DIFFRACTION OF HIGH-FREQUENCY ELECTROMAGNETIC-WAVES BY CURVED STRIPS

WOS: A1989U454400009

DIFFRACTION OF PLANE-WAVES BY A RESISTIVE STRIP RESIDING BETWEEN 2 IMPEDANCE HALF-PLANES

WOS: A1991GL20500001A uniform asymptotic solution is presented for the diffraction of E(z) polarized plane waves by a resistive strip residing between two impedance half-planes. The analysis proceeds from triple integral equations approach which leads to a system of uncoupled modified Wiener-Hopf equations (MWHE). This system is then reduced to two pairs of Fredholm integral equations of the second kind which are solved by successive approximations. Diffracted field expressions are derived up to the third order terms which include the surface wave field effects in a uniform manner

SECONDARY DIFFRACTION OF PLANE-WAVES BY AN IMPEDANCE STRIP

WOS: A1989AX64900005

DIFFRACTION OF PLANE-WAVES BY A RESISTIVE STRIP RESIDING BETWEEN 2 IMPEDANCE HALF-PLANES

A uniform asymptotic solution is presented for the diffraction of E(z) polarized plane waves by a resistive strip residing between two impedance half-planes. The analysis proceeds from triple integral equations approach which leads to a system of uncoupled modified Wiener-Hopf equations (MWHE). This system is then reduced to two pairs of Fredholm integral equations of the second kind which are solved by successive approximations. Diffracted field expressions are derived up to the third order terms which include the surface wave field effects in a uniform manner

DIFFRACTION OF AN OBLIQUELY INCIDENT PLANE-WAVE BY THE DISCONTINUITY OF A 2 PART THIN DIELECTRIC PLANE

WOS: A1989AB77500009

PLANE-WAVE DIFFRACTION BY THE DISCONTINUITY FORMED BY RESISTIVE AND IMPEDANCE HALF-PLANES - OBLIQUE-INCIDENCE CASE

WOS: A1990DV25600005

DIFFRACTION AT A DISCONTINUITY FORMED BY 2 ANISOTROPIC IMPEDANCE HALF PLANES

3RD ASIA-PACIFIC MICROWAVE CONF -- SEP, 1990 -- TOKYO, JAPANWOS: A1991FN86700051Diffraction by a two-part plane is an important topic in diffraction theory, and is relevant for many applications. Although various examples have been treated by several authors as contributions to this class of problems, a common characteristic of all these problems is that they were discontinuous only in one direction of the surface. The generalization of this type of a problem is to have an anisotropic boundary condition on each half-plane. Here we consider such a configuration where the half planes are conducting in one direction and having different impedances in the other direction. This boundary-value problem is formulated by Fourier transform technique which leads to a scalar Wiener-Hopf equation and is solved by standard techniques. Then asymptotic expressions for the diffracted fields are obtained by evaluating the field integrals asymptotically. These expressions reduce to the known results related to the reflection mechanisms only when Z1 = Z2 which correspond to the situation of full impedance plane.INST ELECTR INFORMAT & COMMUN ENGINEER

Plane wave diffraction by the discontinuity formed by resistive and impedance half-planes : oblique incidence case

The problem of plane wave diffraction from a plane discontinuity formed by impedance and resistive half-planes is considered for the oblique incidence case. This two-part mixed boundary value problem is formulated by a set of equivalent boundary conditions expressed in terms of normal components of the field and their normal derivatives. Thus the problem is reduced to a set of scalar Wiener-Hopf equations which are easily solved by standard techniques. Then, diffracted field expressions are derived asymptotically for k›?, and it is shown that they reduce to the known results related to the normal incidence case. © 1990 Springer-Verlag