Title :
Helical feeds at millimetre wavelengths
Author :
Cowles, P.R. ; Parker, Edward A.
Author_Institution :
University of Kent at Canterbury, Electronics Laboratories, Canterbury, UK
Abstract :
The properties of helical aerials have been investigated between 26.5 GHz and 40 GHz. Beamwidths and polarisations are given as functions of helix parameters and frequency. With a suitable choice of dimensions, helixes can be used successfully as broadband feeds for parabolic reflectors and lenses at millimetre wavelengths.
Keywords :
antenna feeders; microwave antennas; 26.5 to 40 GHz; UHF; antenna feeders; broadband feeds; halfwave dipoles; microwave antennas; parabolic reflectors; radio astronomy; waveguide horns;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710348
