Stmicroelectronics international n.v. (20250105875). CONTACTLESS COMMUNICATION DEVICE BY ACTIVE LOAD MODULATION
CONTACTLESS COMMUNICATION DEVICE BY ACTIVE LOAD MODULATION
Organization Name
stmicroelectronics international n.v.
Inventor(s)
Sylvain Majcherczak of St. Pierre D'Allevard FR
Florent Sibille of Grenoble FR
CONTACTLESS COMMUNICATION DEVICE BY ACTIVE LOAD MODULATION
This abstract first appeared for US patent application 20250105875 titled 'CONTACTLESS COMMUNICATION DEVICE BY ACTIVE LOAD MODULATION
Original Abstract Submitted
a device of contactless communication by active load modulation includes a receive circuit configured to receive as an input a reception signal originating from an electromagnetic field intended to be received by an antenna and to deliver as an output a first clock signal. a transmit circuit includes an output coupled to the antenna and operates to deliver on its output a modulation signal in phase with the reception signal. a compensation circuit is configured to compensate for a first delay of the first clock signal due to the receive circuit and to the amplitude of the reception signal. the compensation circuit operates to determine a phase-shift value to be applied to an input signal of the transmit circuit to compensate for the first delay.