ANTENNA-GAIN MEASUREMENT OF HAND-HELD TERMINALS AT 900 MHZ

This paper presents antenna-gain measurements of handheld terminals by the random-field measurement (RFM) method. We have measured the relat ive antenna gain for different-sized terminal boxes in indoor and outd oor environments to show a gain decrease caused by the box size. The m easured results are explained by calculating the average gain of the h orizontal radiation pattern. To find the effect by a different human c arrier, we also measured the antenna gain for several parameters, such gs weight, height, head parameters, and the antenna protruding length from the head. We present a correlation factor of the antenna-gain de viation due to different human carriers.