| 负载牵引法在开关类功率放大器设计中的应用 |
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| 引用本文： | 孙殿举,吴学杰,侯磊,刘儒.负载牵引法在开关类功率放大器设计中的应用[J].现代电子技术,2010,33(5):191-192,196. |
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| 作者姓名： | 孙殿举 吴学杰 侯磊 刘儒 |
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| 作者单位： | 西南交通大学,牵引动力国家重点实验室,四川,成都,610031 |
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| 摘 要： | 为提高开关类功率放大器设计的准确性，找出功放管的最优输出阻抗值，采用负载牵引法设计开关类功率放大器，得到最佳输出阻抗值，然后设计输出及输入匹配网络及谐波抑制网络，仿真结果输入功率为28dBm时，功率附加效率达到69．352％，表明功率负载牵引方法为改进开关类放大器设计，优化开关类功放管性能提供了快速而有效的方法，提高了大信号下模型的准确性。
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| 关 键 词： | 负载牵引 开关类 功率放大器 最优阻抗 功率附加效率 |
Application of Load-pull in Switch-mode Power Amplifier Design |
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| SUN Dianju,WU Xuejie,HOU Lei,LIU Ru.Application of Load-pull in Switch-mode Power Amplifier Design[J].Modern Electronic Technique,2010,33(5):191-192,196. |
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| Authors: | SUN Dianju WU Xuejie HOU Lei LIU Ru |
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| Affiliation: | SUN Dianju,WU Xuejie,HOU Lei,LIU Ru(Traction Power State Key Laboratory,Southwest Jiaotong University,Chengdu,610031,China) |
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| Abstract: | To improve the accuracy of switch-mode power amplifier design and find the power amplifier optimum impe-dance,load-pull approach is adopted to design switch-mode power amplifier,the optimal output impendence is obtained,output and input matching network and harmonic traps are designed,the simulation results show that the power-added efficiency of 69.352% with the input power of 28dBm is achieved,load-pull provides quick and efficiency approach,raises large-signal model accuracy for improving switch-mode pow... |
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| Keywords: | load-pull switch-mode power amplifier optimum impedance power added efficiency |
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