Development of a Log-Periodic antenna system

Abstract

A 14-element log-periodic dipole antenna for VHF, UHF and SHF bands has been designed, constructed and characterized at a frequency band (300-5467)MHz. The experimentally measured values agree with the computed values with a standard deviation of 2.6. A gain of 20.33 ± 0.69 dB was achieved at a signal-to-noise ratio of 104.77 ± 1.04dB. The efficiency at frequencies above 500MHz is 97% and drops to 65% at frequencies below 200MHz.

Keywords: Dipole antenna, radio communication and space loss

Nigerian Journal of Physics Vol. 18 (1) 2006: pp. 81-90