基于ADS高线性微波功率放大器设计  

Design of High Linearity Microwave Power Amplifier Based On ADS Software

作　　者：庄东曙 陈文嘉 李跃进 黄锦香 

机构地区：[1]南京熊猫股份有限公司宽带移动研发部

出　　处：《通信与广播电视》2010年第3期22-27,共6页Communication & Audio and Video

摘　　要：基于ADS软件,选取合适的静态直流工作点,采用负载牵引法得到LDMOS晶体管MRF21030的输出和输入阻抗特性,并通过设计和优化得到最佳的共轭匹配网络,并采用功率回退的设计方法,设计出应用于专用TD-SCDMA领域的高线性功率放大器。ADS设计仿真表明该功率放大器P1dB输出功率可达44.666dBm,三阶互调失真IMD3小于-60dBc,具有线性度高、稳定性好、增益平坦度小等优点。Based on ADS software and the appropriate static direct current working point,we get the output and input impedance characteristic of LDMOS transistor MRF21030 by the use of load-pull method,and the optimal conjugate match network through design and optimization.We also design the high linearity power amplifier for TD-SCDMA with the approach of power back-off.ADS design simulation indicates the output power of this power amplifier P1dB could reach 44.666dBm with IMD3 less than-60dBc.It has the features of high linearity,good stability and small gain flatness.

关 键 词：LDMOS功率放大器 ADS 负载牵引法 功率回退 共轭匹配 

分 类 号：TN722[电子电信—电路与系统]