Reduce the Hand-Effect Body Loss for Lte Mobile Antenna in Ctia Talking and Data Modes

The reduction in the radiation e-ciency of an antenna in a mobile handset due to user's hand efiects in the talking and data modes is studied. A parameter called \body loss" is deflned to evaluate the degradation of the radiation e-ciency. A C-fed on-ground (OG) PIFA antenna, which can cover two typical LTE bands of 0.75GHz{ 0.96GHz and 1.7GHz{2.1GHz, is used to study the property of the hand-efiect body loss in two CITA test positions: the talking and data modes. Three difierent positions of the proposed antenna in the talking mode are compared, and the position with the antenna located on the bottom of the mobile handset and facing the head is recommended for minimal body loss. A modifled design with a smaller antenna width is proposed to reduce further the hand-efiect body loss in the talking and data modes.

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