公开(公告)号：KR1020090071834A

公开(公告)日：2009-07-02

申请号：KR1020070139752

申请日：2007-12-28

Applicant: 성균관대학교산학협력단

Inventor： 양영구 ,  야오,시 ,  박현철 ,  권성욱

IPC: H03F1/07

CPC classification number: H03F1/0288 ,  H03F1/56 ,  H03F3/604 ,  H03F2200/15 ,  H03F2200/387 ,  H03F2200/451 ,  H03H7/38

Abstract: A Doherty amplifier is provided to improve efficiency while maintaining linearity by tuning output harmonic impedance of a carrier amplifier and a peak amplifier. A carrier amplifier performs the amplification operation of a signal regardless of the input signal level. A peak amplifier performs an amplification operation from a high power output when the input signal level is above the predetermined level. An output synthesizing circuit synthesizes and outputs the output of the carrier amplifier and the peak amplifier. An input branch circuit distributes the input signal to the carrier amplifier and the peak amplifier. A carrier amplifier output harmonic impedance tuning net(HTC) is installed in a rear part of the carrier amplifier and tunes the output harmonic impedance of the carrier amplifier. A peak amplifier output harmonic impedance tuning net is installed in the rear part of the peak amplifier and tunes the output harmonic impedance.

Abstract translation: 提供Doherty放大器以通过调整载波放大器和峰值放大器的输出谐波阻抗来提高效率，同时保持线性度。 无论输入信号电平如何，载波放大器执行信号的放大操作。 当输入信号电平高于预定电平时，峰值放大器从高功率输出执行放大操作。 输出合成电路合成并输出载波放大器和峰值放大器的输出。 输入分支电路将输入信号分配给载波放大器和峰值放大器。 载波放大器输出谐波阻抗调谐网（HTC）安装在载波放大器的后部，并调谐载波放大器的输出谐波阻抗。 峰值放大器输出谐波阻抗调谐网安装在峰值放大器的后部，并调谐输出谐波阻抗。