In this paper an efficient way to analyze the scattering from dielectric cylinders is presented. The technique relies on the method of analytical regularization (MAR) (A.I. Nosich, 1999), (M. Lucido ...et al., 2006), R. Araneo et al., 2002), (M. Lucido et al., 2004) applied to the solution of integral equations. The analytical regularization is achieved by using a Galerkin scheme with basis and testing functions factorizing the correct edge behavior of the electromagnetic field at edges. The outline of the theory and some numerical examples are given.
In M. Lucido et al. (2004) and M. Lucido et al. (2006) a new approach has been introduced, based on the method of analytical regularization (MAR):: it is shown that the use of a Galerkin scheme with ...expansion functions ensuring the correct edge behaviour and continuity conditions of the current allows for an efficient solution of the electric and magnetic field integral equations (EFIE and MFIE) describing the problem, achieving a quick convergence, and therefore small matrices to be numerically computed, and an effective control of the truncation error, which is quite difficult by using other conventional numerical methods. In M. Lucido et al. (2006) the method has been extended to the analysis of open polygonal cylinders, for which the MFIE cannot be used. A further generalization is presented in the present contribution, in order to analyze a "tree-shaped" open structure, which is useful, for instance, in radio propagation modeling.
This paper presents a generalization of the expansion series used to study the electromagnetic scattering from convex polygonal section cylinders. The paper shows some convergence tests and ...comparisons with literature and with the commercial software CST Microwave Studio
An efficient method for the analysis of the electromagnetic scattering by perfectly conducting triangular section cylinders is presented. The efficiency of the method stems from the factorization of ...the right edge behavior of the fields obtained by means of a generalization of the Neumann series. The application of the method of moments is therefore not cumbersome nor time consuming.
Full wave analysis of leaky-wave antennas Lucido, M.; Migliore, M.D.; Panariello, G. ...
2008 IEEE Antennas and Propagation Society International Symposium,
2008-July
Conference Proceeding
Leakage from slotted waveguides is a well-known phenomenon and has been thoroughly investigated during the past decades. The interest in leaky-wave antennas mainly stems from the possibility of ...scanning the beam with frequency 1. The analysis of slotted waveguides has been first performed by means of a transverse network representation of the open structure since the milestone paper by Goldstone and Oliner 2. As a matter of fact, the method is simple but accurate, and can be easily extended to deal with structures more complicated than the standard slitted waveguide addressed in 2, such as groove guides and stub-loaded waveguides 3-5. Unfortunately it is not always possible to find a transverse equivalent network, in which case it is necessary rely on more general, but time-consuming, numerical methods.
