Patent ID: 7609783
Filing Date: 2009-10-27
Classification: H04L

Abstract:
1. An Amplitude Shift Keying (ASK) demodulation circuit based on a self sample as a basis application in an organism implantation microsystem, comprising: a pulse shaper provided with a Schmitt trigger that generates a pair of sharpening clock-pulse signal required for the operation of a subsequent self-sampler; a voltage scaler that reversely raises an inputted modulation signal, in which the signal levels are higher than a lowest reference level (GND), and separates the variation among different sets of amplitude modulation in the modulation signal for a next stage of advanced processing; a level contrastor that further separates a signal outputted by the voltage scaler; and a self-sampler that samples the output of level contrastor by the clock-pulse signal generated from the pulse shaper, in which the sampled result is a demodulation output.