Electronic equipment and method for reducing SAR (Synthetic Aperture Radar) thereof

Abstract

The invention relates to the technical field of electronics, and discloses electronic equipment and a method for reducing SAR (Synthetic Aperture Radar) thereof. The electronic equipment comprises a target active device and a first antenna distributed in a preset distance range of the periphery of the target active device, the outer surface of the target active device is provided with a grounded shielding metal assembly, and the covering surface of the shielding metal assembly and the mounting surface of the first antenna are located on the same side. The method comprises the following steps: detecting the distance between a human body and a first SAR sensor by using the first SAR sensor; and when the detection distance is smaller than a preset threshold value, SAR reduction processing is performed on the first antenna. According to the invention, the shielding metal assembly is used for shielding the influence of the target active device on the antenna performance, and the shielding metal assembly is used as a detection antenna of the first SAR sensor to judge whether the SAR reduction processing operation on the first antenna needs to be triggered or not. The effect of shielding the adverse effect of the target active device on the antenna in the close range is achieved, and the assembly space is saved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an electronic device and a method for reducing SAR (Specific Absorption Rate, Specific Absorption Rate). Background technique [0002] At present, the size of smart POS machines is much larger than that of smart terminal devices such as mobile phones. Due to customer demand, the size of some POS machines will be greatly reduced to the same size as smart terminal devices such as mobile phones. figure 1 The size comparison diagram of the regular size POS machine and the small size POS machine shown, the size difference between the two POS machines is very large. [0003] Since there are many kinds of metal active devices in the scanning dock and the surface current intensity is very large, it will absorb part of the electromagnetic waves emitted by the antenna in the short range, thus causing obvious adverse effects on the performance of the antenna closer to the scanning dock....

AI Technical Summary

Problems solved by technology

This makes the space on the POS machine very limited, so it is necessary to make full use of the area near the scanning dock, that is, part of the transmitting antenna must be designed in the area close to the scanning dock, such as image 3 As shown, there are four antennas, Ant2, Ant3, Ant4 and Ant5, on the upper area of ​​the POS machine, which will cause the performance of this part of the antenna to be adversely affected by the dock scanning, so an effective solution is urgently needed

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