Scattering cross section of composite conducting and lossy dielectric bodies
Article Abstract:
An integral equation is developed for the computation of the electromagnetic scattering from a finite, arbitrarily-shaped object consisting of both composite conducting and inhomogeneous, lossy, dielectric components. The equivalent volume polarization current is derived for the dielectric bodies, while the equivalent surface electric current is derived for the conducting bodies. The solution for the electric current for the entire object is solved by an integral-differential equation for the boundary conditions. The method of moments converts the equation to a symmetric matrix equation, with an augmented conjugate gradient method used to solve the matrix equation. Details of the development, underlying equations, and application of the scattering analysis technique are described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
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RCS analysis and reduction for lossy dihedral corner reflectors
Article Abstract:
A methodology based on the uniform geometrical theory of diffraction (UTD) for impedance surfaces is used to compute the radar cross-sections (RCSs) of lossy dihedral corner reflectors through analysis of the electromagnetic scattering from such objects. Dihedral corner reflectors exhibit many of the scattering characteristics of more complex objects, including three types of diffracting wedges and highly dominant higher order reflections and diffractions. The new UTD method is based on the derived diffraction coefficients for the interior impedance wedge. The method also isolates the individual scattering mechanisms of dihedral corner reflectors. Details of the development, underlying equations, and functioning of the methodology are described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
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Time-domain response of multiconductor transmission lines
Article Abstract:
The evaluation of time-domain response of multiconductor transmission lines is critical in analyzing power lines and the crosstalk in fast digital circuits. There are several methods for computing line response from known circuit-theory parameters. They include time stepping solution of the telegrapher equations, modal analysis in the frequency domain, and a convolution technique using line Green's functions. These techniques and their numerical and experimental results are presented.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1987
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