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Multiple Input Multiple Output Antenna System and Radiation Absorption Method

An antenna system, multi-output technology, applied in the direction of antenna, antenna array, resonant antenna, etc., can solve the problem of reducing SAR value

Inactive Publication Date: 2018-10-26
ZTE CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The invention provides a MIMO antenna system, which solves the problem of reducing the SAR value

Method used

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  • Multiple Input Multiple Output Antenna System and Radiation Absorption Method
  • Multiple Input Multiple Output Antenna System and Radiation Absorption Method
  • Multiple Input Multiple Output Antenna System and Radiation Absorption Method

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Embodiment Construction

[0031] At present, the methods commonly used to reduce the SAR value of the antenna system mainly include: (1) Coating shielding material on the inner shell or outer shell of the terminal, so that when the terminal emits electromagnetic signals, the harmful electromagnetic waves towards the human body can be shielded, so that To reduce the SAR value, but this method causes the shielding layer to shield harmful electromagnetic waves while reducing the transmission efficiency of the signal, and the shielding layer will gradually become thinner and lose its shielding effect over time; (2) between the antenna and the human body Conductor materials are added between the models, and the conductor materials are used to reflect the electromagnetic waves emitted to the human body, so that the antenna pattern changes from a circle to a heart-shaped pattern, thereby reducing the SAR value of the terminal antenna, but the reflector depends on the shape of the host antenna The cost is high ...

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Abstract

A multiple input multiple output antenna system and a radiation absorption method. The present invention relates to the technical field of mobile communications, and solves a problem of a low specific absorption rate (SAR) value. The system comprises: a multiple input multiple output (MIMO) antenna and a printed circuit board (PCB) board coupled to each other. The system further comprises a metal radiation patch coupled to the MIMO antenna through the PCB board. The metal radiation patch is a two-dimensional electromagnetic band-gap structure. The PCB board is located between the MIMO antenna and the metal radiation patch. The MIMO antenna coincides with the PCB board and the metal radiation patch from the top. The two-dimensional electromagnetic band-gap structure absorbs an electromagnetic wave, outside a band gap of the two-dimensional electromagnetic band-gap structure, of a frequency transmitted by the MIMO antenna. The technical solution provided in the embodiment of the present invention is applicable to electronic and electric equipment, thereby implementing an easily implementable means of lowering a SAR value.

Description

technical field [0001] The present invention relates to the technical field of mobile terminal communication, in particular to a MIMO antenna system used to reduce the SAR value of a multiple-input multiple-output (MIMO) antenna of a mobile terminal, and to reduce radiation damage to the human body under the premise of ensuring its normal communication efficiency and Radiation absorption method. Background technique [0002] At present, many people already know that electromagnetic radiation can directly cause harm to the organs, cells or nervous system of the human body. This is the biological electromagnetic effect of the electromagnetic field. The concept of specific absorption rate - SAR (Specific Absorption Rate), specific absorption rate refers to the electromagnetic radiation energy (watts) absorbed by a unit mass of organisms (including the human body) per unit time, and the unit is W / Kg. These electromagnetic radiations are not limited to large electrical equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q17/00H01Q21/00H01Q1/50H01Q23/00H01Q1/22
CPCH01Q9/045H01Q15/006H01Q21/065
Inventor 禹忠
Owner ZTE CORP
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