A Design of ASK Demodulator for the Pseudo Random Sequence
In the fields of wireless bioelectronics implants and sensor network systems, amplitude shift keying （ASK） is one of the most commonly used methods to modulate the baseband signal. We present a novel approach to pseudo random sequence which consists of an ASK demodulator and a rectifier. A hysteresis comparator is used in the C-less（ without capacitor） ASK demodulator, the area of the chip is then reduced. The design has been implemented in an 0. 13μm CMOS process with VDD = 1.2V. Analytic results from simulation show that the proposed circuit can demodulate the pseudo random signal well.
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维普
