Radio frequency circuit, electronic device and control method

Abstract

The application discloses a radio frequency circuit, electronic equipment and a control method, which belong to the technical field of communication. The radio frequency circuit includes: a radio frequency module, a matching module, a plurality of detection modules and a plurality of antennas; the radio frequency module is connected to the first end of the matching module, and the matching module distributes the total transmission power of the radio frequency module to each antenna, or distributes the power of each antenna The received power is sent to the radio frequency module; the second end of the matching module is connected to the first end of multiple detection modules; the second end of multiple detection modules is connected to multiple antennas one by one, and the detection module is used for detection and detection The distance between the antenna connected to the module and the human body; wherein, the matching module determines the transmission power and reception power of the multiple antennas according to the distance detected by the detection module. In this embodiment of the present application, the power transmitted on the antenna can be controlled according to the distance between the antenna and the user, so that the transmission power can meet the SAR regulations without reducing the total radio frequency power.

Description

technical field [0001] The present application belongs to the field of communication technologies, and in particular relates to a radio frequency circuit, an electronic device and a control method. Background technique [0002] With the improvement of terminal performance, the functions of the terminal are more and more diversified, which provides a lot of convenience for users. However, the terminal has electromagnetic radiation to the human body, which may cause harm to the human body. Electromagnetic wave absorption ratio (Specific Absorption Rate, SAR) is the electromagnetic wave energy absorption ratio of mobile phones or wireless products, which is used to measure the radio radiation energy actually absorbed by the human body. Due to the limitation of SAR, the antenna, especially in the frequency band of medium and high frequency, needs to reduce the transmit power to meet the SAR regulations. [0003] However, reducing the transmit power will deteriorate the communi...

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Problems solved by technology

[0004] The embodiment of the present application provides a radio frequency circuit, electronic equipment and a control method, which can solve the problem in the prior art that due to the need to meet the SAR regulations, the transmission power of the antenna is reduced, and the communication performance of the terminal is deteriorated.

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