An LSK demodulator for sub-scalp EEG recording

Zhao Chen, Jian Xu, Peng Sun, Zhi Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There is a growing demand of chronic, wireless neu-rosenor interface with on-the-fly processing capabilities. Such neu-rosensor interface is designed with low power, low noise operation, thus meeting the urgent clinical needs of providing long-term, neurological health monitoring for patients who suffer from conditions such as epilepsy, Alzheimer's disease, and sleep apnea. In this paper, we present an LSK data demodulator to decode sub-scalp EEG data for seizure detection and treatment. The demodulator consists of a multi-phase envelope detector that extracts the envelope of the power carrier and a 10-bit SAR ADC to digitalize the envelope waveform, which can work under a variety of modulation indexes and different coding/decoding protocols. The circuits are fabricated in a 0.18 μm CMOS process and can support a flexible power carrier frequency and data rate. When simulated with a 20 MHz power carrier, the achievable data rate is 2.5 Mbps at a total current consumption of 3.6 mA.

Original languageEnglish (US)
Title of host publication2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings
PublisherIEEE Computer Society
DOIs
StatePublished - Jan 1 2013
Event2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Singapore, Singapore
Duration: Dec 9 2013Dec 11 2013

Other

Other2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013
CountrySingapore
CitySingapore
Period12/9/1312/11/13

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