Near-field focusing using phased arrays with dynamic polarization control

Conference paper (2022)

Authors

N.J. Myers Team Nitin Myers - Mechanical, Maritime and Materials Engineering
Y. Aslan Microwave Sensing, Signals & Systems - EEMCS
G. Joseph Signal Processing Systems - EEMCS
Research Group
Team Nitin Myers (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2022 N.J. Myers, Y. Aslan, G. Joseph
Beamforming Focusing Near-field Dynamic polarization control
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Published Date

2022

Language

English

Reuse Rights

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Research Group

Team Nitin Myers

Abstract

Phased arrays in near-field communication allow the transmitter to focus wireless signals in a small region around the receiver. Proper focusing is achieved by carefully tuning the phase shifts and the polarization of the signals transmitted from the phased array. In this paper, we study the impact of polarization on near-field focusing and investigate the use of dynamic polar-ization control (DPC) phased arrays in this context. Our studies indicate that the optimal polarization configuration for near-field focusing varies spatially across the antenna array. Such a spatial variation motivates the need for DPC phased arrays which allow independent polarization control across different antennas. We show using simulations that DPC phased arrays in the near-field achieve a higher received signal-to-noise ratio than conventional switched- or dual-polarization phased arrays.