Conference Paper

Electromagnetic band-gap structures: classification, characterization, and applications

California Univ., Los Angeles, CA
DOI: 10.1049/cp:20010350 Conference: Antennas and Propagation, 2001. Eleventh International Conference on (IEE Conf. Publ. No. 480), Volume: 2
Source: IEEE Xplore

ABSTRACT When periodic structures interact with electromagnetic waves
amazing features result. In particular, characteristics such as
frequency stop-bands, pass-bands and band-gaps could be identified.
Surveying the literature, one observes that various terminology have
been used depending on the domain of the applications. These
applications are seen in filter designs, gratings, frequency selective
surfaces (FSS), photonic crystals and band-gaps (PBG), etc. We classify
them under the broad terminology of “electromagnetic band-gaps
(EBG)”. The focus of this paper is to present a powerful
computational engine utilizing finite difference time domain (FDTD)
technique integrated with the Prony method to analyze and understand the
unique propagation characteristics of different classes of complex EBG
structures such as, (a) FSS structures, (b) PBG crystals, (c) smart
surfaces for communication antenna applications, (d) surfaces with
perfectly magnetic conducting properties (PMC), (e) creation of
materials with negative permittivity and negative permeability, (f)
surfaces with reduced edge diffraction effects, and (g) the notion of
equivalent media. The performance of two types of the EBG structures
namely, single and multi-layered tripod FSS, and rectangular, triangular
and woodpile PBG crystals is detailed. Some of the potential
applications of these structures are highlighted