CN106025507A - Antenna capable of reducing equipment SAR value - Google Patents
Antenna capable of reducing equipment SAR value Download PDFInfo
- Publication number
- CN106025507A CN106025507A CN201610481005.XA CN201610481005A CN106025507A CN 106025507 A CN106025507 A CN 106025507A CN 201610481005 A CN201610481005 A CN 201610481005A CN 106025507 A CN106025507 A CN 106025507A
- Authority
- CN
- China
- Prior art keywords
- antenna
- circuit board
- sar value
- matching network
- power divider
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/245—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides an antenna capable of reducing an equipment SAR value. The antenna comprises a main circuit board and an antenna circuit board, wherein an adjustable power divider, and a first antenna matching network and a second antenna matching network respectively connected with the adjustable power divider are arranged on the main circuit board, a first antenna and a second antenna are respectively printed on the front and back sides of the antenna circuit board, the first antenna is connected with the first antenna matching network, and the second antenna is connected with the second antenna matching network. Antennas are printed on the front and back sides of an antenna circuit board, and no extra antenna units or devices added on the surrounding of an antenna are needed, thereby simplifying antenna design and saving space. Reconstruction of an antenna directional diagram can be realized through adjusting of a power division network. The SAR value can be effectively reduced through further adjusting antenna radiation direction. Commissioning is flexible, and the performance of an antenna can be optimized by fine tuning antenna wiring and matching elements.
Description
Technical field
The present invention relates to antenna, particularly relate 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.
Summary of the invention
In view of the above problems, it is an object of the invention to provide a kind of simple in construction, debugging is flexibly, the most functional,
And can effectively reduce the antenna of equipment SAR value.
For achieving the above object, the present invention 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.
The present invention compared with prior art, has the beneficial effects that: the antenna reducing equipment SAR value that the present invention provides, will
Antenna is printed on the tow sides of antenna circuit board, it is not necessary to extra increase antenna element and increase device around antenna, letter
Change Antenna Design, save space；And the regulation that the present invention is by power division network, the reconstruct of antenna radiation pattern can be realized,
The regulation in aerial radiation direction can be further advanced by, effectively reduce SAR value；Additionally the present invention debugs flexibly, walks antenna
Line, matching element is finely adjusted and can optimize antenna performance.
Accompanying drawing explanation
Fig. 1 is the attachment structure schematic diagram between inventive antenna wiring board and main circuit board；
Fig. 2 is the structural representation of inventive antenna wiring board；
Fig. 3 is inventive 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 the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
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, and the present invention is proposed one and divided by merit
Network adjustment, 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 schematic diagram between inventive antenna wiring board and main circuit board.
As a example by mobile phone, the present invention 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 antenna
Distribution 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 inventive antenna wiring board.Antenna circuit board 200 is double-deck circuit
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 earthing circuit layer of centre,
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 and
One antenna matching network 103 connects；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 single antenna of the present invention work and the branch power distribution ratio of antenna 1, antenna 2 is respectively 1:
1, antenna XOZ surface radiation directional diagram during 1:4.When single antenna 1 works, in aerial radiation direction set, beam angle is about 85 °,
There is stronger directivity.Time antenna SAR value when following table is antenna 1, antenna 2 branch power distribution ratio is respectively 1:1,1:4,
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, the present invention is regulated by power division network, it is achieved antenna radiation pattern reconstructs, by aerial radiation direction
Regulation, is effectively reduced the antenna of SAR value；And inventive antenna radiant body is printed on the tow sides of wiring board, it is not necessary to
Additionally increase antenna element and around antenna, increase device, simplifying Antenna Design, saved space.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
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 |
|---|---|---|---|
| CN201610481005.XA CN106025507A (en) | 2016-06-28 | 2016-06-28 | Antenna capable of reducing equipment SAR value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610481005.XA CN106025507A (en) | 2016-06-28 | 2016-06-28 | Antenna capable of reducing equipment SAR value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106025507A true CN106025507A (en) | 2016-10-12 |
Family
ID=57083940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610481005.XA Pending CN106025507A (en) | 2016-06-28 | 2016-06-28 | Antenna capable of reducing equipment SAR value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106025507A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656360A (en) * | 2016-12-30 | 2017-05-10 | 维沃移动通信有限公司 | Antenna system and mobile terminal |
| CN107046175A (en) * | 2017-02-09 | 2017-08-15 | 深圳微迎智科技有限公司 | Aerial array and radio communication device |
| 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 |
| CN110546811A (en) * | 2017-04-24 | 2019-12-06 | 惠普发展公司，有限责任合伙企业 | Tunable capacitor for controlling antenna radiation pattern |
| WO2023221499A1 (en) * | 2022-05-16 | 2023-11-23 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
Citations (6)
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|---|---|---|---|---|
| US6084548A (en) * | 1997-12-15 | 2000-07-04 | Hirabe; Masashi | Micro-strip antenna |
| US20020011957A1 (en) * | 1999-05-21 | 2002-01-31 | Lisa Davis | Method and apparatus for reducing electromagnetic radiation emission |
| CN201616502U (en) * | 2009-12-21 | 2010-10-27 | 普尔思（苏州）无线通讯产品有限公司 | Antenna |
| CN102623791A (en) * | 2011-01-28 | 2012-08-01 | 深圳富泰宏精密工业有限公司 | Communication device and antenna feature adjustment method thereof |
| CN103748803A (en) * | 2011-08-23 | 2014-04-23 | 谷歌公司 | Method and system for use of quadrature hybrids for closed and open loop beam forming transmit diversity |
| CN205680776U (en) * | 2016-06-28 | 2016-11-09 | 深圳市信维通信股份有限公司 | A kind of antenna reducing equipment SAR value |
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2016
- 2016-06-28 CN CN201610481005.XA patent/CN106025507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6084548A (en) * | 1997-12-15 | 2000-07-04 | Hirabe; Masashi | Micro-strip antenna |
| US20020011957A1 (en) * | 1999-05-21 | 2002-01-31 | Lisa Davis | Method and apparatus for reducing electromagnetic radiation emission |
| CN201616502U (en) * | 2009-12-21 | 2010-10-27 | 普尔思（苏州）无线通讯产品有限公司 | Antenna |
| CN102623791A (en) * | 2011-01-28 | 2012-08-01 | 深圳富泰宏精密工业有限公司 | Communication device and antenna feature adjustment method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656360A (en) * | 2016-12-30 | 2017-05-10 | 维沃移动通信有限公司 | Antenna system and mobile terminal |
| CN106656360B (en) * | 2016-12-30 | 2019-10-15 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN107046175A (en) * | 2017-02-09 | 2017-08-15 | 深圳微迎智科技有限公司 | Aerial array and radio communication device |
| CN110546811A (en) * | 2017-04-24 | 2019-12-06 | 惠普发展公司，有限责任合伙企业 | Tunable capacitor for controlling antenna radiation pattern |
| CN110546811B (en) * | 2017-04-24 | 2021-11-05 | 惠普发展公司，有限责任合伙企业 | Method for controlling radiation pattern of antenna, communication device and storage medium |
| 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 |
| WO2023221499A1 (en) * | 2022-05-16 | 2023-11-23 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
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| RJ01 | Rejection of invention patent application after publication |