毫米波10W连续波空间功率合成放大器设计  

Design of a 10W CW Millimeter Spatially Power Combined Amplifier

作　　者：王正伟[1] 何备 补世荣[1] 罗正祥[1] 

机构地区：[1]电子科技大学光电信息学院,成都610054 [2]绵阳九洲电器集团,绵阳621000

出　　处：《微波学报》2012年第2期75-78,共4页Journal of Microwaves

基　　金：国家自然科学基金(61001024)

摘　　要：介绍了一种基于BJ-320波导3dB定向耦合器、波导功分/合成器和波导-微带探针过渡相结合的8路高效、结构紧凑的波导内空间功率合成方案。此方案的结构具有容差大、容易加工和散热等优点,并且创新使用高隔离度的波导电桥实现两个4路合成器的连接,提高合成通道间的隔离度,减小合成链路间耦合干扰。推动功放和末级功放采用相同的GaAs MMIC功放芯片,在33～36GHz频率范围内实现饱和最小12W连续波功率输出,合成效率高于75%,附加效率高于11.9%,在毫米波频段实现了高效功率合成和大功率输出。This paper presents an 8 ways compact high efficiency spatially power-combining system based on BJ-320 waveguide coupler,waveguide power divider/combiners and micro-strip probe transitions.This system has advantages of large tolerance,easy to manufacture,good heat dissipation,and so on.The high isolation of waveguide coupler is used to connect two 4-way combiners to improve isolation among the combining channels.It reduces the impact between link channels.The same GaAs MMICs are used in both of promote-amplifier and final-amplifier,which implement power of saturation continuous wave with 12W in 33~36GHz.The splitter/combiner coefficient is larger than 75%,power added efficiency is larger than 12.9%,and high efficient synthesis in millimeter-wave bands.

关 键 词：波导耦合器 波导-微带探针过渡 空间功率合成 连续波 毫米波 

分 类 号：TN722.75[电子电信—电路与系统]