipole antenna 110 at this moment is approximately only about 2.6dB after tested.
In order to promote gain, increase lead 120 parts and monopole antenna 130 parts of bending in the present embodiment, as shown in Figure 1, is that the center is symmetrical arranged with the lead 120 of described bending with its mid point, be used for monopole antenna is carried out feed, electric current in lead 120 parts of bending with the central point be the center round about, Wan Zhe lead 120 plays the feed effect to monopole antenna 130 like this, and don't can be because the electric current formation radiated interference of itself arrives whole array antenna.
The length of monopole antenna 130 is that required resonance point is 1/2 wavelength of 2.5G, and theoretical value is 60mm, and wherein, the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm, specifically can change to some extent according to simulation result and actual debugging.
As shown in Figure 1, increase lead 120 parts and monopole antenna 130 parts of bending, obtain test result: the figure as a result that is illustrated in figure 3 as an emulation, wherein, X-axis is a resonance frequency, and unit is GHz, Y-axis is represented return loss, be to see a parameter of the energy that antenna-reflected is returned by network analyzer from the input port of antenna, this value is negative value, and is the smaller the better.M1 shown in the figure is the resonance point of 2.5G, and current information is that the length L of dipole antenna 110 is 54mm, the result of test gain, and the demonstration maximum gain is 4.78dB, is less than 5dB, so again by length L that changes antenna and the gain that width W changes antenna.
Adjust the length and the width of dipole (dipole) antenna 110, adjust the width W=13mm of dipole antenna 110, length L=48mm: and the length of lead 120 of bending is not required, the width suggestion is between 1～2mm, give monopole antenna 130 feeds as long as can form, do not get final product and itself do not participate in radiation; The length of monopole antenna 130 is no more than 60mm, and width and dipole antenna 110 change simultaneously, and generally between 50～60mm, these data are to determine according to the difference of substrate dielectric constant according to emulation and actual debugging.
As shown in Figure 4, current information is that dipole antenna 110 length are 48mm, the resonance of whole mobile terminal antenna when width is respectively 12mm and 13mm (lead 120 and the monopole antenna 130 that comprise dipole antenna 110, bending), when width is that 12mm is curve m2, width is curve m3 during for 13mm, as seen, and best results when width is 13mm, the gain that measure mobile terminal antenna this moment is 5.14dB, produces a desired effect.Promptly when the length of described dipole antenna 110 be 48mm, width is 13mm, best results, the mobile terminal antenna gain of the embodiment of the invention was seen and was to have improved antenna gain greatly by 5.14dB this moment.
At this moment, the radiation of power directional diagram deviation in roundness of the face at the value of golden section Φ (PHI)=0 degree angle is less than 1dB, and as shown in Figure 5, that radiation of power directional diagram representative with PHI=0 degree angle is in particular in as the gain circle N3 among Fig. 5; See that by the gain circle N3 in figure below this circle is not the circle of standard, protrude a little in some angle, some angle a little indent some, be not the circle of standard; And deviation in roundness is exactly the poor of the maximum inner diameter of this gain circle N3 and minimum diameter, and deviation in roundness is defined as the poor of the maximum gain of this gain circle N3 circle and least gain on the antenna of this invention, the result of emulation, and the difference of this maxgain value and least gain is less than 1db.
More than be embodied as the implementation method flow process of mobile terminal antenna of the present invention, size is specific to can be because difference slightly such as substrate environment in the reality.
The implementation method of the mobile terminal antenna of the embodiment of the invention has realized the mobile terminal antenna that a kind of omnidirectional high-gain and deviation in roundness are very low, applicable to some products that gain is had relatively high expectations to product.High-gain helps saving battery, and low deviation in roundness helps omnidirectional and covers.
Mobile terminal antenna provided by the present invention and its implementation are provided with one and are used to produce a frequency at the dipole antenna of the resonance of 2.5G be provided with one and be used to produce the monopole antenna of a frequency at the resonance of 2.5G owing to adopted; And described dipole antenna and the monopole antenna lead by a bending is set is joined together to form an array antenna, the antenna of the low deviation in roundness of a kind of omnidirectional high-gain is provided, promoted the gain of antenna, improved signal reception, and has following advantage: 1, realize conveniently, structure is simple and clear, and can effectively improve the gain of antenna.2, the low deviation in roundness of the high-gain of omnidirectional is applicable to each scene, can not occur the dead angle because some directive gain is lower.3, this scheme is with low cost, easily realizes.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the implementation method of a mobile terminal antenna is characterized in that, may further comprise the steps:
A, be provided with one and be used to produce a frequency at the dipole antenna of the resonance of 2.5G be provided with one and be used to produce the monopole antenna of a frequency at the resonance of 2.5G;
B and described dipole antenna is set and monopole antenna by one the bending lead be joined together to form an array antenna; The lead of described bending is used to change the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical.
2. according to the implementation method of the described mobile terminal antenna of claim 1, it is characterized in that described step B also comprises:
B1, be that the center is symmetrical arranged with its mid point, be used for monopole antenna is carried out feed the lead of described bending.
3. according to the implementation method of the described mobile terminal antenna of claim 1, it is characterized in that the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
4. according to the implementation method of the described mobile terminal antenna of claim 1, it is characterized in that the length of described dipole antenna is 48mm, width is 13mm.
5. according to the implementation method of the described mobile terminal antenna of claim 1, it is characterized in that described dipole antenna is identical with the monopole antenna width.
6. a mobile terminal antenna is characterized in that, comprises a dipole antenna and a monopole antenna, and described dipole antenna and monopole antenna are joined together to form an array antenna by the lead of a bending;
Described dipole antenna and described monopole antenna respectively are used to produce the resonance of a frequency at 2.5G;
The lead of described bending is used to change the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical.
7. mobile terminal antenna according to claim 6 is characterized in that the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
8. mobile terminal antenna according to claim 6 is characterized in that, the length of described dipole antenna is 48mm, and width is 13mm.
9. mobile terminal antenna according to claim 6 is characterized in that, described dipole antenna is identical with the monopole antenna width.
10. mobile terminal antenna according to claim 6 is characterized in that the conductor width of described bending is 1-2 mm, is used for to the monopole antenna feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110104218.8A CN102280717B (en) | 2011-04-26 | 2011-04-26 | Mobile terminal antenna and realization method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110104218.8A CN102280717B (en) | 2011-04-26 | 2011-04-26 | Mobile terminal antenna and realization method thereof |
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| Publication Number | Publication Date |
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| CN102280717A true CN102280717A (en) | 2011-12-14 |
| CN102280717B CN102280717B (en) | 2014-07-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105809232A (en) * | 2014-12-30 | 2016-07-27 | 航天信息股份有限公司 | Semi-active RFID label |
| CN111770220A (en) * | 2020-06-24 | 2020-10-13 | Oppo广东移动通信有限公司 | Electronic device |
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|---|---|---|---|---|
| US6127981A (en) * | 1995-10-13 | 2000-10-03 | Lockheed Martin Corporation | Phased array antenna for radio frequency identification |
| CN1428016A (en) * | 2000-04-05 | 2003-07-02 | 捷讯研究有限公司 | Electric connected multi-feed antenna system |
| CN1588696A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Small high directional plane double antenna |
| CN101326682A (en) * | 2006-03-29 | 2008-12-17 | 香港应用科技研究院有限公司 | Meander feed structure antenna systems and methods |
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2011
- 2011-04-26 CN CN201110104218.8A patent/CN102280717B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127981A (en) * | 1995-10-13 | 2000-10-03 | Lockheed Martin Corporation | Phased array antenna for radio frequency identification |
| CN1428016A (en) * | 2000-04-05 | 2003-07-02 | 捷讯研究有限公司 | Electric connected multi-feed antenna system |
| CN1588696A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Small high directional plane double antenna |
| CN101326682A (en) * | 2006-03-29 | 2008-12-17 | 香港应用科技研究院有限公司 | Meander feed structure antenna systems and methods |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105809232A (en) * | 2014-12-30 | 2016-07-27 | 航天信息股份有限公司 | Semi-active RFID label |
| CN105809232B (en) * | 2014-12-30 | 2020-04-03 | 航天信息股份有限公司 | Semi-active RFID tag |
| CN111770220A (en) * | 2020-06-24 | 2020-10-13 | Oppo广东移动通信有限公司 | Electronic device |
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| Publication number | Publication date |
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| CN102280717B (en) | 2014-07-30 |
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