Accession Number : ADP004624

Title :   Approach to a Suitable Directional Antenna for UHF Radio Positioning Applications,

Corporate Author : NEW BRUNSWICK UNIV FREDERICTON DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Tranquilla,J. M. ; Best,S. R.

Report Date : JAN 1985

Pagination or Media Count : 23

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 deg. main lobe coverage with no front quadrant nulls, and show very small phase centre movement over the entire front hemisphere. (Author)

Descriptors :   *DIRECTIONAL ANTENNAS, *LOG PERIODIC ANTENNAS, *DIPOLE ANTENNAS, *POSITION FINDING, RADIO EQUIPMENT, ANTENNA ARRAYS, YAGI ANTENNAS, GAIN

Distribution Statement : APPROVED FOR PUBLIC RELEASE