探讨了椭圆、圆环、方环、十字交叉形、圆形、正方形、正三角形及双矩形孔缝在2～18GHz频率范围内的耦合系数,并与矩形孔缝的耦合特性进行了比较.结果表明:各种不同形状孔缝微波耦合的共振特性与其纵横比有关,纵横比较大的孔缝耦合共振现象比较明显,纵横比较小的孔缝耦合特性趋于高通;各种孔缝的共振频率与孔缝长度有密切关系.

This paper experimentally studies the coupling coefficient of microwaves into apertures with different shapes and sizes. The apertures used in the experiment mainly include elliptic aperture, circle, square loop, crossed rectangular slots, circular aperture, square aperture, equilateral triangular aperture, and parellel-oriented rectangular slots. The coupling coefficients for these apertures in the frequency range from 2 to 18GHz are presented and compared with that for the rectangular slot.