公开(公告)号：US20120270515A1

公开(公告)日：2012-10-25

申请号：US13449644

申请日：2012-04-18

申请人： Michaël Quinsat ,  Marie-Claire Cyrille ,  Ursula Ebels ,  Jean-Philippe Michel

发明人： Michaël Quinsat ,  Marie-Claire Cyrille ,  Ursula Ebels ,  Jean-Philippe Michel

IPC分类号： H04B1/16

CPC分类号： H03B15/006 ,  H03B15/00 ,  H03D3/26

摘要： A demodulator of an FM signal modulated about a carrier frequency with a modulation frequency has an RF oscillator configured to be synchronized, under identical conditions of operation, with oscillations at first and second frequencies used in the FM signal to encode respective pieces of information. The oscillator has a magnetoresistive device; and a low-pass filter connected to an output electrode of the magnetoresistive device to filter an oscillating signal, generated by the oscillator and to a rendering terminal to provide, as a demodulated electrical signal, the filtered signal, the cut-off frequency fc at −3 dB of this filter being strictly lower than the frequency and higher than the modulation frequency.

摘要翻译： 调制频率调制后的FM信号的解调器具有RF振荡器，其被配置为在相同的操作条件下与在FM信号中使用的第一和第二频率上的振荡同步以编码相应的信息。 振荡器具有磁阻器件; 以及连接到磁阻装置的输出电极的低通滤波器，以对由振荡器产生的振荡信号和渲染终端进行滤波，以将解调后的电信号，滤波后的信号，截止频率fc提供给 该滤波器的-3 dB严格低于频率，高于调制频率。