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本文分析了耦合介质波导的特性。利用强耦合结构,可以得到较宽的频带。在分析定向耦合器时,利用了基模与二次模迭加,而分析功率分配器时,可用基模与三次模的迭加。对场分布(包括纵向与横向)的实测证实了这种分析方法的正确性,耦合波导的带宽与它的结构及介电系数有关,在对它们作优化选择,并采用Y型结构后,可以得到最大带宽。文中给出了在1.25公分及8毫米频段上的实验结果,它们与理论计算结果相当符合.
This paper analyzes the characteristics of coupled dielectric waveguides. The use of strong coupling structure, you can get a wider band. In the analysis of the directional coupler, the use of the base mode and the second mode superposition, and analysis of the power divider, the base mode and the superposition of the third mode. Field distribution (including the vertical and horizontal) measured to confirm the correctness of this method of analysis, the coupling of the waveguide bandwidth and its structure and dielectric coefficient, in their optimal choice, and the use of Y-type structure, you can Get the maximum bandwidth. The experimental results on the 1.25 cm and 8 mm bands are given, which are in good agreement with the theoretical calculations.