Using a diode as a detector, the design generally uses less than 10 components and no battery, getting its power to run from ... to the rest of a crystal radio circuit, and you’re all set.

Compared to the simple diode needed to demodulate AM radio signals, the detector circuits used for FM are ... for further experiments – perhaps using an Arduino to count the pulses?

A design of voltage doubler circuit has been studied in context of electromagnetic energy harvesting using 28 nm ... to support the power consumption by RF energy harvesting. For this it is necessary ...