Author

# Vito Daniele

Other affiliations: Istituto Superiore Mario Boella

Bio: Vito Daniele is an academic researcher from Polytechnic University of Turin. The author has contributed to research in topics: Integral equation & Diffraction. The author has an hindex of 15, co-authored 123 publications receiving 938 citations. Previous affiliations of Vito Daniele include Istituto Superiore Mario Boella.

##### Papers published on a yearly basis

##### Papers

More filters

••

TL;DR: In this article, a general procedure is given to factorize these matrices; it leads to an approach which, even if sometimes cumbersome, is uniform and allows the solution of new problems, and a new method is proposed which transforms simultaneous Wiener-Hopf equations in the form of Fredholm integral equation of the second kind.

Abstract: Vector Wiener–Hopi equations previously solved in closed form by using different techniques, involve matrices having a particular structure A general procedure is given to factorize these matrices; it leads to an approach which, even if sometimes cumbersome, is uniform and allows the solution of new problems In addition a new method is proposed which transforms simultaneous Wiener–Hopf equations in the form of Fredholm integral equation of the second kind

81 citations

•

01 Aug 2014

TL;DR: This advanced research monograph is devoted to the Wiener-Hopf technique, a function-theoretic method that has found applications in a variety of fields, most notably in analytical studies of diffraction and scattering of waves.

Abstract: This advanced research monograph is devoted to the Wiener-Hopf technique, a function-theoretic method that has found applications in a variety of fields, most notably in analytical studies of diffraction and scattering of waves. It provides a comprehensive treatment of the subject and covers the latest developments, illustrates the wide range of possible applications for this method, and includes an extensive outline of the most powerful analytical tool for the solution of diffraction problems. This will be an invaluable compendium for scientists, engineers and applied mathematicians, and will serve as a benchmark reference in the field of theoretical electromagnetism for the foreseeable future.

73 citations

••

TL;DR: In this paper, a new Wiener-Hopf approach for the solution of impenetrable wedges at skew incidence is presented, and mathematical aspects are described in a unified and consistent theory for angular region problems.

Abstract: A new Wiener-Hopf approach for the solution of impenetrable wedges at skew incidence is presented. Mathematical aspects are described in a unified and consistent theory for angular region problems. Solutions are obtained using analytical and numerical-analytical approaches. Several numerical tests from the scientific literature validate the new technique, and new solutions for anisotropic surface impedance wedges are solved at skew incidence. The solutions are presented considering the geometrical and uniform theory of diffraction coefficients, total fields, and possible surface wave contributions

68 citations

••

TL;DR: A general theory to factorize the Wiener‐Hopf (W‐H) kernel using Fredholm Integral Equations (FIE) of the second kind is presented and a new analytical method to factorizes rational matrix kernels is also described.

Abstract: [1] A general theory to factorize the Wiener-Hopf (W-H) kernel using Fredholm Integral Equations (FIE) of the second kind is presented. This technique, hereafter called Fredholm factorization, factorizes the W-H kernel using simple numerical quadrature. W-H kernels can be either of scalar form or of matrix form with arbitrary dimensions. The kernel spectrum can be continuous (with branch points), discrete (with poles), or mixed (with branch points and poles). In order to validate the proposed method, rational matrix kernels in particular are studied since they admit exact closed form factorization. In the appendix a new analytical method to factorize rational matrix kernels is also described. The Fredholm factorization is discussed in detail, supplying several numerical tests. Physical aspects are also illustrated in the framework of scattering problems: in particular, diffraction problems. Mathematical proofs are reported in the paper.

64 citations

••

TL;DR: The solution for the diffraction by a wedge with given face impedances (the Malyuzhinets problem) is obtained in closed form by an explicit factorization of the kernel.

Abstract: Diffraction by impenetrable wedges having arbitrary aperture angle is studied by means of the Wiener--Hopf (W-H) technique. A system of functional equations called generalized Wiener--Hopf equations (GWHE) is obtained. Only for certain values of the aperture angle are these equations recognizable as standard or classical Wiener--Hopf equations (CWHE). However, in all cases a mapping is found that reduces the GWHE to CWHE. It means that the diffraction by an impenetrable wedge always reduces to a standard W-H factorization. The solution for the diffraction by a wedge with given face impedances (the Malyuzhinets problem) is obtained in closed form by an explicit factorization of the kernel.

62 citations

##### Cited by

More filters

••

TL;DR: In this paper, a compact representation of the electric and magnetic-type dyadic Green's functions for plane-stratified, multilayered, uniaxial media based on the transmission-line network analog along the aids normal to the stratification is given.

Abstract: A compact representation is given of the electric- and magnetic-type dyadic Green's functions for plane-stratified, multilayered, uniaxial media based on the transmission-line network analog along the aids normal to the stratification. Furthermore, mixed-potential integral equations are derived within the framework of this transmission-line formalism for arbitrarily shaped, conducting or penetrable objects embedded in the multilayered medium. The development emphasizes laterally unbounded environments, but an extension to the case of a medium enclosed by a rectangular shield is also included.

774 citations

•

01 Jan 1966

TL;DR: Boundary value problems in physics and engineering were studied in this article, where Chorlton et al. considered boundary value problems with respect to physics, engineering, and computer vision.

Abstract: Boundary Value Problems in Physics and Engineering By Frank Chorlton. Pp. 250. (Van Nostrand: London, July 1969.) 70s

733 citations

••

TL;DR: In this paper, a theoretical parametric analysis of a TE/sub 11/-to-HE/sub11/ mode converter consisting of a section of cylindrical corrugated waveguide with varying slot depth is presented.

Abstract: A theoretical parametric study is given of a TE/sub 11/-to-HE/sub 11/ mode converter consisting of a section of cylindrical corrugated waveguide with varying slot depth. The analysis makes use of modal field-matching techniques to determine the scatter marks of the mode converter from which we deduce its propagation properties. It is shown that a mode converter consisting of only five slots achieves a return loss better than 30dB over the band 2.7

195 citations

••

TL;DR: In this paper, two procedures are developed for lumped-parameter circuit modeling of injection probes for bulk current injection (BCI), and both procedures are based on frequencydomain scatteringparameter measurements, and refer to a clamped wiring composed of a single-ended interconnection.

Abstract: In this paper, two procedures are developed for lumped-parameter circuit modeling of injection probes for bulk current injection (BCI). Both procedures are based on frequency-domain scattering-parameter measurements, and refer to a clamped wiring composed of a single-ended interconnection. One procedure exploits a black-box approach, requires a calibration fixture, and is suited for practical implementation. The other is based on circuit interpretation of coupling and propagation effects, and is aimed at a theoretical analysis of injection. The former procedure requires an accurate deembedding of fixture-related effects, and the latter requires a detailed knowledge of the geometry of the probe interior parts. The two procedures lead to probe circuit models topologically equivalent, with lumped-Pi structure, performing well in the frequency band of interest for BCI. In the derivation, it is shown that the probe input impedance is the central quantity for the characterization of the frequency-dependent properties of the ferrite core, and for the modeling of inductive coupling (dominant effect). The probe circuit models developed in this paper go over the frequency limitations of previous models, and allow for accurate description of the frequency-dependent voltage transfer ratio and series impedance of the probe.

137 citations