In this letter, we present frequency-selective transmission of a 2D (two-dimensionally) electromagnetic (EM) crystal. Such a 2D EM crystal consists of a finite stack of one-dimensionally metal-strip gratings. The rigorous mathematical formulation using the mode-matching method incorporating the Floquet solution was employed to calculate the scattering and guiding characteristics of the structure under consideration. Additionally, the experimental studies were also carried out to verify the numerical results. Significantly, the correlation between frequency-selective transmission and the Fabry-Perot resonance was clarified.
- Electromagnetic band-gap structures
- Electromagnetic crystals
- Two-dimensionally periodic structures