An electromagnetic wave control method and device

A control method and electromagnetic wave technology, applied in circuits, electrical components, antennas, etc., can solve the problems of reducing transmission power and radio frequency performance, and achieve the effect of reducing transmission power, reducing SAR, and ensuring signal quality

Active Publication Date: 2021-07-16
LENOVO (BEIJING) LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a method and device for electromagnetic wave control, which is used to solve the problem of the degradation of radio frequency performance due to the method of reducing the transmission power when controlling SAR in the prior art

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  • An electromagnetic wave control method and device
  • An electromagnetic wave control method and device
  • An electromagnetic wave control method and device

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Embodiment Construction

[0056] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0057] It should be understood that various modifications may be made to the embodiments applied for herein. Accordingly, the above description should not be viewed as limiting, but only as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the general description of the application given above and the detailed description of the embodiments given below, serve to explain the embodiments of the application. principle.

[0059] These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment given as non-limiting examp...

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Abstract

The invention discloses an electromagnetic wave control method and device, wherein the method includes: when an object is detected close to the antenna array, determining the phase adjustment mode of the radiation beam of each antenna unit in the antenna array, so that The phase of the radiation beam of each antenna unit is the target phase; wherein, the phase adjustment method includes phase adjustment and no phase adjustment; the radiation beams of the antenna units whose phase is the target phase are superimposed and synthesized to obtain A target electromagnetic wave in a predetermined direction. The present invention controls the direction of the radiation beam of each antenna unit in the antenna array, and then controls the direction of the superimposed and synthesized electromagnetic wave, so that the direction of the synthesized electromagnetic wave is far away from the human body, so as to realize the reduction of SAR without reducing the emission Power, to ensure the radio frequency performance, thereby ensuring the signal quality.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an electromagnetic wave control method and device. Background technique [0002] Electronic devices such as mobile phones have transmitting antennas, which generate electromagnetic radiation when transmitting signals. SAR (Specific Absorption Rate, electromagnetic wave absorption ratio) is the electromagnetic wave energy absorption ratio of mobile phones or other electronic devices. It is defined as: under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. For safety reasons, the SAR value of electronic devices such as mobile phones cannot exceed the specified range of safety SAR. Therefore, when a human body or object is close to an electronic device such as a mobile phone, it is necessary to adjust the electromagnetic wave absorption ratio of the electronic device such as a mobile phone so that the elec...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q3/36H01Q21/00
CPCH01Q3/36H01Q21/00
Inventor 霍彬冯伊平
Owner LENOVO (BEIJING) LTD
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