"Electromagnetic Band-Gap (EBG) materials are periodic structures. with properties of confinement and filtering of electromagnetic. radiation. In this work, EBGs with a simple geometry are considered,. as periodic one-dimensional multilayers, and their design is presented.. When the periodicity of such structures is interrupted, evanescent. modes can be localized. The particular case of a periodicity break along. a plane is considered in this chapter. A cavity made of two identical. mirrors separated by an air-filled spacing is studied, moreover its. equivalent layout obtained from the image theory is analyzed. An. interesting application to directivity enhancement of planar antennas is. devised. All the numerical results reported here are obtained by using a. commercial software implementing the finite-element method."
Frezza, F., Pajewski, L., Ponti, C., Schettini, G. (2011). EBG Superstrates for Directivity Enhancement of Antennas. In World Scientific Publishing (a cura di), Selected Topics in Photonic Crystals and Metamaterials (pp. 215-238). SINGAPORE : World Scientific Publishing Co. [10.1142/9789814355193_0007].
EBG Superstrates for Directivity Enhancement of Antennas
PAJEWSKI, LARA;PONTI, CRISTINA;SCHETTINI, Giuseppe
2011-01-01
Abstract
"Electromagnetic Band-Gap (EBG) materials are periodic structures. with properties of confinement and filtering of electromagnetic. radiation. In this work, EBGs with a simple geometry are considered,. as periodic one-dimensional multilayers, and their design is presented.. When the periodicity of such structures is interrupted, evanescent. modes can be localized. The particular case of a periodicity break along. a plane is considered in this chapter. A cavity made of two identical. mirrors separated by an air-filled spacing is studied, moreover its. equivalent layout obtained from the image theory is analyzed. An. interesting application to directivity enhancement of planar antennas is. devised. All the numerical results reported here are obtained by using a. commercial software implementing the finite-element method."I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
