Abstract
This work presents a clockless frequency-shift keying (FSK) receiver based on asynchronous architecture for epidermal electronics. The proposed architecture is free from system clock, adaptive to wide range of data rates and capable of duty-cycling. It makes use of continuous-time analog-to-digital converter (ADC) and signal processing techniques to improve the power efficiency. Implemented in 65-nm digital CMOS process, the simulation shows that the receiver works at the data rates ranging from 1.2-kbps to 100-kbps while consuming 120-μW to 1962-μW for a carrier frequency of 433.5-MHz.
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