This paper presents a novel capacitive-inductive structure implementing the channel for power and data transmission in a wireless power transfer system. The structure consists of two 24-mu H coil inductors, each surrounded with an open ring copper layer realized on a printed circuit board (PCB). The proposed channel structure allows simultaneous transmission of power and data: indeed power is transferred through the magnetic field generated by the coils, while data are modulated and transferred through the electric field produced by the capacitance determined by the copper rings and the parasitic capacitance of the two coils. The proposed structure was extensively studied and characterized both through simulations and measurements: compared to the state-of-the-art, in which metal plates placed below the coils are employed for implementing the capacitance used for data transmission, it shows a significant decrease in parasitic capacitance between the copper ring and the coil, thus reducing power disturbances on the data transmission.
A Novel Capacitive-Inductive Channel for Wireless Power and Data Transmission
Liotta, A;Moisello, E;Malcovati, P;Bonizzoni, E
2023-01-01
Abstract
This paper presents a novel capacitive-inductive structure implementing the channel for power and data transmission in a wireless power transfer system. The structure consists of two 24-mu H coil inductors, each surrounded with an open ring copper layer realized on a printed circuit board (PCB). The proposed channel structure allows simultaneous transmission of power and data: indeed power is transferred through the magnetic field generated by the coils, while data are modulated and transferred through the electric field produced by the capacitance determined by the copper rings and the parasitic capacitance of the two coils. The proposed structure was extensively studied and characterized both through simulations and measurements: compared to the state-of-the-art, in which metal plates placed below the coils are employed for implementing the capacitance used for data transmission, it shows a significant decrease in parasitic capacitance between the copper ring and the coil, thus reducing power disturbances on the data transmission.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
