User´s Impact on PIFA Antennas in Mobile Phones

Thanks to a recent grip study, CAD models of the human hand have been generated, investigating user´s impact on PIFA antennas in mobile phones. The simulation results show that the hand and especially the index finger exhibit a major contribution in determining the total loss when compared to the upper torso alone, while the influence of the position of the fingers on the handset is found to be more important when close to the antenna. The palm-handset gap and the index finger location are the main responsible for both absorption and mismatch loss.