Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

[摘要] The transmission characteristics of a frequency selective surface (FSS) consisting of small resonant circular apertures with a ridge are related to the transmission cross section of a single ridged aperture, and the performance is verified experimentally. The FSS structure with a ridged circular aperture has a lower resonant frequency, enlarged fractional bandwidth, and a larger wavelength-to-periodicity ratio compared to an FSS with a conventional circular aperture. Experiment results show that the resonant frequency of the proposed FSS structure can be lowered from 13.98 GHz to 7.30 GHz (47.8%) by adding the ridge.

[学科分类] 电子、光学、磁材料

[关键词] frequency selective surface;small resonant aperture;ridge;band pass filter;lower resonant frequency