Method and radio frequency circuit for adjusting power supply voltage of radio frequency power amplifier

Abstract

The invention relates to the field of mobile communication and particularly relates to a method for adjusting a power supply voltage of a radio frequency power amplifier and a radio frequency circuit and is used for solving the problem that in the prior art, the power supply voltage of the radio frequency power amplifier cannot be flexibly adjusted. According to the embodiment of the invention, power output to an antenna by a radio frequency front end is coupled based on a coupling coefficient and then is fed back to a radio frequency transceiver. Transmitting power on a target channel and power on an adjacent channel of the target channel are calculated according to the feedback coupled power. The power supply voltage of the radio frequency power amplifier is adjusted according to a difference value between the transmitting power and the power on the adjacent channel of the target channel. According to the embodiment of the invention, the power supply voltage of the radio frequency power amplifier can be adjusted flexibly in real time according to the difference value between the transmitting power and the power on the adjacent channel of the target channel, so the power consumption when the radio frequency power amplifier works can be effectively reduced, and the standby and endurance duration of a mobile terminal can be prolonged.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for adjusting the power supply voltage of a radio frequency power amplifier and a radio frequency circuit. Background technique [0002] With the development of mobile communication technology, the mobile terminal has evolved from the original single call function to voice, data, image, music and multimedia. The current mobile terminals can basically be divided into two types: one is a traditional terminal; the other is an intelligent terminal. Smart terminals have the basic functions of traditional terminals, and have the following characteristics: open operating system, hardware and software scalability, and support for third-party secondary development. Compared with traditional terminals, smart terminals are more and more popular due to their powerful functions and convenient operation. [0003] In all kinds of mobile terminals, the radio frequency circuit is an...

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Problems solved by technology

[0009] The present invention provides a method for adjusting the power supply voltage of a radio frequency power amplifier and a radio frequency circuit, which are used to solve the problem that the current method for adjusting the power supply voltage of a radio frequency power amplifier in a radio frequency circuit cannot flexibly adjust the power supply voltage of a radio frequency power amplifier. The problem of making adjustments

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