An optimization approach based on the genetic algorithms(GAs)for Eplane branch-waveguide couplers is proposed in this paper. The GAs optimization strategies are discussed in detail. A design example for 4-port 5-branc...An optimization approach based on the genetic algorithms(GAs)for Eplane branch-waveguide couplers is proposed in this paper. The GAs optimization strategies are discussed in detail. A design example for 4-port 5-branch 5-dB waveguide couplers is presented. Meanwhile,in this example,some results simulated by the HFSS software,which based on GAs optimization, and other results synthesized by the equivalent-network technique are all presented. Based on the comparison of these results, we find that the results optimized by GAs satisfy the expected requirements. The frequency responses of the couplers with this optimization are improved obviously.展开更多
阐述了3 dB分支波导定向耦合器、波导—微带双探针过渡、改进型波导T型结的原理,介绍了一种4路功率分配/合成网络。提出了一种8路功率分配/合成器,其结构具有插入损耗低、输入驻波好、幅度相位一致性好等优点。研制了50 W Ka频段固态功...阐述了3 dB分支波导定向耦合器、波导—微带双探针过渡、改进型波导T型结的原理,介绍了一种4路功率分配/合成网络。提出了一种8路功率分配/合成器,其结构具有插入损耗低、输入驻波好、幅度相位一致性好等优点。研制了50 W Ka频段固态功率放大器,由驱动级放大器、8路功率分配/合成器和8个7 W功放模块组成,在29~31 GHz频率范围内实现了大于50 W的线性输出功率,合成效率高于80%。展开更多
文摘An optimization approach based on the genetic algorithms(GAs)for Eplane branch-waveguide couplers is proposed in this paper. The GAs optimization strategies are discussed in detail. A design example for 4-port 5-branch 5-dB waveguide couplers is presented. Meanwhile,in this example,some results simulated by the HFSS software,which based on GAs optimization, and other results synthesized by the equivalent-network technique are all presented. Based on the comparison of these results, we find that the results optimized by GAs satisfy the expected requirements. The frequency responses of the couplers with this optimization are improved obviously.
