Comparison of log-periodic, dual-stacked log-periodic, and horn antenna on the field uniformity and power efficiency from 80 MHz to 1 GHz

A Comparison of 4 different types of antennas, - a biconical (dipole like-type) antenna, a single log periodic dipole antenna (LPDA), a dual-stacked log periodic antenna (dual-stacked LPDA, HL043E) and Extended-Double Ridge Guide (Ext-DRG) Horn antenna has been performed. The aims are to obtain an analysis of the homogeneity of the field as well as the required power, i.e, the efficiency. For all measurements the same test setup, according to IEC 61000-4-3 at 3 m distance, has been used. The result show that field uniformities from-Dual-stacked LPDA antenna and Ext-DRG Horn antenna are very good, comparable and much below the limit, while single LPDA has lower uniformity. Regarding to the forward power injected to the antennas, the Ext-DRG Horn antenna is the most efficient antenna compared to the other antennas.