We present a new Resonant Wireless Power Transfer system based on a geometrically optimized coil and a double immittance inverter design. The receiver Tee immittance inverter is obtained by a coil identical to the receiver one, but orthogonally placed, whereas a discrete inductor is deployed on the transmitter side. The reference link consists of the receiving coil (implanted in bio-tissue/blood) and the external conformal transmitting coil at a distance of 50mm (20mm in blood, 30mm in free-space): the overall link design focuses on transmitting coil optimization for maximum coupling factor. The simulated link efficiency at 6.78 MHz reaches the promising value of 14.4%, with a load of 55 Ohm. The influence of coils copper thickness is also investigated: the replacement of the standard 35 μm-thick copper with a 0.5 mm-thick one allows to achieve a more than twice efficiency of 34%.
Pacini, A., Berra, F., Costanzo, A., Mastri, F., Masotti, D. (2016). NEAR-FIELD WPT TO LOOSELY-COUPLED SMALL IMPLANTS.
NEAR-FIELD WPT TO LOOSELY-COUPLED SMALL IMPLANTS
PACINI, ALEX;BERRA, FRANCESCO;COSTANZO, ALESSANDRA;MASTRI, FRANCO;MASOTTI, DIEGO
2016
Abstract
We present a new Resonant Wireless Power Transfer system based on a geometrically optimized coil and a double immittance inverter design. The receiver Tee immittance inverter is obtained by a coil identical to the receiver one, but orthogonally placed, whereas a discrete inductor is deployed on the transmitter side. The reference link consists of the receiving coil (implanted in bio-tissue/blood) and the external conformal transmitting coil at a distance of 50mm (20mm in blood, 30mm in free-space): the overall link design focuses on transmitting coil optimization for maximum coupling factor. The simulated link efficiency at 6.78 MHz reaches the promising value of 14.4%, with a load of 55 Ohm. The influence of coils copper thickness is also investigated: the replacement of the standard 35 μm-thick copper with a 0.5 mm-thick one allows to achieve a more than twice efficiency of 34%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
