# AM modulation bandpass filter?

I'm trying to do an AM modulation using band pass filter at the output the carrier is at 600 kHz and the message signal is at 1.5 kHz. To get a 100% modulation I did some calculations to get fL=598.5 kHz which I think is the LSB frequency and fH= 601.5 kHz the USB. My questions are:

1. 1- Are the calculated values of fL and fH correct?
2. Given that Vm=10 Vp-p and Vc= 5 Vp-p, what is the modulated AM signal output Vp-p should be?
3. In this circuit I think the modulation is slightly below 100%, what do I need to do to make it at 100%?
4. The message signal doesn't seem to be synchronized with the AM signal how can I correct that.
5. In the second circuit I used a parallel LC band pass filter which gives a 100% modulation but the output voltage is in micro volts, how can I amplify the output voltage without effecting the modulation if it does?

• 1. Consider the losses in your filter and impedance. Commented Aug 20, 2017 at 21:51
• And the phase shift. Commented Aug 21, 2017 at 3:27