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由于毫米波具有高分辨率、全天候性及某些光波无法代替的优点,因此近年来毫米波技术有很大发展,应用越来越广泛。阻抗变换和模式变换元件是毫米波技术中重要的元件。本文对切比雪夫型(或等波纹型)阻抗元件进行分析,计算出各阶梯的阻抗,使之驻波比阶梯数相同的任何其他形式的阶梯变换器都小。并根据波型变换所需的边界条件设计出各阶梯的几何尺寸。这样把常规的阻抗变换器和模式变换器统一为一个元件——阻抗模式变换元件,并给出了消除不连续电容效应的方法。这种元件体积小,重量轻,结构简单,工艺方便,电气性能好,特别适用于飞行器。
As millimeter-wave with high resolution, all-weather and some light waves can not replace the advantages of the millimeter-wave technology in recent years have made great progress, more and more widely used. Impedance conversion and mode conversion elements are important components in millimeter-wave technology. In this paper, the Chebyshev (or equivalent) impedance components are analyzed to calculate the impedances of the individual steps so that the standing wave is smaller than any other form of staircase converter of the same order. The geometric dimensions of each step are designed according to the boundary conditions required by the waveform transform. In this way, the conventional impedance converter and mode converter are unified into one element - impedance mode conversion element, and a method of eliminating the discontinuous capacitance effect is given. This kind of component is small in size, light in weight, simple in structure, convenient in technology and good in electrical performance, especially suitable for aircraft.