Method for reducing electromagnetic wave energy specific absorption rate and mobile terminal

An energy absorption ratio, mobile terminal technology, applied in the direction of reducing energy consumption, electrical components, energy-saving ICT, etc., can solve problems such as human radiation energy hazards, and achieve the effect of reducing electromagnetic radiation, reducing SAR, and reducing electromagnetic radiation hazards.

Inactive Publication Date: 2015-03-18
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of using mobile terminals for long-term communication, since the mobile terminals are close to the hum...

Method used

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  • Method for reducing electromagnetic wave energy specific absorption rate and mobile terminal
  • Method for reducing electromagnetic wave energy specific absorption rate and mobile terminal
  • Method for reducing electromagnetic wave energy specific absorption rate and mobile terminal

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0038] A large number of existing over the air performance test (OTA, Over The Air) test data shows: when the mobile terminal is close to the human hand, the total radiated power (TRP, Total Radiated Power) is significantly reduced by about 3 to 5 dBm; At this time, TRP is significantly reduced by 5-8dBm. In other words, when the mobile terminal is close to the human body, the external radiation power of the mobile terminal will be significantly reduced due to the change in the external impedance of the antenna.

[0039] Therefore, it can be judged whether the mobile terminal is close to the human body by judging the change of the external radiation power.

[0040] At present, the calculation formula of SAR is: SAR=P / (Xa+Xb) 2 ; Among them, P is the transmit power of the mobile terminal, Xa is the distance from the mobile terminal to the edge of the bod...

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Abstract

Disclosed is a method of lowering electromagnetic wave energy specific absorption ratio (SAR) of a mobile terminal. The method comprises: arranging at least two antennas in a mobile terminal, the first antenna being a main antenna, the second antenna being an auxiliary antenna, and placing the first antenna and the second antenna diagonally in the mobile terminal; detecting outgoing radiation power of the first antenna in a communication process of the mobile terminal in real time; and controlling, according to the outgoing radiation power, the mobile terminal to use the first antenna or the second antenna to perform communication. Meanwhile, further disclosed are a mobile terminal and a computer storage medium.

Description

Technical field [0001] The present invention relates to mobile terminal technology, and in particular to a method for reducing electromagnetic wave energy absorption rate (SAR, Specific Absorption Rate) and a mobile terminal. Background technique [0002] With the popularity of mobile terminals and the increase in the average time per person using mobile terminals, the influence of electromagnetic waves radiated by mobile terminals on the human body has attracted more and more attention. [0003] At present, SAR is usually used to represent the electromagnetic radiation energy absorbed by the unit mass of human tissue and unit time. The unit of SAR is watts / kg. Many countries have established and regulated safety standards for human exposure to electromagnetic waves based on SAR. However, in the process of using a mobile terminal to communicate for a long time, since the mobile terminal is close to the human body, the harm caused by the radiation energy of the human body at this ti...

Claims

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Application Information

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IPC IPC(8): H04B7/04
CPCH04B1/3838Y02B60/50Y02D30/70
Inventor 杨少华杨永兴
Owner ZTE CORP
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