> 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

> 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-defined-radio-are-your-nemesis-read-on/ https://hackaday.com/2017/05/16/if-the-i-and-q-of-software-d...