Comment Comment by duckfang > In my opinion, the truly beautiful concept involved here is Euler's formula:> e^(ix) = cos x + i sin x.And that right there, is the mathematical basis for a quadrature mixer... And all of software defined radios.https://hackaday.com/2017/05/16/if-the-i-and-q-of-software-d... parent duckfang 5 years ago
> e^(ix) = cos x + i sin x.
And that right there, is the mathematical basis for a quadrature mixer... And all of software defined radios.
https://hackaday.com/2017/05/16/if-the-i-and-q-of-software-d...