| CPC H01Q 1/36 (2013.01) [G01B 7/14 (2013.01); G01R 29/0814 (2013.01); H01Q 1/48 (2013.01); H01Q 1/50 (2013.01)] | 20 Claims |

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1. An electronic device, comprising:
a first antenna radiator, wherein a path capable of transporting a direct current is provided between the first antenna radiator and at least one of a grounding terminal and a feeding terminal;
a sensing body, wherein the sensing body is configured to generate a first capacitance signal by sensing a distance between a user and the sensing body, and a distance between the first antenna radiator and the sensing body is less than a first preset distance threshold;
a SAR antenna radiator, wherein there is no direct current path between the SAR antenna radiator and the feeding terminal, and there is no direct current path between the SAR antenna radiator and the grounding terminal;
a SAR sensor, wherein the SAR sensor is connected with the sensing body and the SAR antenna radiator, and the SAR sensor is configured to receive the first capacitance signal generated through the sensing of the sensing body and a second capacitance signal sensed by the SAR antenna radiator; and
a controller, wherein the controller is connected with the SAR sensor, and the controller is at least configured to control, according to the first capacitance signal, a transmit power of the first antenna radiator;
when a distance between one of the SAR antenna radiator and the SAR sensor is less than or equal to a second preset distance threshold, the SAR antenna radiator is connected with the SAR sensor through a detection channel; and when the distance between the SAR antenna radiator and the SAR sensor is greater than the second preset distance threshold, the SAR antenna radiator is in differential connection with the SAR sensor through the detection channel and an auxiliary channel.
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