He’s using an everyday LED as a detector diode and an internal pull ... across the LED will start to discharge. If there is an RF signal present, the discharge voltage will be less than the ...

Compared to the simple diode needed to demodulate AM radio signals, the detector circuits used for ... pulse at a set point in the received FM signal’s waveform, usually at the zero-crossing ...

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Abstract— Today’s on-chip Analog/Mixed-Signal and RF (A/RF) systems have reached a limit of size and complexity where transistor-level SPICE and FastSPICE simulation approaches cannot deliver a ...