Radio frequency power control method of mobile terminal

Abstract

The invention discloses a radio frequency power control method for a mobile terminal, which is characterized in that the method includes the following steps: a), obtain environment temperature; b), obtain the gain control volume corresponding to the environment temperature; c), the gain control value controls the gain of a radio frequency amplifier. The radio frequency power control method of the invention controls the radio frequency power through the detection of the environment temperature, thus saves the HDET circuit or the linear gain logarithmic amplifier power detector circuit, and reduce the cost.

Description

technical field [0001] The invention relates to the field of mobile terminals, in particular to a method for controlling radio frequency power of a mobile terminal. Background technique [0002] In the prior art, there are mainly the following two ways to control the radio frequency power of the mobile terminal: [0003] The first one uses a separate HDET (High power detector) circuit to detect the radio frequency output power of the mobile terminal, and controls the radio frequency power according to the detection result; [0004] The second method adopts a linear gain logarithmic amplifier power detector plus a coupler; it couples the radio frequency power output to the linear gain logarithmic amplifier power detector through a logarithmic coupler, and detects it and then controls it RF output power provides information. [0005] For the first solution, because it is a separate HDET circuit, it will occupy a large PCB board space, which is not conducive to the volume con...

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Problems solved by technology

[0005] For the first solution, since it is a separate HDET circuit, it will occupy a large PCB board space, which is not conducive to the volume control of the mobile terminal.

At the same time, the existence of the HDET circuit itself also consumes device resources and increases costs;

[0006] For the second solution, due to the high defect rate of the placement of the linear gain logarithmic amplifier power detector and serious material throwing, the cost is relatively high

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