公开(公告)号：US20030184371A1

公开(公告)日：2003-10-02

申请号：US10106462

申请日：2002-03-26

Applicant: MOTOROLA, INC.

Inventor： Dale Anderson ,  Michael Shaw

IPC: H03F001/26

CPC classification number: H03F1/3252 ,  H03F1/3276 ,  H03F3/602

Abstract: A power amplifier circuit (30, 60) improves the linearity of an amplified output signal. The power amplifier circuit (30, 60) includes an input (33, 63) for receiving a carrier signal (34, 64) and an array of combined amplifiers (32, 62) of a predetermined type for amplifying the carrier signal (34, 64). At least one amplifier (48, 78) of the predetermined type is located between the input (33, 63) and the array of combined amplifiers (32, 62) for amplifying the carrier signal (34, 64) to produce a predistorted carrier signal (34b1, 64b1) with a carrier signal component and a distortion component to condition the carrier signal (34, 64) for input into the array of combined amplifiers (32, 62), and specifically to compensate for nonlinearities produced by the array of combined amplifiers (32, 62).

Abstract translation: 功率放大器电路（30,60）改善放大的输出信号的线性度。 功率放大器电路（30,60）包括用于接收载波信号（34,64）的输入端（33,63）和预定类型的组合放大器阵列（32,62），用于放大载波信号（34,64） 64）。 预定类型的至少一个放大器（48,78）位于输入（33,63）和组合放大器（32,62）阵列之间，用于放大载波信号（34,64）以产生预失真的载波信号 （34b1,64b1），其具有载波信号分量和失真分量，以调节载波信号（34,64）以输入到组合放大器（32,62）的阵列中，并且具体地补偿由组合阵列产生的非线性 放大器（32,62）。