CN202333125U - Built-in antenna structure capable of reducing SAR (specific absorption rate) value of mobile terminal effectively - Google Patents
Built-in antenna structure capable of reducing SAR (specific absorption rate) value of mobile terminal effectively Download PDFInfo
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- CN202333125U CN202333125U CN 201120438484 CN201120438484U CN202333125U CN 202333125 U CN202333125 U CN 202333125U CN 201120438484 CN201120438484 CN 201120438484 CN 201120438484 U CN201120438484 U CN 201120438484U CN 202333125 U CN202333125 U CN 202333125U
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Abstract
The utility model discloses a built-in antenna structure capable of reducing SAR (specific absorption rate) value of a mobile terminal effectively, wherein the built-in antenna structure comprises a main board, an electric feeding point and a single-arm antenna; the main board is connected with the single-arm antenna through the electric feeding point; the distance between the starting point end and the tail end of the single-arm antenna is not greater than 5mm, wherein the single-arm antenna 13 can be the antenna of a single pole sub type or a planar inverted F antenna (PIFA) type or an IFA (inverted F antenna) type and the like. During the particular implementation, the position of the single-arm antenna can be random, such as the single-arm antenna can be positioned at the region above the main board (the mobile terminal), in the middle region of the main board, or at the region below the main board. Compared with the prior art, according to the utility model, the SAR value can be reduced effectively; the built-in antenna structure provided by the utility model is simple in structure, and is short in design period; and the built-in antenna structure provided by the utility model has small occupied space, and can reduce the space utilized by the antenna effectively.
Description
Technical field
The utility model relates to mobile terminal antenna, particularly a kind of built-in antenna arrangement that can effectively reduce the SAR value of portable terminal.
Background technology
The SAR value is a specific absorption rate, and it is average to clock with any 6 minutes, the electromagnetic radiation energy that the per kilogram tissue absorbs (watt).With the mobile phone radiation is example, and SAR refers to radiation by the ratio of the soft tissue absorbed of head, and the SAR value is low more, and radiation is few more by the amount that brain absorbs.Mobile phone radiation is weighed by the SAR value.
Present increasing market has proposed requirement to the SAR of portable terminal, and the SAR requirement all must be satisfied in a lot of terminals, and the design aspect of antenna need be paid close attention to the index of SAR more.
Like Fig. 1, common mobile terminal antenna realization double frequency or the multifrequency normally structure of multi-arm realize that different frequency ranges is as shown in Figure 1: mainboard (1) passes through (2) feed on two arms (3) and (4) of antenna.The mode that realizes double frequency or multifrequency increases forms realizations such as parasitic element or coupling in addition.The antenna SAR value of these forms is generally all higher.Many times satisfied not the index request of SAR value.
The utility model content
In order to overcome the defective of prior art; The utility model discloses a kind of built-in antenna arrangement that can effectively reduce the SAR value of portable terminal, it has solved, and mobile terminal antenna designs the technical problem that has many times satisfied not the index request of SAR value in the prior art.
The technical scheme of the utility model is following:
A kind of built-in antenna arrangement that can effectively reduce the SAR value of portable terminal comprises mainboard, distributing point, single armed antenna; Said mainboard is connected with said single armed antenna through distributing point; The starting point end of said single armed antenna and the distance between the end are no more than 5mm.
Preferably, said single armed antenna be following type one of them: monopole antenna, dipole antenna, planar inverted-F antenna, IFA antenna.
Preferably, said single armed antenna is the Wide antenna that live width is not less than 0.5mm.
Preferably, said single armed antenna is the narrow antenna of live width less than 0.5mm.
Preferably, also comprise impedance matching, said distributing point is connected with said single armed antenna through impedance matching.
Preferably, said single armed antenna can be positioned at the upper area of mainboard.
Preferably, said single armed antenna can be positioned at the lower zone of mainboard.
Preferably, said single armed antenna can be positioned at the zone line of mainboard.
Preferably, said single armed antenna through certainly the coupling mode and be aided with two resonance frequencys that impedance matching produces antenna respectively.
Compared with prior art, the beneficial effect of the utility model is following:
The first, the utility model effectively reduces the SAR value through changing antenna cabling itself.
The second, the design of the special antenna structure of the utility model takes up room for a short time, effectively reduces the used space of antenna.
Three, the utility model is simple in structure, and the design cycle is short.
Description of drawings
Fig. 1 is common antenna configuration sketch map;
Fig. 2 can effectively reduce the sketch map of built-in antenna arrangement of the SAR value of portable terminal for the utility model specific embodiment a kind of.
Embodiment
A kind of built-in antenna arrangement that can effectively reduce the SAR value of portable terminal comprises mainboard, distributing point, single armed antenna; Said mainboard is connected with said single armed antenna through distributing point; The starting point end of said single armed antenna and the distance between the end are no more than 5mm.
The below combines accompanying drawing and specific embodiment that the utility model is done further description.
Embodiment
Like Fig. 2, a kind of built-in antenna arrangement that can effectively reduce the SAR value of portable terminal comprises mainboard 11, distributing point 12, single armed antenna 13; Mainboard 11 is connected with single armed antenna 13 through distributing point 12; The starting point end and the distance between the end of single armed antenna 13 are very little, and the two forms very little opening, and the distance of the two is no more than 5mm.
In the present embodiment, above-mentioned built-in antenna arrangement also comprises impedance matching 14, and distributing point 12 is connected with single armed antenna 13 through impedance matching 14.Here be merely for example, during practical implementation, it is also passable not add impedance matching, and the utility model is not made qualification to this.
In the present embodiment, mainboard 11 is a mobile phone PCB mainboard, and it carries out feed through 12 pairs of single armed antennas of distributing point 13.
Single armed antenna 13 can be the antenna of monopole form or planar inverted-F antenna (PIFA) form or IFA form, and in the present embodiment, single armed antenna 13 is a monopole antenna.Single armed antenna 13 has two transmit frequency bands, its through certainly the coupling mode and be aided with two resonance band that impedance matching 14 produces antenna respectively.Thereby single armed antenna 13 CURRENT DISTRIBUTION change with common multi-arm antenna different antenna patterns that make on CURRENT DISTRIBUTION; The maximum deviation in driction user that suitable adjusting makes directional diagram is (in the present embodiment; The user is the caller) head or health, can effectively reduce the numerical value of SAR.
In the present embodiment, the single armed antenna is the Wide antenna that live width is not less than 0.5mm.Be merely for example, during practical implementation, the single armed antenna also can be the narrow antenna of live width less than 0.5mm, and the utility model is not made qualification to this.
In the present embodiment, single armed antenna 13 is positioned at the lower zone of mainboard 11.Be merely for example, during practical implementation, the position of single armed antenna 13 can be random, for example can be at upper area, zone line or the lower zone of mainboard (portable terminal), and the utility model is not made qualification to this.
To present embodiment, the performance of single armed antenna and bifilar is compared, referring to following table 1 and table 2.Wherein, table 1 is the performance table of bifilar, and table 2 is the performance table of single armed antenna.Wherein, GSM850 and PCS1900 represent two frequency ranges, and SAR representes the SAR value of antenna of a certain channel of corresponding a certain frequency range.
Table 1
Table 2
Can find out from table 1 and table 2, the same channel of same frequency range, the SAR value of single armed antenna is less than the SAR value of bifilar.Being example at the PCS1900 communication frequency band, when single armed antenna and bifilar the TRP of 661 channels about the same (single armed be 27.2, both arms be 27.4) situation under, a left side SAR is respectively: single armed 0.82, both arms are 1.33.This shows that under the suitable situation of TRP the SAR value of single armed antenna is than the SAR value low about 0.5 of bifilar.Be in the present embodiment, on a mobile phone, use the SAR value of bifilar and single armed antenna to compare respectively, under the equal TRP situation, PCS frequency range SAR value reduces about 0.5MW/KG.
The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this utility model yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiment are chosen and specifically described to this specification, is principle and practical application in order to explain the utility model better, thereby person skilled can be utilized the utility model well under making.The utility model only receives the restriction of claims and four corner and equivalent.
Claims (9)
1. the built-in antenna arrangement that can effectively reduce the SAR value of portable terminal is characterized in that, comprises mainboard, distributing point, single armed antenna; Said mainboard is connected with said single armed antenna through distributing point; The starting point end of said single armed antenna and the distance between the end are no more than 5mm.
2. built-in antenna arrangement according to claim 1 is characterized in that, said single armed antenna is one of them of following type: monopole antenna, dipole antenna, planar inverted-F antenna, IFA antenna.
3. built-in antenna arrangement according to claim 1 is characterized in that, said single armed antenna is the Wide antenna that live width is not less than 0.5mm.
4. built-in antenna arrangement according to claim 1 is characterized in that, said single armed antenna is the narrow antenna of live width less than 0.5mm.
5. built-in antenna arrangement according to claim 1 is characterized in that, also comprises impedance matching, and said distributing point is connected with said single armed antenna through impedance matching.
6. built-in antenna arrangement according to claim 1 is characterized in that said single armed antenna can be positioned at the upper area of mainboard.
7. built-in antenna arrangement according to claim 1 is characterized in that said single armed antenna can be positioned at the lower zone of mainboard.
8. built-in antenna arrangement according to claim 1 is characterized in that said single armed antenna can be positioned at the zone line of mainboard.
9. according to claim 1 or 5 described built-in antenna arrangement, it is characterized in that, said single armed antenna through certainly the coupling mode and be aided with two resonance frequencys that impedance matching produces antenna respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120438484 CN202333125U (en) | 2011-11-08 | 2011-11-08 | Built-in antenna structure capable of reducing SAR (specific absorption rate) value of mobile terminal effectively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120438484 CN202333125U (en) | 2011-11-08 | 2011-11-08 | Built-in antenna structure capable of reducing SAR (specific absorption rate) value of mobile terminal effectively |
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| CN202333125U true CN202333125U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120438484 Expired - Fee Related CN202333125U (en) | 2011-11-08 | 2011-11-08 | Built-in antenna structure capable of reducing SAR (specific absorption rate) value of mobile terminal effectively |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529525A (en) * | 2014-10-21 | 2016-04-27 | 中兴通讯股份有限公司 | Antenna structure |
| WO2016061997A1 (en) * | 2014-10-21 | 2016-04-28 | 中兴通讯股份有限公司 | Antenna structure |
| CN105811088A (en) * | 2016-03-22 | 2016-07-27 | 歌尔声学股份有限公司 | Antenna device and mobile terminal |
| CN108417970A (en) * | 2018-02-28 | 2018-08-17 | 深圳创维无线技术有限公司 | Multifrequency built-in aerial and wireless terminal |
-
2011
- 2011-11-08 CN CN 201120438484 patent/CN202333125U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529525A (en) * | 2014-10-21 | 2016-04-27 | 中兴通讯股份有限公司 | Antenna structure |
| WO2016061997A1 (en) * | 2014-10-21 | 2016-04-28 | 中兴通讯股份有限公司 | Antenna structure |
| CN105811088A (en) * | 2016-03-22 | 2016-07-27 | 歌尔声学股份有限公司 | Antenna device and mobile terminal |
| CN108417970A (en) * | 2018-02-28 | 2018-08-17 | 深圳创维无线技术有限公司 | Multifrequency built-in aerial and wireless terminal |
| CN108417970B (en) * | 2018-02-28 | 2020-10-27 | 深圳创维无线技术有限公司 | Multi-frequency built-in antenna and wireless terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |