Abstract
To realize near-field target localization and power transfer, an adaptively focusing antenna array is proposed. When a passive target is localized within the near-field zone of an array antenna, the optimal excitation distribution for focusing power onto the object can be obtained by solving an eigenvalue equation, which is established with the tested scattering parameters of the array antenna network. We randomly preset a number of targets with various shapes, materials and positions in the near-field zone, and the corresponding electric field focusing distribution is consistent with the preset target positions. Hence, the proposed near-field adaptively focusing array antenna can automatically focus its radiation onto any target, and such a feature can realize the target localization, tracking and power transfer in the near-field zone of the array antenna.
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