Patent ID: 7873339

Claim:
A test method for determining total isotropic sensitivity (TIS) of a mobile wireless communications device using a radio frequency (RF) source controllable to a plurality of source values having a relatively small uncertainty associated therewith, the mobile wireless communications device comprising an antenna, a radio frequency (RF) receiver coupled to the antenna and outputting a received signal strength indicator (RSSI) value having a relatively large uncertainty associated therewith, the method comprising: measuring a sensitivity of the RF receiver; measuring an antenna gain pattern for the antenna based upon controlling the RF source to respective source values causing the RF receiver to generate a same target RSSI value as the RF source and wireless communications device are angularly moved relative to one another to thereby reduce the relatively large uncertainty of the RSSI value; and determining the TIS of the mobile wireless communications device based upon the measured sensitivity of the RF receiver and the measured antenna gain pattern.