SpringerLink Springer Engineering eBooks 2017 English+International

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Preface; Contents; Acronyms; 1 Introduction; 1.1 Problem Definition; 1.2 Motivation and Research Objectives; 1.2.1 Next Generation Neural Recording Systems; 1.2.2 Research Objectives; 1.3 Neural Data Acquisition; 1.4 Anticipated Challenges; 1.5 Book Outline; References; 2 System Overview; 2.1 System Specifications; 2.2 System-Level Solutions; 2.2.1 Single-Frequency Approach; 2.2.2 Two-Frequency Approach; 2.3 Summary; References; 3 Wireless Power Transfer; 3.1 Implant Powering Solutions; 3.1.1 Ambient Energy Harvesting; 3.1.2 Battery Usage; 3.1.3 Wireless Power Transfer.

3.2 Wireless Power Transfer3.3 Magnetic Coupling; 3.4 Implantable Remote Powering Electronics; 3.4.1 Rectifier; 3.4.2 Voltage Regulator; 3.5 Summary; References; 4 Wireless Data Communication; 4.1 Bidirectional Wireless Communication; 4.2 Uplink Communication on the Power Transfer Link; 4.2.1 Modulator; 4.2.2 ASK Demodulator; 4.3 Uplink Communication with a Dedicated Transmitter and Receiver; 4.3.1 Oscillator; 4.3.2 Loop Antenna; 4.3.3 External Base Station Receiver; 4.4 Downlink Communication; 4.5 Clock Recovery; 4.6 Summary; References; 5 Packaging of the Implant; 5.1 Background.

5.2 Diffusion Modeling of a Polymeric Package5.3 Temperature Elevation Considerations; 5.4 Summary; References; 6 System-Level Experiments and Results; 6.1 System Integration and Characterization; 6.1.1 Single-Frequency Approach; 6.1.2 Two-Frequency Approach; 6.2 In vitro Experiments; 6.2.1 Long-Term In vitro Experiments; 6.3 In vivo Experiments; 6.3.1 Surgical Procedure for the Implantation of the Electrode Array into a Rat Brain; 6.4 Summary; References; 7 Conclusion; Index.

This book presents new circuits and systems for implantable biomedical applications targeting neural recording. The authors describe a system design adapted to conform to the requirements of an epilepsy monitoring system. Throughout the book, these requirements are reflected in terms of implant size, power consumption, and data rate. In addition to theoretical background which explains the relevant technical challenges, the authors provide practical, step-by-step solutions to these problems. Readers will gain understanding of the numerical values in such a system, enabling projections for feasibility of new projects. Provides complete, system-level perspective for implantable batteryless biomedical system; Extends design example to implementation and long term in-vitro validation; Discusses system design concerns regarding wireless power transmission and wireless data communication, particularly for systems in which both are performed on the same channel/frequency; Presents fully-integrated, implantable system and hermetically sealed packaging.