摘要
为了实现高效率的射频滤波功率放大器(filtering power amplifier),将基于悬置线的截线加载谐振器(stub-loaded resonator)带通滤波器的输入阻抗直接匹配到射频功放管CGH40010F的最佳基波阻抗和谐波阻抗,实现射频功率放大器与滤波器的联合设计,使滤波器同时实现了滤波、阻抗匹配和谐波控制的功能,避免了额外的输出匹配结构,实现了结构紧凑、具有滤波功能的高效率谐波控制型射频功放.实测结果表明在中心频率2.45GHz处,其输出功率约为40dBm,最大电源附加效率(power added efficiency)为76.9%,同时具有良好的滤波特性.
To implement a highly efficient radio frequency(RF)filtering power amplifier(FPA),a harmonic controlled power amplifier(PA)and a band pass filter are jointly designed.The filter uses a multi-mode stub-loaded resonator(SLR)based on suspended strip-lines.The input impedance of the filter matches to the optimal fundamental and harmonic impedances of the RF power transistor of the PA,CGH40010F.No extra matching network is needed.The filter implements the functions of filtering,output matching,and harmonic controlling simultaneously,resulting in a compact and efficient harmonic controlled FPA.Measurements show that the FPA is with a good filtering characteristic and is with a maximum output power of 40 dBm and a power added efficiency(PAE)of 76.9%at 2.45GHz.
作者
方升
彭习文
谢泽明
FANG Sheng;PENG Xi-wen;XIE Ze-ming(School of Electronics and Information,South China University of Technology,Guangzhou,Guangdong 510641,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2020年第9期1864-1867,共4页
Acta Electronica Sinica
基金
国家自然科学基金项目(No.61571194)
广州市科技计划项目(No.201707010060)。
关键词
射频功率放大器
F类功放
滤波功放
多模滤波器
悬置带线
电源附加效率
负载阻抗
谐波控制
RF power amplifiers
class F power amplifiers
filtering power amplifiers
multimode filters
suspended strip-lines
power added efficiency
load impedance
harmonic controlling
