Compared to the simple diode needed to demodulate AM radio signals, the detector circuits used for FM are ... videos talking about the mysteries of RF modulation; SSB, anyone?

Next he referenced a proven design and built the diode detector circuit on a piece of protoboard ... from a keypress on a computer keyboard, RF data communications, and slew of other noise ...

A design of voltage doubler circuit has been studied in context ... Therefore, it is possible to support the power consumption by RF energy harvesting. For this it is necessary to use a non-linear ...