公开(公告)号：US20040104809A1

公开(公告)日：2004-06-03

申请号：US10712325

申请日：2003-11-12

Applicant: STMicroelectronics S.A.

Inventor： Pierre Rizzo ,  Jerome Conraux

IPC: H04Q005/22

CPC classification number: G06K19/0723

Abstract: An electromagnetic transponder intended to draw the power necessary to its operation of from a field radiated by a terminal of transmission of a carrier at a first supply frequency and to back-modulate the received signal at the rate of a sub-carrier at a second frequency lower than the first one, and comprising means capable of demodulating and decoding signals modulated by said sub-carrier, as well as a system of communication between such transponders.

Abstract translation: 一种电磁转发器，用于从第一电源频率的载波发射终端辐射的场中获取其工作所需的功率，并以第二频率以副载波的速率对接收信号进行后向调制 低于第一个，并且包括能够解调和解码由所述子载波调制的信号的装置以及这种应答器之间的通信系统。