In this work the beam steering capability of pulsed frequency diverse arrays (pulsed FDAs) is analyzed and experimentally validated for the wireless energization of battery-less sensors randomly placed in a digitalized environment. The measurements, carried out for a 4-finger planar array operating at 1.9 GHz, show how it is possible to illuminate different regions of space “almost” simultaneously, by periodically selecting the a priori known raising time instants of the control pulses of the array excitations. The multi-sine generated signal is used as the input of a rectifying circuit, designed to face with the pulsed nature of the excitation. The simulated results demonstrate the feasibility of the envisaged powering system, where the outstanding reconfigurable capabilities of a pulsed FDA, as smart power source, guarantee RF-to-dc conversion efficiencies comparable to the standard continuous wave (CW) case.
Fazzini, E., Tiberi, T., Costanzo, A., Masotti, D. (2024). Enabling Multi-Spot Wireless Power Transmission via Pulsed FDA for Simultaneous Dislocated Charging. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, xx, 1-5 [10.1109/lawp.2024.3424222].
Enabling Multi-Spot Wireless Power Transmission via Pulsed FDA for Simultaneous Dislocated Charging
Fazzini, Enrico;Tiberi, Tommaso;Costanzo, Alessandra;Masotti, Diego
2024
Abstract
In this work the beam steering capability of pulsed frequency diverse arrays (pulsed FDAs) is analyzed and experimentally validated for the wireless energization of battery-less sensors randomly placed in a digitalized environment. The measurements, carried out for a 4-finger planar array operating at 1.9 GHz, show how it is possible to illuminate different regions of space “almost” simultaneously, by periodically selecting the a priori known raising time instants of the control pulses of the array excitations. The multi-sine generated signal is used as the input of a rectifying circuit, designed to face with the pulsed nature of the excitation. The simulated results demonstrate the feasibility of the envisaged powering system, where the outstanding reconfigurable capabilities of a pulsed FDA, as smart power source, guarantee RF-to-dc conversion efficiencies comparable to the standard continuous wave (CW) case.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
