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This article deals with a study of novel classes of metamaterial inclusions based on space-filling curves. The graph–theoretic Hamiltonian-path (HP) concept is exploited to construct a fairly broad class of space-filling curve geometries that include as special cases the well-known Hilbert an Peano curves whose application to metamaterial inclusions has recently been proposed. In this framework, the basic properties of HP are briefly reviewed, and a full-wave study of the electromagnetic properties of representative grid-graph HP geometries is carried out. Applications to metamaterial inclusions are explored, with focus on artificial magnetic conductors with reduced polarization-sensitivity. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:2520–2524, 2006; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.21982 [ABSTRACT FROM AUTHOR]

This work presents the design of a microwave opened applicator useful to perform the Microwave Induced Steam Distillation (MISD) process for soil remediation treatments. The prototype has been also realized and used to irradiate a 40 x 30 cm area with a given electromagnetic field distribution. Experiments carried out by in situ operations on a soil contaminated with VOC's are reported. Finally, the experimental data collected are described by a mathematical model previously proposed. [ABSTRACT FROM AUTHOR]

A novel method for the systematic derivation of analytical approximations of the fundamental-mode dispersion equation and field distribution of graded-index planar waveguides with uniform cladding is presented. The method is based on a Stevenson–Padé approach, recently introduced by the authors for the numerical analysis of graded-index optical fibers. A number of examples are presented in order to illustrate the power and accuracy of the method. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 27: 158–162, 2000. [ABSTRACT FROM AUTHOR]

A rigorous framework and an efficient numerical implementation for computing leaky-wave poles for grounded inhomogeneous dielectric (multi-) layers are presented. The pertinent transverse-resonance (eigenvalue) equations, obtained by power-series solution of the related Sturm–Liouville problems, are solved by means of a Padé-approximant-based root-finding procedure. Numerical simulations show that very accurate results (ten decimal figures, on average) are usually obtained with a mild computational and programming effort, over a reasonably wide spectral range. ©2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 135–140, 2000. [ABSTRACT FROM AUTHOR]

A systematic spectral-domain approach is described for obtaining higher order electromagnetic impedance boundary conditions for isotropic, longitudinally inhomogeneous, dielectric coatings on a polarization-preserving impedance plane. Representative computational examples including single- and two-layer inhomogeneous coatings are discussed to illustrate the accuracy of the proposed approach. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 249–254, 1999. [ABSTRACT FROM AUTHOR]