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Ultra Low Power Fm Uwb Transceiver For High Density Wireless Sensor Networks
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Book Synopsis Ultra Low Power FM-UWB Transceiver for High-Density Wireless Sensor Networks by : Vladimir Kopta
Download or read book Ultra Low Power FM-UWB Transceiver for High-Density Wireless Sensor Networks written by Vladimir Kopta and published by . This book was released on 2018 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mots-clés de l'auteur: ultra-wideband ; low power ; wireless communication ; RF ; transceiver ; UWB ; frequency modulation ; FM-UWB ; FDMA ; WSN.
Book Synopsis Ultra-Low Power FM-UWB Transceivers for IoT by : Vladimir Kopta
Download or read book Ultra-Low Power FM-UWB Transceivers for IoT written by Vladimir Kopta and published by CRC Press. This book was released on 2022-09-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis FM-UWB Transceivers for Autonomous Wireless Systems by : Nitz Saputra
Download or read book FM-UWB Transceivers for Autonomous Wireless Systems written by Nitz Saputra and published by River Publishers. This book was released on 2017-02-15 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant research effort has been devoted to the study and realization of autonomous wireless systems for wireless sensor and personal-area networking, the internet of things, and machine-to-machine communications. Low-power RF integrated circuits, an energy harvester and a power management circuit are fundamental elements of these systems. An FM-UWB Transceiver for Autonomous Wireless Systems presents state-of-the-art developments in low-power FM-UWB transceiver realizations. The design, performance and implementation of prototype transceivers in CMOS technology are presented. A working hardware realization of an autonomous node that includes a prototype power management circuit is also proposed and detailed in this book. Technical topics include: Low-complexity FM-UWB modulation schemesLow-power FM-UWB transceiver prototypes in CMOS technologyCMOS on-chip digital calibration techniquesSolar power harvester and power management in CMOS for low-power RF circuits An FM-UWB Transceiver for Autonomous Wireless Systems is an ideal text and reference for engineers working in wireless communication industries, as well as academic staff and graduate students engaged in electrical engineering and communication systems research.
Book Synopsis Ultra-low Power Radio Transceiver for Wireless Sensor Networks by : Chi Jeon Hwang
Download or read book Ultra-low Power Radio Transceiver for Wireless Sensor Networks written by Chi Jeon Hwang and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to present the design and implementation of ultra-low power radio transceivers at microwave frequencies, which are applicable to wireless sensor network (WSN) and, in particular, to the requirement of the Speckled Computing Consortium (or SpeckNet). This was achieved through quasi-MMIC prototypes and monolithic microwave integrated circuit (MMIC) with dc power consumption of less than 1mW and radio communication ranges operating at least one metre. A wireless sensor network is made up of widely distributed autonomous devices incorporating sensors to cooperatively monitor physical environments. There are different kinds of sensor network applications in which sensors perform a wide range of activities. Among these, a certain set of applications require that sensor nodes collect information about the physical environment. Each sensor node operates autonomously without a central node of control. However, there are many implementation challenges associated with sensor nodes. These nodes must consume extremely low power and must communicate with their neighbours at bit-rates in the order of hundreds of kilobits per second and potentially need to operate at high volumetric densities. Since the power constraint is the most challenging requirement, the radio transceiver must consume ultra-low power in order to prolong the limited battery capacity of a node. The radio transceiver must also be compact, less than 5?5 mm2, to achieve a target size for sensor node and operate over a range of at least one metre to allow communication between widely deployed nodes. Different transceiver topologies are discussed to choose the radio transceiver architecture with specifications that are required in this project. The conventional heterodyne and homodyne topologies are discussed to be unsuitable methods to achieve low power transceiver due to power hungry circuits and their high complexity. The super-regenerative transceiver is also discussed to be unsuitable method because it has a drawback of inherent frequency instability and its characteristics strongly depend on the performance of the super-regenerative oscillator. Instead, a more efficient method of modulation and demodulation such as on-off keying (OOK) is presented. Furthermore, design considerations are shown which can be used to achieve relatively large output voltages for small input powers using an OOK modulation system. This is important because transceiver does not require the use of additional circuits to increase gain or sensitivity and consequently it achieves lower power consumption in a sensor node. This thesis details the circuit design with both a commercial and in-house device technology with ultra-low dc power consumption while retaining adequate RF performance. It details the design of radio building blocks including amplifiers, oscillators, switches and detectors. Furthermore, the circuit integration is presented to achieve a compact transceiver and different circuit topologies to minimize dc power consumption are described. To achieve the sensitivity requirements of receiver, a detector design method with large output voltage is presented. The receiver is measured to have output voltages of 1mVp-p for input powers of -60dBm over a 1 metre operating range while consuming as much as 420?W. The first prototype combines all required blocks using an in-house GaAs MMIC process with commercial pseudomorphic high electron mobility transistor (PHEMT). The OOK radio transceiver successfully operates at the centre frequency of 10GHz for compact antenna and with ultra-low power consumption and shows an output power of -10.4dBm for the transmitter, an output voltage of 1mVp-p at an operating range of 1 metre for the receiver and a total power consumption of 840?W. Based on this prototype, an MMIC radio transceiver at the 24GHz band is also designed to further improve the performance and reduce the physical size with an advanced 50nm gate-length GaAs metamorphic high electron mobility transistor (MHEMT) device technology.
Book Synopsis Introduction to Ultra Wideband for Wireless Communications by : Homayoun Nikookar
Download or read book Introduction to Ultra Wideband for Wireless Communications written by Homayoun Nikookar and published by Springer Science & Business Media. This book was released on 2008-10-11 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: asakta-buddhih sarvatra . jitatma vigata-sprhah . . . . naiskarmya-siddhim paramam . sannyasenadhigacchati Detached by spiritual intelligence from everything controlling the mind, without material desires, one attains the paramount perfection in cessation of re- tions by renunciation. The Bhagvad Gita (18.49) Compared to traditional carrier-based, Ultra-Wide Band (UWB), or carrier-less, systems implement new paradigms in terms of signal generation and reception. Thus, designing an UWB communication system requires the understanding of how excess bandwidth and very low transmitted powers can be used jointly to provide a reliable radio link. UWB offers systems transceiver potential for very simple implementations. Comparison between UWB and traditional narrow-band systems highlights the following features: Large bandwidth enables very fine time-space resolution for accurate lo- tion of the UWB nodes and for distributing network time stamps. Very short pulses are effectively counter-fighting the channel effect in very dense multipath environments. Data rate (number of pulses transmitted per bit) can be traded with power emission control and distance coverage. Very low power density leads to low probability of signal detection and adds security for all the layers of the communication stack. Very low power density is obtained through radio regulation emission masks; UWB systems are suitable for coexistence with already deployed narrow-band systems.
Book Synopsis Ultra Low Power Transceiver for Wireless Body Area Networks by : Jens Masuch
Download or read book Ultra Low Power Transceiver for Wireless Body Area Networks written by Jens Masuch and published by Springer Science & Business Media. This book was released on 2013-03-28 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Body Area Networks (WBANs) are expected to promote new applications for the ambulatory health monitoring of chronic patients and elderly population, aiming to improve their quality of life and independence. These networks are composed by wireless sensor nodes (WSNs) used for measuring physiological variables (e.g., glucose level in blood or body temperature) or controlling therapeutic devices (e.g., implanted insulin pumps). These nodes should exhibit a high degree of energy autonomy in order to extend their battery lifetime or even make the node supply to rely on harvesting techniques. Typically, the power budget of WSNs is dominated by the wireless link and, hence, many efforts have been directed during the last years toward the implementation of power efficient transceivers. Because of the short range (typically no more than a few meters) and low data rate (typically in between 10 kb/s and 1 Mb/s), simple communication protocols can be employed. One of these protocols, specifically tailored for WBAN applications, is the Bluetooth low energy (BLE) standard. This book describes the challenges and solutions for the design of ultra-low power transceivers for WBANs applications and presents the implementation details of a BLE transceiver prototype. Coverage includes not only the main concepts and architectures for achieving low power consumption, but also the details of the circuit design and its implementation in a standard CMOS technology.
Book Synopsis A Low Power Ultra Wideband Transceiver and Sensor Interface Architecture for Wireless Sensor Networks by : Karim Allidina
Download or read book A Low Power Ultra Wideband Transceiver and Sensor Interface Architecture for Wireless Sensor Networks written by Karim Allidina and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis focuses on the design of a low power ultra wideband (UWB) transceiver and a low power sensor interface architecture, both for use in wireless sensor networks.Pulse-based UWB radios communicate using short broadband pulses, which allow the transceiver to be duty cycled such that power is only consumed when a pulse is being transmitted or received. This enables increased power savings when compared to traditional narrowband transceivers. The receiver designed here is based on peak detection, and it is shown that this type of non-coherent receiver can perform better than a more complex energy detection receiver in interference dominated environments (such as urban areas) in both an additive white Gaussian noise channel, and a multipath environment.The fabricated UWB receiver uses a clock and data recovery system to synchronize the local receiver clock to the transmitted data to reduce synchronization time and enable more efficient communications for sensor networks, which typically have a small data payload. By moving the synchronization to the analog domain, the size and power consumption of the digital backend is reduced significantly when compared to other receiver architectures. The clock and data recovery synchronization scheme also provides real time tracking of any variations in the transmitted data rate and the receiver clock, which minimizes the need for a high precision crystal reference in either system. The fabricated UWB transmitter is implemented by exciting a pulse shaping filter with a broadband pulse, and the resulting signal conforms to the FCC spectral mask including the GPS stopband. The demonstrated transceiver system achieves a sensitivity of -66.5 dBm with a power consumption of ~400 [mu]W at a 1 Mbps data rate, making it suitable for wireless sensor networks and other low power, low data rate systems.An architecture for an energy efficient sensor interface for frequency domain sensors is also presented. The proposed system produces a digital output with inherent temperature compensation without the need for a high accuracy temperature sensor, a heater, or a temperature insensitive clock. This architecture is targeted towards systems where the emphasis is placed on battery longevity as opposed to high resolution sensing, such as in wireless sensor nodes." --
Book Synopsis Wideband FM Techniques for Low-Power Wireless Communications by : John F.M. Gerrits
Download or read book Wideband FM Techniques for Low-Power Wireless Communications written by John F.M. Gerrits and published by CRC Press. This book was released on 2022-09-01 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Wideband FM Techniques for Low-Power Wireless Communications by : John Gerrits
Download or read book Wideband FM Techniques for Low-Power Wireless Communications written by John Gerrits and published by River Publishers. This book was released on 2016-06-15 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Silicon-Based RF Front-Ends for Ultra Wideband Radios by : Aminghasem Safarian
Download or read book Silicon-Based RF Front-Ends for Ultra Wideband Radios written by Aminghasem Safarian and published by Springer Science & Business Media. This book was released on 2007-12-28 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Adaptive Uwb Impulse Radio Receiver by : Rohit Naik
Download or read book Adaptive Uwb Impulse Radio Receiver written by Rohit Naik and published by LAP Lambert Academic Publishing. This book was released on 2012-04 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the development of Ultra Wideband (UWB) technology, its standardisation, UWB pulse parameters, different UWB transceiver architectures and its applications. Wireless Sensor Networks (WSN) is one such application where UWB technology can be employed. The WSN applications demand portability and ultra low power consumption from its components. UWB impulse radio transceiver, which is one of the suitable architectures for WSNs, uses coherent reception and digital domain pulse correlation. The current UWB receiver uses significant hardware parallelism in the digital backend. The hardware parallelism ensures successful receiver operation in worst case channel conditions. However, it significantly increases the power consumption and deters the UWB receiver from being employed in the WSN. In UWB communication the channel conditions are not always worst and continuously vary with time and environment. This book proposes a novel real-time reconfigurability algorithm that estimates the channel conditions and effectively utilises the hardware resources by adapting the receiver to different channel conditions which considerably reduces average power consumption.
Book Synopsis Ultra-low-power UWB Impulse Radio Design by : Rajeev Kumar Dokania
Download or read book Ultra-low-power UWB Impulse Radio Design written by Rajeev Kumar Dokania and published by . This book was released on 2011 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in home healthcare, environmental sensing, and low power computing have created a need for wireless communication at very low power for low data rate applications. Due to higher energy/bit requirements at lower data -rate, achieving power levels low enough to enable long battery lifetime (~10 years) or power-harvesting supplies have not been possible with traditional approaches. Dutycycled radios have often been proposed in literature as a solution for such applications due to their ability to shut off the static power consumption at low data rates. While earlier radio nodes for such systems have been proposed based on a type of sleepwake scheduling, such implementations are still power hungry due to large synchronization uncertainty (~1[MICRO SIGN]s). In this dissertation, we utilize impulsive signaling and a pulse-coupled oscillator (PCO) based synchronization scheme to facilitate a globally synchronized wireless network. We have modeled this network over a widely varying parameter space and found that it is capable of reducing system cost as well as providing scalability in wireless sensor networks. Based on this scheme, we implemented an FCC compliant, 3-5GHz, timemultiplexed, dual-band UWB impulse radio transceiver, measured to consume only 20[MICRO SIGN]W when the nodes are synchronized for peer-peer communication. At the system level the design was measured to consume 86[MICRO SIGN]W of power, while facilitating multi- hop communication. Simple pulse-shaping circuitry ensures spectral efficiency, FCC compliance and ~30dB band-isolation. Similarly, the band-switchable, ~2ns turn-on receiver implements a non-coherent pulse detection scheme that facilitates low power consumption with -87dBm sensitivity at 100Kbps. Once synchronized the nodes exchange information while duty-cycling, and can use any type of high level network protocols utilized in packet based communication. For robust network performance, a localized synchronization detection scheme based on relative timing and statistics of the PCO firing and the timing pulses ("sync") is reported. No active hand-shaking is required for nodes to detect synchronization. A self-reinforcement scheme also helps maintain synchronization even in the presence of miss-detections. Finally we discuss unique ways to exploit properties of pulse coupled oscillator networks to realize novel low power event communication, prioritization, localization and immediate neighborhood validation for low power wireless sensor applications.
Book Synopsis Low-power Blocks for UWB Transceivers by : Joshua H. Kim
Download or read book Low-power Blocks for UWB Transceivers written by Joshua H. Kim and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, low-power blocks in UWB transceiver systems are presented. In particular, the main focus of this study is how low-power blocks in an impulse radio UWB (IR-UWB) system can be employed in sensor networks such as Body Area Networks (BANs). The thesis is divided into three general parts. In the first part, the general history, definitions, regulations, and development of UWB systems are reviewed. In addition, a brief explanation of the fundamental concepts of radio frequency communication in short duration of pulses is given. In the second part, the startup behavior of LC-VCOs used in UWB transmitters is investigated. In order to decrease the power consumption of the circuits without adding any complexity, we deliberately introduce a small asymmetry into the VCO that can greatly reduce the oscillation start-up time. Finally, we study the super-regenerative receiver architecture and the challenges it presents. In this work, we have designed a low-power 4 Mb/s super-regenerative receiver in a 0.18 ℗æm CMOS process that tracks the incoming signal carrier pulse and synchronizes it with a pulse quench signal. The energy consumption for this receiver is 0.17 nJ/bit, which demonstrates the lowest energy consumption reported so far for an IR-UWB receiver system.
Book Synopsis An Ultra-low-power 900MHz Radio Transmitter for Wireless Sensor Networks by : Alyosha C. Molnar
Download or read book An Ultra-low-power 900MHz Radio Transmitter for Wireless Sensor Networks written by Alyosha C. Molnar and published by . This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy-Efficient, Short-Range Ultra-Wideband Radio Transceivers by : Changhui Hu
Download or read book Energy-Efficient, Short-Range Ultra-Wideband Radio Transceivers written by Changhui Hu and published by LAP Lambert Academic Publishing. This book was released on 2011-10 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short-range wireless communications continually attract interest from both industry and academia, and it is changing our life in every aspect in the last decade. The design of wireless transceivers is the bottleneck for a variety applications, due to RF modeling inaccuracy, stringent FCC regulations over the transmitted power spectrum, interference, multi-path reections, modulation scheme, receiver sensitivity, and synchronization. In addition, energy efficiency is always one of the most important design goals. Ultra-Wideband(UWB) is found to be very energy-efficient due to its low duty cycle and potentially high data rate due to its wide bandwidth. However, there still remain unsolved issues with UWB transceivers, such as pulse shaping, multi-path re ections, and receiver clock synchronization. To address these, novel techniques such as wireless multi-path equaliza- tion, pulse injection-locking for receiver clock synchronization, reconfigurable pulse shaping, low power wireless clock distribution, and an ultra-low-power super- regenerative receiver are implemented and verified on silicon. Three chips are designed and verified: a 3-5GHz Impulse-Radio(IR) UWB transceiver, a 3-60GHz al
Book Synopsis Ultra Low Power Transmitters for Wireless Sensor Networks by : Yuen Hui Chee
Download or read book Ultra Low Power Transmitters for Wireless Sensor Networks written by Yuen Hui Chee and published by . This book was released on 2006 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Speed Data Converters for Ultra-wideband and Software Defined Radio Applications by : Islam T. Abougindia
Download or read book High Speed Data Converters for Ultra-wideband and Software Defined Radio Applications written by Islam T. Abougindia and published by . This book was released on 2014 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-wideband (UWB) communications and software defined radio (SDR) have been widely researched topics for the past several years. This is mainly because of the increased demand for robust, multi-purpose, and reconfigurable high data rate wireless communication systems with low energy consumption. Moreover, limited availability of RF spectrum bands for commercial use and variations of them from one country to another demand the wireless-capable devices to have greater re-configurability. Therefore, the communication systems of the future will not only have to allow multiple application usage, but also properly operate in a variety of environments with many other communication systems. Applications of these technologies range from short range battlefield military communication, interoperability of different radio signals, and wireless indoor data transfer and connectivity, to wireless sensor networks that require continuous data transmission. High-speed, medium resolution (5-8bits), and low-power analog-to-digital converters (ADCs) are essential components of most high data transfer rate communication systems. In UWB systems, as well as digital oscilloscopes, SDRs, and many other high speed communication applications, the speed and resolution of the ADC blocks limit communication systems from covering wide frequency bands. The intent of the work presented in this dissertation is to review and disclose the research findings on novel analog-to-digital converter structures designed for high-speed medium to high resolution, and re-configurable structures for UWB and SDR applications. The technical inquiry is divided into four research objectives. The first objective is to investigate fundamental principles, architectures, and transistor-circuit-system level limitations and design challenges of available state of the art ADC topologies for UWB and SDR applications. The second objective is to develop novel ADC topologies by utilizing asynchronous signal processing functionalities and by using hybrid structures to overcome the architecture level limits. The third objective is to study the main causes of high-speed ADC imperfections and develop novel correction techniques to achieve better performance. The fourth objective is to realize those novel ADC structures and the correction techniques on silicon and compare actual measurements with the simulation results as a proof of concept. The research outcomes include: (1) understanding the challenges of high-speed ADC design, (2) understanding the challenges in the design of flexible ADC architectures that can easily be re-configured between high data rate-medium resolution and low data rate-high resolution operations, (3) understanding the impact of circuits non-idealities on the overall ADC performance, and the different techniques used to reduce them, (4) developing novel and efficient techniques to correct for the top contributors of the circuits non-idealities, and (5) developing novel ADC architectures that can fulfill the requirements of UWB and SDR systems. The intellectual merits include: Two asynchronous time-interleaved (TI) type ADC architectures and a novel and efficient offset correction technique targeting set goals of the research are reported in this dissertation. The novel coarse-fine-calibration (CFC) offset correction technique was developed for increasing the accuracy of comparators used in ADCs while maintaining small area and power consumption for correction circuits. Major contributions of this research are: (1) design of a novel offset correction technique for dynamic latched comparators that are the key blocks in most ADC topologies to improve its sampling speed and the bit resolution, (2) design of a new asynchronous successive approximation register (ASAR) ADC in a time-interleaved structure, (3) design of a novel asynchronous two bit per stage, binary search ADC with indirect reference switching (ABS-IRS) in a time-interleaved structure, and (4) design, implementation, and testing of the three structures on silicon.
