The embodiments of the present invention relate to the field of communications technologies, and disclose a signal amplification processing method and apparatus. The method includes: setting multiple groups of parameter values for a signal decomposition parameter group, separately performing signal amplification processing based on each group of parameter values, obtaining a power amplification efficiency corresponding to each group of parameter values, obtaining a group of parameter values corresponding to a maximum power amplification efficiency in the power amplification efficiency corresponding to each group of parameter values, and setting the group of parameter values corresponding to the maximum power amplification efficiency as parameter values of the signal decomposition parameter group. The power amplification efficiency may be improved by using the present invention.

A power amplifying apparatus of an embodiment includes a Doherty amplifier, a voltage adjuster, and a central processing unit. The Doherty amplifier is configured to amplify an input signal using a main amplifier and a peak amplifier and outputs an output signal in which the amplified signals are synthesized. The voltage adjuster is configured to supply drain voltages and gate voltages to the main amplifier and the peak amplifier. The central processing unit performs, based on a ratio between a saturated output power and an average output power of the Doherty amplifier, a control of the voltage adjuster to supply the drain voltages and the gate voltages.

A power adjustment method includes: measuring (S102) output power that is obtained when input power to be amplified in a linear region is input to a power amplifier configured to amplify input power linearly in the linear region in which output power is less than a predetermined value and amplify input power nonlinearly in a nonlinear region in which output power is equal to or more than the predetermined value; deriving (S107) a straight line connecting a measurement point corresponding to the measured output power and a boundary point between the linear region and the nonlinear region in a coordinate plane representing input/output characteristics; acquiring (S104-S106) information on an approximate equation that is stored in advance in correspondence with the measured output power, the approximate equation representing a relation between input power and output power in the nonlinear region; and storing (S108) information on the derived straight line and the acquired information on the approximate equation in a semiconductor integrated circuit provided at a preceding stage of the power amplifier.

Provided is a power consumption control circuit, an amplifier circuit and a power consumption control method which control the power consumption associated with an amplification action in real time.

A power consumption control circuit of the present invention comprises: a detection means which detects the presence or absence of an input of a digital input signal, spending a first period of time; a signal delay means which delays the digital input signal by a second period of time equivalent to the first period of time, and outputs the delayed signal; a digital-to-analog conversion means which converts the delayed signal into an analog signal, and outputs the analog signal; an amplification means which generates an amplification action when a bias is applied to it; and a bias control means which applies a bias to an amplification device, on the basis of a detection result obtained by the detection means.

A distortion compensating apparatus used in a wireless communication device such as a portable phone. An information measuring unit (11a) measures a distortion component and an electric power component based on a radiation signal. A compensation coefficient calculating unit (11b) calculates a compensation coefficient based on the distortion component and the electric power component. A signal transmitting unit (11c) outputs a signal corrected by the compensation coefficient as a transmission signal. A signal converting unit (13) converts the transmission signal into a high frequency signal. An amplitude separating unit (15) amplifies the high frequency signal and separates a portion thereof as a signal to be fed back. A feeding-back unit (14) processes the separated portion and outputs the result as a feedback signal to the information measuring unit (11a). An electric power information extracting unit (16) outputs a portion of the high frequency signal as the radiation signal, extracts electric power information from the radiation signal, and directly outputs the electric power information to the information measuring unit (11a).