一种基于Wilkinson功率合成的双向放大器  

A Bi-directional amplifier with Wilkinson power combiner

作　　者：陶煜[1] 庄建东[1] 武文娟 高怀 

机构地区：[1]东南大学集成电路学院,南京210096 [2]苏州市射频功率器件及电路工程技术研究中心,苏州215123

出　　处：《国外电子测量技术》2011年第10期72-75,共4页Foreign Electronic Measurement Technology

摘　　要：本文提出了一种支持IEEE802.11n标准的高性能双向放大器设计方案,该放大器采用了基于微带线的Wilkinson功率分配/合成网络进行双路功率放大的合成,既保证了大的功率输出,而且解决了传统单功放结构下EVM指标差的问题。文章通过仿真验证了功率合成网络的可行性,并设计出了高输出功率高线性度的双向放大器。实验的测试结果表明,采用该方案的双向放大器发射通道的输入反射系数小于-20dB,在30dBm输出时,EVM为-30.4dB,满足IEEE802.11n的标准。This paper presents a design scheme of high performance Bi-directional amplifier which support IEEE 802.11n standard.Through the method of double road power synthesis which based on the structure with Wilkinson power divider/combiner.The amplifier not only achieves a high power output,but also solves the problem of the shortage EVM performance of traditional single amplifier structure.Simulation results show that the power combination is feasible and a Bi-directional amplifier with high power and linearity is designed.Measurement results show that the input reflection coefficient of the transmitter is less than-20 dB,the EVM is-30.4 dB,when the output power is 30 dBm.

关 键 词：WILKINSON功分器 双向放大器 WLAN 

分 类 号：TN925[电子电信—通信与信息系统]