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Method and device for realizing SAR control

A reverse-direction, metal technology, applied in the field of communication, can solve the problems of violating the miniaturization design of wireless terminals, radiation enhancement, large location space, etc., to achieve the effect of large flexibility and adaptability, reduce harm, and reduce SAR peak value

Inactive Publication Date: 2011-08-17
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of single-sided reflector measures, although it reduces the radiation of the antenna to a certain human body, it will also lead to the enhancement of the radiation on the other side.
Moreover, the reflector and the shielding device require a larger space during the assembly process, which also violates the original intention of the miniaturization design of the wireless terminal

Method used

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  • Method and device for realizing SAR control
  • Method and device for realizing SAR control
  • Method and device for realizing SAR control

Examples

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Embodiment Construction

[0032] Generally speaking, based on the metal coupling structure, the SAR value can be reduced and the structural space can be saved without affecting the overall radiation quality of the wireless terminal antenna. For example, add multiple metal coupling structures on four or more surfaces of the data card antenna to change the radiation characteristics and current distribution in the near area of ​​the antenna, so as to achieve the purpose of reducing the SAR value as a whole.

[0033] In particular, a multi-antenna wireless terminal with reduced SAR peak can be provided. These include: multi-layer PCB with RF baseband circuitry, main antenna for transmit and receive, diversity / MIMO antenna for receive, structural housing, USB connector, said metal on the inner and / or outer walls of the case Coupling structure, and ensure that it is in the area of ​​multiple directions of the antenna.

[0034] The metal coupling structure can have a variety of shapes, such as at least one o...

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PUM

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Abstract

The invention discloses a method and a device for realizing specific absorption rate (SAR) control, which are applied in a wireless terminal. In both the method and the device, metal coupling structures are arranged in different directions on the periphery of an antenna of a wireless terminal; and the metal coupling structures generate an overall director or reflector effect on near-field radiation to integrally direct the near-field radiation of the antenna to an opposite direction of a user. The method and the device do not influence the receiving and transmitting performance of a terminal, simultaneously can integrally reduce a local SAR peak, and reduce human radiation damage. In addition, the method and the device do not need to make major changes on designed and molded antennae, circuits and structures, save cost, also save space, have very high flexibility and adaptability when in application and fulfill the aim of the miniaturization design of the wireless terminal.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for realizing specific absorption rate (SAR) control. Background technique [0002] With the rapid development of wireless communication technology, personal wireless terminals (mobile phones, data cards, MiFi / Hotspot, etc.) are widely popularized and applied. In daily application scenarios, the distance between such products and the human body is getting smaller and smaller, and the impact of electromagnetic radiation brought by wireless terminals on human health has become a topic of public concern. Usually, the SAR indicator is used internationally to measure the energy absorbed by the human body in an electromagnetic exposure environment. Many countries have also formulated corresponding regulations to ensure the safety of electromagnetic radiation on the human body by limiting the upper limit of the SAR value of wireless terminal equipment. Therefore, in the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24H04B1/38
CPCH01Q9/04H01Q1/52H01Q21/28H01Q1/2275H04B1/3838H01Q19/005
Inventor 张璐
Owner ZTE CORP
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