Title :
Edge diffraction at a curved screen
Author_Institution :
Queen Mary College, Department of Electrical & Electronic Engineering, London, UK
Abstract :
An edge-diffraction formulation is given for an astigmatic electromagnetic wave incident on a screen with a curved surface and a curved edge. The result is used to calculate the near field of a paraboloidal reflector under plane-wave illumination, and this is compared with the physical-optics method. An edge-type term valid along the axial caustic is given.
Keywords :
antenna theory; electromagnetic wave diffraction; reflector antennas; antenna theory; curved screen; edge diffraction; electromagnetic wave diffraction; reflector antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19740127
