Download or read book Reconfigurable Dual mode Voltage controlled Oscillator and Wideband Frequency Synthesizer for Millimeter wave Applications written by Cheng-Hsien Hung and published by . This book was released on 2015 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demands for high data-rate communications and high-precision sensing applications have pushed wireless systems towards higher operating frequencies where wider bandwidth is available. Examples of such applications include 60 GHz indoor communications and vehicular RADAR around 77 GHz. High-speed frequency synthesizers integrated in a CMOS process, with wide operating bandwidth, and low phase noise are key to low-cost transceiver implementations for such applications. The requirement to operate over a wide span of carrier frequencies arises from two key sources. The system itself often requires a wide tuning range, in excess of 5-10% of the carrier frequency. Further, it is necessary to compensate for the uncertainty in operating frequencies, caused by process and temperature variations. This dissertation introduces a dual-mode voltage-controlled oscillator (VCO) topology, embedded in a frequency synthesizer, for wideband operation. The VCO can operate in two oscillation modes by reconfiguring the active negative resistance core around the LC tank that is employed as the resonator element in the oscillator. A key aspect to the design is that the switches used for mode reconfiguration do not contribute to the tank loss. The frequency spacing of the two modes is determined by an accurate inductor ratio. It is demonstrated through analysis that in order to ensure mode-switching, the size of the switches needs be larger than a critical value, which is a function of the electrical properties of the cross-coupled, negative resistance core, as well as the resonator used in the design. The impact of noise injection and mismatch on switching behavior is also analyzed. The VCO topology has been implemented in a 65nm CMOS process. The design demonstrates measured tuning ranges of 56.9 GHz to 65.4 GHz, and 64.6 GHz to 75.3 GHz, in the two respective modes, for a total effective tuning range of 28%. The oscillator consumes 13 mW, with a 1 V-supply, and its Figure of Merit with tuning range (FOM[subscript T]) is -177.2 dB. An integer-N frequency synthesizer that employs the dual-mode VCO, has also been designed and verified in a 65 nm CMOS process. The synthesizer has a locking range from 56 GHz to 63.9 GHz in its low frequency mode. The total power consumption of the synthesizer, including output buffers, is approximately 50 mW. The in-band phase noise, at a locked frequency of 63.04 GHz, is -88.4 dBc/Hz at 1 MHz offset.

Download or read book A Dual mode Wide band CMOS Oscillator for Millimeter wave Applications written by Shatam Agarwal and published by . This book was released on 2010 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Broadband voltage-controlled oscillators are critical to the design of millimeter wave frequency synthesizers. This thesis proposes a design technique that can be used to significantly extend the achievable frequency span of an oscillator. A dual-band oscillator topology is described that can be configured to operate in one of two modes, by an electrical reconfiguration of the negative resistance core around the resonant tank, without switching passive elements within the tank itself. The configuration helps to minimize the difference in phase noise performance between the two modes, while achieving a wide tuning range. To verify the concept, a mm-wave VCO that operates at 30-GHz is designed in a commercial 0.18-um CMOS technology, with an approximate simulated tuning range of 20%. A dual-mode oscillator is also designed in a 0.13-um technology at 60-GHz.

Download or read book Application of Dual Mode Wide Band CMOS Oscillators written by Abdolhossein Ayoubi and published by CreateSpace. This book was released on 2015-07-21 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Broadband voltage-controlled oscillators are critical to the design of millimeter wave frequency synthesizers. This book proposes a design technique that can be used to significantly extend the achievable frequency span of an oscillator. A dual-band oscillator topology is described that can be configured to operate in one of two modes, by an electrical reconfiguration of the negative resistance core around the resonant tank, without switching passive elements within the tank itself. The configuration helps to minimize the difference in phase noise performance between the two modes, while achieving a wide tuning range. This book includes five chapters and through these chapters the necessary information for designing millimeter wave frequency synthesizers are provided for the readers.

Download or read book A Dual Mode Wide Band Cmos Oscillator written by Shatam Agarwal and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Broadband voltage-controlled oscillators are critical to the design of millimeter-wave (mm-wave) frequency synthesizers. This thesis proposes a design technique that can be used to significantly extend the achievable frequency span of an oscillator. A dual-band oscillator topology is described that can be configured to operate in one of two modes, by an electrical reconfiguration of the negative resistance core around the resonant tank, without switching passive elements within the tank itself. The configuration helps to minimize the difference in phase noise performance between the two modes, while achieving a wide tuning range. To verify the concept, an mm-wave VCO that operates at 30 GHz is designed in a commercial 0.18-um CMOS technology, with an approximate simulated tuning range of 20%. A dual-mode oscillator is also designed in 0.13-um CMOS technology at 60 GHz.

Download or read book Microwave and Wireless Synthesizers written by Ulrich L. Rohde and published by John Wiley & Sons. This book was released on 2021-03-29 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of the leading resource on designing digital frequency synthesizers from microwave and wireless applications, fully updated to reflect the most modern integrated circuits and semiconductors Microwave and Wireless Synthesizers: Theory and Design, Second Edition, remains the standard text on the subject by providing complete and up-to-date coverage of both practical and theoretical aspects of modern frequency synthesizers and their components. Featuring contributions from leading experts in the field, this classic volume describes loop fundamentals, noise and spurious responses, special loops, loop components, multiloop synthesizers, and more. Practical synthesizer examples illustrate the design of a high-performance hybrid synthesizer and performance measurement techniques—offering readers clear instruction on the various design steps and design rules. The second edition includes extensively revised content throughout, including a modern approach to dealing with the noise and spurious response of loops and updated material on digital signal processing and architectures. Reflecting today’s technology, new practical and validated examples cover a combination of analog and digital synthesizers and hybrid systems. Enhanced and expanded chapters discuss implementations of direct digital synthesis (DDS) architectures, the voltage-controlled oscillator (VCO), crystal and other high-Q based oscillators, arbitrary waveform generation, vector signal generation, and other current tools and techniques. Now requiring no additional literature to be useful, this comprehensive, one-stop resource: Provides a fully reviewed, updated, and enhanced presentation of microwave and wireless synthesizers Presents a clear mathematical method for designing oscillators for best noise performance at both RF and microwave frequencies Contains new illustrations, figures, diagrams, and examples Includes extensive appendices to aid in calculating phase noise in free-running oscillators, designing VHF and UHF oscillators with CAD software, using state-of-the-art synthesizer chips, and generating millimeter wave frequencies using the delay line principle Containing numerous designs of proven circuits and more than 500 relevant citations from scientific journal and papers, Microwave and Wireless Synthesizers: Theory and Design, Second Edition, is a must-have reference for engineers working in the field of radio communication, and the perfect textbook for advanced electri

Download or read book Integrated RF CMOS Frequency Synthesizers and Oscillators for Wireless Applications written by Adem Aktas and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: PLL (Phase-Locked Loop) frequency synthesizers are used in wireless transceivers for frequency conversion. Recent directions in PLL frequency synthesizer research and development are to fully integrate PLL synthesizers in CMOS technology, to improve phase noise performance, and to operate wide range of frequency bands and channel bandwidths. Fully integration of synthesizers in CMOS technology is desired for low cost, low power consumption and small size in mobile wireless terminals. Low phase noise is required by digital modulation techniques which have been used in new mobile standards for the efficient use of the frequency spectrum. Operation over a wide range of frequency bands and channel bandwidths are required to support migration and backward compatibility in the wireless standard evolution. This work investigates the PLL frequency synthesizer design and implementation in CMOS technology with focus on integration of wideband VCOs (Voltage-Controlled Oscillators). Phase noise of a PLL synthesizer is a major design parameter. A PLL noise model is developed for noise optimization purposes. Wideband RF VCO design with sub-bands is investigated. Frequency planning, synthesizer architecture and technology considerations are also explored for wideband VCO design. Band switching techniques VCO tuning range presented. Active VCO circuit topologies and resonator design are also presented. The PLL frequency synthesizers are designed and implemented for a multi-band/standard(IEEE 802.11a/b/g) WLAN radio in 0.18um CMOS. Phase noise trade-offs for PLL design are explored in this application. Development and design of a wideband VCO for this application is also presented. An auto calibration circuit is developed for VCO tuning band selection. Another application of the wideband PLL frequency synthesizer is designed and implemented for a fully integrated dual-mode frequency synthesizer for GSM and WCDMA standards in 0.5um CMOS. A hybrid integer-N/fractional-N architecture is developed to meet the multi-standard requirements. Design and implementation of high performance RF VCO depends on the RF models of the devices. RF CMOS characterization and modeling techniques are explored. Microwave wafer measurement and calibration techniques are also investigated for CMOS technology.

Download or read book Microwave and Wireless Synthesizers written by Ulrich L. Rohde and published by John Wiley & Sons. This book was released on 1997-08-25 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, great strides have been made in the technology of microwave oscillators and synthesizers, with digital frequency synthesizers in particular attracting much attention. These synthesizers are now being used in virtually all modern signal generators and radio communication equipment. Until now, however, detailed information about their design has been hard to come by-much of it scattered through journal articles-and most books on the subject have taken a primarily theoretical approach. Enter Microwave and Wireless Synthesizers-the first book to emphasize both practical circuit information from RF to millimeter-wave frequencies and up-to-date theory. Based on course material taught by author Ulrich L. Rohde at George Washington University and recent work done by the author at Compact Software, Inc. and Synergy Microwave Corporation, this volume is a complete revision and update of Rohde's landmark text, Digital PLL Frequency Synthesizers: Theory and Design. While it provides all the necessary theory and formulas, it also offers an in-depth look at the practical side of the phase-lock loop (PLL) in synthesizers-including special loops, loop components, and practical circuits-material that is not available in any other book. Rohde explains loop fundamentals, demonstrates the linear approach to oscillator phase noise, discusses the digital direct synthesizer technique, addresses low noise oscillator design, and provides insight into the role and design of crystal oscillators, mixers, phase/frequency discriminators, wideband high-gain amplifiers, programmable dividers, and loop filters. He goes on to cover conventional multiloop synthesizers and survey existing state-of-the-art microwave synthesizer applications. Extensive appendices review the mathematics of useful functions and various applications, including even the complex nonlinear theory of noise in large signal systems such as mixers and oscillators. Microwave and Wireless Synthesizers allows anyone with a PC running either Windows 3.11 or Windows NT to explore real-world design. It uses programs for the solution of digital phase-lock loop systems, tabulates the results, and shows how Bode diagrams are determined by the computer's graphic capabilities. It also includes examples using commercially available linear and nonlinear CAD programs to provide accurate evaluation and optimization of oscillators and other useful circuits and many practical charts. For companies involved in test and communication equipment, this book reduces design and research costs by providing a large number of proven circuits and expediting the design process. It is also an outstanding senior/graduate level textbook for electrical engineering students and an invaluable resource for practicing engineers, senior engineers, and managers who would like to be able to evaluate new trends and techniques in the field.

Download or read book Old Boys and Girls Re union Strathroy August 2 3 4 5 6 1919 written by and published by . This book was released on 1919 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Voltage Controlled Oscillator and Frequency Synthesizer for W Band Applications written by and published by . This book was released on 2021 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design of Modern Microwave Oscillators for Wireless Applications written by Ulrich L. Rohde and published by John Wiley & Sons. This book was released on 2005-05-27 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delivering the best possible solution for phase noise and outputpower efficiency in oscillators This complete and thorough analysis of microwave oscillatorsinvestigates all aspects of design, with particular emphasis onoperating conditions, choice of resonators and transistors, phasenoise, and output power. It covers both bipolar transistors andFETs. Following the authors' guidance, readers learn how to designmicrowave oscillators and VCOs that can be tuned over a very widefrequency range, yet have good phase noise, are low cost, and aresmall in size. All the essential topics in oscillator design anddevelopment are covered, including: * Device and resonator technology * Study of noise sources * Analysis methods * Design, calculation, and optimization methodologies * Practical design of single and coupled oscillators While most of the current literature in the field concentrates onclassic design strategies based on measurements, simulation, andoptimization of output power and phase noise, this text offers aunique approach that focuses on the complete understanding of thedesign process. The material demonstrates important design rulesstarting with the selection of best oscillator topology, choice oftransistors, and complete phase noise analysis that leads tooptimum performance of all relevant oscillator features. Alsoincluded are CMOS oscillators, which recently have become importantin cellular applications. For readers interested in specializedapplications and topics, a full chapter provides all the necessaryreferences. The contents of the text fall into two major categories: * Chapters 1 through 9 deal with a very detailed and expandedsingle resonator oscillator, including a thorough treatment of bothnonlinear analysis and phase noise * Chapters 10 and 11 use the knowledge obtained and apply it tomultiple coupled oscillators (synchronized oscillators) This text is partially based on research sponsored by the DefenseAdvanced Research Projects Agency (DARPA) and the United StatesArmy and conducted by Synergy Microwave Corporation. With thewealth of information provided for the analysis and practicaldesign of single and synchronized low-noise microwave oscillators,it is recommended reading for all RF microwave engineers. Inaddition, the text's comprehensive, step-by-step approach makes itan excellent graduate-level textbook.

Download or read book RF CMOS Oscillators for Modern Wireless Applications written by Masoud Babaie and published by River Publishers Circuits and. This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this book is to bring forth the exciting and innovative RF oscillator structures that demonstrate better phase noise performance, lower cost, and higher power efficiency than currently achievable.

Download or read book All Digital Frequency Synthesizer in Deep Submicron CMOS written by Robert Bogdan Staszewski and published by John Wiley & Sons. This book was released on 2006-09-22 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new and innovative paradigm for RF frequency synthesis and wireless transmitter design Learn the techniques for designing and implementing an all-digital RF frequency synthesizer. In contrast to traditional RF techniques, this innovative book sets forth digitally intensive design techniques that lead the way to the development of low-cost, low-power, and highly integrated circuits for RF functions in deep submicron CMOS processes. Furthermore, the authors demonstrate how the architecture enables readers to integrate an RF front-end with the digital back-end onto a single silicon die using standard ASIC design flow. Taking a bottom-up approach that progressively builds skills and knowledge, the book begins with an introduction to basic concepts of frequency synthesis and then guides the reader through an all-digital RF frequency synthesizer design: Chapter 2 presents a digitally controlled oscillator (DCO), which is the foundation of a novel architecture, and introduces a time-domain model used for analysis and VHDL simulation Chapter 3 adds a hierarchical layer of arithmetic abstraction to the DCO that makes it easier to operate algorithmically Chapter 4 builds a phase correction mechanism around the DCO such that the system's frequency drift or wander performance matches that of the stable external frequency reference Chapter 5 presents an application of the all-digital RF synthesizer Chapter 6 describes the behavioral modeling and simulation methodology used in design The final chapter presents the implementation of a full transmitter and experimental results. The novel ideas presented here have been implemented and proven in two high-volume, commercial single-chip radios developed at Texas Instruments: Bluetooth and GSM. While the focus of the book is on RF frequency synthesizer design, the techniques can be applied to the design of other digitally assisted analog circuits as well. This book is a must-read for students and engineers who want to learn a new paradigm for RF frequency synthesis and wireless transmitter design using digitally intensive design techniques.

Download or read book Millimeter Wave Antennas Configurations and Applications written by Jaco du Preez and published by Springer. This book was released on 2016-06-20 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively reviews the state of the art in millimeter-wave antennas, traces important recent developments and provides information on a wide range of antenna configurations and applications. While fundamental theoretical aspects are discussed whenever necessary, the book primarily focuses on design principles and concepts, manufacture, measurement techniques, and practical results. Each of the various antenna types scalable to millimeter-wave dimensions is considered individually, with coverage of leaky-wave and surface-wave antennas, printed antennas, integrated antennas, and reflector and lens systems. The final two chapters address the subject from a systems perspective, providing an overview of supporting circuitry and examining in detail diverse millimeter-wave applications, including high-speed wireless communications, radio astronomy, and radar. The vast amount of information now available on millimeter-wave systems can be daunting for researchers and designers entering the field. This book offers readers essential guidance, helping them to gain a thorough understanding based on the most recent research findings and serving as a sound basis for informed decision-making.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microwave Journal written by and published by . This book was released on 2007 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 2021 IEEE Radio Frequency Integrated Circuits Symposium RFIC written by IEEE Staff and published by . This book was released on 2021-06-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: RFIC is the premier IC Conference focused on the latest developments in RF Microwave, and Millimeter Wave Integrated Circuit Technology and Innovation

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1994 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt: