一种新型提高射频功率放大器PAE的电路技术  

A Novel Design Technique for Increasing PAE of RF Power Amplifier

作　　者：郭瑜[1] 胡善文[2] 张晓东[3,4] 高怀[2] 

机构地区：[1]东南大学苏州研究院高频高功率器件与集成技术研究中心,江苏苏州215123 [2]东南大学国家ASIC系统工程技术研究中心,南京210096 [3]苏州工业园区教育投资发展有限公司 [4]苏州英诺迅科技有限公司射频功率器件及电路技术中心,江苏苏州215123

出　　处：《固体电子学研究与进展》2011年第3期257-262,共6页Research & Progress of SSE

摘　　要：提出了一种新型提高射频功率放大器功率附加效率(PAE)的电路技术,该方法通过滤除二次谐波分量、反射叠加三次谐波分量以提高电路PAE,分析了相位匹配的机制及其影响因素。基于该技术设计了一款功率放大器,仿真结果表明:工作频率为918 MHz时,该功放的P_(1db)达到了30.05 dBm,功率附加效率达到了58.75%,较普通功放提高了12%,功率增益在20 dB左右。A novel design technique for increasing Power Added Efficiency （PAE） of RF power amplifier is demonstrated. PAE is increased by reducing the 2^nd harmonic element and reflecting the 3rd harmonic element, and phase matching is accounted for this design. A power amplifier for experimental verification is designed and fabricated based on this topology, simulation and measurement results show that： its power gain reaches up to 20 dB, output power is 30.05 dBm at 1 dB gain compression point, and the maximum PAE comes up to around 58. 75% which is 12% higher than conventional power amplifiers at 918 MHz operation frequency.

关 键 词：相位匹配 谐波控制 功率附加效率 功翠放大詈苷 

分 类 号：TN431[电子电信—微电子学与固体电子学] TN722.75