Efficiency of focusing plane active phased arrays along the optical axis in the near field

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Authors: Anikin A. S., Krutikov M. V.

Annotation: The estimates of the power density of electromagnetic near-field for planar antenna array with a focused and collimated beam are described. A comparative analysis focused on antenna arrays has proved that focusing antenna array allows to reduce the signal power supplied to the elements of the antenna array from 20 dB to 45 dB.

Keywords: antenna array, focusing, collimated beam focusing efficiency, power density