专利名称：Digital FM demodulator
发明人：Allpress, Stephen A.,Blake, Roy Baxter申请号：EP97302045.6申请日：19970325公开号：EP0800266B1公开日：20050511
摘要：In a preferred embodiment, an FM demodulator (10) includes an I and Qsampler (12) for generating data samples of I and Q signals (on 13, 14) of an FM signal(on 15). A signal processor (15) derives samples of a modulating waveform of the FMsignal from the I and Q data samples, using a Lagrangian interpolation function of the Iand Q data samples. Variables include derivatives of the I and Q signals obtained bydifferentiation of the Lagrangian function. Preferably, the processor further utilizes acorrection factor to correct the modulating waveform samples obtained from theLagrangian-based interpolation, to thereby derive a modulating waveform exhibiting lowsignal distortion.
申请人：LUCENT TECHNOLOGIES INC
地址：US
国籍：US
代理机构：Williams, David John
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容