Ku频段80W固态功率放大器的设计与实现

摘要

针对Ku频段波导尺寸长、 波导合成体积大的现状, 采用基于双层双对脊鳍线的新型空间功率合成技术, 综合运用微带合成、 波导合成等多种合成相结合的方式, 在Ku频段实现了32路高效、 小体积的功率合成. 用三维电磁仿真软件CST和热设计软件ICEPAK进行优化仿真, 并依托高精度机加工技术, 实现了Ku频段1 dB压缩点大于80 W的连续波输出功率.%Considering the problems of large waveguide dimensions and large volume waveguide synthesis of Ku-band, 32-way power combining is achieved with small volume and high efficiency by adopting a new spatial power combining technology based on double antipodal fin-line,and by combining a variety of synthesis methods such as microstrip synthesis and waveguide synthesis.A con-tinuous wave power greater than 80 W at 1 dB compression point in Ku-band is achieved by means of three-dimensional electromagnetic simulation software CST and thermal design software ICEPAK as well as high-precision processing technology.