Modified "three antennas method" for determining the antenna factor (AF)

This paper addresses the adequacy of the measurement methodology of "three antennas method" of ANSI Standard C63.5. This method requires installing at least one of the three antennas under test, on two different heights i.e. transmission and receiving positions. Although it presents a unique AF for each antenna at its receiving or transmitting position. We propose here a modified method to evaluate the AF of all the three antennas on their two different heights i.e. transmission and receiving positions, in a series of six measurements