开槽波导功率合成技术分析

在毫米波频段实现基于固态微波器件的高功率放大器，功率合成是一项不可或缺的技术。介绍了一种基于开槽波导耦合微带1分8的功率分配合成网络。这种结构的主要优点是具有较好的集成度，较高的功率合成效率，还可以为功率单片微波集成电路（MMIC）提供效率比较高的散热。通过软件仿真分析，该结构具有较好的功率分配能力和隔离度。

Research on Power Combining Technology Based on Slotted- waveguidc-to-microstrip Coupling

To realize solid-state microwave power amplification at high power levels and frequencies, power dividing and combining techniques are indispensable. A 1-to-8 traveling wave power divider/combiner based on a slotted-waveguide-to- microstrip power-dividing/combining circuit is presented. The advantages of this structure are its low profile and its potential for high power-combining efficiency. In addition, efficient heat sinking of monolithic microwave integrated circuit （MMIC） devices is achieved. The simulation result demonstrates that this structure has better power dividing capability and better isolation between the output ports.