Title :
Comparison of the direct edge diffracted field with the contribution of the whispering gallery modes in a spherical reflector
Author :
Erdogan, R. ; Erdogan, E.
Author_Institution :
Fac. of Electr. & Electron. Eng., Istanbul Tech. Univ., Turkey
Abstract :
The influence of edge-diffracted direct rays and edge-diffracted whispering gallery modes (WGM) on the radiation pattern of a spherical reflector is studied. The incident field which illuminates the reflector is assumed to be created by a ring source located at the center of the sphere and carrying a constant electric current. After delivering the field component contributions related to the diffraction of the incident wave as well as the WGM excited by an earlier diffraction, numerical results comparing the two components are given.<>
Keywords :
antenna radiation patterns; antenna reflectors; reflector antennas; direct edge diffracted field; electric current; field component contributions; incident wave; radiation pattern; ring source; spherical reflector; whispering gallery modes; Antenna radiation patterns; Antenna theory; Attenuation; Diffraction; Frequency; Geometry; Microwave antennas; Microwave theory and techniques; Reflector antennas; Whispering gallery modes;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94007
