Broadband high-efficiency power amplifier with harmonic suppression based on load-pull technique
Broadband high-efficiency power amplifier with harmonic suppression based on load-pull technique
复制标题
基于负载牵引技术的谐波抑制宽带高效功率放大器
DOI：
10.1002/mop.28883
复制
发表时间：
2015
影响因子：
1.5
通讯作者：
Wang Haoyu
中科院分区：
文献类型：
--
作者：
Wang Zhenyang;Liu Falin;Wang Haoyu
本文提出了一种新的宽带高效功率放大器的设计方法，并设计和制作了一个具有紧凑匹配拓扑结构的宽带功率放大器，验证了该方法的有效性。在该方法中，特别注意了谐波抑制，以提高效率和基波和谐波阻抗的适当的设计空间，基于负载牵引技术，实际上考虑了寄生效应的影响，被发现，以减轻宽带匹配网络设计的困难。然后提出了一种紧凑的匹配网络拓扑结构，使基波和二次谐波阻抗在较宽的带宽上同时到达史密斯圆图上的设计空间。在1.5 ~ 2.5 GHz（50%相对带宽）范围内，功率附加效率大于63%，饱和输出功率为40.5 ~ 42 dBm。© 2015 Wiley Periodicals，Inc.微波光学技术快报57：481-485，2015
In this letter, a novel design method for broadband and efficient power amplifier (PA) is proposed and a broadband PA with a compact matching topology is designed and fabricated to verify the validity of the method. In the method, specific attention has been paid to harmonic suppression to enhance efficiency and an appropriate design space of the fundamental and harmonic impedances, based on load‐pull technique which actually takes into account of the influences of the parasitics, is found to alleviate the difficulty of designing broadband matching network. Then a compact matching network topology is proposed to lead the fundamental and second harmonic impedances to the design space on the Smith chart over a wide bandwidth, simultaneously. The fabricated PA exhibits greater than 63% power added efficiency from 1.5 to 2.5 GHz (50% relative bandwidth), and 40.5–42 dBm saturated output powers. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:481–485, 2015