基于谐波抑制的小型化高效率功率放大器设计  

Design of miniaturized high efficiency power amplifier based on harmonic suppression

作　　者：刘天韵 刘少斌[1] Liu Tianyun;Liu Shaobin(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京211100

出　　处：《电子技术应用》2023年第2期97-101,共5页Application of Electronic Technique

摘　　要：针对传统VHF波段功率放大器存在的体积大、效率低、谐波干扰严重等问题,利用集总参数元件设计了一款工作于该波段的小型化、高功率、高效率功率放大器。通过在功率放大器的输出匹配电路中引入多级LC谐振网络,实现了对谐波分量的有效抑制,提高了功率放大器的线性度和效率,也改善了电磁兼容性。实物测试结果表明,该功率放大器的饱和输出功率约为44.9 dBm,饱和功率增益为14 dB,功率附加效率为62%,性能优良,具有较好的实际工程应用价值,可广泛应用于航空、航天等领域。To overcome conventional VHF power amplifiers'shortcomings of bulky size,low efficiency,and EM interferences due to output harmonics,a miniaturized,high power and high efficiency power amplifier working in VHF band is designed by us‐ing lumped parameter elements in this paper.In this work,multiple series LC resonators are introduced into the output matching circuit of the power amplifier,with effectively suppressed harmonic components,improved linearity and efficiency,as well as im‐proved electromagnetic compatibility of the power amplifier.Finally,the physical test results show that the saturated output power of the power amplifier is about 44.9 dBm,the saturated power gain is 14 dB,and the power added efficiency is 62%.With its excellent performance,it has good practical engineering application value and can be widely used in aviation,aerospace and other fields.

关 键 词：功率放大器 谐波抑制 高效率 小型化 VHF波段 

分 类 号：TN92[电子电信—通信与信息系统]