Artificial versus natural crystals: Effective wave impedance of printed photonic bandgap materials

Citation
Ca. Kyriazidou et al., Artificial versus natural crystals: Effective wave impedance of printed photonic bandgap materials, IEEE ANTENN, 48(1), 2000, pp. 95-106
Citations number
26
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
ISSN journal
0018926X → ACNP
Volume
48
Issue
1
Year of publication
2000
Pages
95 - 106
Database
ISI
SICI code
0018-926X(200001)48:1<95:AVNCEW>2.0.ZU;2-Y
Abstract
Printed metallo-dielectric photonic bandgap (PBG) materials are analyzed us ing an analytical approach based on multipole expansions for the scattered fields off individual scatterers and a transfer-matrix method for reconstru cting the total scattered fields created by successive lattice planes of th e artificial crystal. An effective description of the PEG medium is derived and its correspondence with natural crystals is further advanced through a n analysis based on Lorentzian response functions, which characterize natur al crystals. The effective wave impedance and bulk reflection coefficient o f the medium are provided and their properties inside and outside the bandg aps are examined. The presented treatment for these effective response func tions extends far beyond the traditional effective medium theory (EMT) limi ts.