Ka波段高效紧凑型功率放大器设计  

Design of a Ka-band High Efficiency Compact Power Amplifier

作　　者：刘志红[1] 武华锋[1] 李兵[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2013年第2期59-63,共5页Fire Control Radar Technology

摘　　要：提出了一种基于波导四路功分/合成器和波导—微带探针过度相结合的空间功率合成方案。使用波导定向耦合器实现双层两路合成器的紧凑连接,提高合成通道间的隔离度,减小合成链路间的耦合干扰。采用四只GaAs MMIC功放芯片,制作出高效率毫米波放大模块,在34GHz～36GHz频率范围内实现连续波15W饱和功率输出,合成效率高于95%,功率附加效率大于20%,在Ka波段实现了高效功率合成和大功率输出。A scheme for spatial power synthesizing on basis of combining waveguide 4 - way power divider/synthesizer and waveguide - to - microstrip probe transition is presented. A waveguide directional coupler is utilized in scheme to implement compact connection of dual - layer double - way synthesizer and increase isolation between synthesizing channels and to reduce coupling interference between synthesizing links. Four pieces of GaAs MMIC power amplifier chips are used to build high efficiency millimeter wave amplifying module to implement 15W of continuous wave saturation power output within frequency range of 34GHz -36GHz. Its synthesizing efficiency is more than 95% , the power additional efficiency is more than 20% , so high efficiency power synthesizing and high power output can be implemented in Ka -band.

关 键 词：毫米波 放大器 波导-微带过渡 空间功率合成 

分 类 号：TN72[电子电信—电路与系统]