Title :
Radiation characteristics of coaxial waveguides as a small primary feed
Author :
Shafai, L. ; Kishk, Ahmed A. ; Ittipiboon, A.
Author_Institution :
University of Manitoba, Department of Electrical Engineering, Winnipeg, Canada
Abstract :
The radiation patterns of coaxial waveguides with a TE11 exciting mode are computed numerically. It is shown that by a proper selection of the coaxial aperture dimensions the symmetry of the copolar patterns can be improved considerably. Coaxial radiators can therefore be designed as a useful small primary feed for paraboloid reflector antennas.
Keywords :
antenna feeders; antenna radiation patterns; waveguide theory; waveguides; TE11 exciting mode; aperture dimensions; coaxial waveguides; copolar pattern symmetry; paraboloid reflector antennas; primary feed; radiation patterns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830425
