Download or read book Studies on Selected Topics in Radio Frequency Digital to Analog Converters written by Mohammad Reza Sadeghifar and published by Linköping University Electronic Press. This book was released on 2019-10-14 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The network latency in fifth generation mobile technology (5G) will be around one millisecond which is much lower than in 4G technology. This significantly faster response time together with higher information capacity and ultra-reliable communication in 5G technology will pave the way for future innovations in a smart and connected society. This new 5G network should be built on a reasonable wireless infrastructure and 5G radio base-stations that can be vastly deployed. That is, while the electrical specification of a radio base-station in 5G should be met in order to have the network functioning, the size, weight and power consumption of the radio system should be optimized to be able to commercially deploy these radios in a huge network. As the number of antenna elements increases in massive multiple-input multiple-output based radios such as in 5G, designing true multi-band base-station radios, with efficient physical size, power consumption and cost in emerging cellular bands especially in mid-bands (frequencies up to 10~GHz), is becoming a challenge. This demands a hard integration of radio components; particularly the radio's digital application-specific integrated circuits (ASIC) with high-performance energy-efficient multi-band data converters. In this dissertation radio frequency digital-to-analog converter (RF DAC) and semi-digital finite-impulse response (FIR) filter digital-to-analog converter has been studied. Different techniques are used in these structures to improve the transmitter's overall performance. In the RF DAC part, a radio frequency digital-to-analog converter solution is presented, which is capable of monolithic integration into today's digital ASIC due to its digital-in-nature architecture, while fulfills the stringent requirements of cellular network radio base station linearity and bandwidth. A voltage-mode conversion method is used as output stage, and configurable mixing logic is employed in the data path to create a higher frequency lobe and utilize the output signal in the first or the second Nyquist zone and hence achieving output frequencies up to the sample rate. In the semi-digital FIR part, optimization problem formulation for semi-digital FIR digital-to-analog converter is investigated. Magnitude and energy metrics with variable coefficient precision are defined for cascaded digital Sigma-Delta modulators, semi-digital FIR filter, and Sinc roll-off frequency response of the DAC. A set of analog metrics as hardware cost is also defined to be included in semi-digital FIR DAC optimization problem formulation. It is shown that hardware cost of the semi-digital FIR DAC, can be reduced by introducing flexible coefficient precision in filter optimization while the semi-digital FIR DAC is not over-designed either. Different use cases are selected to demonstrate the optimization problem formulations. A combination of magnitude metric, energy metric, coefficient precision and analog metric are used in different use cases of the optimization problem formulation and solved to find out the optimum set of analog FIR taps. Moreover, a direct digital-to-RF converter (DRFC) is presented in this thesis where a semi-digital FIR topology utilizes voltage-mode RF DAC cells to synthesize spectrally clean signals at RF frequencies. Due to its digital-in-nature design, the DRFC benefits from technology scaling and can be monolithically integrated into advance digital VLSI systems. A fourth-order single-bit quantizer bandpass digital Sigma-Delta modulator is used preceding the DRFC, resulting in a high in-band signal-to-noise ratio (SNR). The out-of-band spectrally-shaped quantization noise is attenuated by an embedded semi-digital FIR filter. The RF output frequencies are synthesized by a configurable voltage-mode RF DAC solution with a high linearity performance. A compensation technique to cancel the code-dependent supply current variation in voltage-mode RF DAC for radio frequency direct digital frequency synthesizer is also presented in this dissertation and is studied analytically. The voltage-mode RF DAC and the compensation technique are mathematically modeled and system-level simulation is performed to support the analytical discussion.
Download or read book Radio Frequency Digital to Analog Converters written by Morteza S Alavi and published by Academic Press. This book was released on 2016-11-18 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the proliferation of wireless networks, there is a need for more compact, low-cost, power efficient transmitters that are capable of supporting the various communication standards, including Bluetooth, WLAN, GSM/EDGE, WCDMA and 4G of 3GPP cellular. This book describes a novel idea of RF digital-to-analog converters (RFDAC) and demonstrates how they can realize all-digital, fully-integrated RF transmitters that support all the current multi-mode and multi-band communication standards. With this book the reader will: Understand the challenges of realizing a universal CMOS RF transmitter Recognize the design issues and the advantages and disadvantages related to analog and digital transmitter architectures Master designing an RF transmitter from system level modeling techniques down to circuit designs and their related layout know-hows Grasp digital polar and I/Q calibration techniques as well as the digital predistortion approaches Learn how to generate appropriate digital I/Q baseband signals in order to apply them to the test chip and measure the RF-DAC performance. Highlights the benefits and implementation challenges of software-defined transmitters using CMOS technology Includes various types of analog and digital RF transmitter architectures for wireless applications Presents an all-digital polar RFDAC transmitter architecture and describes in detail its implementation Presents a new all-digital I/Q RFDAC transmitter architecture and its implementation Provides comprehensive design techniques from system level to circuit level Introduces several digital predistortion techniques which can be used in RF transmitters Describes the entire flow of system modeling, circuit simulation, layout techniques and the measurement process
Download or read book Selected Topics in RF Analog and Mixed Signal Circuits and Systems written by Kiran Gunnam and published by CRC Press. This book was released on 2022-09-01 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: CMOS process technology progress has led to a revolution towards new and innovative integrated circuits and systems. This trend is still moving forward for applications ranging from high-speed wireless and wireline data transfer down to ultra-low-power mobile applications for more interconnected world. The high performance analog and RF circuits and systems are at the heart of all these developments. Selected Topics in RF, Analog and Mixed Signal Circuits and Systems provides an overview and the state of the art developments on several selected topics in RF, analog and mixed signal circuits and system. The topics include ADC conversion and equalization for high-speed links, clock and data recovery for high speed wireline transmission with speeds in several Gb/s, signal generation for terahertz application, oscillator phase noise fundamentals and analog/digital PLL overview. Topics covered in the book include:Overview of Oscillator Phase NoiseClock and Data Recovery in High-Speed Wireline CommunicationPhase Lock Loop Design TechniquesTerahertz and mm-Wave Signal Generation, Synthesis and Amplification: Reaching the Fundamental LimitsEqualization and A/D conversion for high-speed links
Download or read book Selected Topics in Power RF and Mixed Signal ICs written by Yan Lu and published by CRC Press. This book was released on 2022-09-01 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by advanced CMOS technology, power management units, RF transceivers, and sensors, analog and mixed-signal circuits can now be fully integrated with VLSI digital systems for applications ranging from mobile, internet-of-things (IoT), wearable, and implantable medical devices. Evidently, the circuit- and system-level innovations have pushed the device performance boundaries to become orders of magnitude higher, whilst keeping the same or even lower power consumption.Selected Topic in Power, RF, and Mixed-Signal ICs provides a practical overview and state-of-the-art advancements on several selected topics in the areas of power, RF, and mixed-signal integrated circuits and systems.Topics covered in the book include:• Very-High-Frequency DC-DC Switching Converters• Analog and Digital Low-Dropout Regulators• Analog and Digital Sub-Sampling Frequency Synthesizers• Hybrid ADC Architecture with Digital Assisted Techniques• CMOS Image Sensors and Their Biomedical Applications• CMOS Temperature Sensors• CMOS Millimeter-Wave Power Amplifiers• Zigbee/BLE Transmitter for IoT Applications
Download or read book Advances in Analog and RF IC Design for Wireless Communication Systems written by Gabriele Manganaro and published by Academic Press. This book was released on 2013-05-13 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Analog and RF IC Design for Wireless Communication Systems gives technical introductions to the latest and most significant topics in the area of circuit design of analog/RF ICs for wireless communication systems, emphasizing wireless infrastructure rather than handsets. The book ranges from very high performance circuits for complex wireless infrastructure systems to selected highly integrated systems for handsets and mobile devices. Coverage includes power amplifiers, low-noise amplifiers, modulators, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), and even single-chip radios. This book offers a quick grasp of emerging research topics in RF integrated circuit design and their potential applications, with brief introductions to key topics followed by references to specialist papers for further reading. All of the chapters, compiled by editors well known in their field, have been authored by renowned experts in the subject. Each includes a complete introduction, followed by the relevant most significant and recent results on the topic at hand. This book gives researchers in industry and universities a quick grasp of the most important developments in analog and RF integrated circuit design. Emerging research topics in RF IC design and its potential application Case studies and practical implementation examples Covers fundamental building blocks of a cellular base station system and satellite infrastructure Insights from the experts on the design and the technology trade-offs, the challenges and open questions they often face References to specialist papers for further reading
Download or read book Analog Circuit Design written by Michiel Steyaert and published by Springer Science & Business Media. This book was released on 2002-01-31 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This tenth volume concentrates on three topics: scalable analogue circuits; high-speed D/A converters; and RF power amplifiers. Each topic is covered by six papers, written by an expert on that particular topic.
Download or read book Design of High speed Communication Circuits written by Ramesh Harjani and published by World Scientific. This book was released on 2006 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: MOS technology has rapidly become the de facto standard for mixed-signal integrated circuit design due to the high levels of integration possible as device geometries shrink to nanometer scales. The reduction in feature size means that the number of transistor and clock speeds have increased significantly. In fact, current day microprocessors contain hundreds of millions of transistors operating at multiple gigahertz. Furthermore, this reduction in feature size also has a significant impact on mixed-signal circuits. Due to the higher levels of integration, the majority of ASICs possesses some analog components. It has now become nearly mandatory to integrate both analog and digital circuits on the same substrate due to cost and power constraints. This book presents some of the newer problems and opportunities offered by the small device geometries and the high levels of integration that is now possible. The aim of this book is to summarize some of the most critical aspects of high-speed analog/RF communications circuits. Attention is focused on the impact of scaling, substrate noise, data converters, RF and wireless communication circuits and wireline communication circuits, including high-speed I/O. Contents: Achieving Analog Accuracy in Nanometer CMOS (M P Flynn et al.); Self-Induced Noise in Integrated Circuits (R Gharpurey & S Naraghi); High-Speed Oversampling Analog-to-Digital Converters (A Gharbiya et al.); Designing LC VCOs Using Capacitive Degeneration Techniques (B Jung & R Harjani); Fully Integrated Frequency Synthesizers: A Tutorial (S T Moon et al.); Recent Advances and Design Trends in CMOS Radio Frequency Integrated Circuits (D J Allstot et al.); Equalizers for High-Speed Serial Links (P K Hanumolu et al.); Low-Power, Parallel Interface with Continuous-Time Adaptive Passive Equalizer and Crosstalk Cancellation (C P Yue et al.). Readership: Technologists, scientists, and engineers in the field of high-speed communication circuits. It can also be used as a textbook for graduate and advanced undergraduate courses.
Download or read book Broadband Direct RF Digitization Receivers written by Olivier Jamin and published by Springer Science & Business Media. This book was released on 2013-09-06 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the trade-offs involved in designing direct RF digitization receivers for the radio frequency and digital signal processing domains. A system-level framework is developed, quantifying the relevant impairments of the signal processing chain, through a comprehensive system-level analysis. Special focus is given to noise analysis (thermal noise, quantization noise, saturation noise, signal-dependent noise), broadband non-linear distortion analysis, including the impact of the sampling strategy (low-pass, band-pass), analysis of time-interleaved ADC channel mismatches, sampling clock purity and digital channel selection. The system-level framework described is applied to the design of a cable multi-channel RF direct digitization receiver. An optimum RF signal conditioning, and some algorithms (automatic gain control loop, RF front-end amplitude equalization control loop) are used to relax the requirements of a 2.7GHz 11-bit ADC. A two-chip implementation is presented, using BiCMOS and 65nm CMOS processes, together with the block and system-level measurement results. Readers will benefit from the techniques presented, which are highly competitive, both in terms of cost and RF performance, while drastically reducing power consumption.
Download or read book Software Defined Radio written by Walter H.W. Tuttlebee and published by John Wiley & Sons. This book was released on 2003-04-11 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Software defined radio (SDR) is one of the most important topics of research, and indeed development, in the area of mobile and personal communications. SDR is viewed as an enabler of global roaming and as a unique platform for the rapid introduction of new services into existing live networks. It therefore promises mobile communication networks a major increase in flexibility and capability. SDR brings together two key technologies of the last decade - digital radio and downloadable software. It encompasses not only reconfiguration of the air interface parameters of handset and basestation products but also the whole mobile network, to facilitate the dynamic introduction of new functionality and mass-customised applications to the user's terminal, post-purchase. This edited book, contributed by internationally respected researchers and industry practitioners, describes the current technological status of radio frequency design, data conversion, reconfigurable signal processing hardware, and software issues at all levels of the protocol stack and network. The book provides a holistic treatment of SDR addressing the full breadth of relevant technologies - radio frequency design, signal processing and software - at all levels. As such it provides a solid grounding for a new generation of wireless engineers for whom radio design in future will assume dynamic flexibility as a given. In particular it explores * The unique demands of SDR upon the RF subsystem and their implications for front end design methodologies * The recent concepts of the 'digital front end' and 'parametrization' * The role and key influence of data conversion technologies and devices within software radio, essential to robust product design * The evolution of signal processing technologies, describing new architectural approaches * Requirements and options for software download * Advances in 'soft' protocols and 'on-the-fly' software reconfiguration * Management of terminal reconfiguration and its network implications * The concepts of the waveform description language The book also includes coverage of * Potential breakthrough technologies, such as superconducting RSFQ technology and the possible future role of MEMS in RF circuitry * Competing approaches, eg all-software radios implemented on commodity computing vs advanced processing architectures that dynamically optimise their configuration to match the algorithm requirements at a point in time The book opens with an introductory chapter by Stephen Blust, Chair of the ITU-R WP8F Committee and Chair of the SDR Forum presenting a framework for SDR, in terms of definitions, evolutionary perspectives, introductory timescales and regulation. Suitable for today's engineers, technical staff and researchers within the wireless industry, the book will also appeal to marketing and commercial managers who need to understand the basics and potential of the technology for future product development. Its balance of industrial and academic contributors also makes it suitable as a text for graduate and post-graduate courses aiming to prepare the next generation of wireless engineers.
Download or read book Direct Conversion Receivers in Wide Band Systems written by Aarno Pärssinen and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on my doctoral thesis at the Helsinki University of Technology. Several different projects during five years guided me from the basics of the RF IC design to the implementations of highly integrated radio receiver chips. Sharing time and effort between IC and system issues is not always straightforward. I have been lucky to follow both topics and share experiences with diligent and enthusiastic people having different specialities. As a result, this book will cover a wide range of different topics needed in the design of highly integrated radio receivers. Experiences from the first receiver prototypes for the third generation cellular systems form the basis of this book. Most of the issues are directly related to the early proposals of European and Japanese standardization organizations. For example, the chip rate was originally set to 4. 096 Mcps in a wide-band CDMA channel. I have kept that number in the book in most of the examples although it has been later changed to 3. 84 Mcps. I hope that the readers will accept that and the possible other incompabilities to the latest specifications. At least in the research phase the changes even in the most essential requirements are definitely not a rare incident and IC designers should be able to react and modify their designs as soon as they can.
Download or read book Signal Digitization and Reconstruction in Digital Radios written by Yefim Poberezhskiy and published by Artech House. This book was released on 2018-12-31 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive resource provides the latest information on digitization and reconstruction (D&R) of analog signals in digital radios. Readers learn how to conduct comprehensive analysis, concisely describe the major signal processing procedures carried out in the radios, and demonstrate the dependence of these procedures on the quality of D&R. The book presents and analyzes the most promising and theoretically sound ways to improve the characteristics of D&R circuits and illustrate the influence of these improvements on the capabilities of digital radios. The book is intended to bridge the gap that exists between theorists and practical engineers developing D&R techniques by introducing new signal transmission and reception methods that can effectively utilize the unique capabilities offered by novel digitization and reconstruction techniques.
Download or read book Advances in Solid State Circuit Technologies written by Paul Chu and published by BoD – Books on Demand. This book was released on 2010-04-01 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together contributions from experts in the fields to describe the current status of important topics in solid-state circuit technologies. It consists of 20 chapters which are grouped under the following categories: general information, circuits and devices, materials, and characterization techniques. These chapters have been written by renowned experts in the respective fields making this book valuable to the integrated circuits and materials science communities. It is intended for a diverse readership including electrical engineers and material scientists in the industry and academic institutions. Readers will be able to familiarize themselves with the latest technologies in the various fields.
Download or read book Single and Multi Chip Microcontroller Interfacing written by G. Jack Lipovski and published by Elsevier. This book was released on 1999-04-27 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single and Multi-Chip Microcontroller Interfacing teaches the principles of designing and programming microcontrollers that will be used in a wide variety of electronic and mechanical devices, machines and systems. Applications are wide, ranging from controlling an automobile to measuring, controlling and displaying your home's temperature. The book utilizes the new Motorola 68Hc12 microcontroller as the primary example throughout. This new microprocessor is the latest development in mid-level 16-bit microcontrollers that will be used world wide due to its low cost and ease of programming. The book features the most popular programming languages--C and C++--in describing basic and advanced techniques. The 68Hc12 will replace many of the existing 8-bit microprocessors currently used in applications and teaching. First book available on the new Motorola 68HC12 microcontroller Thorough discussion of C and C++ programming of I/O ports and synchronization mechanisms Concrete discussion of applications of the popular, readily available, inexpensive and well-designed 68HC12 Many examples and over 200 problems at the end of each chapters Separate sections describing object-oriented interfacing This book is ideal for professional engineers as well as students in university courses in micro-processors/microcontrollers in departments of electrical engineering, computer engineering or computer science; It is also appropriate for advanced technical school courses. The book will also be a valuable professional reference for electrical engineers and mechanical engineers in industry working with the design of electronic and electromechanical devices and systems
Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 1600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Curriculum Handbook with General Information Concerning for the United States Air Force Academy written by United States Air Force Academy and published by . This book was released on 1995 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Horizons in Mobile and Wireless Communications Volume 1 written by Albena Mihovska and published by Artech House. This book was released on 2009 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on cutting-edge research projects in the field, this book (part of a comprehensive 4-volume series) provides the latest details and covers the most impactful aspects of mobile, wireless, and broadband communications development. These books present key systems and enabling technologies in a clear and accessible manner, offering you a detailed roadmap the future evolution of next generation communications. Other volumes cover Networks, Services and Applications; Reconfigurability; and Ad Hoc Networks.
Download or read book Radio Frequency Integrated Circuits and Systems written by Hooman Darabi and published by Cambridge University Press. This book was released on 2020-03-12 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated and expanded new edition equips students with a thorough understanding of the state-of-the-art in radio frequency (RF) design and the practical knowledge and skills needed in industry. Introductory and advanced topics are covered in-depth, with clear step-by-step explanations, including core topics such as RF components, signals and systems, two-ports, noise, distortion, low-noise amplifiers, power amplifiers, and transceiver architectures. New material has been added on wave propagation, skin effect, antennas, mixers and oscillators, and digital PAs and transmitters. Two new chapters detail the analysis and design of RF and IF filters (including SAW and FBAR duplexers and N-path filters), phase-locked loops, frequency synthesizers, digital PLLs, and frequency dividers. Theory is linked to practice through real-world applications, practical design examples, and exploration of the pros and cons of various topologies. Over 250 homework problems are included, with solutions and lecture slides for instructors available online. With its uniquely practical and intuitive approach, this is an essential text for graduate courses on RFICs and a useful reference for practicing engineers.
