基于波导合成高效高功率密度Ku波段功放  

High Efficiency and High Power Density Ku-Band Power Amplifier Based on Waveguide Combiner

作　　者：樊锡元[1] 张瑞[1] 沈项东[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2014年第2期223-228,共6页Radar Science and Technology

摘　　要：提出了一种基于BB180波导电桥合成器与波导微带双探针相结合的Ku波段高效空间合成方案,波导合成实现了高效率,波导微带双探针结构实现功率模块的叠层安装,在Ku波段通过二者的结合实现了高功率密度。首先利用HFSS软件分析波导合成器和波导微带双探针模型,给出了仿真结果。在工程设计中采用GaN功率芯片构成放大器小模块单元,输出峰值功率25W。功放采用8个模块单元合成,在Ku波段合成饱和输出180W峰值功率(19%占空比),合成效率超过85%,附加效率高于25%,功率密度达到0.135W/cm3,实现了Ku波段微波高效合成与高功率密度输出。Based on BB180 waveguide power combiners and double-channel micro-strip probe transition, a compact high efficiency power-combing system is presented in this paper.High efficiency is realized by using waveguide-combiner,and utilizing double-channel microstrip probe transition structure,the power mini-modules are stacked,so high power density output is realized in Ku band.Firstly,by analyzing the model of waveguide combiner and double-channel micro-strip probe transition using HFSS software,the simulation result is provided.In engineering design,peak-power output of the mini-module constructed by GaN MMIC is 25W.The HPA module combines 8 modules to produce up to 180W output in Ku-band（19%duty cycle）.The total passive combing efficiency is up to 85%,PAE is over 25%,and the power density is 0.135 W/cm3 .So a high efficiency and high power density RF output amplifier is realized in Ku-band.

关 键 词：波导合成器 波导-微带双探针过渡 空间功率合成 高功率密度 

分 类 号：TN73[电子电信—电路与系统] TN957