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Energy Efficient Wireless Transmitters
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Book Synopsis Energy-efficient Wireless Transmitter Architecture for Mobile Multimedia by : SungWon Chung (Ph. D.)
Download or read book Energy-efficient Wireless Transmitter Architecture for Mobile Multimedia written by SungWon Chung (Ph. D.) and published by . This book was released on 2014 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued improvement of transistor performance has increased the limit on the peak energy-efficiency of wireless transmitters. Nevertheless, the average efficiency with mobile multimedia communication is decreasing due to escalating design requirements on linearity and bandwidth. Therefore there is an increasing gap between the peak and average efficiency. Furthermore, the nature of user mobility mandates reliability over environmental changes and device aging. To address these two pervasive issues of efficiency and reliability, we pursue solutions at both the architectural and algorithmic level. This thesis proposes energy-efficient wireless transmitter architectures that also improve transmitter reliability. First, mobile adaptive predistortion to improve transmitter reliability is presented. Second, parallel segmented modulation (PSM) to improve average efficiency is introduced. A prototype PSM transmitter chip for gigabit Wi-Fi (IEEE 802.11ac VHT160 standard) is designed, which integrates a watt-level switching RF power amplifier and a subsampling observation receiver for low-power adaptive predistortion.
Book Synopsis Energy Efficient Wireless Transmitters by : Jason Thaine Stauth
Download or read book Energy Efficient Wireless Transmitters written by Jason Thaine Stauth and published by . This book was released on 2008 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An ENERGY-EFFICIENT, HIGH SPEED CLASS-E TRANSMITTER FOR BATTERY-FREE WIRELESS SENSOR NETWORKS. by : Zina Saheb
Download or read book An ENERGY-EFFICIENT, HIGH SPEED CLASS-E TRANSMITTER FOR BATTERY-FREE WIRELESS SENSOR NETWORKS. written by Zina Saheb and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy efficiency and power consumption are increasingly important in wireless communications and especially for wireless sensor networks (WSNs). The limited energy budget in a WSN imposes many constraints on the transmitter side and limits WSN performance especially with the increasing demand for a high data rate in biomedical and imaging applications. In this dissertation, an energy-efficient, high data rate, quadrature phase shift keying (QPSK) class-E transmitter is developed. This transmitter is a promising alternative to conventional phase shift keying (PSK) and direct modulation transmitters. This prototype is fully integrated in CMOS 65 nm technology and has an optimized power consumption and output power to achieve good efficiency and a high data rate. The prototype transmitter employs a class-E power oscillator along with system and circuit level design methodology to maximize the efficiency. The power oscillator is a self-oscillating power amplifier that utilizes a positive feedback system. An efficient new technique for phase modulation (PM) that achieves the 360o phase shift without the need for an additional circuit is presented. The transmitter operates at 2.4 GHz with a data rate of 69 Mbps and transmitting power of -6.8 dBm with achieved energy/bit of 42 pJ/bit and 2.9 mW power consumption. The transmitter's global efficiency is between 7.7% to 23% under a 0.4 V power supply. The first class-E power oscillator is tunable between 1.9 and 3.3 GHz. It is robust to ∓20% frequency deviation due to PVT variations. The second power oscillator is designed to be suitable for more area-efficient applications to reduce the fabrication cost. It achieves a peak output power of −0.5 dBm and a peak efficiency of 37.5% under a 0.4 V power supply and frequency tuning range of 1.66-2.7 GHz. This oscillator is robust to ∓15% frequency deviation from a 2.4 GHz nominal frequency. Towards the implementation of a battery-free WSN, an autonomous and reconfigurable triple band energy harvester, capable of performing high RF power tracking to maximize the harvested DC power and enhance efficiency, is developed. The harvester has the potential of being deployed along with remote sensor nodes to enhance the nodes' operational life-time. A peak PCEs of 57%, 43% and 33% are achieved at 2.4 GHz, 900 MHz and 1.2 GHz respectively. 30% and 10% increments in the harvested voltage at 900 MHz and 1.2 GHz with a sensitivity of -19 dBm are achieved. This work emphasizes techniques to improve the energy efficiency of WSN transmitters towards the next generation of WSN. It is anticipated that these solutions will shape future work towards solving many challenging research problems in WSNs.
Book Synopsis Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters by : Karun Rawat
Download or read book Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters written by Karun Rawat and published by Springer. This book was released on 2021-03-06 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on broadband power amplifier design for wireless communication. Nonlinear model embedding is described as a powerful tool for designing broadband continuous Class-J and continuous class F power amplifiers. The authors also discuss various techniques for extending bandwidth of load modulation based power amplifiers, such as Doherty power amplifier and Chireix outphasing amplifiers. The book also covers recent trends on digital as well as analog techniques to enhance bandwidth and linearity in wireless transmitters. Presents latest trends in designing broadband power amplifiers; Covers latest techniques for using nonlinear model embedding in designing power amplifiers based on waveform engineering; Describes the latest techniques for extending bandwidth of load modulation based power amplifiers such as Doherty power amplifier and Chireix outphasing amplifiers; Includes coverage of hybrid analog/digital predistortion as wideband solution for wireless transmitters; Discusses recent trends on on-chip power amplifier design with GaN /GaAs MMICs for high frequency applications.
Book Synopsis Energy-Efficient Wireless Sensor Networks by : Vidushi Sharma
Download or read book Energy-Efficient Wireless Sensor Networks written by Vidushi Sharma and published by CRC Press. This book was released on 2017-07-28 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advances in low-power electronic devices integrated with wireless communication capabilities are one of recent areas of research in the field of Wireless Sensor Networks (WSNs). One of the major challenges in WSNs is uniform and least energy dissipation while increasing the lifetime of the network. This is the first book that introduces the energy efficient wireless sensor network techniques and protocols. The text covers the theoretical as well as the practical requirements to conduct and trigger new experiments and project ideas. The advanced techniques will help in industrial problem solving for energy-hungry wireless sensor network applications.
Book Synopsis Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters by : Karun Rawat
Download or read book Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters written by Karun Rawat and published by Springer Nature. This book was released on 2020-03-05 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on broadband power amplifier design for wireless communication. Nonlinear model embedding is described as a powerful tool for designing broadband continuous Class-J and continuous class F power amplifiers. The authors also discuss various techniques for extending bandwidth of load modulation based power amplifiers, such as Doherty power amplifier and Chireix outphasing amplifiers. The book also covers recent trends on digital as well as analog techniques to enhance bandwidth and linearity in wireless transmitters. Presents latest trends in designing broadband power amplifiers; Covers latest techniques for using nonlinear model embedding in designing power amplifiers based on waveform engineering; Describes the latest techniques for extending bandwidth of load modulation based power amplifiers such as Doherty power amplifier and Chireix outphasing amplifiers; Includes coverage of hybrid analog/digital predistortion as wideband solution for wireless transmitters; Discusses recent trends on on-chip power amplifier design with GaN /GaAs MMICs for high frequency applications.
Book Synopsis Design of Low-power and Energy-efficient Wireless RF Transmitters Using Phase-switching Technique by : 陳立廣
Download or read book Design of Low-power and Energy-efficient Wireless RF Transmitters Using Phase-switching Technique written by 陳立廣 and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Efficiency Load Modulation Power Amplifiers for Wireless Communications by : Zhancang Wang
Download or read book High-Efficiency Load Modulation Power Amplifiers for Wireless Communications written by Zhancang Wang and published by Artech House. This book was released on 2017-06-30 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This cutting-edge resource presents a complete and systematic overview of the practical design considerations of radio frequency (RF) high efficiency load modulation power amplifiers (PA) for modern wireless communications for 4G and beyond. It provides comprehensive insight into all aspects of load modulation PA design and optimization not only covering design approaches specifically for passive and active load modulation operation but also hybrid with dynamic supply modulation and digital signal processing algorithms required for performance enhancement. Passive load impedance tuner design, dynamic load modulation PA, active load modulation PA and Doherty PA design for efficiently enhancement are explained. Readers find practical guidance into load modulation PA design for bandwidth extension, including video bandwidth enhancement techniques, broadband dynamic load amplifiers, topology selection, design procedures, and network output. This book presents the evolution and integration of classical load modulation PA topologies in order to meet new challenges in the field.
Book Synopsis Energy and Bandwidth-Efficient Wireless Transmission by : Wei Gao
Download or read book Energy and Bandwidth-Efficient Wireless Transmission written by Wei Gao and published by Springer. This book was released on 2017-02-10 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces key modulation and predistortion techniques for approaching power and spectrum-efficient transmission for wireless communication systems. The book presents a combination of theoretical principles, practical implementations, and actual tests. It focuses on power and spectrally efficient modulation and transmission techniques in the portable wireless communication systems, and introduces currently developed and designed RF transceivers in the latest wireless markets. Most materials, design examples, and design strategies used are based on the author’s two decades of work in the digital communication fields, especially in the areas of the digital modulations, demodulations, digital signal processing, and linearization of power amplifiers. The applications of these practical products and equipment cover the satellite communications on earth station systems, microwave communication systems, 2G GSM and 3G WCDMA mobile communication systems, and 802.11 WLAN systems.>
Author :Foad Arfaei Malekzadeh Publisher :Springer Science & Business Media ISBN 13 :1461442176 Total Pages :155 pages Book Rating :4.4/5 (614 download)
Book Synopsis Analog Dithering Techniques for Wireless Transmitters by : Foad Arfaei Malekzadeh
Download or read book Analog Dithering Techniques for Wireless Transmitters written by Foad Arfaei Malekzadeh and published by Springer Science & Business Media. This book was released on 2012-08-27 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes innovative techniques and the theoretical background for design and analysis of high performance RF/Microwave transmitters. It introduces new, robust linearization/efficiency enhancement techniques, applicable to all of the switched mode power amplifiers. Novel analysis methods associated with these new techniques are also introduced and supporting measurement results are documented. Innovative graphical representation methods are used to help the reader understand the matter intuitively. Applications for the techniques discussed are very extensive, ranging from data convertors to RF/Microwave/mm-wave wireless/wire line transmitters. The authors have avoided using lengthy formulas in the discussion and have used an intuitive and simple approach to go through the necessary details. Readers will gain valuable understanding of the dither phenomenon, its mechanism, effect and undesired side effects. The novel architectures introduced are simple, don’t require complicated DSP techniques and are easy to implement.
Book Synopsis Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links by : David del Rio
Download or read book Digitally Assisted, Fully Integrated, Wideband Transmitters for High-Speed Millimeter-Wave Wireless Communication Links written by David del Rio and published by Springer. This book was released on 2018-07-07 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents design methods and considerations for digitally-assisted wideband millimeter-wave transmitters. It addresses comprehensively both RF design and digital implementation simultaneously, in order to design energy- and cost-efficient high-performance transmitters for mm-wave high-speed communications. It covers the complete design flow, from link budget assessment to the transistor-level design of different RF front-end blocks, such as mixers and power amplifiers, presenting different alternatives and discussing the existing trade-offs. The authors also analyze the effect of the imperfections of these blocks in the overall performance, while describing techniques to correct and compensate for them digitally. Well-known techniques are revisited, and some new ones are described, giving examples of their applications and proving them in real integrated circuits.
Book Synopsis Analog Dithering Techniques for Wireless Transmitters by : Foad Arfaei Malekzadeh
Download or read book Analog Dithering Techniques for Wireless Transmitters written by Foad Arfaei Malekzadeh and published by Springer. This book was released on 2012-08-27 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes innovative techniques and the theoretical background for design and analysis of high performance RF/Microwave transmitters. It introduces new, robust linearization/efficiency enhancement techniques, applicable to all of the switched mode power amplifiers. Novel analysis methods associated with these new techniques are also introduced and supporting measurement results are documented. Innovative graphical representation methods are used to help the reader understand the matter intuitively. Applications for the techniques discussed are very extensive, ranging from data convertors to RF/Microwave/mm-wave wireless/wire line transmitters. The authors have avoided using lengthy formulas in the discussion and have used an intuitive and simple approach to go through the necessary details. Readers will gain valuable understanding of the dither phenomenon, its mechanism, effect and undesired side effects. The novel architectures introduced are simple, don’t require complicated DSP techniques and are easy to implement.
Book Synopsis Multiband RF Circuits and Techniques for Wireless Transmitters by : Wenhua Chen
Download or read book Multiband RF Circuits and Techniques for Wireless Transmitters written by Wenhua Chen and published by Springer. This book was released on 2016-06-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces systematic design methods for passive and active RF circuits and techniques, including state-of-the-art digital enhancement techniques. As the very first book dedicated to multiband RF circuits and techniques, this work provides an overview of the evolution of transmitter architecture and discusses current digital predistortion techniques. Readers will find a collection of novel research ideas and new architectures in concurrent multiband power dividers, power amplifiers and related digital enhancement techniques. This book will be of great interest to academic researchers, R&D engineers, wireless transmitter and protocol designers, as well as graduate students who wish to learn the core architectures, principles and methods of multiband RF circuits and techniques.
Book Synopsis Dynamic Power Supply Transmitters by : Earl McCune
Download or read book Dynamic Power Supply Transmitters written by Earl McCune and published by Cambridge University Press. This book was released on 2015-05-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Power is dissipated (lost) when this current flows through any resistance, which includes the amplifier's transistor. This dissipated power is the product of the current in the load times the voltage difference between the supply voltage to the amplifier and the output signal voltage. When the voltage supplied to the amplifier is a constant value, and by far the most common design practice, the situation in Fig. 1-2a results. Power dissipation in the amplifier is maximum when the output signal voltage is 1/2 of the supply voltage. When the output signal voltage is higher, even though the current value is larger the voltage drop is less and the power dissipation is lower. Similarly, when the output signal voltage is small, even though the voltage drop is now large the current in the load is smaller and again the power dissipation is lower"--
Book Synopsis Energy Efficient Transmitter Design with Compact Antenna for Future Wireless Communication Systems by : Lin Zhou
Download or read book Energy Efficient Transmitter Design with Compact Antenna for Future Wireless Communication Systems written by Lin Zhou and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wireless Transceiver Circuits by : Woogeun Rhee
Download or read book Wireless Transceiver Circuits written by Woogeun Rhee and published by CRC Press. This book was released on 2018-09-03 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern transceiver systems require diversified design aspects as various radio and sensor applications have emerged. Choosing the right architecture and understanding interference and linearity issues are important for multi-standard cellular transceivers and software-defined radios. A millimeter-wave complementary metal–oxide–semiconductor (CMOS) transceiver design for multi-Gb/s data transmission is another challenging area. Energy-efficient short-range radios for body area networks and sensor networks have recently received great attention. To meet different design requirements, gaining good system perspectives is important. Wireless Transceiver Circuits: System Perspectives and Design Aspects offers an in-depth look at integrated circuit (IC) design for modern transceiver circuits and wireless systems. Ranging in scope from system perspectives to practical circuit design for emerging wireless applications, this cutting-edge book: Provides system design considerations in modern transceiver design Covers both systems and circuits for the millimeter-wave transceiver design Introduces four energy-efficient short-range radios for biomedical and wireless connectivity applications Emphasizes key building blocks in modern transceivers and transmitters, including frequency synthesizers and digital-intensive phase modulators Featuring contributions from renowned international experts in industry and academia, Wireless Transceiver Circuits: System Perspectives and Design Aspects makes an ideal reference for engineers and researchers in the area of wireless systems and circuits.
Book Synopsis Dynamic Power Supply Design for High-efficiency Wireless Transmitters by : Jason T. Stauth
Download or read book Dynamic Power Supply Design for High-efficiency Wireless Transmitters written by Jason T. Stauth and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
