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Wireless Power Transfer And Data Communication For Intracranial Neural Recording Applications
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Book Synopsis Wireless Power Transfer and Data Communication for Intracranial Neural Recording Applications by : Kerim Türe
Download or read book Wireless Power Transfer and Data Communication for Intracranial Neural Recording Applications written by Kerim Türe and published by Springer Nature. This book was released on 2020-03-04 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes new circuits and systems for implantable wireless neural monitoring systems and explains the design of a batteryless, remotely-powered implantable micro-system, designed for continuous neural monitoring. Following new trends in implantable biomedical applications, the authors demonstrate a system which is capable of efficient remote powering and reliable data communication. Novel architecture and design methodologies are used for low power and small area wireless communication link. Additionally, hermetically sealed packaging and in-vivo validation of the implantable device is presented.
Book Synopsis Wireless Power Transfer and Data Communication for Neural Implants by : Gürkan Yilmaz
Download or read book Wireless Power Transfer and Data Communication for Neural Implants written by Gürkan Yilmaz and published by Springer. This book was released on 2017-01-01 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Wireless Power Transfer and Data Communication for Intracranial Neural Implants Case Study by : Gürkan Yilmaz
Download or read book Wireless Power Transfer and Data Communication for Intracranial Neural Implants Case Study written by Gürkan Yilmaz and published by . This book was released on 2014 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanoelectronics Devices: Design, Materials, and Applications Part II by : Gopal Rawat
Download or read book Nanoelectronics Devices: Design, Materials, and Applications Part II written by Gopal Rawat and published by Bentham Science Publishers. This book was released on 2023-11-28 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoelectronics Devices: Design, Materials, and Applications provides information about the progress of nanomaterial and nanoelectronic devices and their applications in diverse fields (including semiconductor electronics, biomedical engineering, energy production and agriculture). The book is divided into two parts. The editors have included a blend of basic and advanced information with references to current research. The book is intended as an update for researchers and industry professionals in the field of electronics and nanotechnology. It can also serve as a reference book for students taking advanced courses in electronics and technology. The editors have included MCQs for evaluating the readers’ understanding of the topics covered in the book. Topics Covered in Part 2 include applications of nanoelectronics for different devices and materials. - Photonic crystal waveguide geometry - 8kW to 80kW power grids with simple energy storage systems - Two-dimensional material and based heterojunctions like MoS2 /graphene, MoS2 /CNT, and MoS2 /WS2, - 5G communication material - Wearable devices like electronic skin, intelligent wound bandages, tattoo-based electrochemical sensors - PEDOT: PSS-based EEG - New materials for medicine
Book Synopsis ETCMOS 2016 Vol.2: Devices, Circuits and Systems Track by : ETCMOS
Download or read book ETCMOS 2016 Vol.2: Devices, Circuits and Systems Track written by ETCMOS and published by CMOS Emerging Technologies Research. This book was released on 2016-05-26 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presentation slides from the Devices, Circuits and Systems track at the ETCMOS 2016 conference in Montreal, May 25-27, 2016
Book Synopsis Wireless Biomedical Sensing by : Vaishnavi Nattar Ranganathan
Download or read book Wireless Biomedical Sensing written by Vaishnavi Nattar Ranganathan and published by . This book was released on 2018 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work addresses challenges in power delivery, efficient computation and communication to power-constrained wearable and implantable devices. We are surrounded today by over 25 billion smart devices, and this number is constantly increasing. Owing to the shrinking CMOS technology, some of these devices are so small that they can even be worn on the human body or implanted inside it. The sheer number of devices and their drastic minia- turization and integration into the human body posit two major challenges. First, how do we communicate with these numerous small devices? Second, how do we deliver power to them? The wearable or implantable nature of these smart devices only exacerbates these challenges. Since these devices are designed to be worn or implanted, they must be small, comfortable and, most importantly, safe to use. They must be small so that they are dis- crete when worn or can be implanted easily. They must be comfortable so that people can use them for extended periods of time for physiological monitoring, without the devices in- terfering with their normal lifestyle. Finally, they must not cause discomfort by overheating and operate at low power consumption so that they are safe to use. Traditionally, cables were used to power or communicate. However, with the proliferation of smart devices, tethering to communicate with or to recharge them is no longer a practical solution. Bluetooth technology allows some degree of wireless communication with smart devices, but it is a power-hungry technology and thus unsuited for implanted devices. Hence there is a need for reliable communication of data at low power levels. Batteries are currently the most prevalent option for power delivery, but are a less-than-ideal solution. While progress in CMOS technology has reduced size and power consumption of smart devices, the batteries used to power them are still large. With higher energy requirements, larger these batteries become. Even when rechargeable, these batteries have a diminishing eciency over their lifetime of about two to three years. Hence, they are not the best option for powering these billions of devices, especially when they are implanted in the body and need surgery for replacement. One of the solutions to make these devices untethered and battery free is to use wireless power transfer and low-power wireless communication. However, these smart devices used in diverse application have vastly dierent power requirements and communication data rates. Hence, it becomes dicult to standardize ways to wirelessly power and communicate with them. The wireless solutions presented here are applied to two different applications, one wearable and the other implantable, demonstrating the ability to serve diverse requirements. The first application includes a wearable sensing platform that operates with ultra-low power consumption to perform analog sensing of physiological signals and use backscatter communication, which is an ultra-low power communication method, to transmit sensed data. The total power consumption for sensing and communicating data to an external base station is as low as 35 [micro]W to 160 [micro]W. This modular wireless platform is battery- free and can be made in the form of an adhesive bandaid that can sense physiological parameters like heart rate, breathing rate and sense sounds to monitor health conditions. Thus it enables simple, continuous and seamless monitoring of health parameters while a person goes about their everyday tasks. The second application is an implantable platform that can record neural signals from the brain and process them locally to identify events in the signals that can trigger neural stimulations. The requirements for this implantable device are far more complex than the simple wearable application. The implants operate with several 100 mW of power consumption and need several Mbps data rates to transmit the recorded and processed data out to the user. To address the high power and high data rate requirements, this work presents a novel dual-band approach that supports wireless power delivery at high frequency (HF) and backscatter communication at ultra-high frequency (UHF). At the smart implantable device, the dual-band wireless system harvests energy from HF wireless signals while simultaneously communicating data using UHF backscatter. To localize the implant and deliver power to it, a novel low-overhead echolocation method is presented in this work. This method uses reflected parameters on a phased array of wireless power transmitters to locate the wireless device and deliver focussed power to it. The implantable platform is intended for use in two different application domains. First, in neural engineering research where neural interface devices are used to understand, record and map the brain function and to leverage them and develop brain-controlled technology like prosthetic limbs. Second, for treatment and rehabilitation of people suffering from spinal cord injury and chronic neural disorders. An implantable brain-computer-spinal interface (BCSI) is presented in this work, that records neural signals and processes them locally to extract intent. The decoded action intention can be used to trigger stimulation in the spinal cord to reanimate the paralyzed limb and perform the action. In addition, this device is developed as a low-power FPGA-based platform so that it is reconfigurable to enable research in closed-loop algorithms to understand and treat several other neural disorders. We expect that such wireless biomedical sensing can provide a better understanding of physiological parameters and enable treatment for chronic disorders.
Book Synopsis Antenna and Sensor Technologies in Modern Medical Applications by : Yahya Rahmat-Samii
Download or read book Antenna and Sensor Technologies in Modern Medical Applications written by Yahya Rahmat-Samii and published by John Wiley & Sons. This book was released on 2021-02-25 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the theory and recent development in the medical use of antenna technology Antenna and Sensor Technologies in Modern Medical Applications offers a comprehensive review of the theoretical background, design, and the latest developments in the application of antenna technology. Written by two experts in the field, the book presents the most recent research in the burgeoning field of wireless medical telemetry and sensing that covers both wearable and implantable antenna and sensor technologies. The authors review the integrated devices that include various types of sensors wired within a wearable garment that can be paired with external devices. The text covers important developments in sensor-integrated clothing that are synonymous with athletic apparel with built-in electronics. Information on implantable devices is also covered. The book explores technologies that utilize both inductive coupling and far field propagation. These include minimally invasive microwave ablation antennas, wireless targeted drug delivery, and much more. This important book: Covers recent developments in wireless medical telemetry Reviews the theory and design of in vitro/in vivo testing Explores emerging technologies in 2D and 3D printing of antenna/sensor fabrication Includes a chapter with an annotated list of the most comprehensive and important references in the field Written for students of engineering and antenna and sensor engineers, Antenna and Sensor Technologies in Modern Medical Applications is an essential guide to understanding human body interaction with antennas and sensors.
Book Synopsis Resonant Wireless Power Transfer with Embedded Communication for More Versatile and Efficient Applications by : Erik G. Johnson
Download or read book Resonant Wireless Power Transfer with Embedded Communication for More Versatile and Efficient Applications written by Erik G. Johnson and published by . This book was released on 2016 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the feasibility of embedding communication within the power transfer channel of a near field wireless power transfer system in order to increase the versatility and efficiency of the system. The system was built around the LTC4125 auto-resonant wireless power transmitter IC. Both the transmitter and receiver were tuned to approximately 100kHz with a communication data bit rate of 1kHz. The thesis covers both resonant wireless power transfer theory, the details of the embedded communication and the results obtained.
Book Synopsis Energy-Efficient Integrated Biomedical Circuits and Systems for Unobtrusive Neural Recording and Wireless Body-Area Networks by : Chul Kim
Download or read book Energy-Efficient Integrated Biomedical Circuits and Systems for Unobtrusive Neural Recording and Wireless Body-Area Networks written by Chul Kim and published by . This book was released on 2017 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite tremendous progress over the years, current brain-machine interface (BMI) systems are relatively bulky, highly invasive, and limited in their effectiveness except for highly constrained tasks such as moving a cursor on a computer screen. To improve performance of current BMI systems, it is necessary to dramatically increase spatial resolution and coverage across the brain without constraining the mobility of the subject. This calls for innovative approaches to high-density integrated neural recording and stimulation using non-invasive or minimally invasive microelectrode and custom silicon integrated circuits at extreme energy and area efficiency. In this thesis, I present energy-efficient fully integrated miniaturized implants for electrocortical recording and stimulation, and unobtrusive body-area networks systems for subcutaneous power delivery and data communication, as fundamental building blocks to next generation BMI. First I describe a fully wireless, encapsulated neural interface and acquisition chip (ENIAC) in 180nm silicon-on-insulator (SOI) complementary metal-oxide-semiconductor (CMOS) technology for 16-channel neural recording and stimulation including integrated 4x4 electrode array, coil antenna, and wireless power transfer and data telemetry without any external components, completely contained in less than 3mm3 volume suitable for minimally invasive surgical insertion on the cortical surface. A novel fully integrated wireless power receiver design with an RF-decoupled H-tree signal distribution network delivers 1mW power over 1 cm distance while mitigating RF interference in the sensitive analog front-end and acquisition circuits for recording of electrocorticography (ECoG) signals transmitted through the skull. Second I highlight a 1mm2 16-channel neural recording and acquisition system-on-chip in 65nm CMOS offering 92 dB input dynamic range and
Book Synopsis Emerging Capabilities and Applications of Wireless Power Transfer by : Alicia Triviño-Cabrera
Download or read book Emerging Capabilities and Applications of Wireless Power Transfer written by Alicia Triviño-Cabrera and published by Information Science Reference. This book was released on 2018-12-18 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Data-rate Ultra Low-power Backscatter Wireless Communication Systems for Brain-computer Interfaces by : Eleftherios Kampianakis
Download or read book High Data-rate Ultra Low-power Backscatter Wireless Communication Systems for Brain-computer Interfaces written by Eleftherios Kampianakis and published by . This book was released on 2019 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural interfacing is a promising technology for effectively treating a multitude of challenging clinical conditions. Recent research has demonstrated that some tetraplegic patients can control robotic limbs using a brain-computer interface (BCI), signifying the beginning of an era wherein many forms of paralysis may be treatable with a neuro-prosthesis. However, the current state of the art is bulky, tethered, and impractical for applications outside a clinical lab setting. Moreover, current wireless communication approaches for brain computer interfaces (BCI) do not meet the necessary specifications for power, size, and bandwidth. In contrast, we developed fully integrated BCIs equipped with high data-rate and low power miniaturized wireless backscatter communication systems to enable the development of autonomous brain-controlled prosthetics. First, we proposed a wireless [mu]-Power, low-noise frequency mixing approach for extending the passband frequency response of existing neural interfaces. We demonstrated the translation of a pre-recorded mouse electrocorticogram from a frequency range of 0.5 Hz to 100 Hz up to an intermediate frequency (IF) of 407 Hz, thus enabling the use of an existing integrated circuit (IC) for electrocorticography (ECoG), despite its low-frequency cutoff of 12 Hz. Subsequently, we presented a dual-band implantable BCI that integrates 47%-efficient high frequency (HF) wireless power delivery into a 5 Mb/s ultra-high frequency (UHF) backscatter communication. The implant system supports ten neural channels sampled at 26.10 kHz and four electromyography (EMG) channels sampled at 1.628 kHz and can communicate with a custom software-defined-radio-based external system with a packet error ratio (PER) that is better than 0.19%~at an implant depth of up to 3 cm. Finally, in order to enable neural plasticity experiments inside the home cages of freely behaving animals, we developed a 25 Mbps backscatter-based data uplink for Neurochip 3 using a differential quadrature phase shift keying (DQPSK) constellation. We statically collected 104 packets from 126 locations, and the system exhibited effectively 0% (PER) for all but two of the surveyed sites despite the reverberant cavity effects of the animal cage that critically impair the communication channel.
Book Synopsis Design of Wireless Power Transfer and Data Telemetry System for Biomedical Applications by : Ashraf Bin Islam
Download or read book Design of Wireless Power Transfer and Data Telemetry System for Biomedical Applications written by Ashraf Bin Islam and published by . This book was released on 2011 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advancement of biomedical instrumentation technologies, sensor based remote healthcare monitoring system is gaining more attention day by day. These sensors can be classified as wearable and implantable. While the wearable sensors are placed outside the body, the implantable types are placed underneath the skin or inside the body cavity typically via surgical means. Implantable sensors are placed inside the human body to acquire the information on the vital physiological phenomena such as glucose, lactate, pH, oxygen, etc. These sensors have associated circuits for sensor signal processing and data transmission. Powering the circuit is always a crucial design issue. Batteries cannot be used in implantable sensors which can come in contact with the blood resulting in serious health risks. An alternate approach is to supply power wirelessly for tether-less and battery- less operation of the circuits. Inductive power transfer is the most common method of wireless power transfer to the implantable sensors. For good inductive coupling, the inductors should have high inductance and high quality factor. But the physical dimensions of the implanted inductors cannot be large due to a number of biomedical constraints. Therefore, there is a need for small sized and high inductance, high quality factor inductors for implantable sensor applications. In this work, design of a multi-spiral solenoidal printed circuit board (PCB) inductor for biomedical application is presented. The targeted frequency for power transfer is 13.56 MHz which is within the license-free industrial, scientific and medical (ISM) band. A figure of merit based optimization technique has been utilized to optimize the PCB inductors. Similar principal is applied to design on-chip inductor which could be a potential solution for further miniaturization of the implantable system. Typically on-chip inductors require very small footprint around few mm2 and accordingly have very small values around tens of nH. To accommodate the small values of inductance the operating frequency needs to be increased to GHz range. For layered human tissue, the optimum frequency of power transfer is 1 GHz for smaller coil size. For this reason, design and optimization of multi-spiral solenoidal integrated inductors for 1 GHz frequency is proposed. Finally, it is demonstrated that the proposed inductors exhibit a better overall performance in comparison with the conventional inductors for biomedical applications.
Book Synopsis Sensors and Microsystems by : Girolamo Di Francia
Download or read book Sensors and Microsystems written by Girolamo Di Francia and published by Springer Nature. This book was released on 2022-06-28 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book showcases the state of the art in the field of sensors and microsystems, revealing the impressive potential of novel methodologies and technologies. It covers a broad range of aspects, including: bio-, physical and chemical sensors, actuators, micro- and nano-structured materials, mechanisms of interaction and signal transduction, polymers and biomaterials, sensor electronics and instrumentation, analytical microsystems, recognition systems and signal analysis and sensor networks as well as manufacturing technologies, environmental, food, energy and biomedical applications. The contents reflect the outcomes of the activities of AISEM (Italian Association of Sensors and Microsystems) in 2021. Co-Edited by B. Andò, F. Baldini, G. Betta, D. Compagnone, S. Conoci, E. Comini, V. Ferrari, E. La Salandra, L. Lorenzelli, A.G. Mignani, G. Marrazza, G. Neri, P. Siciliano.
Book Synopsis A Low Cost, End-to-End Multi-Channel Wireless Neural Recording System by : Benjamin Donald Wood
Download or read book A Low Cost, End-to-End Multi-Channel Wireless Neural Recording System written by Benjamin Donald Wood and published by . This book was released on 2018 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few years neural recording and stimulation technology has advanced rapidly. As new implants and electrode devices are implemented and tested, a full system capable of effectively utilizing them within a medical application has remained unrealized. A mechanism that is able to wirelessly communicate with and control such instruments would drastically increase the ease with which they can be used in scenarios such as free-moving animal experiments, medical studies, and field trials. Certain constraints come with constructing such an end-to-end device, such as limits on power, cost, and size, along with stringent performance requirements on data rates and range. This thesis introduces a fully developed wireless neural recording system. Consisting of a multi-channel neural implant, a small microcontroller relay device, and a tablet running a control application, it is capable of recording and displaying neural data at high speed and long range. Communication between the three components is accomplished purely through wireless transmissions, utilizing inductive coils to transfer data through the patient's tissue along with an 802.11 WiFi to establish a link and facilitate transmission between the microcontroller and control software. The control software gives the researcher freedom to specify recording parameters such as the amount of data desired, sampling speed, recording channels, and format of the data to be sent from the implant. Upon data reception, the software processes the received data, creating a time series of neural points per channel that can be graphed, displayed, and downloaded. This modular and simple approach to an end-to-end wireless recording system will allow cutting edge neural implants to be quickly integrated into full solutions that can be used in neurological and biomedical research.
Book Synopsis Simultaneous Wireless Power Transmission and Data Communication by : Shabnam Ladan
Download or read book Simultaneous Wireless Power Transmission and Data Communication written by Shabnam Ladan and published by . This book was released on 2014 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ultra Low Power Implantable Neural Recording System for Brain-machine Interfaces by : Woradorn Wattanapanitch
Download or read book An Ultra Low Power Implantable Neural Recording System for Brain-machine Interfaces written by Woradorn Wattanapanitch and published by . This book was released on 2011 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few decades, direct recordings from different areas of the brain have enabled scientists to gradually understand and unlock the secrets of neural coding. This scientific advancement has shown great promise for successful development of practical brain-machine interfaces (BMIs) to restore lost body functions to patients with disorders in the central nervous system. Practical BMIs require the uses of implantable wireless neural recording systems to record and process neural signals, before transmitting neural information wirelessly to an external device, while avoiding the risk of infection due to through-skin connections. The implantability requirement poses major constraints on the size and total power consumption of the neural recording system. This thesis presents the design of an ultra-low-power implantable wireless neural recording system for use in brain-machine interfaces. The system is capable of amplifying and digitizing neural signals from 32 recording electrodes, and processing the digitized neural data before transmitting the neural information wirelessly to a receiver at a data rate of 2.5 Mbps. By combining state-of-the-art custom ASICs, a commercially-available FPGA, and discrete components, the system achieves excellent energy efficiency, while still offering design flexibility during the system development phase. The system's power consumption of 6.4 mW from a 3.6-V supply at a wireless output data rate of 2.5 Mbps makes it the most energy-efficient implantable wireless neural recording system reported to date. The system is integrated on a flexible PCB platform with dimensions of 1.8 cm x 5.6 cm and is designed to be powered by an implantable Li-ion battery. As part of this thesis, I describe the design of low-power integrated circuits (ICs) for amplification and digitization of the neural signals, including a neural amplifier and a 32-channel neural recording IC. Low-power low-noise design techniques are utilized in the design of the neural amplifier such that it achieves a noise efficiency factor (NEF) of 2.67, which is close to the theoretical limit determined by physics. The neural recording IC consists of neural amplifiers, analog multiplexers, ADCs, serial programming interfaces, and a digital processing unit. It can amplify and digitize neural signals from 32 recording electrodes, with a sampling rate of 31.25 kS/s per channel, and send the digitized data off-chip for further processing. The IC was successfully tested in an in-vivo wireless recording experiment from a behaving primate with an average power dissipation per channel of 10.1 [mu]W. Such a system is also widely useful in implantable brain-machine interfaces for the blind and paralyzed, and in cochlea implants for the deaf.
Book Synopsis Implantable Biomedical Microsystems by : Swarup Bhunia
Download or read book Implantable Biomedical Microsystems written by Swarup Bhunia and published by Elsevier. This book was released on 2015-01-28 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and innovation in areas such as circuits, microsystems, packaging, biocompatibility, miniaturization, power supplies, remote control, reliability, and lifespan are leading to a rapid increase in the range of devices and corresponding applications in the field of wearable and implantable biomedical microsystems, which are used for monitoring, diagnosing, and controlling the health conditions of the human body. This book provides comprehensive coverage of the fundamental design principles and validation for implantable microsystems, as well as several major application areas. Each component in an implantable device is described in details, and major case studies demonstrate how these systems can be optimized for specific design objectives. The case studies include applications of implantable neural signal processors, brain-machine interface (BMI) systems intended for both data recording and treatment, neural prosthesis, bladder pressure monitoring for treating urinary incontinence, implantable imaging devices for early detection and diagnosis of diseases as well as electrical conduction block of peripheral nerve for chronic pain management. Implantable Biomedical Microsystems is the first comprehensive coverage of bioimplantable system design providing an invaluable information source for researchers in Biomedical, Electrical, Computer, Systems, and Mechanical Engineering as well as engineers involved in design and development of wearable and implantable bioelectronic devices and, more generally, teams working on low-power microsystems and their corresponding wireless energy and data links. - First time comprehensive coverage of system-level and component-level design and engineering aspects for implantable microsystems. - Provides insight into a wide range of proven applications and application specific design trade-offs of bioimplantable systems, including several major case studies - Enables Engineers involved in development of implantable electronic systems to optimize applications for specific design objectives.
