Title :
Approach to a suitable directional antenna for UHF radio positioning applications
Author :
Tranquilla, J.M. ; Best, Steven R.
Author_Institution :
Dept. of Elec. Eng., New Brunswick Univ., Fredericton, NB, Canada
fDate :
7/1/1987 12:00:00 AM
Abstract :
The phase centre properties of log-periodic dipole (LPD) arrays are examined for suitability in UHF radio positioning systems and are compared with phase properties of commonly used Yagi arrays. LPD arrays offer gain nearly comparable to that obtained from short Yagis, exhibit nearly 180° main lobe coverage with no front quadrant nulls and show very small phase centre movement over the entire front hemisphere.
Keywords :
antenna arrays; dipole antennas; directive antennas; radionavigation; UHF radio positioning systems; Yagi arrays; directional antenna; front hemisphere; front quadrant nulls; log-periodic dipole arrays; main lobe coverage; phase centre movement; phase centre properties; Antenna measurements; Antenna radiation patterns; Mathematical model; Phased arrays;
Journal_Title :
Electrical Engineering Journal, Canadian
DOI :
10.1109/CEEJ.1987.6593830
