Microwave diffraction by a conducting object for various shapes*
Abstract
Plane conducting screens having rotational symmetries about their axes are used to study microwave diffraction. Sample shapes evaluated include rectangles (twofold symmetry), triangles (threefold symmetry), squares, crosses, and cuspate figures (fourfold symmetry). Intensity measurements are taken along the objects' axes on the shadow side with the electric dipole probe parallel to the incident electric field. It is found that for objects of at least threefold symmetry, the observed intensities are independent of the object's orientation about its axis. For an object of twofold symmetry the intensity is dependent on orientation. It is suggested that this generalization may be useful for scattering objects of the order of a wavelength in dimensions. A model is presented to explain the independence of intensity on the rotation of the screens of objects having all types of symmetry.
 Publication:

Journal of the Optical Society of America (19171983)
 Pub Date:
 November 1977
 DOI:
 10.1364/JOSA.67.001566
 Bibcode:
 1977JOSA...67.1566C
 Keywords:

 Electric Conductors;
 Microwave Scattering;
 Wave Diffraction;
 Attitude (Inclination);
 Electric Dipoles;
 Electric Fields;
 Shapes;
 Symmetry;
 Communications and Radar