特定频率正弦波的提取

望而不见

频率相近的正弦波和方波交叠到了一起，如图所示，想根据图中波形还原正弦波的频率，最终得到正弦波频率的方波，过路的各位大神方便的话指教一下思路，感谢！！！

peterlin2010

A method for parameter extraction of analog sine-wave signals for mixed-signal built-in-self-test applications

• March 2004
  

DOI:10.1109/DATE.2004.1268864

• Source
• IEEE Xplore
  

=> who can upload this paper ?

peterlin2010

more  edabord

https://www.edaboard.com/threads ... -extraction.319214/

analog filter ?

望而不见

peterlin2010 发表于 2021-9-15 22:23
more  edabord

https://www.edaboard.com/threads/pure-sine-wave-extraction.319214/

Thank you for your help ! I'm a little confused about which kind of analog filter I should choose for this application. Can you please provide more details ?

望而不见

peterlin2010 发表于 2021-9-15 22:21
A method for parameter extraction of analog sine-wave signals for mixed-signal built-in-self-test ap ...

Thanks a lot ! I'm wondering if the paper you uploaded can be applied to the situation described in the picture, which shows the sine wave and square wave superimposed together. It seems like that the knowledge of your paper is only suitable for pure sine wave or pure square wave.