Multi Channel High Dynamic Range Implantable Vco Based Neural Sensing System PDF Download
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Author | : Wenlong Jiang |
Publisher | : |
Total Pages | : 111 |
Release | : 2017 |
Genre | : |
ISBN | : |
Download Multi-Channel High-Dynamic-Range Implantable VCO-Based Neural-Sensing System Book in PDF, ePub and Kindle
Neuromodulation is the alternation of nerve activity through targeted delivery of a stimulus, such as electrical stimulation, to specific sites in the body. Deep brain stimulation (DBS) is a commonly-used neuromodulation treatment for neurological ailments when traditional methods, such as surgery, medication or psychotherapy, fail. DBS is performed by sending controlled electrical pulses into the brain to evoke the desired response. However, existing DBS systems can only administer open-loop stimulation over a limited number of channels. Future neuromodulation systems require a multi-channel closed-loop platform that can provide high spatial precision, and automatically adjust stimulation parameters based on feedback from recorded neural signals. This multi-channel, closed-loop system poses new challenges for brain-sensing circuit and system design. To enable closed-loop operation, the sensing circuit needs to work with concurrent stimulation. Therefore, it needs to provide a large input range to prevent saturation under stimulation artifacts. In addition, the sensing circuit should simultaneously meet device/patient safety constraints. Current state-of-the-art neural sensing circuits, however, do not meet these requirements. This work presents an implantable VCO-based neural-sensing front-end design intended for multi-channel, closed-loop neuromodulation applications. Specifically, it converts the input voltage into the phase domain, and performs direct digitization without any voltage-domain amplification, thus preventing saturation. The phase-domain processing allows a large input range that can comprise both stimulation artifacts and the neural signals. Four techniques have been implemented to overcome design challenges: (1) in the high-pass filter, we utilize a multi-rate duty-cycled resistor as a reliable solution to attenuate electrode-offsets; (2) inside of the VCO, chopping is applied to lower circuit noise; (3) at the analog-digital interface, we employ a new glitch-free quantizer; and (4) after digitization, circuit linearity is restored through the digital non-linearity correction. With these techniques, the design achieves 10x linear range and 2-3 bit ENOB improvement over prior-art with comparable power and noise performance. This work also presents a 32/64-channel sensing chip based on the proposed front-end design. The chip is assembled on a miniaturized PCB to achieve a fully integrated neuromodulation system. Sensing performance and function under concurrent stimulation have been verified in bench-top and in-vitro environments. This allows further development of a complete multi-channel closed-loop neuromodulation implant.
Author | : Vinit Kumar Gunjan |
Publisher | : Springer Nature |
Total Pages | : 243 |
Release | : 2020-02-04 |
Genre | : Technology & Engineering |
ISBN | : 3030384454 |
Download Modern Approaches in Machine Learning and Cognitive Science: A Walkthrough Book in PDF, ePub and Kindle
This book discusses various machine learning & cognitive science approaches, presenting high-throughput research by experts in this area. Bringing together machine learning, cognitive science and other aspects of artificial intelligence to help provide a roadmap for future research on intelligent systems, the book is a valuable reference resource for students, researchers and industry practitioners wanting to keep abreast of recent developments in this dynamic, exciting and profitable research field. It is intended for postgraduate students, researchers, scholars and developers who are interested in machine learning and cognitive research, and is also suitable for senior undergraduate courses in related topics. Further, it is useful for practitioners dealing with advanced data processing, applied mathematicians, developers of software for agent-oriented systems and developers of embedded and real-time systems.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2018 |
Genre | : |
ISBN | : 9781538642146 |
Download 2018 Symposium on VLSI Circuits Digest of Technical Papers Book in PDF, ePub and Kindle
Author | : Ali M. Niknejad |
Publisher | : Springer Science & Business Media |
Total Pages | : 313 |
Release | : 2008-01-03 |
Genre | : Technology & Engineering |
ISBN | : 0387765611 |
Download mm-Wave Silicon Technology Book in PDF, ePub and Kindle
This book compiles and presents the research results from the past five years in mm-wave Silicon circuits. This area has received a great deal of interest from the research community including several university and research groups. The book covers device modeling, circuit building blocks, phased array systems, and antennas and packaging. It focuses on the techniques that uniquely take advantage of the scale and integration offered by silicon based technologies.
Author | : Shanthi Pavan |
Publisher | : John Wiley & Sons |
Total Pages | : 596 |
Release | : 2017-01-24 |
Genre | : Technology & Engineering |
ISBN | : 1119258278 |
Download Understanding Delta-Sigma Data Converters Book in PDF, ePub and Kindle
This new edition introduces operation and design techniques for Sigma-Delta converters in physical and conceptual terms, and includes chapters which explore developments in the field over the last decade Includes information on MASH architectures, digital-to-analog converter (DAC) mismatch and mismatch shaping Investigates new topics including continuous-time ΔΣ analog-to-digital converters (ADCs) principles and designs, circuit design for both continuous-time and discrete-time ΔΣ ADCs, decimation and interpolation filters, and incremental ADCs Provides emphasis on practical design issues for industry professionals
Author | : Jordi Colomer-Farrarons |
Publisher | : Springer Science & Business Media |
Total Pages | : 169 |
Release | : 2011-02-17 |
Genre | : Technology & Engineering |
ISBN | : 9400706863 |
Download A CMOS Self-Powered Front-End Architecture for Subcutaneous Event-Detector Devices Book in PDF, ePub and Kindle
A CMOS Self-Powered Front-End Architecture for Subcutaneous Event-Detector Devices presents the conception and prototype realization of a Self-Powered architecture for subcutaneous detector devices. The architecture is designed to work as a true/false (event detector) or threshold level alarm of some substances, ions, etc... that are detected through a three-electrodes amperometric BioSensor approach. The device is envisaged as a Low-Power subcutaneous implantable application powered by an inductive link, one emitter antenna at the external side of the skin and the receiver antenna under the skin. The sensor is controlled with a Potentiostat circuit and then, a post-processing unit detects the desired levels and activates the transmission via a backscattering method by the inductive link. All the instrumentation, except the power module, is implemented in the so called BioChip. Following the idea of the powering link to harvest energy of the magnetic induced link at the implanted device, a Multi-Harvesting Power Chip (MHPC) has been also designed.
Author | : Randy Frank |
Publisher | : Artech House Publishers |
Total Pages | : 296 |
Release | : 1996 |
Genre | : Technology & Engineering |
ISBN | : |
Download Understanding Smart Sensors Book in PDF, ePub and Kindle
"Two of the most important trends in sensor development in recent years have been advances in micromachined sensing elements of all kinds, and the increase in intelligence applied at the sensor level. This book addresses both, and provides a good overview of current technology". -- I&CS
Author | : Mona M. Hella |
Publisher | : CRC Press |
Total Pages | : 329 |
Release | : 2017-12-19 |
Genre | : Technology & Engineering |
ISBN | : 1482228947 |
Download Power Management Integrated Circuits Book in PDF, ePub and Kindle
Power Management Integrated Circuits and Technologies delivers a modern treatise on mixed-signal integrated circuit design for power management. Comprised of chapters authored by leading researchers from industry and academia, this definitive text: Describes circuit- and architectural-level innovations that meet advanced power and speed capabilities Explores hybrid inductive-capacitive converters for wide-range dynamic voltage scaling Presents innovative control techniques for single inductor dual output (SIDO) and single inductor multiple output (SIMO) converters Discusses cutting-edge design techniques including switching converters for analog/RF loads Compares the use of GaAs pHEMTs to CMOS devices for efficient high-frequency switching converters Thus, Power Management Integrated Circuits and Technologies provides comprehensive, state-of-the-art coverage of this exciting and emerging field of engineering.
Author | : Boris Murmann |
Publisher | : Springer Nature |
Total Pages | : 597 |
Release | : 2020-06-08 |
Genre | : Science |
ISBN | : 3030183386 |
Download NANO-CHIPS 2030 Book in PDF, ePub and Kindle
In this book, a global team of experts from academia, research institutes and industry presents their vision on how new nano-chip architectures will enable the performance and energy efficiency needed for AI-driven advancements in autonomous mobility, healthcare, and man-machine cooperation. Recent reviews of the status quo, as presented in CHIPS 2020 (Springer), have prompted the need for an urgent reassessment of opportunities in nanoelectronic information technology. As such, this book explores the foundations of a new era in nanoelectronics that will drive progress in intelligent chip systems for energy-efficient information technology, on-chip deep learning for data analytics, and quantum computing. Given its scope, this book provides a timely compendium that hopes to inspire and shape the future of nanoelectronics in the decades to come.
Author | : Patrick P. Mercier |
Publisher | : Springer |
Total Pages | : 399 |
Release | : 2015-07-21 |
Genre | : Technology & Engineering |
ISBN | : 3319147145 |
Download Ultra-Low-Power Short-Range Radios Book in PDF, ePub and Kindle
This book explores the design of ultra-low-power radio-frequency integrated circuits (RFICs), with communication distances ranging from a few centimeters to a few meters. The authors describe leading-edge techniques to achieve ultra-low-power communication over short-range links. Many different applications are covered, ranging from body-area networks to transcutaneous implant communications and smart-appliance sensor networks. Various design techniques are explained to facilitate each of these applications.