电子元件与材料2024，Vol.43Issue(6)：729-734,742,7.DOI:10.14106/j.cnki.1001-2028.2024.1316
基于谐波控制的Doherty功率放大器设计
Design of Doherty power amplifier based on harmonic control
摘要
Abstract
Power amplifier is an important RF front-end circuit in wireless communication.To meet the requirements of modern wireless communication for power amplification,a new harmonic control circuit was designed based on the analysis of harmonic control theory to improve the efficiency of power amplifier.The new harmonic control circuit can compensate the parasitic parameters generated by power tube,and it can also control the second harmonic and third harmonic to improve the efficiency of Doherty power amplifier.To address narrow bandwidth of traditional Doherty power amplifier,a post-matching structure was then proposed to design and improve the bandwidth of the Doherty power amplifier.Finally,a Doherty power amplifier was made and tested by using CGH40010F GaN HEMT from Cree company.From 1.85 GHz to 2.15 GHz,the output power of the Doherty power amplifier can reach 44.3-44.8 dBm,the gain is 12-15 dB,the output drain efficiency(DE)is more than 75%,and the 6 dB back-off efficiency is more than 60%.The results show that the designed Doherty power amplifier has obvious improvement in efficiency.关键词
高效率/谐波控制/封装寄生/Doherty功率放大器/后匹配结构/6 dB回退Key words
high efficiency/harmonic control/encapsulation parasitism/Doherty power amplifier/post-matching structure/6 dB fallback分类
信息技术与安全科学引用本文复制引用
王帅,安万通,李晓明,刘仁创,李鑫..基于谐波控制的Doherty功率放大器设计[J].电子元件与材料,2024,43(6):729-734,742,7.基金项目
河南理工大学博士基金(B2016-18) （B2016-18）
