AN APPARATUS FOR ADJUSTING DYNAMICALLY POWER AMPLIFIER OF A MOBILE TERMINAL

摘要

An apparatus for adjusting dynamically power amplifier of a mobile terminal is provided by the present invention, the apparatus includes: a control unit for receiving dynamical varied control signal from base band chip, and for controlling an adjustable voltage unit according to the control signal; the adjustable voltage unit for adjusting dynamically power supply voltage and offset voltage of a RF power amplifier unit under the control of the control unit in the case of the mobile terminal in a state of transmitting; and the RF power amplifier unit for performing operation under the power supply voltage and the offset voltage and for amplifying the power of modulated OFDM signal. With the present invention, the problems and disadvantages of lower efficiency and more power consumption in the case of middle or small power output resulted by linearity power amplifier offset and supply voltage being constant in the art are overcome and the problem of linearity degree dissatisfying need due to lower power supply voltage in the case of big power output is overcome.