Title :
Improvement in radiation characteristics of coaxial feeds using a quarter-wavelength choke
Author :
Kishk, A.A. ; Shafai, L. ; Ittipiboon, A.
Author_Institution :
University of Manitoba, Department of Electrical Engineering, Winnipeg, Canada
Abstract :
The radiation field of a coaxial waveguide having a quarter-wavelength choke is determined numerically. It is shown that, similarly to the case of a circular waveguide, the introduction of the choke lowers both the side and back radiation and improves its crosspolarisation and the gain factor.
Keywords :
antenna feeders; waveguide components; antenna feeds; coaxial waveguide; crosspolarisation; gain factor improvement; quarter-wavelength choke; radiation characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840362
