Mobile terminal and method for reducing specific absorption rate

Abstract

The invention discloses a mobile terminal and a method for reducing specific absorption rate. The mobile terminal comprises an input unit, a control unit, a memorizer, a switch, an antenna group and a radio frequency circuit. The control unit is respectively connected with the input unit, the memorizer and the switch, the antenna group comprises a plurality of antennae, and the switch is respectively connected with each antenna and the radio frequency circuit. The input unit is used for monitoring a position relative to the mobile terminal and informing the obtained position to the control unit. The memorizer is used for memorizing the corresponding information of position to specific absorption rate of each antenna. The control unit is used for searching the specific absorption rate of each antenna in obtained position through detecting from the corresponding information of the position to specific absorption rate of each antenna memorized in the memorizer, according to the obtained position through detecting of the input unit, the antenna is chosen according to the specific absorption rate of the obtained position through the detecting of each antenna, and the switch is controlled to be communicated with the antenna and the radio frequency circuit. The mobile terminal and the method for reducing the specific absorption rate are capable of reducing radiation of the mobile terminal to a human body and the head of the human body.

Description

Technical field [0001] The present invention relates to the field of antenna technology, in particular to a mobile terminal and a method for reducing the specific absorption rate. Background technique [0002] Specific Absorption Rate (SAR) is a value indicating how much electromagnetic waves radiated by the mobile terminal are absorbed by the human body. That is, SAR is the electromagnetic power absorbed per unit mass of the human body. Because the SAR value is too high, it may cause harm to the human body, so many countries and regions have stipulated SAR limits. The European limit is 2.0W / kg; the American limit is 1.6W / kg. [0003] With the rapid development of wireless communication technology, mobile terminals (such as mobile phones, tablet computers, etc.) have been increasingly widely used. At the same time, the impact of electromagnetic radiation brought by mobile terminals on human health has become an issue of increasing public concern. [0004] The existing SAR reductio...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing SAR reduction technologies use methods such as reducing the power of the transmitter, using wave-absorbing materials, conductor reflectors and shields, and coating the surface of the casing with anti-radiation and wave-absorbing coatings. These methods basically affect the communication signal. The contradiction between human radiation safety and high-quality communication is not fundamentally resolved

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