CN102280717B - Mobile terminal antenna and realization method thereof - Google Patents

Mobile terminal antenna and realization method thereof Download PDF

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Publication number
CN102280717B
CN102280717B CN201110104218.8A CN201110104218A CN102280717B CN 102280717 B CN102280717 B CN 102280717B CN 201110104218 A CN201110104218 A CN 201110104218A CN 102280717 B CN102280717 B CN 102280717B
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antenna
mobile terminal
monopole
dipole
dipole antenna
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CN201110104218.8A
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CN102280717A (en
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潘灵建
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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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

A kind of mobile terminal antenna and its implementation
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 development of science and technology and production technology, the use of various mobile terminals is more and more extensive, and various mobile terminal devices have spread to various crowds.
But the mobile terminal antenna ubiquity gain of prior art is low, signal covers bad defect, 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, for the above-mentioned defect of prior art, provides a kind of mobile terminal antenna and its implementation, the antenna of the low deviation in roundness of a kind of omni-directional high-gain is provided, improve signal reception, reduced the power consumption of equipment, ensured the persistence that battery uses.
The technical scheme that technical solution problem of the present invention adopts is as follows:
An implementation method for mobile terminal antenna, wherein, comprises the following steps:
A, arrange one for generation of a frequency dipole antenna at the resonance of 2.5GHz, and arrange one for generation of a frequency monopole antenna at the resonance of 2.5GHz;
B also arranges described dipole antenna and monopole antenna is joined together to form an array antenna by the wire of a bending; The wire of described bending, for changing 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, the wire of described bending is symmetrical arranged centered by its mid point, for monopole antenna is carried out to feed.
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 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 wire of a bending;
Described dipole antenna and described monopole antenna be the resonance at 2.5GHz for generation of a frequency respectively;
The wire of described bending, for changing 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 monopole antenna width.
Described mobile terminal antenna, wherein, the conductor width of described bending is 1-2 mm, for giving monopole antenna feed.
Mobile terminal antenna provided by the present invention and its implementation, due to adopted arrange one for generation of a frequency dipole antenna at the resonance of 2.5GHz, and arrange one for generation of a frequency monopole antenna at the resonance of 2.5GHz; And described dipole antenna is set and monopole antenna is joined together to form an array antenna by the wire of a bending, the antenna of the low deviation in roundness of a kind of omni-directional high-gain is provided, promote the gain of antenna, improve signal reception, the power consumption of reduction equipment, ensure the persistence that battery uses, the low deviation in roundness of this invention can omnidirectional cover in addition, avoids some angle signal bad.
Brief description of the drawings
Fig. 1 is the mobile terminal antenna structural representation of the embodiment of the present invention.
Fig. 2 is the mobile terminal antenna implementation method flow chart of the embodiment of the present invention.
Fig. 3 is the result schematic diagram of the length L when dipole antenna of the embodiment of the present invention be 54mm time test gain.
Fig. 4 be the embodiment of the present invention when 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 of the face at the degree angle, value=0 of the mobile terminal antenna golden section (PHI) of the embodiment of the present invention.
Fig. 6 is the mobile terminal antenna current trend structural representation of the embodiment of the present invention.
Embodiment
A kind of mobile terminal antenna of the present invention and its implementation, main purpose is the antenna of a low deviation in roundness of omni-directional high-gain of design, primary band covers near the usually frequency range of use of right and wrong of 2.3GHz~2.7GHz(2.5GHz), for making object of the present invention, technical scheme and advantage clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of mobile terminal antenna that the embodiment of the present 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 wire 120 of a bending.
Wherein, described dipole antenna 110 and described monopole antenna 130 can produce the resonance of a frequency at 2.5GHz separately, and the radiation field of the 2.5GHz that both produce carries out vector and forms a new electromagnetic field; The wire 120 of described bending, for changing 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 dipole(dipole) antenna, the resonance for generation of a frequency at 2.5GHz, 130 parts are monopole(monopole) antenna, act on equally with the dipole antenna of 110 parts, produce the resonance of a frequency at 2.5GHz.
Generally the length of dipole antenna 110 is less than 60mm; The length of monopole antenna 130 is 50-60mm, when designing, dipole antenna 110 and monopole antenna 130 need to adjust length by required frequency, bare bones is 1/2 wavelength (being 60mm at 2.5GHz frequency), can adjust a little length according to actual conditions.
Described dipole antenna 110 and monopole antenna 130 are joined together to form an array antenna by wire 120 by bending, the effect of bending is the sense of current that changes dipole antenna 110 and monopole antenna 130, make dipole antenna 110 consistent with the sense of current of monopole antenna 130, as shown in Figure 6, arrow 11 indications are sense of current: the electric current of left side dipole antenna is identical with the sense of current of the right monopole, the central conductor part sense of current is contrary with central point, thereby be combined into a simple array antenna, promote the gain of antenna.
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 antenna total length is half-wavelength.So even sub antenna is half-wave dipole.The oscillator of dipole antenna can horizontal level, also can upright position.Its directional diagram is taking distributing point as symmetrical.Distributing point is at the center of half-wave dipole.
The passive monopole antenna of monopole antenna is mainly used in wide region (omnidirectional) transmitting or receiving system, and operating frequency of antenna is generally lower. and different frequency range has different purposes.Described array antenna is by two above appropriately combined rear antennas that form of similar radiation element.
Preferably, the length of described dipole antenna is 48mm, and width is 13mm.Described dipole antenna is identical with monopole antenna width.And the conductor width of described bending is 1-2 mm, for giving monopole antenna feed.
Therefore the mobile terminal antenna of the embodiment of the present invention, promotes the gain of antenna, has improved signal reception, can reduce the transmitting power of equipment, reduces the power consumption of equipment, ensures the persistence that battery uses.
Based on the mobile terminal antenna of above-described embodiment, the embodiment of the present invention also provides a kind of implementation method of mobile terminal antenna, as shown in Figure 2, comprises the following steps:
Step S210, arrange one for generation of a frequency dipole antenna at the resonance of 2.5GHz, and arrange one for generation of a frequency monopole antenna at the resonance of 2.5GHz;
Step S220 also arranges described dipole antenna and monopole antenna is joined together to form an array antenna by the wire of a bending; The wire of described bending, for changing 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 first according to formula: the light velocity=wavelength × resonance frequency, calculate resonance point at 2.5GHz, when wavelength is 120mm, the theoretical length of dipole (dipole) antenna 110 be 60mm(60mm this be theoretical length, when subsequent simulation and actual debugging, can change to some extent), pass through again artificial debugging, it is that FR-4(FR-4 is a kind of code name of flame resistant material grade that antenna is layered on to material rate, the meaning of representative is 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) conventional PCB substrate on.
Because substrate has dielectric constant, so the length of dipole antenna 110 can change to some extent, when emulation, adjusting dipole antenna length is that 54mm(54mm is not 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, now dipole antenna 110 emulation be 54mm, after having increased wire 120 parts of bending and monopole antenna 130 parts, length can change again; In actual application, the length of each several part antenna can't be certain identical with the length of emulation, and set forth herein is a kind of method and step).
Taking 2.5GHz frequency as resonance center, the now gain of dipole antenna 110 is approximately only in 2.6dB left and right after tested.
In order to promote gain, in the present embodiment, increase wire 120 parts and monopole antenna 130 parts of bending, as shown in Figure 1, the wire of described bending 120 is symmetrical arranged centered by its mid point, for monopole antenna is carried out to feed, centered by central point round about, the wire 120 of bending plays the feed effect to monopole antenna 130 to electric current in wire 120 parts of bending like this, and don't can be because the electric current of itself forms radiated interference to whole array antenna.
The length of monopole antenna 130 is that required resonance point is 1/2 wavelength of 2.5GHz, 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 wire 120 parts and monopole antenna 130 parts of bending, obtain test result: the result figure that is illustrated in figure 3 an emulation, wherein, X-axis is resonance frequency, and unit is GHz, Y-axis represents return loss, be a parameter seeing the energy that antenna-reflected returns by network analyzer from the input port of antenna, this value is negative value, the smaller the better.M1 shown in figure is the resonance point of 2.5GHz, current information is that the length L of dipole antenna 110 is 54mm, the result of test gain, and demonstration maximum gain is 4.78dB, be less than 5dB, so change again the gain of antenna by changing the length L of antenna and width W.
Adjust length and the width of dipole (dipole) antenna 110, adjust the width W=13mm of dipole antenna 110, length L=48mm: and the not requirement of length of wire 120 to bending, width is advised between 1~2mm, as long as can form to monopole antenna 130 feeds, 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 according to emulation and actual debugging, generally between 50~60mm, these data are to determine according to the difference of substrate dielectric constant.
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 (comprising wire 120 and the monopole antenna 130 of dipole antenna 110, bending), when width is that 12mm is curve m2, when being 13mm, width is curve m3, visible, and best results when width is 13mm, the gain of now measuring mobile terminal antenna is 5.14dB, produces a desired effect.When the length of described dipole antenna 110 is 48mm, width is 13mm, best results, and the now mobile terminal antenna of embodiment of the present invention gain is shown in for 5.14dB, has greatly improved antenna gain.
Now, the radiation of power directional diagram deviation in roundness of the face at the degree angle, value=0 of golden section Φ (PHI) is less than 1dB, as shown in Figure 5, with that radiation of power directional diagram representative at degree angle, PHI=0, is in particular in as the gain circle N3 in Fig. 5; Seen 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, on the antenna of this invention, deviation in roundness is defined as the poor of the maximum gain of this gain circle N3 circle and least gain, 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 the slightly difference such as substrate environment in reality.
The implementation method of the mobile terminal antenna of the embodiment of the present invention, has realized the mobile terminal antenna that a kind of omni-directional high-gain and deviation in roundness are very low, the product of having relatively high expectations to producing gain applicable to some.High-gain is conducive to save battery, and low deviation in roundness is conducive to omnidirectional and covers.
Mobile terminal antenna provided by the present invention and its implementation, due to adopted arrange one for generation of a frequency dipole antenna at the resonance of 2.5GHz, and arrange one for generation of a frequency monopole antenna at the resonance of 2.5GHz; And described dipole antenna is set and monopole antenna is joined together to form an array antenna by the wire of a bending, the antenna of the low deviation in roundness of a kind of omni-directional high-gain is provided, promote the gain of antenna, improve signal reception, and tool has the following advantages: it is convenient 1, to realize, 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 be because of some directive gain compared with not low and occur dead angle.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, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection range of claims of the present invention.

Claims (8)

1. an implementation method for mobile terminal antenna, is characterized in that, comprises the following steps:
A, arrange one for generation of a frequency dipole antenna at the resonance of 2.5GHz, and arrange one for generation of a frequency monopole antenna at the resonance of 2.5GHz;
B also arranges described dipole antenna and monopole antenna is joined together to form an array antenna by the wire of a bending; The wire of described bending, for changing the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical;
Described step B also comprises:
B1, the wire of described bending is symmetrical arranged centered by its mid point, for monopole antenna is carried out to feed;
Described dipole antenna becomes end to end linearly arrangement with monopole antenna.
2. the implementation method of mobile terminal antenna according to claim 1, is characterized in that, the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
3. the implementation method of mobile terminal antenna according to claim 1, is characterized in that, the length of described dipole antenna is 48mm, and width is 13mm.
4. the implementation method of mobile terminal antenna according to claim 1, is characterized in that, described dipole antenna is identical with monopole antenna width.
5. 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 wire of a bending;
Described dipole antenna and described monopole antenna be the resonance at 2.5GHz for generation of a frequency respectively;
The wire of described bending, for changing the sense of current of dipole antenna and monopole antenna, makes the sense of current of dipole antenna and monopole antenna identical;
The wire of described bending is symmetrical arranged centered by its mid point; The conductor width of described bending is 1-2 mm, for giving monopole antenna feed;
Described dipole antenna becomes end to end linearly arrangement with monopole antenna.
6. mobile terminal antenna according to claim 5, is characterized in that, the length of described dipole antenna is less than 60mm; The length of described monopole antenna is 50-60mm.
7. mobile terminal antenna according to claim 5, is characterized in that, the length of described dipole antenna is 48mm, and width is 13mm.
8. mobile terminal antenna according to claim 5, is characterized in that, described dipole antenna is identical with monopole antenna width.
CN201110104218.8A 2011-04-26 2011-04-26 Mobile terminal antenna and realization method thereof Active CN102280717B (en)

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CN105809232B (en) * 2014-12-30 2020-04-03 航天信息股份有限公司 Semi-active RFID tag
CN111770220B (en) * 2020-06-24 2021-09-28 Oppo广东移动通信有限公司 Electronic device

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

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