Abstract
Electromagnetic scattering by a right-angled lossy dielectric wedge at normal incidence is considered in detail. The lossy dielectric material of the wedge is simulated using second-order impedance boundary conditions on its faces. The Maliuzhinets method is employed to obtain the total exterior field. A high-frequency asymptotic approximation of the Sommerfeld integral is carried out to obtain a UTD expression for the total field. The predictions are validated against experimental measurements taken in a controlled laboratory environment. A comparison with the widely used heuristic UTD diffraction coefficient of Luebbers is presented and the validity of the latter coefficient is discussed.
Original language | English |
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Pages (from-to) | 392-396 |
Number of pages | 5 |
Journal | IEE Proceedings - Microwaves, Antennas & Propagation |
Volume | 144 |
Issue number | 5 |
Publication status | Published - 1 Jan 1997 |