CN205680776U - A kind of antenna reducing equipment SAR value - Google Patents
A kind of antenna reducing equipment SAR value Download PDFInfo
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- CN205680776U CN205680776U CN201620656061.8U CN201620656061U CN205680776U CN 205680776 U CN205680776 U CN 205680776U CN 201620656061 U CN201620656061 U CN 201620656061U CN 205680776 U CN205680776 U CN 205680776U
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Abstract
This utility model provides a kind of antenna reducing equipment SAR value, including main circuit board and antenna circuit board, described main circuit board is provided with adjustable power divider and the first antenna matching network being connected with adjustable power divider respectively and the second antenna matching network；The tow sides of described antenna circuit board are printed with first antenna and the second antenna respectively, and described first antenna is connected with first antenna matching network；Described second antenna and the second antenna matching network connect.Antenna is printed on the tow sides of antenna circuit board by this utility model, it is not necessary to extra increase antenna element and increase device around antenna, simplifies Antenna Design, has saved space；And the regulation that this utility model is by power division network, the reconstruct of antenna radiation pattern can be realized, it is possible to be further advanced by the regulation in aerial radiation direction, effectively reduce SAR value；Additionally this utility model debugging is flexibly, and to antenna cabling, matching element is finely adjusted and can optimize antenna performance.
Description
Technical field
This utility model relates to antenna, particularly relates to a kind of antenna reducing equipment SAR value.
Background technology
Specific absorption rate of electromagnetic radiation (Specific Absorption Ratio, SAR) refers to unit mass in the unit interval
The electromagnetic radiation energy of material absorbing, is to measure the mobile device Radiation On Human bodies such as mobile phone to affect the important parameter of size.Moving
During dynamic equipment networking certification, the SAR value of mobile device being had strict requirements, the most international SAR value standard has two
Individual, one is European standard 2w/kg, and one is Unite States Standard 1.6w/kg, and its concrete meaning refers to, with 6 minutes as timing, often
The electromagnetic radiation energy that kilogram tissue absorbs must not exceed 2 watts or 1.6 watts.
For mobile device, it needs the SAR value ensureing its antenna to meet above-mentioned standard, therefore reduces mobile device
The SAR value of antenna then seems particularly significant.Reduce antenna SAR value at present and mainly include in the following manner: one, by unit around antenna
The distribution of device, changes the CURRENT DISTRIBUTION on antenna area mainboard, thus changes aerial radiation peak value；But this mode is debugged
Complexity is high, it is achieved difficulty.Two, by distance-sensor, when sensor sensing to human body is close together with equipment, sky can be reduced
The transmitting power of line transceiver, to reduce the purpose of SAR value；This mode can reduce the performance of antenna, generally launches merit
Rate reduces 1dB, and SAR value reduces 0.3W/Kg, launches power reduction and can cause the hydraulic performance decline of antenna, launches power low to certain
Degree even can make equipment to communicate.Three, two or more antenna elements are utilized to carry out the reconfigurable antenna of design direction figure, logical
Crossing beam scanning to regulate some region of SAR value, this mode adds the area of antenna area, and the extra antenna increased is also
Manufacturing cost can be improved.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of simple in construction, and flexibly, performance is good simultaneously in debugging
Good, and can effectively reduce the antenna of equipment SAR value.
For achieving the above object, this utility model mainly adopts the following technical scheme that
A kind of antenna reducing equipment SAR value, including main circuit board and antenna circuit board, described main circuit board is provided with
Adjustable power divider and the first antenna matching network being connected with adjustable power divider respectively and the second antenna matching network；Described
The tow sides of antenna circuit board are printed with first antenna and the second antenna, described first antenna and first antenna pair net respectively
Network connects；Described second antenna and the second antenna matching network connect.
Preferably, described main circuit board is provided with the transceiver being connected with described adjustable power divider.
Preferably, described antenna circuit board includes being positioned at the upper wiring layer in front, being positioned at the lower line layer at the back side and be positioned at
Middle stratum, described first antenna is printed on upper wiring layer, and described second antenna is printed on lower line layer.
Preferably, described first antenna and the second antenna are rectangle, circle or other polygonized structures.
Preferably, described antenna circuit board is provided with the feed that feeding transmission line is connected with described adjustable power divider
Point, this distributing point is fed by first antenna described in the first microstrip line or coaxial pair and by the second microstrip line or coaxial
Line is to described second antenna feed.
This utility model compared with prior art, has the beneficial effects that: what this utility model provided reduces equipment SAR value
Antenna, is printed on the tow sides of antenna circuit board by antenna, it is not necessary to extra increase antenna element and increase around antenna
Device, simplifies Antenna Design, has saved space；And the regulation that this utility model is by power division network, antenna side can be realized
To the reconstruct of figure, it is possible to be further advanced by the regulation in aerial radiation direction, effectively reduce SAR value；Additionally this utility model is adjusted
Flexibly, to antenna cabling, matching element is finely adjusted and can optimize antenna performance in examination.
Accompanying drawing explanation
Fig. 1 is the attachment structure schematic diagram between this utility model antenna circuit board and main circuit board；
Fig. 2 is the structural representation of this utility model antenna circuit board；
Fig. 3 is this utility model antenna XOZ surface radiation directional diagram.
Identifier declaration in figure: main circuit board 100, transceiver 101, adjustable power divider 102, first antenna matching network 103,
Second antenna matching network 104, antenna circuit board 200, first antenna the 201, first microstrip line the 2011, second antenna 202, second
Microstrip line 2021, upper wiring layer 203, lower line layer 204.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
Have that debugging complexity is high, realize difficulty, launch power reduction can cause for reducing at present antenna SAR value mode
Hydraulic performance decline and the extra antenna increased of antenna can improve the problems such as manufacturing cost, the utility model proposes one and pass through
Power division network regulates, it is achieved antenna radiation pattern reconstructs, and by the regulation in aerial radiation direction, is effectively reduced the antenna of SAR value.
Referring to shown in Fig. 1, Fig. 1 is the attachment structure signal between this utility model antenna circuit board and main circuit board
Figure.
As a example by mobile phone, this utility model reduces the antenna of equipment SAR value, including main circuit board 100 and antenna circuit board
200.Wherein on main circuit board 100, correspondence is welded with transceiver 101 and adjustable power divider 102, and is printed with formation first day
Lines matching network 103 and the match circuit of the second antenna matching network 104.
Transceiver 101 is mainly used in realizing the reception of mobile phone signal and emission function, and by its blue tooth interface with
The Intelligent treatment equipment of other band bluetooth communicates, it is achieved cell-phone function.Mainly by mobile phone signal transmitter module and reception mould
Block two large divisions forms, and mobile phone signal transmitter module mainly comprises: modulate and launch translation circuit, power amplifier, antenna electric
Road and bluetooth processing module, mobile phone signal receiver module mainly comprises: antenna circuit, radio-frequency filter, low-noise amplifier, frequently
Rate converter unit and bluetooth processing module.Transceiver 101 is connected with adjustable power divider 102, adjustable power divider 102 connect respectively with
First antenna matching network 103 and the circuit of the second antenna matching network 104 Corresponding matching.
As in figure 2 it is shown, the structural representation that Fig. 2 is this utility model antenna circuit board.Antenna circuit board 200 is double-deck line
Road plate, it includes and is positioned at the upper wiring layer 203 in front, is positioned at the lower line layer 204 at the back side and is positioned at the ground path of centre
Layer, wherein upper wiring layer 203 is printed with first antenna 201, and lower line layer 204 is printed with the second antenna 202；First antenna 201
It is connected with first antenna matching network 103；Second antenna 202 is connected with the second antenna matching network 104.
In the present embodiment, first antenna 201 and the second antenna 202 are rectangle, and in other embodiments first antenna and
Second antenna can also be circular or other polygonized structures.
The distributing point that feeding transmission line is connected it is provided with described adjustable power divider 102 on antenna circuit board 200, should
Distributing point can be arranged on the edge of antenna circuit board 200, and adjustable power divider 102 is by this distributing point and the first microstrip line 2011
First antenna 201 is fed, and by this distributing point and the second microstrip line 2021, second antenna 202 is fed.
It should be noted that above-mentioned distributing point can also be arranged on any suitable location of antenna circuit board 200, and this
Time, distributing point is then fed by first antenna the 201, second antenna 202 described in coaxial pair.
Owing to first antenna the 201, second antenna 202 is all to connect adjustable power divider through distributing point and feeding transmission line
102, therefore can be carried out the regulation of power-division ratios by adjustable power divider 102, thus realize the reconstruction property of antenna radiation pattern,
And by the regulation to radiation pattern, then can be effectively reduced SAR value.
As it is shown on figure 3, Fig. 3 is the work of this utility model single antenna and antenna 1, the branch power distribution ratio difference of antenna 2
For antenna XOZ surface radiation directional diagram when 1:1,1:4.When single antenna 1 works, in aerial radiation direction set, beam angle is about
85 °, there is stronger directivity.Time antenna when following table is antenna 1, antenna 2 branch power distribution ratio is respectively 1:1,1:4
SAR value, during calculating, the positive surface antenna of pcb board 1 is towards human body, away from human body 5mm.
From in upper table, when antenna 1, antenna 2 work simultaneously, and power-division ratios is that antenna SAR value during 1:4 reduces
To 0.67W/Kg, therefore regulating power-division ratios by adjustable power divider is can effectively to reduce the SAR value of antenna.
In sum, this utility model is regulated by power division network, it is achieved antenna radiation pattern reconstructs, by aerial radiation side
To regulation, be effectively reduced the antenna of SAR value；And this utility model antenna radiator is printed on positive and negative the two of wiring board
Face, it is not necessary to extra increase antenna element and increase device around antenna, simplifies Antenna Design, has saved space.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (5)
1. the antenna reducing equipment SAR value, it is characterised in that include main circuit board (100) and antenna circuit board (200),
Adjustable power divider (102) and be connected respectively first it is provided with adjustable power divider (102) on described main circuit board (100)
Antenna matching network (103) and the second antenna matching network (104)；The tow sides of described antenna circuit board (200) print respectively
Being shaped with first antenna (201) and the second antenna (202), described first antenna (201) is with first antenna matching network (103) even
Connect；Described second antenna (202) is connected with the second antenna matching network (104).
2. the antenna reducing equipment SAR value as claimed in claim 1, it is characterised in that described main circuit board (100) is upper to be arranged
There is the transceiver (101) being connected with described adjustable power divider (102).
3. the antenna reducing equipment SAR value as claimed in claim 2, it is characterised in that described antenna circuit board (200) includes
The upper wiring layer (203) being positioned at front, the lower line layer (204) being positioned at the back side and be positioned at centre stratum, described first antenna
(201) being printed on upper wiring layer (203), described second antenna (202) is printed on lower line layer (204).
4. the antenna reducing equipment SAR value as claimed in claim 3, it is characterised in that described first antenna (201) and second
Antenna (202) is rectangle, circle or other polygonized structures.
5. the antenna reducing equipment SAR value as claimed in claim 4, it is characterised in that described antenna circuit board sets on (200)
Being equipped with the distributing point being connected by feeding transmission line with described adjustable power divider (102), this distributing point passes through the first microstrip line
Or first antenna described in coaxial pair (201) feed and by described in the second microstrip line (2021) or coaxial pair (2011)
Second antenna (202) feeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620656061.8U CN205680776U (en) | 2016-06-28 | 2016-06-28 | A kind of antenna reducing equipment SAR value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620656061.8U CN205680776U (en) | 2016-06-28 | 2016-06-28 | A kind of antenna reducing equipment SAR value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205680776U true CN205680776U (en) | 2016-11-09 |
Family
ID=57429580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620656061.8U Active CN205680776U (en) | 2016-06-28 | 2016-06-28 | A kind of antenna reducing equipment SAR value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205680776U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025507A (en) * | 2016-06-28 | 2016-10-12 | 深圳市信维通信股份有限公司 | Antenna capable of reducing equipment SAR value |
| CN106872805A (en) * | 2017-01-25 | 2017-06-20 | 维沃移动通信有限公司 | A kind of method and mobile terminal for reducing specific absorption rate |
| CN106921765A (en) * | 2017-01-19 | 2017-07-04 | 瑞声科技(新加坡)有限公司 | Reduce the antenna system and its control method, control device of SAR value |
| CN107895838A (en) * | 2017-11-30 | 2018-04-10 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN107968671A (en) * | 2017-11-23 | 2018-04-27 | 广东欧珀移动通信有限公司 | Antenna module, terminal device and improvement aerial radiation refer to calibration method |
| CN109343054A (en) * | 2018-09-18 | 2019-02-15 | 北京华航无线电测量研究所 | A kind of light-duty through-wall imaging radar |
-
2016
- 2016-06-28 CN CN201620656061.8U patent/CN205680776U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025507A (en) * | 2016-06-28 | 2016-10-12 | 深圳市信维通信股份有限公司 | Antenna capable of reducing equipment SAR value |
| CN106921765A (en) * | 2017-01-19 | 2017-07-04 | 瑞声科技(新加坡)有限公司 | Reduce the antenna system and its control method, control device of SAR value |
| CN106872805A (en) * | 2017-01-25 | 2017-06-20 | 维沃移动通信有限公司 | A kind of method and mobile terminal for reducing specific absorption rate |
| CN107968671A (en) * | 2017-11-23 | 2018-04-27 | 广东欧珀移动通信有限公司 | Antenna module, terminal device and improvement aerial radiation refer to calibration method |
| CN107895838A (en) * | 2017-11-30 | 2018-04-10 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN109343054A (en) * | 2018-09-18 | 2019-02-15 | 北京华航无线电测量研究所 | A kind of light-duty through-wall imaging radar |
| CN109343054B (en) * | 2018-09-18 | 2020-11-06 | 北京华航无线电测量研究所 | Light-duty wall-through imaging radar |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |