一种Ka波段链式功率合成结构设计  

Design on a Ka-band Traveling-wave Waveguide-based Power Divider/Combiner

作　　者：贾兵[1] 赵永久[1] 贺颖[1] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016

出　　处：《无线电工程》2014年第6期51-53,76,共4页Radio Engineering

基　　金：江苏高校优势学科建设工程资助项目

摘　　要：大功率固态功率放大器是很多先进通信系统的重要组成部分,基于波导的功率合成技术是一种提供大功率输出的有效方案,能将多个固态器件功率合成输出。提出了一种新颖的基于波导的4路链式功率分配合成结构,沿能量的传播方向依次插入多路微带探针实现等功率容量耦合,其中的4路功率分配结构在很宽的频带展现了极好的幅度一致性,大大提高了该结构的合成效率和合成带宽。通过对该结构的工作原理进行分析,给出了在背对背结构中反射信号上波峰产生的原因与消除方法。该结构具有在毫米波段易加工的优点,拥有良好的性能和工程实用价值。The solid-state high power amplifier is an important part of many advanced communication systems. Waveguide-based power combiner technique is an effective method which can provide high power output through combining multiple solid-state devices.In this paper,a Ka-band traveling-wave waveguide-based power divider/combiner is proposed.In this structure,multiple microstrip probes are inserted into the waveguide E-plane along the direction of energy propagation to implement equal power capacity coupling,and the four-way power divider performs very good amplitude consistency in large bandwidth,which improves combiner efficiency and combiner bandwidth. The cause of the reflection spikes in back-to-back structure and its eliminate methods are introduced based on analysis of the operational principle of this structure.This structure has such advantages as easy processing in millimeter-wave band,better perform-ance and good practical value.

关 键 词：波导功率合成 KA波段 波导-微带探针过渡 链式功率合成 

分 类 号：TN73[电子电信—电路与系统]