The same antennas exploiting their far-field behavior for communication purposes, can be suitably configured for realizing wireless power transfer via their near-field properties. In this paper we theoretically and numerically study the behavior of a pair of closely coupled transmitting and receiving antennas, originally designed for far-field communication. They realize a two–port reactive network to be arranged in a resonant link configuration for wireless power transfer. By appropriately selecting matching network and load values it is possible to obtain the coexistence of these two antenna operation modes. A proof of concept is discussed in this paper by designing a printed dipole antenna, combined with its matching networks, to operate at 13.56 MHz in the near-field and at 868 MHz in the far-field.
Antenna design for unified far-field communication and near-field recharging / Berra, F.; Costanzo, A.; Dionigi, M.; Masotti, D.; Mastri, F.; Mongiardo, M.; Sorrentino, R.. - ELETTRONICO. - (2015), pp. 7228737.1-7228737.2. (Intervento presentato al convegno 9th European Conference on Antennas and Propagation (EuCAP) tenutosi a Lisbona nel 13-17 April 2015).
Antenna design for unified far-field communication and near-field recharging
BERRA, FRANCESCO;COSTANZO, ALESSANDRA;MASOTTI, DIEGO;MASTRI, FRANCO;
2015
Abstract
The same antennas exploiting their far-field behavior for communication purposes, can be suitably configured for realizing wireless power transfer via their near-field properties. In this paper we theoretically and numerically study the behavior of a pair of closely coupled transmitting and receiving antennas, originally designed for far-field communication. They realize a two–port reactive network to be arranged in a resonant link configuration for wireless power transfer. By appropriately selecting matching network and load values it is possible to obtain the coexistence of these two antenna operation modes. A proof of concept is discussed in this paper by designing a printed dipole antenna, combined with its matching networks, to operate at 13.56 MHz in the near-field and at 868 MHz in the far-field.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
