Patent ID: 8094024
Filing Date: 2012-01-10
Classification: H03D

Abstract:
1. An amplitude shift keying demodulator adapted to demodulate an alternating current input signal and generate a demodulated envelope signal, the amplitude shift keying demodulator comprising: a signal input terminal group comprising a first input terminal and a second input terminal, the signal input terminal group adapted to receive the alternating current input signal; an input rectifier circuit comprising: a current mirror circuit electrically coupled to the input rectifier circuit and adapted to generate a mirror current according to an input current from the input rectifier circuit; an output stage electrically coupled to the current mirror circuit to receive the mirror current and adapted to generate an output current according to the mirror current; and a low pass filter electrically coupled to the output stage to receive the output current and adapted to perform a low pass filtering operation applied to the output current to generate the demodulated envelope signal.