公开(公告)号：DE602004022119D1

公开(公告)日：2009-09-03

申请号：DE602004022119

申请日：2004-03-26

Applicant: POSTECH FOUNDATION

Inventor： KIM BUMMAN ,  YI JAE HYOK ,  WOO YOUNG YUN

IPC: H04B1/04 ,  H03F1/32

Abstract: Provided is a digital feedback linearizing apparatus 100 and method to linearize a power amplifier (PA), which is intended to improve the linearity of a mobile communication base station PA 10, and more particularly, a digital feedback linearizing apparatus 100 and method to linearize a PA 10 using a digital signal process (DSP) 110 and a feedback technology, in which a predistorted signal u(t) required for linearization is generated by adding an input signal x(t) input through a predetermined path to an inverse distortion component e(t) corresponding to a distortion component of the PA 10 and in which a linearly amplified output signal y(t) is obtained by passing the predistorted signal u(t) through the PA.