True-ExG Biopotential Acquisition Systems
- Title
- True-ExG Biopotential Acquisition Systems
- Author(s)
- Sehwan Lee
- DGIST Authors
- Sehwan Lee ; Junghyup Lee ; Jaeha Kung
- Advisor
- 이정협
- Co-Advisor(s)
- Jaeha Kung
- Issued Date
- 2022
- Awarded Date
- 2022/02
- Type
- Thesis
- Description
- ADC-based true-ExG biopotential acquisition systems, multichannel recording system, parasitic-insensitive impedance boosting scheme, frequency-controlled differential regulator
- Table Of Contents
-
Ⅰ. Introduction 1
1.1 Motivation 1
1.2 Characteristics of Biopotential 3
1.3 Design Considerations 4
1.3.1 Stimulation and Motion Artifacts 4
1.3.2 Electrode DC Offset Voltage 5
1.3.3 Large Common-Mode Interference 6
1.4 Design Requirements of Recording Systems 7
1.5 Overview of the Thesis 9
Ⅱ. Conventional Biopotential Recording Systems 10
2.1 Low Noise Amplifier and Moderate-Resolution ADC 10
2.2 ADC Direct Recording Front-End 12
2.2.1 DC Coupled CTDSM 13
2.2.2 AC Coupled CTDSM 14
2.2.3 AC Coupled DPCM 15
2.2.4 Summary 16
Ⅲ. True ExG Biopotential Acquisition Systems 17
3.1 Background 17
3.1.1 Delta Sigma Modulator 17
3.1.2 VCO-Based Quantizer 19
3.2 Overall Architecture 20
3.3 FIR DAC 25
3.3.1 Aliasing of Quantization Noise 25
3.3.2 Multi-bit DAC 28
3.4 Parasitic-Insensitive Impedance Boosting 30
3.5 Details of Sub-Blocks 34
3.5.1 Design of a Linear Transconductance Amplifier 34
3.5.2 Design of a VCO Quantizer 38
3.6 Measurement Results 41
3.7 Conclusion 46
Ⅳ. Multichannel Neural Recording Systems 47
4.1 Background 47
4.2 Differentially Regulated Rejection Ratio Enhancement Scheme 49
4.3 Overall Architecture 53
4.4 Measurement Results 59
4.5 Summary 63
Ⅴ. Conclusion and Future Work 64
- URI
-
http://dgist.dcollection.net/common/orgView/200000595443
http://hdl.handle.net/20.500.11750/16345
- Degree
- Doctor
- Department
- Information and Communication Engineering
- Publisher
- DGIST
- Related Researcher
-
-
Lee, Junghyup
- Research Interests Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
-
- Files in This Item:
-
There are no files associated with this item.
- Appears in Collections:
- Department of Electrical Engineering and Computer Science Theses Ph.D.
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