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21615 Discussions

Signal Phase Separation

Altera_Forum
Honored Contributor II
1,313 Views

Hi All 

 

I am working on a project with same frequency signals but different phases. I just wanted to know if anybody knows the method to separate these signals from each other? 

 

Let’s assume that we have the following signals 

 

S1=A1sin(wt+p1) 

S2=A2sin(wt+p2)  

W=2*pi*f which f is frequency  

And our signal is S=S1+S2 

 

Is there any way to extract and separate S1 and S2 from S? unfortunately both phases are unknown. However, we know the frequencies. 

 

Any comments and clues on above problem is much appreciated.
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Altera_Forum
Honored Contributor II
440 Views

 

--- Quote Start ---  

Hi All 

 

I am working on a project with same frequency signals but different phases. I just wanted to know if anybody knows the method to separate these signals from each other? 

 

Let’s assume that we have the following signals 

 

S1=A1sin(wt+p1) 

S2=A2sin(wt+p2)  

W=2*pi*f which f is frequency  

And our signal is S=S1+S2 

 

Is there any way to extract and separate S1 and S2 from S? unfortunately both phases are unknown. However, we know the frequencies. 

 

Any comments and clues on above problem is much appreciated. 

--- Quote End ---  

 

 

The sum of two sinusoids at same frequency is a sinusoid at same frequency. So I doubt there is anyway to recover original phases.  

In a comparative sense you may be able to measure phase of S such as IQ demodulator. keeping everything else constant then the change of S phase will change in relation to phase of S1,S2. But this is rather unrealistic application.
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Altera_Forum
Honored Contributor II
440 Views

thanks for response. yeah, that is pretty much what I thought. we will have to look other solutions to sort it out. thanks for your time again

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