Carrier signal extraction using Amplitude Demodulation using Python

Question

I get an IF signal from microwave circuit which looks like this:

As we can see there is a distinct unwanted Amplitude Modulation which is believed to be due to coupling between antennae. This signal will also have a FM modulation.

I want to remove this AM modulation so that only FM modulation remains. I want the carrier signal NOT the AM modulation. Something like how a Automated Gain Control (AGC) would work.

Answer 1

I tried to filter the lower freqs but that dose not removes the AM modulation.

Well, then you need to adjust your filter. Every kind of AGC is but a high pass filter in effect.

I want to remove this AM modulation so that only FM modulation remains.

Seriously, don't do that. FM demodulation doesn't need constant envelope. As a FM demodulator doesn't care the least about amplitude, it will not care about what you consider to be AM.

EDIT I though you'd probably already tried, but what about the AGC, AGC2 and AGC3 block in GNU Radio?