Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Determine phase shift in quadrature signal using complex FFT and not two "real" FFTs.

Status
Not open for further replies.
T

Terminator3

Advanced Member level 3
Joined
Feb 25, 2012
Messages
802
Helped
71
Reputation
142
Reaction score
63
Trophy points
1,308
Activity points
9,027
Determine phase shift in quadrature signal using complex FFT and not two "real" FFTs.

Hello! I was able to do this such way:
"real" FFT of signal 1
"real " FFT of signal 2
do ATAN2 of each output and calculate difference.

It works okay, but i wonder can it be implemented using one FFT with complex imput? There are negative frequencies, but how i can do ATAN of complex-valued signal FFT output?

Thanks for reading!
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top