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Author: Ian David O'Donnell
Publisher:
ISBN:
Category :
Languages : en
Pages : 560
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Book Description
Interest in indoor wireless communications has been increasing. In addition to high throughput WLAN systems such as 802.11a/b/g/n, attention is also being focused on lower rate, short distance systems such as Bluetooth and Zigbee. These low rate radios are being proposed for a variety of applications including automation/security, smart toys, remote sensing/control, asset tracking, and as a replacement for computer peripheral wires. While not demanding aggressive throughput, these radios do require low cost, power efficient operation and optionally the ability to perform ranging. Unfortunately, currently reported radios are up to an order of magnitude away from these power and cost targets or do not support ranging. However, a recent ruling from the FCC has opened up nearly 8GHz of unlicensed spectrum (from dc to 960MHz and from 3.1GHz to 10.6GHz) for ultra-wideband (UWB) deployment. One attractive method of UWB signaling that seems suited to a low power, highly integrated implementation communicates with short pulses, on the order of a nanosecond, that spread energy over at least 500MHz of bandwidth. Termed "impulse-UWB," the baseband nature of this signaling promises low cost and low power consumption through design simplicity, pulsed (or "duty-cycled") operation, and a "mostly-digital" implementation. The benefits of this approach are balanced by the risk of jamming from in-band interference, of stricter sampling and gain constraints, and of increased digital complexity. This dissertation presents the system exploration, specification, design, and demonstration of a low power, highly integrated, flexible, baseband, impulse ultra-wideband transceiver front-end.
Author: Ian David O'Donnell
Publisher:
ISBN:
Category :
Languages : en
Pages : 560
Get Book Here
Book Description
Interest in indoor wireless communications has been increasing. In addition to high throughput WLAN systems such as 802.11a/b/g/n, attention is also being focused on lower rate, short distance systems such as Bluetooth and Zigbee. These low rate radios are being proposed for a variety of applications including automation/security, smart toys, remote sensing/control, asset tracking, and as a replacement for computer peripheral wires. While not demanding aggressive throughput, these radios do require low cost, power efficient operation and optionally the ability to perform ranging. Unfortunately, currently reported radios are up to an order of magnitude away from these power and cost targets or do not support ranging. However, a recent ruling from the FCC has opened up nearly 8GHz of unlicensed spectrum (from dc to 960MHz and from 3.1GHz to 10.6GHz) for ultra-wideband (UWB) deployment. One attractive method of UWB signaling that seems suited to a low power, highly integrated implementation communicates with short pulses, on the order of a nanosecond, that spread energy over at least 500MHz of bandwidth. Termed "impulse-UWB," the baseband nature of this signaling promises low cost and low power consumption through design simplicity, pulsed (or "duty-cycled") operation, and a "mostly-digital" implementation. The benefits of this approach are balanced by the risk of jamming from in-band interference, of stricter sampling and gain constraints, and of increased digital complexity. This dissertation presents the system exploration, specification, design, and demonstration of a low power, highly integrated, flexible, baseband, impulse ultra-wideband transceiver front-end.
Author: Ranjit Gharpurey
Publisher: Springer Science & Business Media
ISBN: 0387692789
Category : Technology & Engineering
Languages : en
Pages : 207
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Book Description
This book is a compilation of chapters on various aspects of Ultra Wideband. The book includes chapters on Ultra Wideband transceiver implementations, pulse-based systems and one on the implementation for the WiMedia/MBOFDM approach. Another chapter discusses the implementation of the physical layer baseband, including the ADC and post-ADC processing required in the UWB system. Future advances such as multiantenna UWB solutions are also discussed.
Author: Aminghasem Safarian
Publisher: Springer Science & Business Media
ISBN: 1402067224
Category : Technology & Engineering
Languages : en
Pages : 97
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Book Description
A comprehensive study of silicon-based distributed architectures in wideband circuits are presented in this book. Novel circuit architectures for ultra-wideband (UWB) wireless technologies are described. The book begins with an introduction of several transceiver architectures for UWB. The discussion then focuses on RF front-end of the UWB radio. Therefore, the book will be of interest to RF circuit designers and students.
Author: Mehmet R. Yuce
Publisher: Springer Science & Business Media
ISBN: 1461488966
Category : Medical
Languages : en
Pages : 265
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Book Description
This book investigates the design of devices, systems, and circuits for medical applications using the two recently established frequency bands: ultra-wideband (3.1-10.6 GHz) and 60 GHz ISM band. These two bands provide the largest bandwidths available for communication technologies and present many attractive opportunities for medical applications. The applications of these bands in healthcare are wireless body area network (WBAN), medical imaging, biomedical sensing, wearable and implantable devices, fast medical device connectivity, video data transmission, and vital signs monitoring. The recent technological advances and developments proposed or used in medicine based on these two bands are covered. The book introduces possible solutions and design techniques to efficiently implement these systems in medical environment. All individual chapters are written by leading experts in their fields. Contributions by authors are on various applications of ultra-wideband and the 60 GHz ISM band including circuit implementation, UWB and 60 GHz signal transmission around and in-body, antenna design solution, hardware implementation of body sensors, UWB transceiver design, 60 GHz transceiver design, UWB radar for contactless respiratory monitoring, and ultra-wideband based medical Imaging. The book will be a key resource for medical professionals, bio-medical engineers, and graduate and senior undergraduate students in computer, electrical, electronic and biomedical engineering disciplines.
Author: Marian Verhelst
Publisher: Springer Science & Business Media
ISBN: 9048126940
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
Smart energy management, both at design time and at run time, is indispensable in modern radios. It requires a careful trade-off between the system’s performance, and its power consumption. Moreover, the design has to be dynamically reconfigurable to optimally balance these parameters at run time, depending on the current operating conditions. Energy Scalable Radio Design describes and applies an energy-driven design strategy to the design of an energy-efficient, highly scalable, pulsed UWB receiver, suitable for low data rate communication and sub-cm ranging. This book meticulously covers the different design steps and the adopted optimizations: System level air interface selection, architectural/algorithmic design space exploration, algorithmic refinement (acquisition, synchronization and ranging algorithms) and circuit level (RTL) implementation based on the FLEXmodule-concept. Measurement results demonstrate the effectiveness and necessity of the energy-driven design strategy.
Author: Li Qiang
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838368252
Category : Metal oxide semiconductors, Complementary
Languages : en
Pages : 192
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Book Description
The ultra-wideband (UWB) impulse-radio technology has unique features including high data-rate as well as low power consumption with ranging and localization capabilities. An UWB front-end, however, has to accommodate design challenges resulting from the exceptional wide bandwidth of several GHz. This book discusses the implementation issues of the UWB impulse-radio transceiver front-end, including the performance analysis of practical systems and the design of radio-frequency integrated circuits for transceiver front-ends. A general framework for performance evaluation of practical impulse radio system is proposed and demonstrated in scenarios of high-speed data communications as well as low-data-rate wireless body-area networks. An inductorless low- noise amplifier is designed with syncretic adoption of thermal noise canceling, capacitor peaking, and current reuse. The CMOS ransmit/receive switch design with highest reported bandwidth and power handling capability are discussed with customized transistor layout and triple-well resistive body- floating techniques. The prototypes have been demonstrated in state-of-the-art 130nm CMOS technology.
Author: John Gerrits
Publisher: River Publishers
ISBN: 8793379625
Category : Technology & Engineering
Languages : en
Pages : 220
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Book Description
Ultra Wideband (UWB) communications are poised to enable short-range applications, such as remote health monitoring (e-health) and home or office automation. Sensor networks are also suitable candidates for UWB since the low radiated power of the UWB transmitter enables low DC power consumption, yielding long battery life and the possibility to use energy scavenging. Size and cost constraints require a low-complexity approach that allows multiple users to share the same RF bandwidth, and offers robustness to interference, frequency-selective multipath and antenna mismatch. Wideband FM Techniques for Low-Power Wireless Communications presents research and applications that have taken place in UWB Communications over the past years. This book is being published posthumously in agreement with the authors’ former colleagues from both the Swiss Center for Electronics and Microtechnology (CSEM) and Delft University of Technology in The Netherlands.
Author: Vladimir Kopta
Publisher: CRC Press
ISBN: 1000794490
Category : Technology & Engineering
Languages : en
Pages : 224
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Book Description
Over the past two decades we have witnessed the increasing popularity of the internet of things. The vision of billions of connected objects, able to interact with their environment, is the key driver directing the development of future communication devices. Today, power consumption as well as the cost and size of radios remain some of the key obstacles towards fulfilling this vision. Ultra-Low Power FM-UWB Transceivers for IoT presents the latest developments in the field of low power wireless communication. It promotes the FM-UWB modulation scheme as a candidate for short range communication in different IoT scenarios. The FM-UWB has the potential to provide exactly what is missing today. This spread spectrum technique enables significant reduction in transceiver complexity, making it smaller, cheaper and more energy efficient than most alternative options. The book provides an overview of both circuit-level and architectural techniques used in low power radio design, with a comprehensive study of state-of-the-art examples. It summarizes key theoretical aspects of FM-UWB with a glimpse at potential future research directions. Finally, it gives an insight into a full FM-UWB transceiver design, from system level specifications down to transistor level design, demonstrating the modern power reduction circuit techniques. Ultra-Low Power FM-UWB Transceivers for IoT is a perfect text and reference for engineers working in RF IC design and wireless communication, as well as academic staff and graduate students engaged in low power communication systems research.
Author: Mohammad Abdul Matin
Publisher: BoD – Books on Demand
ISBN: 9533074612
Category : Computers
Languages : en
Pages : 364
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Book Description
This book has addressed few challenges to ensure the success of UWB technologies and covers several research areas including UWB low cost transceiver, low noise amplifier (LNA), ADC architectures, UWB filter, and high power UWB amplifiers. It is believed that this book serves as a comprehensive reference for graduate students in UWB technologies.
Author: Alyssa Apsel
Publisher: Springer Science & Business Media
ISBN: 1461418453
Category : Technology & Engineering
Languages : en
Pages : 159
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Book Description
This book covers the fundamental principles behind the design of ultra-low power radios and how they can form networks to facilitate a variety of applications within healthcare and environmental monitoring, since they may operate for years off a small battery or even harvest energy from the environment. These radios are distinct from conventional radios in that they must operate with very constrained resources and low overhead. This book provides a thorough discussion of the challenges associated with designing radios with such constrained resources, as well as fundamental design concepts and practical approaches to implementing working designs. Coverage includes integrated circuit design, timing and control considerations, fundamental theory behind low power and time domain operation, and network/communication protocol considerations.
