The regenerative receiver and the synchronous oscillator

The regenerative receiver [1] and the synchronous oscillator (SO) [2]-[4] have one common functional property, that is, their sensitivity is inversely proportional to the input signal level While the regenerative receiver operates in a threshold condition where noise is high, the stability and the selectivity are poor, the SO functions when stable oscillations are maintained and selectivity is good and the noise is low. Although the regenerative receiver is an AM-to-AM converter, the SO is an AM-to-PM converter.