X波段百兆瓦级高功率微波合成器设计及实验研究

An X band synthesizer for a few hundred megawatt level power microwaves

介绍了一种极化正交全耦合型高功率微波(HPM)合成器,其主要用途是实现两路HPM分时共用一个天线辐射.合成器主要由输入段、耦合段及输出段三部分组成,利用该合成器能够实现一个吉瓦级HPM脉冲序列和一个百兆瓦级HPM脉冲序列由一个公共端口共同输出.合成器输入段有与主通道及副通道相连的两个输入端口,合成器的主通道与公共输出口直接相连,副通道利用连续长缝结构将能量耦合进入主通道经公共输出口输出.利用数值模拟方法对合成器进行了优化设计,合成器主通道的能量传输效率可达99%以上,副通道的能量耦合效率可达96%以上.建立了HPM测试平台,测试表明:合成器主通道的能量传输效率接近100%,功率容量大于1GW;副通道的能量耦合效率大于87%,功率容量约为300MW.合成器工作于X波段,工作带宽约为200MHz.

A synthesis method for a few hundred megawatt level power microwave is presented in this paper.Based on the coupling wave theory and the polarized wave orthogonal theory,the pulse series of one gigawatt level power microwave and one hundred megawatt level power microwave can be put in two separate ports and put out from one common port.The synthesizer is unitized by two cylindrical waveguides which are back to back combined;the cylindrical waveguide which is joined with the output port is named main channel,and the other cylindrical waveguide is called associate channel.The main channel transmits horizontally polarized TE011 mode microwave,and the operation frequency band is only limited to the barrier frequency λc.The associate channel transmits vertical polarized TE011 mode microwave,and the operation frequency band can reach up to several hundred mega hertz.High power experiment indicates that the transmission energy efficiency of the main channel is nearly 100% and the coupling energy efficiency of the associate channel is above 87%,the power capacity of the main channel is more than 1GW and that of the associate channel is about 300 MW.