CN103872427B - Antenna structure - Google Patents
Antenna structure Download PDFInfo
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- CN103872427B CN103872427B CN201210551793.7A CN201210551793A CN103872427B CN 103872427 B CN103872427 B CN 103872427B CN 201210551793 A CN201210551793 A CN 201210551793A CN 103872427 B CN103872427 B CN 103872427B
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- metal derby
- radiant body
- antenna structure
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Abstract
The invention provides a kind of antenna structure, this antenna structure comprises: mobile electronic device and antenna. On this mobile electronic device, there is housing, in this housing, there is accommodation space and at least one metal derby. This antenna is installed in this accommodation space, on this antenna, has radiant body, has open end and signal feed-in point on this radiant body. Wherein, the open end of this radiant body, towards this metal derby, is formed as the distance of 1/8th to 1/2nd wavelength of the communication band of using between this signal feed-in point and this metal derby. Whereby, not only make metal derby there is original reinforcing effect, can also reach the effect of low SAR value simultaneously, and then reduce the injury of the Radiation On Human body of antenna.
Description
Technical field
The present invention is about a kind of antenna, espespecially a kind of specific absorption ratio (Specific of low electromagnetic wave energyAbsorptionRate, SAR) value antenna structure.
Background technology
Along with the continuous lifting of science and technology, many mobile electronic devices produce in succession, as sold on the market nowPanel computer. Because the volume of panel computer is compact, and easy to carry, therefore extensively by every profession and tradeAnd constituent parts is bought and uses.
In the time that product will be purchased by relevant unit, this product all must be through strict inspection, at the item of inspectionIn order, comprise drop, shockproof, high low temperature running, electromagnetic interference (ElectroMagneticInterference,EMI)/electromagnetic compatibility (ElectroMagneticCompatibility, EMC) disturbs etc., in these inspectionsIn project, drop test and will carry out to this product the test of dropping of 26 point-line-surfaces. Because product is being droppedWhen test, the corner of the housing of product is all the position of most fragile, therefore has a lot of products all cannot pass throughDrop the inspection of regulation, therefore for by the inspection of this regulation, the be everlasting housing of this product of insiderInternal corners increases metal derby or the metal device of reinforcement, increases the gold of reinforcement in the internal corners of this housingBelong to after piece or metal device, can increase the structural strength of machine itself, reach the object by dropping specification.
Although the metal derby or the metal device that increase reinforcement in the internal corners of the housing of product can be by fallingThe inspection of the regulation that falls, but this metal derby or metal device can make antenna SAR value improve, and cannot pass through FCCThe detection of (FederalCommunicationsCommission, FCC) SAR regulation.
Summary of the invention
In view of this, main purpose of the present invention is to solve above-mentioned shortcoming, and the present invention is by changing antennaThe direction of the end (open end) of radiant body, not only makes metal derby have original reinforcing effect, also simultaneouslyCan reach the effect of low SAR value, and then reduce the injury of the Radiation On Human body of antenna.
For achieving the above object, the invention provides a kind of antenna structure, this antenna structure comprises mobile electronicDevice and antenna, have housing on described mobile electronic device, has accommodation space and at least in this housingA metal derby; Described antenna is installed in described accommodation space, on described antenna, has radiant body, this spokeOn beam, there is open end and signal feed-in point; Wherein, the described open end of described antenna is towards described metalPiece, and described signal feed-in point to the current path of described metal derby be use communication band 1/8thTo 1/2nd wavelength.
Further, have more than two corner on described accommodation space, described metal derby is positioned at described cornerOn.
Further, described accommodation space has the installation region that described antenna is installed.
Further, described metal derby is positioned on the described corner on described antenna side.
Further, described radiant body is formed by connecting by more than two metal wire sections.
Further, described radiant body also includes end, the described open end that this end is described radiant body.
Further, described radiant body also includes front end.
Further, described antenna structure also includes grounding body, described in this grounding body and described radiant bodyFront end is electrically connected.
Further, described signal feed-in point is the communication band of utilization to the current path of described metal derbyQuarter-wave.
Compared with prior art, the present invention not only makes metal derby have original reinforcing effect, simultaneously can alsoReach the effect of low SAR value, and then reduce the injury of the Radiation On Human body of antenna.
Brief description of the drawings
Fig. 1 is the combination schematic diagram of antenna of the present invention and mobile electronic device;
Fig. 2 is that the combination master of antenna of the present invention and mobile electronic device looks schematic diagram;
Fig. 3 is the local enlarged diagram of Fig. 2;
Fig. 4 is the current path schematic diagram that antenna of the present invention is installed on mobile electronic device;
Fig. 5 is end (open end) (towards metal derby) and the court outwardly of the radiant body of antenna of the present inventionRelatively showing of the SAR value of the mobile electronic device top (TOP) that interior (not towards metal derby) measuresIntention;
Fig. 6 is end (open end) (towards metal derby) and the court outwardly of the radiant body of antenna of the present inventionThe comparison of the SAR value at the mobile electronic device back side (BACK) that interior (not towards metal derby) measuresSchematic diagram.
Description of reference numerals
Mobile electronic device 1 housing 11
Accommodation space 12 installation regions 121
Corner 122 circuit boards 13
Panel of LCD 14 edge parts 15
Metal derby 16 antennas 2
Radiant body 21 metal wire sections 211
Front end 212 ends 213
Signal feed-in point 214 grounding bodies 22
Current path 3
Detailed description of the invention
Relevant the technical content and a detailed description, will coordinate brief description of the drawings as follows, but appended accompanying drawingOnly as illustrative purposes, not for limiting to the present invention.
Please refer to Fig. 1, is the combination schematic diagram of antenna of the present invention and mobile electronic device. As shown in the figure:The antenna structure of low SAR value of the present invention comprises: mobile electronic device 1 and antenna 2.
On this mobile electronic device 1, there is housing 11, in this housing 11, there is accommodation space 12, this appearancePut space 12 in order to the assembly being associated with this mobile electronic device 1 to be installed, as circuit board 13 and liquid crystalDisplay pannel 14, or camera lens (not shown), or other spare part. When this circuit board 13 and this liquidWhen LCD panel 14 is installed on this accommodation space 12 in stacking mode, this circuit board 13 and this liquid crystalDisplay pannel 14 forms installation region 121 with the edge part 15 of this housing 11. In addition, this accommodation spaceOn 12, there is more than two corner 122, concrete, on this accommodation space 12, there are four corners 122, thisOn a little corners 122, respectively there is metal derby 16(or this metal derby 16 is positioned on the corner on antenna 2 sides), shouldMetal derby 16 is used for the intensity in these corners 122 that strengthen this housing 11. In the present embodiment, this movesFormula electronic installation 1 is panel computer or intelligent mobile phone.
This antenna 2 is installed in this installation region 121, and is positioned at a side of the metal derby 16 of upper right side reinforcement.This antenna 2 has radiant body 21 and grounding body 22. This radiant body 21 is connected by more than two metal wire sections 211Connect and form. On this radiant body 21, there is front end 212, end 213 and signal feed-in point 214, this front end 212Be electrically connected with this grounding body 22, this end 213 forms the open end of this antenna 2, this signal feed-in point214 are electrically connected with the copper axis of coaxial cable line (not shown) centre, and this grounding body 22 is with coaxialAfter the grounding parts of cable is electrically connected, then the other end of grounding parts by coaxial cable line is electrically connected toOn the housing 11 of mobile electronic device 1 and ground connection. In this figure, the grounding body 22 of antenna 2 and twoAbove metal wire sections 211 can be set up or reduce according to the characteristic of antenna 2 is required.
Please refer to Fig. 2 and Fig. 3, be respectively the combination master of antenna of the present invention and mobile electronic device depending on showingThe local enlarged diagram of intention and Fig. 2. As shown in the figure: when antenna 2 of the present invention is installed on this housing 11In installation region 121 and when adjacent with this top-right metal derby 16, the grounding body 22 of this antenna 2 withThe housing 11 of mobile electronic device 1 connect (connect by the mode of electrically conducting, for example Copper Foil paster orConducting foam etc.), or be connected to metal or the printed circuit board (PCB) of panel of LCD 14 belows of housing 11(Printedcircuitboard, PCB) ground connection place, or other can ground connection part. The radiant body of this antenna 221 end 213 is towards this top-right metal derby 16, and this signal feed-in point 214 is to top-right metal derby16 have certain distance, and this distance is about the distance of 1/8th to 1/2nd wavelength of the communication band of utilizationFrom.
In the time that this antenna 2 is installed on a side of this top-right metal derby 16, the radiant body 21 of this antenna 2End 213 towards this top-right metal derby 16, this signal feed-in point 214 is to top-right metal derby 16Forming an installation site that is about the distance of 1/8th to 1/2nd wavelength of the communication band of utilization closesBe to apply to the communication band [wireless wide area network (WirelessWideArea of 2G, 3G and 4GNetwork, WWAN), Long Term Evolution (LongTermEvolution, LTE)] system in, simultaneously canReduce SAR value, and then reduce the injury of the Radiation On Human body of antenna 2.
Please refer to Fig. 4, for antenna of the present invention is installed on the current path schematic diagram of mobile electronic device.As shown in the figure: grounding body 22, metal derby 16 at antenna 2 of the present invention are electrically connected and are installed on movable typeAfter the housing 11 of electronic installation 1, the open end of this antenna 2 is towards metal derby 16, the radiation of this antenna 2Eight of the communication band that signal feed-in point 214 on body 21 is utilization to the current path 3 of this metal derby 16/ mono-to 1/2nd wavelength, taking quarter-wave as best.
The end 213 of antenna 2 is towards the metal derby 16 in this corner, the signal feed-in point 214 on radiant body 21Be about 1/8th to 1/2nd wavelength of the communication band of utilization to the current path 3 of this metal derby 16,Taking quarter-wave as best. Therefore, can reduce in use SAR value, and then reduction antenna 2The injury of Radiation On Human body.
Please refer to Fig. 5, for the end (open end) of the radiant body of antenna of the present invention is outwardly (towards metalPiece) and the SAR value of (not towards metal derby) measures inwardly mobile electronic device top (TOP)Comparison schematic diagram, simultaneously with reference to shown in Fig. 2. As shown in the figure: when the present invention is used in WCDMAIn (WidebandCodeDivisionMultipleAccess, WCDMA) communication system time, conduction meritRate is 24dBm, and frequency is 1850MHZTime, when the end 213 (end inwardly of the radiant body 21 of antenna 2End 213 is not towards metal derby 16) time, the SAR value of this mobile electronic device 1 top measuring is4.76; When the end 213 of the radiant body 21 of antenna 2 is outwardly when (end 213 is towards metal derby 16), surveyThe SAR value of this mobile electronic device 1 top of measuring is 2.99, and this SAR value declines 37.18%.
Frequency is at 1880MHZTime, when the end 213 of the radiant body 21 of antenna 2, (end 213 is not inwardlyTowards strong metal piece 16) time, the SAR value of this mobile electronic device 1 top measuring is 5.08;When the end 213 of the radiant body 21 of antenna 2 is outwardly when (end 213 is towards metal derby 16), measureThe SAR value of this mobile electronic device 1 top be 2.97, this SAR value declines 41.53%.
Frequency is at 1910MHZTime, when the end 213 of the radiant body 21 of antenna 2, (end 213 is not inwardlyTowards metal derby 16) time, the SAR value of this mobile electronic device 1 top measuring is 5.5; The same dayThe end 213 of the radiant body 21 of line 2 is outwardly when (end 213 is towards metal derby 16), and what measure shouldThe SAR value of mobile electronic device 1 top is 3.4, and this SAR value declines 38.18%.
Please refer to Fig. 6, for the end (open end) of the radiant body of antenna of the present invention is outwardly (towards metalPiece) and the SAR at the mobile electronic device back side (BACK) that (not towards metal derby) measures inwardlyThe comparison schematic diagram of value, simultaneously with reference to shown in Fig. 2. As shown in the figure: lead to when the present invention is used in WCDMAOn communication system time, conducted power is 24dBm, and frequency is at 1850MHZTime, when the radiant body 21 of antenna 2End 213 inwardly when (end 213 is not towards metal derby 16), this mobile electronic device measuringThe SAR value at 1 back side is 2.14; When end 213 (end 213 courts outwardly of the radiant body 21 of antenna 2To metal derby 16) time, the SAR value at this mobile electronic device 1 back side measuring is 1.82, this SARValue declines 14.95%.
Frequency is at 1880MHZTime, when the end 213 of the radiant body 21 of antenna 2, (end 213 is not inwardlyTowards metal derby 16) time, the SAR value at this mobile electronic device 1 back side measuring is 2.26; WhenThe end 213 of the radiant body 21 of antenna 2 when (end 213 is towards metal derby 16), measures outwardlyThe SAR value at this mobile electronic device 1 back side is 1.87, and this SAR value declines 17.25%.
Frequency is at 1910MHZTime, when the end 213 of the radiant body 21 of antenna 2, (end 213 is not inwardlyTowards metal derby 16) time, the SAR value at this mobile electronic device 1 back side measuring is 2.4; The same dayThe end 213 of the radiant body 21 of line 2 is outwardly when (end 213 is towards metal derby 16), and what measure shouldThe SAR value at mobile electronic device 1 back side is 1.87, and this SAR value declines 22.08%.
The above, be only illustrating of preferred embodiment of the present invention, not of the present invention in order to limit toProtection domain, other any equivalent transformation all should belong to the application's claim scope.
Claims (7)
1. an antenna structure, is characterized in that, this antenna structure comprises:
Mobile electronic device, has housing, has accommodation space and at least one metal derby in this housing,Described accommodation space has the installation region that described antenna is installed, and has more than two angle on described accommodation spaceFall, described metal derby is positioned on described corner;
Antenna, is installed in described accommodation space, on this antenna, has radiant body, on this radiant body, has outTerminal and signal feed-in point;
Wherein, the described open end of described antenna is towards described metal derby, and described in described signal feed-in point arrivesThe current path of metal derby is 1/8th to 1/2nd wavelength of the communication band of utilization.
2. antenna structure as claimed in claim 1, is characterized in that, described metal derby is positioned at described antennaOn the described corner on side.
3. antenna structure as claimed in claim 2, is characterized in that, described radiant body is by more than two goldBelonging to segment link forms.
4. antenna structure as claimed in claim 3, is characterized in that, described radiant body also includes end,This end is the described open end of described radiant body.
5. antenna structure as claimed in claim 4, is characterized in that, described radiant body also includes front end.
6. antenna structure as claimed in claim 5, is characterized in that, this antenna structure also includes ground connectionBody, the described front end of this grounding body and described radiant body is electrically connected.
7. antenna structure as claimed in claim 6, is characterized in that, described signal feed-in point is to described goldThe current path that belongs to piece is the quarter-wave of the communication band of utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551793.7A CN103872427B (en) | 2012-12-18 | 2012-12-18 | Antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210551793.7A CN103872427B (en) | 2012-12-18 | 2012-12-18 | Antenna structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872427A CN103872427A (en) | 2014-06-18 |
| CN103872427B true CN103872427B (en) | 2016-05-18 |
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ID=50910715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210551793.7A Active CN103872427B (en) | 2012-12-18 | 2012-12-18 | Antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103872427B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7304616B1 (en) * | 2006-08-28 | 2007-12-04 | Cheng Uei Precision Industry Co., Ltd. | Antenna structure of mobile phone |
| CN102098070A (en) * | 2011-02-17 | 2011-06-15 | 上海安费诺永亿通讯电子有限公司 | Communication terminal capable of effectively reducing HAC/SAR of antenna |
| CN102291954A (en) * | 2010-06-21 | 2011-12-21 | 汉达精密电子(昆山)有限公司 | Composite shell structure |
-
2012
- 2012-12-18 CN CN201210551793.7A patent/CN103872427B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7304616B1 (en) * | 2006-08-28 | 2007-12-04 | Cheng Uei Precision Industry Co., Ltd. | Antenna structure of mobile phone |
| CN102291954A (en) * | 2010-06-21 | 2011-12-21 | 汉达精密电子(昆山)有限公司 | Composite shell structure |
| CN102098070A (en) * | 2011-02-17 | 2011-06-15 | 上海安费诺永亿通讯电子有限公司 | Communication terminal capable of effectively reducing HAC/SAR of antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103872427A (en) | 2014-06-18 |
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