refer to schematic of ltspice. Can anybody add a circuit to the output of the demodulator to recover the original modulating signal of the first multiplier?
There is available a digital to analog converter ad5671r in lt spice which perhaps could be used.
I have no problems with a 1000hz modulating frequency and 10khz carrier wave sine waves. A simple passive low pass filter at the output of the demodulator recovers the 1000hz signal.
A digital carrier wave and modulating input is a different matter. A passive low pass filter does not work.
There is available a digital to analog converter ad5671r in lt spice which perhaps could be used.
I have no problems with a 1000hz modulating frequency and 10khz carrier wave sine waves. A simple passive low pass filter at the output of the demodulator recovers the 1000hz signal.
A digital carrier wave and modulating input is a different matter. A passive low pass filter does not work.
Attachments
-
2 KB Views: 4