Antenna array construction on a mobile terminal chassis at 3.5 GHz for LTE advanced

This paper proposes a method of constructing an antenna array on the typical ground plane of the modern mobile terminal. An IFA and a slot in a metal frame antenna elements have been used to illustrate the proposed method. The radiation pattern of the element is recorded at the chosen number of the discrete locations on the ground plane. Antenna elements at the positions, where the boresight is similar and the maximum gain is high are combined into an array. The performance is verified by comparing performance of the one antenna element to the performance of the constructed arrays. The proposed method works both in free space and in data mode for two types of antenna elements. The method shown that a maximum gain of the constructed array is 1 to 2.5 dB higher then the gain of a single element both in free space and in data mode.

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