矩形波导到圆波导模式变换器的优化设计

在圆形槽波导微波毫米波器件中，常遇到矩形一圆形槽波导的模式变换问题，而矩形一圆波导模式变换是矩形一圆形槽波导模式变换的重要组成部分。本文应用有限元方法，首先由分析N端口波导结问题过渡到两端口的矩形一圆波导模式变换器,然后针对现有模式变换器的圆端口面的电场极化方向倾斜的问题利用加圆波导段的方法进行了优化，并设计了一个新的反射微小,结构紧凑和电场极化方向竖直的矩形一圆波导模式变换器．计算结果满足了设计要求。

Optimized Design of Rectangle Waveguide to Circular Waveguide Mode Convertor

Some questions are often met with mode conversion of rectangle waveguide to circular groove waveguide in which mode conversion of rectangle waveguide to drcular waveguide is important. The finite dement method is applied to analyzed N-port waveguide junction to translate two-port mode convertor. Afterward the rectangle waveguide to circular waveguide mode convertor in practice is optimized by adding a segment of circle waveguide because E field polarization direction of its circle port is gradient. And a new rectangle waveguide to circular waveguide mode convertor with little reflectance, compact structure and vertical E field polarization direction, is designed. As a result the design request is satisfied.