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PIER PIER B PIER C PIER M PIER Letters
2013-02-13
Reduce the Hand-Effect Body Loss for LTE Mobile Antenna in Ctia Talking and Data Modes
By
Kun Zhao,

    Dr. Kun Zhao

    Department of Electromagnetic Engineering

    School of Electrical Engineering, KTH-Royal Institute of Technology

    Sweden

    Homepage

Shuai Zhang,

    Dr. Shuai Zhang

    Department of Electromagnetic Engineering

    Royal Institute of Technology

    Sweden

    Homepage

Zhinong Ying,

    Dr. Zhinong Ying

    Sony Ericsson Mobile Communications AB

    Sweden

    Homepage

Thomas Bolin,

    Dr. Thomas Bolin

    Research and Technology, Corporate Technology Office

    Sony Mobile Communications AB

    Sweden

    Homepage

Sailing He

    Prof. Sailing He

    Department of Electromagnetic Theory

    Royal Institute of Technology

    Sweden

    Homepage

Progress In Electromagnetics Research, Vol. 137, 73-85, 2013
doi:10.2528/PIER13013007
Abstract
The reduction in the radiation efficiency of an antenna in a mobile handset due to user's hand effects in the talking and data modes is studied. A parameter called "body loss" is defined to evaluate the degradation of the radiation efficiency. A C-fed on-ground (OG) PIFA antenna, which can cover two typical LTE bands of 0.75 GHz-0.96 GHz and 1.7 GHz-2.1 GHz, is used to study the property of the hand-effect body loss in two CITA test positions: the talking and data modes. Three different 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 phantom is recommended for minimal body loss. A new modified design with a smaller antenna width is proposed to reduce the hand-effect body loss in the talking and data modes.
Citation
Kun Zhao, Shuai Zhang, Zhinong Ying, Thomas Bolin, and Sailing He, "Reduce the Hand-Effect Body Loss for LTE Mobile Antenna in Ctia Talking and Data Modes," Progress In Electromagnetics Research, Vol. 137, 73-85, 2013.
doi:10.2528/PIER13013007
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