X波段高功率微波四路合成器的设计与仿真研究

Design and Simulation Research of X-Band High Power Microwave Four-Way Combiner Research

为了获得更高的输出功率,开展了四路高功率微波合成器的设计与研究。运用极化正交模式耦合的方法,以及TE11模有垂直和水平两种耦合系数相差极大的极化状态,设计并验证两路三通道耦合器中电磁波相同模式和相同极化方向耦合及能量传输,最后在它们的理论与仿真基础上,设计一种可行的四路高功率微波合成器结构,使四路高功率微波利用波导合成并输出。该高功率微波合成器主要由输入段、耦合段及输出段三部分组成,合成器有四个输入段,并且与四个输入端口相连,四个输入段部分为副波导通道;主通道为输出段,与输出端口直接相连。四个副通道分别利用各自与主通道之间的狭长耦合缝将能量耦合到主通道中,经主通道输出口输出。利用电磁仿真模拟软件,副通道的能量耦合效率能够达到95%以上,可以有效实现四路微波高效合成,为功率合成器提供一种应用途径。

In order to obtain higher output power,the design and research of four-channel high-power microwave combiner with the method of polarization orthogonal mode coupling is proposed in this paper.The TE11-mode has vertical and horizontal polarizations with very different coupling coefficients.The electromagnetic wave coupling and energy transmission are designed and verified with same polarization direction in the two-way three channel coupler.Finally,a feasible four-way high-power microwave combiner is designed to make four-way microwave combined and output based on their theory and simulation.The combiner is mainly composed of input section,coupling section and output section.The four input ports are connected to four input section.The output section is connected to output port.The four microwaves use the long and narrow coupling slots coupled to the main-channel,and output through the common port.By electromagnetic simulation software,the energy coupling efficiency of the sub-channel to main-channel can reach more than 95%,which can efficiently realize the high-power efficiency combination of four-way microwave,and provide an application path for power combiner.Directional couplers are widely used in many fields which are related to microwave.The development of technology is putting higher requirements for directional couplers with broadband and higher power capacity.Waveguide structure,with its large power and simple processing process has become the basis structure of high power directional couplers.An synthesis method for X band power based on circular waveguide.In this paper,a four-road synthesis of circular waveguide coupler is proposed,the cylindrical waveguide which is joined with the output port is named main channel,and the other cylindrical waveguides are called associate channel,the four associate channel are respectively back to back with the main channel.The energy of associate channel which uses long slits is coupled to the output port of main channel,and the coupling energy efficiency of the associate channel is above 95%.