2013 Springer-Wireless Cortical Implantable Systems

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Wireless Cortical Implantable Systems examines the design for data acquisition and transmission in cortical implants. The first part of the book covers existing system level cortical implants, as well as future devices. The authors discuss the major constraints in terms of microelectronic integrations are presented. The second part of the book focuses on system-level as well as circuit and system level solutions to the development of ultra low-power and low-noise microelectronics for cortical implants. Existing solutions are presented and novel methods and solutions proposed. The third part of the book focuses on the usage of digital impulse radio ultra wide band transmission as an efficient method to transmit cortically neural recorded data at high data rate to the outside world. Original architectural and circuit and system solutions are discussed
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 State of the Art . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 System Level Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Analog/Mixed-Signal Front-End . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Wireless Data Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4 Multichannel Neural Recording Systems . . . . . . . . . . . . . . . . . 15
2.5 Research Opportunities in Developing Multichannel
Neural Recording Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 Power Transmission and Voltage Regulation. . . . . . . . . . . . . . . . . 19
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.2 1.8 V LDO Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.2 Design Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2.3 Power Supply Rejection Ratio . . . . . . . . . . . . . . . . . . . 28
3.2.4 Bandgap Reference Circuit. . . . . . . . . . . . . . . . . . . . . . 30
3.2.5 Experimental Results . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3 1.2 V LDO Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . 36
3.3.1 Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.3.2 Measurement Results. . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4 Circuit Design for Ultra Low-Noise and Low-Power
Sensor Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.2 Micropower Neural Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.2.1 Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.2.2 Channel Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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Wireless Cortical Implantable Systems.pdf
(6.64 MB, 下载次数: 90 )