一种改进型毫米波开槽波导空间功率分配合成网络  

An improved slotted-waveguide spatial power divider/combiner circuit for Ka-band

作　　者：梁荣江[1] 李思敏[1] 周海京[1,2] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]北京应用物理与计算数学研究所,北京100088

出　　处：《电子技术应用》2009年第1期102-105,共4页Application of Electronic Technique

摘　　要：研究了一种改进型毫米波开槽波导空间功率分配合成网络。该功率分配/合成结构具有合成效率高且合成效率基本不受合成路数的限制、尺寸小、设计过程灵活和容易散热等特点。在详细阐述了其原理及设计过程的基础上,设计了一个中心频率为38GHz的Ka频段末端的功率合成器。仿真结果显示此种结构回波损耗小于-12dB的带宽达2.3GHz,相对中心频率带宽约为6%,且插入损耗小于0.3dB,可见具有极低的插入损耗和较低的回波损耗,从而验证了此种结构的可行性。In this paper,an improved slotted-waveguide spatial power divider/combiner circuit for Ka-band is presented.This circuit provides not only a high power-combining efficiency which is less depended on the combining way numbers over a wide bandwidth and flexibility in the design process, but also efficient in heat sinking.Its principles and design process are synoptically presented.A representative example of 38 GHz solid-state power amplifier is assessed. Result indicates that this circuit has a small insertion loss about 0.3 dB and a low return loss that is better than -12 dB with a bandwidth of approximately 2.3 GHz,which is about 6% relative to the center frequency. As a result, this circuit＇s feasibility is validated.

关 键 词：毫米波 开槽波导 空间功率合成 波导-微带过渡 

分 类 号：TN454[电子电信—微电子学与固体电子学]