| 摘要 |
An apparatus for dynamically adjusting a power amplifier of a mobile terminal is provided by the present invention, the apparatus includes: a controlling unit, adapted to receive a dynamically varying control signal from a base band chip and control a voltage adjusting unit according to the control signal; the voltage adjusting unit, adapted to dynamically adjust a power supply voltage and a bias voltage of a radio frequency, RF, power amplifying unit under the control of the controlling unit in the case of the mobile terminal being in a transmitting state; and the RF power amplifying unit, adapted to work under the power supply voltage and the bias voltage and to amplify the power of modulated OFDM signal With the present invention, the following problems and disadvantages of the linear power amplifier are overcome: due to the fixed bias and power supply voltage, the efficiency is low and the power consumption is high in the case of a medium or small power output and the linearity does not satisfy the requirement due to a low power supply voltage in the case of large power output. |
