CN206595383U - A kind of effective drop SAR mobile terminal antenna structure - Google Patents
A kind of effective drop SAR mobile terminal antenna structure Download PDFInfo
- Publication number
- CN206595383U CN206595383U CN201720161596.2U CN201720161596U CN206595383U CN 206595383 U CN206595383 U CN 206595383U CN 201720161596 U CN201720161596 U CN 201720161596U CN 206595383 U CN206595383 U CN 206595383U
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- China
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- mobile terminal
- mainboard
- antenna structure
- pifa
- frequency
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Abstract
The utility model discloses a kind of effective drop SAR mobile terminal antenna structure, including mainboard, the PIFA antennas that are arranged on the mainboard back side and the high-frequency branch for being arranged on mainboard side, the PIFA antennas are connected with high-frequency branch, the PIFA antennas include being arranged on the distributing point and earth point below high-frequency branch, the mainboard front is provided with empty regions, the empty regions corresponding to the position of back side distributing point and is equipped with conductive sponge.The utility model can be widely applied to various mobile terminal antenna structure the utility model on the one hand by increasing high frequency cabling branch, make homogeneous current distribution on antenna, it is to avoid produce SAR Peak values；Conductive sponge is sticked at the mainboard distributing point back side simultaneously, changes the directional diagram of antenna, so as to reduce SAR value.
Description
Technical field
The utility model is related to field of antenna, more particularly to a kind of antenna for mobile phone.
Background technology
SAR:Specific Absorption Rate, electromagnetic wave absorption rate/specific absorption rate.
TRP：Isotropically radiated power.
It is popular when the various facilities that Wireless Telecom Equipment is brought are enjoyed with the development of information technology, also increasingly close
Note influence of the electromagnetic radiation of wireless communication terminal to health.Research and development and testing field in antenna for mobile phone, antenna work
Cheng Shi is except concern TRP（Isotropically radiated power）, TIS（Total omnidirectional sensitivity）, RL（Return loss）, Efficiency（Efficiency）
In addition, another index is also focused on very much very much --- SAR（Specific Absorption Rate）.
SAR size indicates size of the electromagnetic radiation of mobile telephone to Health Impact.It is main in the design of antenna for mobile phone
It is concerned with influence of the electromagnetic radiation to human head of wireless communication terminal.The size of SAR value and the radiant power of mobile phone
Closely related, the size of usual SAR value is directly proportional to TRP, in the design, TRP and SAR inherently conflicts, therefore,
In the design, both relations need to be balanced well.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model be to provide one kind can effectively reduce antenna for mobile phone towards
The SAR value of cephalad direction, ensures the antenna structure of radiance again.
The technical scheme that the utility model is used is：
A kind of effective drop SAR mobile terminal antenna structure, including mainboard, the PIFA antennas being arranged on the mainboard back side and
The high-frequency branch of mainboard side is arranged on, the PIFA antennas are connected with high-frequency branch, the PIFA antennas include being arranged on height
Distributing point and earth point below frequency division branch, the mainboard front are provided with empty regions, institute corresponding to the position of back side distributing point
State and conductive sponge is equipped with empty regions.
It is preferred that, the PIFA aerial radiations frequency range includes GSM850 frequency ranges and PCS1900MHz frequency ranges.
It is preferred that, the PIFA antennas include radiant section and grounded part, and the radiant section is connected with distributing point, institute
Grounded part is stated to be connected with earth point.
It is preferred that, the PIFA antennas are arranged on the lower section of mobile terminal.
It is preferred that, the mobile terminal is mobile phone or tablet personal computer.
The beneficial effects of the utility model are：
The utility model makes homogeneous current distribution on antenna on the one hand by increasing high frequency cabling branch, it is to avoid produce SAR
Peak values；Conductive sponge is sticked at the mainboard distributing point back side simultaneously, changes the directional diagram of antenna, so as to reduce SAR value.
The utility model can be widely applied to various mobile terminal antenna structures.
Brief description of the drawings
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of embodiment Mobile terminal main board positive structure schematic of the utility model；
Fig. 2 is a kind of embodiment Mobile terminal main board structure schematic diagram of the utility model；
Fig. 3 is conventional mobile phone antenna and a kind of embodiment SAR value comparison diagram of the utility model.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
Technical problem to be solved in the utility model is to provide a kind of too high antenna of solution mobile terminal antenna SAR value
Structure.The size of SAR value and the radiant power of mobile phone are closely related, and the size of usual SAR value is directly proportional to TRP, in the design
TRP and SAR inherently conflict.In engineering test, mobile phone SAR value be mainly test its peak value it is whether exceeded, because
This directional diagram by changing antenna, reduces the electric current towards number of people direction, both can guarantee that TRP, can reduce SAR value again.
As depicted in figs. 1 and 2, by taking mobile phone as an example, a kind of effective drop SAR antenna structure of mobile phole, including mainboard, it is arranged on
PIFA antennas 201 on the mainboard back side 20 and the high-frequency branch 202 for being arranged on mainboard side, PIFA antennas 201 and high-frequency branch
202 connections, PIFA antennas 201 include the distributing point 301 and earth point 302 for being arranged on the lower section of high-frequency branch 202, mainboard front 10
Empty regions are provided with corresponding to the position of back side distributing point 301, conductive sponge 101 are equipped with empty regions.
Specifically, in the present embodiment, mobile phone primary antenna uses common PIFA antennas 201, and the cabling of PIFA antennas 201 is
The frequency range of debugging required for including（Including GSM850 frequency ranges and PCS1900MHz frequency ranges）.Specially increase high-frequency branch 202（It is high
Frequency cabling branch）, the high frequency cabling branch is coupled out high frequency standing wave（Mainly PCS1900MHz frequency ranges）, primarily serve change day
The effect of line directional diagram.In addition, the distributing point 301 of antenna and the back side empty regions of earth point 302 spread conduction on mainboard
Sponge 101, the directionality for changing antenna, while changing the distribution of electric current on mainboard, makes CURRENT DISTRIBUTION evenly, SAR peaks
Value reduces.
In the present embodiment, PIFA antennas 201 include radiant section 203 and grounded part 204, radiant section 203 and feed
Point 301 is connected, and grounded part 204 is connected with earth point 302.PIFA antennas 201 are arranged on the lower section of mobile phone, that is, are arranged on mobile phone
At microphone and COBBAIF.
As shown in figure 3, relative to traditional antenna for mobile phone, antenna for mobile phone after the present embodiment is handled in GSM850 and
PCS frequency ranges（Band）In each passage（Channel）On, the head left side（Right Head）With head the right（Left Head）
It is significant lower in the SAR value of 1g units, reduce influence of the mobile phone radiation to human body head so that effective.
The utility model makes homogeneous current distribution on antenna on the one hand by increasing high frequency cabling branch, it is to avoid produce SAR
Peak values；Conductive sponge 101 is sticked at the back side of mainboard distributing point 301 simultaneously, changes the directional diagram of antenna, so as to reduce SAR
Value.
The utility model can be widely applied to various antenna structure of mobile phole.
Above is preferable implementation of the present utility model is illustrated, but the invention is not limited to implement
Example, those skilled in the art can also be made on the premise of without prejudice to the utility model spirit a variety of equivalent variations or
Replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of effective drop SAR mobile terminal antenna structure, it is characterised in that including mainboard, be arranged on the mainboard back side
PIFA antennas and the high-frequency branch for being arranged on mainboard side, the PIFA antennas are connected with high-frequency branch, the PIFA antennas bag
The distributing point and earth point being arranged on below high-frequency branch are included, the mainboard front is provided with net corresponding to the position of back side distributing point
Conductive sponge is equipped with dummy section, the empty regions.
2. a kind of effective drop SAR according to claim 1 mobile terminal antenna structure, it is characterised in that the PIFA
Aerial radiation frequency range includes GSM850 frequency ranges and PCS1900MHz frequency ranges.
3. a kind of effective drop SAR according to claim 2 mobile terminal antenna structure, it is characterised in that the PIFA
Antenna includes radiant section and grounded part, and the radiant section is connected with distributing point, and the grounded part is connected with earth point.
4. a kind of effective drop SAR according to claim 3 mobile terminal antenna structure, it is characterised in that the PIFA
Antenna is arranged on the lower section of mobile terminal.
5. the mobile terminal antenna structure of effective drop SAR according to any one of Claims 1-4 a kind of, it is characterised in that
The mobile terminal is mobile phone or tablet personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720161596.2U CN206595383U (en) | 2017-02-22 | 2017-02-22 | A kind of effective drop SAR mobile terminal antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720161596.2U CN206595383U (en) | 2017-02-22 | 2017-02-22 | A kind of effective drop SAR mobile terminal antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206595383U true CN206595383U (en) | 2017-10-27 |
Family
ID=60125267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720161596.2U Expired - Fee Related CN206595383U (en) | 2017-02-22 | 2017-02-22 | A kind of effective drop SAR mobile terminal antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206595383U (en) |
-
2017
- 2017-02-22 CN CN201720161596.2U patent/CN206595383U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20180222 |