Title :
A physical bound on high impedance surfaces
Author :
Sjöberg, Daniel ; Gustafsson, Mats
Author_Institution :
Electr. & Inf. Technol., Lund Univ., Lund, Sweden
Abstract :
A high surface impedance can be achieved in a limited frequency band by using composite structures. Based on the principles of causality, passivity, linearity, and time translational invariance we demonstrate that this bandwidth is bounded by the thickness and magnetic polarizability per unit area of the structure at normal incidence.
Keywords :
antennas; electromagnetic wave propagation; causality; composite structure; high surface impedance; linearity; passivity; time translational invariance; Antennas; Bandwidth; Impedance; Slabs; Surface impedance; Surface waves;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2010 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-7304-5
DOI :
10.1109/LAPC.2010.5666293
