Measured variation in performance of handheld antennas for a large number of test persons

Abstract

This work investigates the variation in the mean effective gain (MEG) for a large number of test persons in order to find how much the difference in anatomy and persons who wear glasses, etc., changes the MEG (i.e., the received signal power with respect to a reference). The evaluation was carried out in a typical GSM-1800 urban micro cell with the base station located outdoor approximately 700 m from the mobile. The mobile was located in office like environments. Peak variations in the MEG among different persons of more than 10 dB were found and the difference between "no person present" and a person present is on the average 3 dB for a directive patch antenna, 6 dB for a whip antenna and 10 dB for a helical antenna.