04-20-2018 05:45 AM
I am trying to implement a FFT magnitude estimation system. I am using a DDS compiler which outputs a sine wave into the FFT block. After the FFT the regular formula : Mag= sqrt( Re^2 + Im^2) is added. Basically what I want to achieve is to detect is if the output of the FFT is over a certain magnitude. I don't really understand the FFT output or what I am doing wrong.
Should I not be getting a single spike where the inputted sine wave of 10MHz is added?
What am I missing here?
Thank you in advance!
04-24-2018 08:53 AM