Design and experiment of miniaturized small resonant aperture using modified ridge structure

[摘要] A design method for a miniaturized small resonant aperture by modifying a ridge structure is presented, and its performance is verified experimentally. The proposed miniaturized aperture was designed by deforming the straight ridge structure of an H-shaped aperture with a two-step ridge of different lengths and widths, which resembles the capacitor symbol shape of the electric circuit. Experiment results show that the resonant frequency of the proposed aperture decreases from 5.06 GHz to 2.565 GHz (49.3%) compared to the conventional H-shaped aperture. Its transmission cross section increased by 3.78 times, and the aperture length-to-wavelength ratio is reduced to 0.09.

[学科分类] 电子、光学、磁材料

[关键词] miniaturized;small resonant aperture;modified ridge;capacitor symbol shape;lower resonant frequency