METHOD FOR CONTROLLING THE POWER LEVEL ISSUED BY A CONTACTLESS COMMUNICATION DEVICE, FOR EXAMPLE A READER, AND CONTACTLESS COMMUNICATION DEVICE THEREFOR

摘要

Non-contact communication device, comprising an antenna (ANT2), control means (2, D1, D2) having a power supply terminal (20) for receiving a supply voltage (Vext) and configured to deliver a current to a destination of the antenna, and means (MCTRL) for controlling the power emitted by said antenna configured to, in the presence of a request to reduce a current level of transmitted power, reduce the supply voltage (Vext) of the control means up to a target value corresponding to a new level of said transmitted power lower than said current level.