Title :
Numerical analysis of diffracting perforated shields
Author :
Angeli, Marco ; Cardelli, Ermanno
Author_Institution :
Ist. di Energetica, Perugia Univ., Italy
fDate :
3/1/1997 12:00:00 AM
Abstract :
This paper deals with the numerical analysis of the behavior of diffracting perforated shields, and in particular of honeycomb structures. The diffracting perforated shield consists of a matrix of metallic waveguides, and its shielding effectiveness depends on the size, the length and the number of waveguides. For the numerical computation a Yee´s (1966) finite difference algorithm with Mur´s (1981) absorbing boundary conditions is employed. A particular technique allows one to limit the spatial dimension of the simulating grid, suitably taking into account the external field source. The computed results show the effectiveness and the accuracy of the method
Keywords :
electromagnetic interference; electromagnetic shielding; electromagnetic wave absorption; electromagnetic wave diffraction; finite difference time-domain analysis; waveguide theory; EMI; absorbing boundary conditions; accuracy; diffracting perforated shields; external field source; finite difference time domain algorithm; honeycomb structures; metallic waveguides; numerical analysis; radiated energy; simulating grid; spatial dimension; Apertures; Attenuation; Conductors; Cutoff frequency; Diffraction; Electromagnetic waveguides; Electronic equipment; Geometry; Honeycomb structures; Numerical analysis;
Journal_Title :
Magnetics, IEEE Transactions on
