I am working on an ASK modulator and de-modulator. The modulator works fine (thanks to great folks at SE). However when I try to pass the modulator output to the input terminal of the receiver, the output becomes 0 mostly due to the interference of components of receiver.
Below is the image showing simulation output when modulator is not connected to the receiver:
Green is the ASK output which looks good, red is the digital signal and blue is the carrier.
However when I connect the green output to the receiver (where antenna would be there in real scenario,) this output is generated:
Yellow is supposed to be demodulated output.
We can see that green is now 0. Please help me figure out a way so that I can test in simulation whether my demodulator is working or not.
As requested, pfb the circuit. It's built using multisim on a windows machine.