Patent ID: 7710240
Filing Date: 2010-05-04
Classification: G06K

Abstract:
1. A RFID device comprising: an antenna configured to transmit and receive a radio frequency signal to/from an external communication apparatus; an analog block including a voltage multiplier configured to generate a power voltage depending on the radio frequency signal received through the antenna; a digital block configured to receive the power voltage, process the radio frequency signal received through the antenna, and transmit a response signal to the analog block; and a memory including a plurality of memory cells, wherein each memory cell includes a first nonvolatile ferroelectric capacitor configured to store data, wherein the voltage multiplier comprises: a plurality of rectification units each configured to rectify the radio frequency signal applied through the antenna; a plurality of charge pumping units each configured to include a plurality of second nonvolatile ferroelectric capacitors and to charge-pump a voltage rectified in the plurality of rectification units using the second nonvolatile ferroelectric capacitors; and a stress prevention unit configured to prevent application of a voltage stress over a threshold voltage to the plurality of second nonvolatile ferroelectric capacitors wherein the stress is not due to an external physical stress.