Method for calibrating electronic radio frequency identification reader in automobile, involves correcting transmission power of signal by proportionality coefficient when difference between control and measures values is changed

摘要

The method involves placing an electric coil (4) adjacent to a transmitting antenna (2). Transmission of an electromagnetic signal is controlled by an electronic radio frequency identification (RFID) reader (10). A value representative of voltage across an electric coil is measured during emission of an electromagnetic signal. Transmission power of the electromagnetic signal is corrected by proportionality coefficient when a difference between a control value and the measured values is changed according to power of the antenna. An independent claim is also included for a RFID reader.