Title :
FDTD analysis of meta-screens for sub-wavelength focusing
Author :
Ludwig, Alon ; Eleftheriades, George V. ; Sarris, Costas D.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
The Finite-Difference Time-Domain (FDTD) method is used to simulate the electromagnetic problem of transmission through a metallic screen with slots of sizes and spacing that were chosen using the spatially shifted beam approach to achieve subwavelength focusing. The challenges related with the modeling of such sub-wavelength focusing meta-screens are demonstrated via the study of numerical convergence.
Keywords :
electromagnetic wave propagation; finite difference time-domain analysis; FDTD analysis; electromagnetic problem; finite-difference time-domain method; meta-screens; metallic screen; spatially shifted beam approach; sub-wavelength focusing; Convergence; Finite difference methods; Focusing; Lenses; Shape; Solid modeling; Time domain analysis;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996801
