A Novel Miniaturized-Element Frequency Selective Surface Having a Stable Resonance

In this letter, we propose a miniaturized periodic element for constructing a band-pass frequency selective surface (FSS) that demonstrates an excellent resonance stability performance with respect to different polarizations and incidence angles. In contrast to traditional periodic elements with sizes comparable to a half of the wavelength at the resonant frequency, the size of the proposed element is reduced highly to only a tenth-wavelength. We created and examined a prototype of the miniaturized-element FSS. Both the simulated and measured results obtained demonstrate the claimed performance.