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Author: Sung Tae Moon
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Frequency synthesizer is a key building block of fully-integrated wireless communication systems. Design of a frequency synthesizer requires the understanding of not only the circuit-level but also of the transceiver system-level considerations. This dissertation presents a full cycle of the synthesizer design procedure starting from the interpretation of standards to the testing and measurement results. A new methodology of interpreting communication standards into low level circuit specifications is developed to clarify how the requirements are calculated. A detailed procedure to determine important design variables is presented incorporating the fundamental theory and non-ideal effects such as phase noise and reference spurs. The design procedure can be easily adopted for different applications. A BiCMOS frequency synthesizer compliant for both wireless local area network (WLAN) 802.11a and 802.11b standards is presented as a design example. The two standards are carefully studied according to the proposed standard interpretation method. In order to satisfy stringent requirements due to the multi-standard architecture, an improved adaptive dual-loop phase-locked loop (PLL) architecture is proposed. The proposed improvements include a new loop filter topology with an active capacitance multiplier and a tunable dead zone circuit. These improvements are crucial for monolithic integration of the synthesizer with no off-chip components. The proposed architecture extends the operation limit of conventional integer N type synthesizers by providing better reference spur rejection and settling time performance while making it more suitable for monolithic integration. It opens a new possibility of using an integer-N architecture for various other communication standards, while maintaining the benefit of the integer-N architecture; an optimal performance in area and power consumption.
Author: Sung Tae Moon
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Frequency synthesizer is a key building block of fully-integrated wireless communication systems. Design of a frequency synthesizer requires the understanding of not only the circuit-level but also of the transceiver system-level considerations. This dissertation presents a full cycle of the synthesizer design procedure starting from the interpretation of standards to the testing and measurement results. A new methodology of interpreting communication standards into low level circuit specifications is developed to clarify how the requirements are calculated. A detailed procedure to determine important design variables is presented incorporating the fundamental theory and non-ideal effects such as phase noise and reference spurs. The design procedure can be easily adopted for different applications. A BiCMOS frequency synthesizer compliant for both wireless local area network (WLAN) 802.11a and 802.11b standards is presented as a design example. The two standards are carefully studied according to the proposed standard interpretation method. In order to satisfy stringent requirements due to the multi-standard architecture, an improved adaptive dual-loop phase-locked loop (PLL) architecture is proposed. The proposed improvements include a new loop filter topology with an active capacitance multiplier and a tunable dead zone circuit. These improvements are crucial for monolithic integration of the synthesizer with no off-chip components. The proposed architecture extends the operation limit of conventional integer N type synthesizers by providing better reference spur rejection and settling time performance while making it more suitable for monolithic integration. It opens a new possibility of using an integer-N architecture for various other communication standards, while maintaining the benefit of the integer-N architecture; an optimal performance in area and power consumption.
Author: Ulrich L. Rohde
Publisher: John Wiley & Sons
ISBN: 1119666090
Category : Technology & Engineering
Languages : en
Pages : 816
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Book Description
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
Author: Jun-an Zhang
Publisher: Springer Nature
ISBN: 9811672660
Category : Technology & Engineering
Languages : en
Pages : 150
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Book Description
The book focuses on design technology of high-speed and high-performance direct digital frequency synthesizer (DDS) chip. The technologies involves phase to amplitude converter design, D/A converter design, phase accumulator design, multi-chip synchronization circuit design, etc. In each chapter, the concept of the technology is explained first, and then the features of different implementation schemes are introduced through the real design cases. More over, a design case of a 2.5GHz monolithic DDS in 0.18 μm CMOS which was designed by the authors are introduced in detail, which can help the reader understanding about the of DDS design deeply. The book is suitable for the readers who are interested to learn practical design technology in DDS. The book can benefit researchers, engineers, and graduate students in fields of mix-signal IC design, communication engineering, electronics engineering, and radar engineering, etc.
Author: Li Lin
Publisher:
ISBN:
Category :
Languages : en
Pages : 226
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Book Description
Author: Alexander Chenakin
Publisher: Artech House
ISBN: 1596932317
Category : Technology & Engineering
Languages : en
Pages : 235
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Book Description
A frequency synthesizer is an electronic system for generating any of a range of frequencies from a single fixed oscillator. They are found in modern devices like radio receivers, mobile phones, and GPS systems. This comprehensive resource offers RF and microwave engineers a thorough overview of both well-established and recently developed frequency synthesizer design techniques. Professionals find expert guidance on all design aspects, including main architectures, key building blocks, and practical circuit implementation. Engineers learn the development process and gain a solid understanding of how to build a synthesizer from a basic diagram to the final product.Starting with a simple single-loop PLL example, the book progressively examines various alternatives -- fractional-N, DDS, frequency offset, multiloop and more OCo to achieve required performance objectives. This unique volume gathers a collection of block diagrams, clever circuits, design recipes, and other hard-to-find information that is usually treated as OC design secretsOCO. Written in a simple yet rigorous style with numerous illustrations, the book is an all-in-one reference for both beginner and experienced designers.
Author: Michael H. Perrott
Publisher: Elsevier Inc. Chapters
ISBN: 0128064587
Category : Technology & Engineering
Languages : en
Pages : 37
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Book Description
Time-to-digital converter (TDC) circuits are a key component for achieving high-performance digital phase-locked loops (PLLs) which offer lower area and greater flexibility than their analog PLL counterparts. This chapter focuses on a recently developed TDC architecture known as the gated ring oscillator (GRO) which offers first-order shaping of its quantization noise and delay stage mismatch. To provide context for the GRO discussion, background on general TDC implementation techniques is described along with key performance issues related to digital frequency synthesizers. The GRO concept is then presented, followed by implementation details and measured results. Finally, recent variations on the GRO concept are described such as a MASH TDC structure which achieves higher-order noise shaping and a switched ring oscillator (SRO) TDC which improves robustness to dead zones encountered by the GRO TDC.
Author: James A. Crawford
Publisher: Artech House Microwave Library
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 464
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Book Description
This work is aimed at practitioners wishing to gain a broader systems-based perspective of phase-locked loops; and is also suitable as a graduate text for engineering students. It provides detailed coverage of digital sampling effects in modern phase-locked frequency synthesizers from a systems perspective, and discusses all aspects of phase noise, its mathematical modelling and its impact upon different digital communication systems. Sections on building blocks for frequency synthesis using phase-locked loops, frequency synthesis using sampled-data control systems, and MASCET, are included.
Author: Vadim Manassewitsch
Publisher: Wiley-Interscience
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 628
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Book Description
The landmark text on frequency synthesizers-now in paperback Frequency Synthesizers: Theory and Design, Third Edition is the newest edition of Vadim Manassewitsch's definitive treatment of the subject. Updated to include the latest achievements in the performance of crystal-controlled oscillators, the design theory of fast-switching-time synthesizers, and an example of their practical applications, the book continues to be a complete guide for everyone who works with synthesizers. Intended to formulate basic design principles and to demonstrate design procedures meeting several stringent requirements simultaneously, its emphasis is on high-speed synthesis and its new applications in radar, spread spectrum communications, automatic test equipment, and nuclear magnetic resources. Manassewitsch describes numerous approaches to ultra-stable signal sources generating spectrally pure signals of high accuracy, and shows how various building blocks such as mixers, oscillators, and frequency multipliers and dividers are used in frequency synthesis. To meet the needs of engineers in this rapidly growing field, Manassewitsch has added several novel frequency synthesis techniques, developed the principles of high-speed synthesis, and described new synthesizers using important design approaches. A summary of the most recent developments in frequency generation and control, the book is firmly based on the realities of current design practices in the United States as well as abroad. With an intermodulation products chart among its figures, a computer program that calculates the frequencies of mixer intermodulation products among its appendices, and a bibliography of more than 190 references, Frequency Synthesizers: Theory and Design continues to be an invaluable aid for engineers, managers, instructors, and students.
Author: Keliu Shu
Publisher: Springer Science & Business Media
ISBN: 0387236694
Category : Technology & Engineering
Languages : en
Pages : 227
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Book Description
Thanks to the advance of semiconductor and communication technology, the wireless communication market has been booming in the last two decades. It evolved from simple pagers to emerging third-generation (3G) cellular phones. In the meanwhile, broadband communication market has also gained a rapid growth. As the market always demands hi- performance and low-cost products, circuit designers are seeking hi- integration communication devices in cheap CMOS technology. The phase-locked loop frequency synthesizer is a critical component in communication devices. It works as a local oscillator for frequency translation and channel selection in wireless transceivers and broadband cable tuners. It also plays an important role as the clock synthesizer for data converters in the analog-and-digital signal interface. This book covers the design and analysis of PLL synthesizers. It includes both fundamentals and a review of the state-of-the-art techniques. The transient analysis of the third-order charge-pump PLL reveals its locking behavior accurately. The behavioral-level simulation of PLL further clarifies its stability limit. Design examples are given to clearly illustrate the design procedure of PLL synthesizers. A complete derivation of reference spurs in the charge-pump PLL is also presented in this book. The in-depth investigation of the digital CA modulator for fractional-N synthesizers provides insightful design guidelines for this important block.
Author: Ramesh Harjani
Publisher: World Scientific
ISBN: 9814479020
Category : Technology & Engineering
Languages : en
Pages : 233
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Book Description
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.
