CN103367891A - Reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna and wireless terminal thereof - Google Patents
Reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna and wireless terminal thereof Download PDFInfo
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- CN103367891A CN103367891A CN2013101734417A CN201310173441A CN103367891A CN 103367891 A CN103367891 A CN 103367891A CN 2013101734417 A CN2013101734417 A CN 2013101734417A CN 201310173441 A CN201310173441 A CN 201310173441A CN 103367891 A CN103367891 A CN 103367891A
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Abstract
The invention discloses a reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna, which comprises a feed part, a plurality of radiation fins, a plurality of high-frequency parasitic radiation fins and an electrical connection part, wherein the radiation fins comprise a first radiation fin, a second radiation fin and a third radiation fin; the first radiation fin is connected with the feed part; the second radiation fin and the third radiation fin are connected with the same side of the first radiation fin; a first gap exists between the second radiation fin and the third radiation fin; at least one of the second radiation fin and the third radiation fin is movably connected with the first radiation fin, and is used for adjusting the interval of the first gap; the high-frequency parasitic radiation fins comprise a first high-frequency parasitic radiation fin and a second high-frequency parasitic radiation fin; the first high-frequency parasitic radiation fin is movably connected with the second high-frequency parasitic radiation fin; the first high-frequency parasitic radiation fin is connected with the electrical connection part; and a second gap exists between the second high-frequency parasitic radiation fin and the second radiation fin.
Description
Technical field
The present invention relates to domain of communication equipment, particularly the low SAR value wireless terminal antenna of a kind of restructural and wireless terminal thereof.
Background technology
Along with the fast development of wireless communication technology, the kind of mobile radio terminal electronic product is more and more various, and function becomes increasingly complex.Wireless communication technology also becomes one of critical function of the electronic products such as notebook computer, panel computer and mobile phone.Owing under the effect of external electromagnetic field, will produce induction field in the human body.Because each organ of human body is even lossy dielectric, so electromagnetic field will generation current in the human body, causes absorbing and the dissipation electromagnetic energy.And the outside radiated electromagnetic wave of antenna, when the close human body of antenna, human body will be subject to above-mentioned impact.What so in numerous indexs of antenna, SAR(Specific Absorption Rate) value was described is the power that human body is subjected to aerial radiation.The meaning of SAR value is the electromagnetic power that tissue absorbed or consumed of unit mass, and unit is W/Kg, and the SAR value has the two kinds of standards in America and Europe, records under 1g tissue liquid and 10g tissue liquid respectively.The lower human body of SAR value is subjected to aerial radiation just more weak, otherwise stronger.And the distance of the radiant power of the size of SAR value and antenna, antenna and human body has directly and contacts.The radiant power of antenna is larger, and the SAR value is higher, otherwise the SAR value is low; The antenna distance human body is nearer, and the SAR value is higher, otherwise lower.Therefore the radiance of antenna and SAR value height is conflicting.To be placed on the leg or from the place of health close to very, low like this SAR value high radiation efficiency becomes the difficult point that wireless terminal antenna designs such as, people most situation when using panel computer.
Summary of the invention
The present invention is directed to the prior art above shortcomings, proposed the low SAR value wireless terminal antenna of a kind of restructural.This reconfigurable antenna can be effectively in the situation that guarantee aerial radiation power, reduce the SAR value, weakened the impact that human body is subjected to aerial radiation.
The present invention is achieved through the following technical solutions:
A kind of restructural hangs down SAR value wireless terminal antenna, comprises feed part, some radiation fins, some high frequency parasitic radiation sheets and electric connecting member; Wherein,
Some radiation fins comprise the first radiation fin, the second radiation fin, and the 3rd radiation fin, the first radiation fin connects the feed part, the second radiation fin and the 3rd radiation fin are connected to the homonymy of the first radiation fin, comprise one first gap between the second radiation fin and the 3rd radiation fin, at least one is movable connection the first radiation fin in the second radiation fin and the 3rd radiation fin, in order to regulate the spacing in the first gap;
Some high frequency parasitic radiation sheets comprise the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, movable connection the first high frequency parasitic radiation sheet of the second high frequency parasitic radiation sheet, the first high frequency parasitic radiation sheet connects electric connecting member, comprises one second gap between the second high frequency parasitic radiation sheet and the second radiation fin.
Better, also comprise an electrical fitting, connect electric connecting member, electrical fitting ground connection by conductor.
Better, electrical fitting comprises control interface, connects a wireless terminal, in order to signal interconnection.
Better, electrical fitting is the device with break-make radiofrequency signal;
Under ground state, the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, and electric connecting member ground connection are in the high frequency state;
Under the state that disconnects with ground, the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, and electric connecting member is floating empty, is in the low frequency state.
A kind of restructural hangs down SAR value wireless terminal, comprises that restructural as claimed in claim 1 hangs down SAR value wireless terminal antenna.
Better, the low SAR value wireless terminal of a kind of restructural also comprises pcb board and antenna holder, and pcb board connects antenna holder, and the low SAR value wireless terminal antenna of restructural is arranged on the antenna holder.
Better, pcb board comprises coaxial cable, earth terminal, the feed part connecting coaxial cable of the low SAR value wireless terminal antenna of restructural, and the electric connecting member of the low SAR value wireless terminal antenna of restructural connects earth terminal, in order to form signal circuit.
Description of drawings
Shown in Figure 1 is the structural representation of wireless terminal of the present invention;
Shown in Figure 2 is the structural representation of antenna of the present invention;
Shown in Figure 3 is the end view of wireless terminal of the present invention;
Shown in Figure 4 is the structural representation of electrical fitting of the present invention;
Shown in Figure 5 is the frequency response chart of antenna of the present invention.
Embodiment
Below with reference to accompanying drawing of the present invention; technical scheme in the embodiment of the invention is carried out clear, complete description and discussion; obviously; as described herein only is a part of example of the present invention; it is not whole examples; based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the invention, be further explained explanation below in conjunction with accompanying drawing as an example of specific embodiment example, and each embodiment does not consist of the restriction to the embodiment of the invention.
With reference to figure 1, this antenna system comprises the PCB(Printed circuit board of wireless terminal) plate 100, plastic stent 101, antenna part 200 consists of.Antenna part 200 is positioned at pcb board 100 1 ends, and height is identical with pcb board, has satisfied the trend of wireless terminal thin thickness.Take this wireless terminal product as example, pcb board 100 width 110mm, length 160mm, size is big or small close with present wireless terminal product.
With reference to figure 2, antenna part 200 comprises the radiation fin 201,202,204 that is connected with feed part 210, high frequency parasitic radiation sheet 206,207, electric connecting member 208.
With reference to figure 3, aerial radiation sheet 201 is positioned at an end of pcb board, and pcb board has certain thickness, and radiation fin 201 is on the same level direction with pcb board.Radiation fin 202,204 links to each other with radiation fin 201, and radiation fin 201,202 produces the resonance of low frequency, and radiation fin 201 is connected to feed part 210, the coaxial cable on feed part 210 connecting PCB boards 100.Radiation fin 202 produces second resonance of high frequency, and low-and high-frequency impedance and high-frequency resonant frequency can be regulated in the slit 203 between radiation fin 202 and the radiation fin 204.
The high frequency parasitic radiation sheet 207 and 206 of antenna, electric connecting member 208 links to each other, and produces first resonance of high frequency, and the impedance of low-and high-frequency and the resonance frequency of high frequency can be regulated in the slit 205 between the high frequency parasitic radiation sheet 206 and 204.Electric connecting member 208 is connected the earth on electrical fitting 300 connecting PCB boards 100 by conductor 400 with electrical fitting 300.
With reference to figure 4, the device of electrical fitting 300 for having the break-make radiofrequency signal, radio-frequency (RF) switch pipe or PIN diode etc., the inherent radio frequency earth terminal of such devices is used for linking to each other with pcb board 100, forms complete signal circuit.Device 300 possesses control interface 209 simultaneously simultaneously, is used for interconnecting with mobile terminal signal.
Electric connecting member 208 is connected with electrical fitting 300 by conductor 400, just can control high frequency parasitic radiation sheet 206,207, the ground connection of electric connecting member 208 by control electrical fitting 300.Thereby form 206,207,208 and connect to form the high frequency state with ground, disconnect with ground so that high frequency parasitic radiation sheet 206,207, electric connecting member 208 is floating empty, forms the low frequency state.
The present invention (is the interval between radiation fin 202 and 204 by the size of adjusting slit 203 and gap 205, and the spacing between high frequency parasitic radiation sheet 206 and the radiation fin 204), regulate the impedance of low-and high-frequency and the resonance frequency of high frequency, thereby regulate its degree of coupling, utilize the connecting and disconnecting on electrical fitting 300 control high frequency parasitic radiation sheets and ground, realize that restructural is to reduce the SAR value.
Fig. 5 is the frequency response chart of antenna of the present invention, and its main operating frequency range is distributed in 0.824GHz-0.96GHz, and 1.71GHz-2.17GHz comprises GSM850/900, DCS, PCS, UMTS frequency range.Electrical fitting conducting in 300 minutes and disconnection two states, respectively two kinds of situations of corresponding high and low frequency.Conducting state respective frequencies response f01, also there are Frequency response f1 in cut-off state respective frequencies response f02, f01 state, and also there is high frequency frequency response f2 in the f02 state, and f1, f2 frequency response need not used.
| GPRS850 | GPRS900 | GPRS1800 | GPRS1900 | W850 | W1900 | W2100 |
| 26.98 | 28.53 | 28.55 | 27.76 | 17.25 | 20.56 | 21.51 |
| 28.31 | 27.06 | 27.61 | 28.17 | 17.28 | 20.64 | 20.67 |
| 29.35 | 26.23 | 26.85 | 28.69 | 18.19 | 20.43 | 21.24 |
Table 1
Table 1 is embodiment of the invention radiant power TRP(unit: dBm) schematic table.Each frequency range radiant power of GPRS and WCDMA low-and high-frequency all satisfies the generally radiant power of wireless terminal product.
Table 2
Table 2 is embodiment of the invention SAR value test result.The SAR value that the embodiment of the invention has been tested Top face and Back face by general wireless terminal flat-panel electronic product test request.As shown in Figure 3, the A face is the Top face, and the B face is the Back face.The distance of machine and testing apparatus is 0mm during test.
The present invention has reduced the SAR value of antenna under the condition of not losing aerial radiation power, reduced the impact of aerial radiation on human body, has proposed to fall a kind of new method of SAR value.
The above; only for the better embodiment of the present invention, but protection scope of the present invention do not limit to therewith, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (7)
1. the low SAR value wireless terminal antenna of restructural is characterized in that, comprises feed part, some radiation fins, some high frequency parasitic radiation sheets and electric connecting member; Wherein,
Described some radiation fins comprise the first radiation fin, the second radiation fin, and the 3rd radiation fin, described the first radiation fin connects described feed part, described the second radiation fin and described the 3rd radiation fin are connected to the homonymy of described the first radiation fin, comprise one first gap between described the second radiation fin and described the 3rd radiation fin, at least one is described the first radiation fin of movable connection in described the second radiation fin and described the 3rd radiation fin, in order to regulate the spacing in described the first gap;
Described some high frequency parasitic radiation sheets comprise the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, described the first high frequency parasitic radiation sheet of the movable connection of described the second high frequency parasitic radiation sheet, described the first high frequency parasitic radiation sheet connects described electric connecting member, comprises one second gap between described the second high frequency parasitic radiation sheet and described the second radiation fin.
2. the low SAR value wireless terminal antenna of a kind of restructural according to claim 1 is characterized in that, also comprises an electrical fitting, connects described electric connecting member by conductor, described electrical fitting ground connection.
3. the low SAR value wireless terminal antenna of a kind of restructural according to claim 2 is characterized in that, described electrical fitting comprises control interface, connects a wireless terminal, in order to signal interconnection.
4. the low SAR value wireless terminal antenna of a kind of restructural according to claim 2 is characterized in that, described electrical fitting is the device with break-make radiofrequency signal;
Under ground state, described the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, and described electric connecting member ground connection are in the high frequency state;
Under the state that disconnects with ground, described the first high frequency parasitic radiation sheet, the second high frequency parasitic radiation sheet, and described electric connecting member is floating empty, is in the low frequency state.
5. the low SAR value wireless terminal of restructural is characterized in that, comprises that restructural as claimed in claim 1 hangs down SAR value wireless terminal antenna.
6. a kind of restructural according to claim 5 hangs down SAR value wireless terminal, it is characterized in that, the low SAR value wireless terminal of described a kind of restructural also comprises pcb board and antenna holder, described pcb board connects described antenna holder, and the low SAR value wireless terminal antenna of described restructural is arranged on the described antenna holder.
7. a kind of restructural according to claim 6 hangs down SAR value wireless terminal, it is characterized in that, described pcb board comprises coaxial cable, earth terminal, the feed of the low SAR value wireless terminal antenna of restructural partly connects described coaxial cable, the electric connecting member of the low SAR value wireless terminal antenna of restructural connects described earth terminal, in order to form signal circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101734417A CN103367891A (en) | 2013-05-10 | 2013-05-10 | Reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna and wireless terminal thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103560322A (en) * | 2013-10-25 | 2014-02-05 | 惠州硕贝德无线科技股份有限公司 | Antenna designing method |
| CN105006628A (en) * | 2015-07-02 | 2015-10-28 | 王翔 | Sensitive and capacitive member series connection loading reconfigurable portable mobile communication device antenna |
| CN105811088A (en) * | 2016-03-22 | 2016-07-27 | 歌尔声学股份有限公司 | Antenna device and mobile terminal |
| CN107394358A (en) * | 2016-05-17 | 2017-11-24 | 北京小米移动软件有限公司 | Antenna structure and electronic equipment |
| CN107994345A (en) * | 2017-10-10 | 2018-05-04 | 捷开通讯(深圳)有限公司 | The antenna and mobile terminal of a kind of mobile terminal |
| CN111755803A (en) * | 2020-06-30 | 2020-10-09 | 联想(北京)有限公司 | Electronic equipment and control method |
| CN113131195A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Antenna and communication equipment |
| EP4181317A4 (en) * | 2020-07-29 | 2023-12-06 | Huawei Technologies Co., Ltd. | Wireless terminal |
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| US20130113667A1 (en) * | 2008-03-05 | 2013-05-09 | Ethertronics, Inc. | Antenna and method for steering antenna beam direction |
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| US20130113667A1 (en) * | 2008-03-05 | 2013-05-09 | Ethertronics, Inc. | Antenna and method for steering antenna beam direction |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560322A (en) * | 2013-10-25 | 2014-02-05 | 惠州硕贝德无线科技股份有限公司 | Antenna designing method |
| CN103560322B (en) * | 2013-10-25 | 2016-08-24 | 惠州硕贝德无线科技股份有限公司 | A kind of antenna design method |
| CN105006628A (en) * | 2015-07-02 | 2015-10-28 | 王翔 | Sensitive and capacitive member series connection loading reconfigurable portable mobile communication device antenna |
| CN105811088A (en) * | 2016-03-22 | 2016-07-27 | 歌尔声学股份有限公司 | Antenna device and mobile terminal |
| CN107394358A (en) * | 2016-05-17 | 2017-11-24 | 北京小米移动软件有限公司 | Antenna structure and electronic equipment |
| CN107394358B (en) * | 2016-05-17 | 2020-07-31 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN107994345A (en) * | 2017-10-10 | 2018-05-04 | 捷开通讯(深圳)有限公司 | The antenna and mobile terminal of a kind of mobile terminal |
| CN113131195A (en) * | 2019-12-31 | 2021-07-16 | 华为技术有限公司 | Antenna and communication equipment |
| CN111755803A (en) * | 2020-06-30 | 2020-10-09 | 联想(北京)有限公司 | Electronic equipment and control method |
| EP4181317A4 (en) * | 2020-07-29 | 2023-12-06 | Huawei Technologies Co., Ltd. | Wireless terminal |
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Application publication date: 20131023 |