I have the following wave:
I know that it is demodulated by an envelope detector whose source resistance is 0Ohm and its load resistance is 250Ohm. Now, I need to calculate a C capacitor in order that distortion is negligible for frequencies up to and inlcuding the eleventh harmonic. I know, that in order to have a decent envelope detector I must satisfy the following condition: 1/f_carrier <<< R_load*C <<< 1/W, being W the message bandwidth.
The problem I'm facing, is that I cannot find the W value and thus, I cannot find the value of the capacitor.