To understand how an FM receiver works, it's helpful to know a bit about how FM signals are generated. With FM, the instantaneous frequency of the transmitted waveform is varied as a function of the ...

The Si4720 internal block diagram, from its data sheet. A look at the block diagram from the Si4720 reveals why it and its siblings are such intriguing devices.

Amplitude-locking snatches tiny FM signals from atmospheric swampSteve Bush Radio broadcasting using FM has advantages. Firstly, FM is almost as easy to demodulate as AM, so receivers can besimple.