Showing posts with label microwaves. Show all posts
Showing posts with label microwaves. Show all posts

Microwave Engineering Review

Microwave Engineering
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I was first introduced to this book through my professor. After reading this book I had a very good understanding of the material: wave guides, networks, S-parameters, filters, impedence matching, and transmission lines. This book does it all. It is an excellent introductory to intermediate book on Microwave engineering. You can understand the book entirely without getting lost in theory. Pozar does a good job at not confusing the reader, and it provides some real world examples that help the user relate. I myself go to GA Tech, and I recommend any electrical engineering student who is interested in electromagnetics or RF engineering to buy this book. If only because the GA Tech Library only has one copy and it is always checked out.

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Focusing on the design of microwave circuits and components, this valuable reference offers professionals and students an introduction to the fundamental concepts necessary for real world design. The author successfully introduces Maxwell's equations, wave propagation, network analysis, and design principles as applied to modern microwave engineering. A considerable amount of material in this book is related to the design of specific microwave circuits and components, for both practical and motivational value. It also presents the analysis and logic behind these designs so that the reader can see and understand the process of applying the fundamental concepts to arrive at useful results. The derivations are well laid out and the majority of each chapter's formulas are displayed in a nice tabular format every few pages. This Third Edition offers greatly expanded coverage with new material on: Noise; Nonlinear effects; RF MEMs; transistor power amplifiers; FET mixers; oscillator phase noise; transistor oscillators and frequency multiplier.

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Microwave Transmission Networks : Planning, Design and Deployment Review

Microwave Transmission Networks : Planning, Design and Deployment
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This book provides an excellent overview of microwave engineering within the industry. It is well written and laid out in an introduction to deployment fashion. Excellent discussion on link budget development and a thorough view of availability versus reliability within the microwave path. I like how the author introduces you to the basic fundamentals of microwave networks and then moves into planning, design, and deployment. If you design or work with microwave radios, this book should be on your shelf as a right hand tool. The book has been an excellent reference to me for developing software and microwave link budgets. Great job!

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Design and build - anywhere in the world. The only thoroughly modern reference on microwave transmission network engineering and management, expert Harvey Lehpamer's stellar "Microwave Transmission Networks" provides hands-on help that speeds every step of planning, designing, building, and testing systems built to both North American and ITU standards.Offering in-depth help you'll use every day, from feasibility studies to actual hardware rollouts, this valuable and easy-to-understand resource helps project managers, engineers, and planners to: understand, design, and build microwave point-to-point networks - long- or short-haul, North American or ITU standards; expedite the analysis and the design process using internationally accepted models; calculate loss/attenuation, fading and fade margins, quality, and availability and perform interference analysis; get need-to-know answers on microwave link engineering; perform expert testing from design stage through acceptance; handle hardware issues from housings to antenna mounts and beyond; understand and track microwave network rollouts; manage maintenance, regulatory issues, ethical dilemmas, and logistical and organizational challenges; understand other microwave systems like Point-to-Multipoint, WLANs, and Bluetooth as well as microwave systems for rapid deployment; and, more.

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Microwave and Rf Design: A Systems Approach Review

Microwave and Rf Design: A Systems Approach
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"Microwave and RF Design" fills a much needed void in describing the basic principles of RF engineering and application. Included are many examples clarifying techniques that one uses in making practical RF design decisions. Whether one is a seasoned engineer in need of a review or an aspiring student, "Microwave and RF Design" promises to provide the reader with the knowledge and confidence necessary to tackle many of the problems seen in today's world.

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Plain and simple, this book is the result of years of work, including the publication of a beta version so we could make sure the final product is the very best textbook available. Just as an example, the beta version was 670 pages, and comments from reviewers like you have resulted in a 1,000 page powerhouse. Written by Michael Steer, Lampe Professor of Electrical and Computer Engineering at North Carolina State University, the independent modules in this book can be employed for a single course, or the same textbook can carry the student and instructor through multiple courses in microwave and radio frequency design. This book is a comprehensive introduction to RF and microwave design with a systems first approach. However, this does not mean that components are ignored. The book is arranged in five modules (see the TOC) that are independent but do build on each other and are best taught in sequence. Design examples are used throughout the book, and many of them incorporate design tradeoffs that are only appreciated in the context of a specific design. The book is also characterized by design emphasis with discussion of manufacturability and practical design decisions. Modern treatment - This treatment of radio frequency and microwave engineering provides the tools for engineers to work with modern radio, radar and sensor systems. Advanced components and design techniques are presented, along with a thoroughly modern treatment of traditional microwave theory and techniques. Well rounded radio frequency and microwave engineer - Learning RF and microwave engineering through this book prepares the student and practicing engineer with the skills to engage RF and microwave engineering in the context of the larger system. The engineer will be able to engage in the important tradeoffs between microwave, analog, RF, digital and algorithmic design. Valuable resource - This book is a valuable resource for the practicing engineer with in-depth analysis of modern microwave components and subsystems. The practicing engineer will be able to develop and refine the techniques required to achieve competitive designs.

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Digital Techniques for Wideband Receivers, Second Edition Review

Digital Techniques for Wideband Receivers, Second Edition
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This book is a great intro to digital receiver design and techniques. The focus of this book however, is for those receivers which are used for Radar Warning Receivers (RWRs). The second chapter starts off with typical and desirable characteristics applicable to these type of receivers (wides bandwidth and large instantaneous dynamic range, etc). He then uses this intro to gradually introduce all parts of a receiver and signal processing techniques.
This book covers ADC and their pertinent selection criteria, analog RF chain analysis, probability of detection, FFTs, monobit receiver design, antenna arrays, angle of arrival, spectral estimation techniques (I actually like the presentation here more than compared to Proakis and Manolakis's Digital Signal Processing book), and then how do you test it all as a system.
There are many more topics that I am missing, but I think that I have hit on the main points. All in all, I would recommend this book if you are interested in learning the techniques used in RWRs, but the chapter on ADCs is also good for any designer looking for ways to choose ADCs and how to test them.

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RF & Microwave Design Essentials: Engineering Design and Analysis from DC to Microwaves Review

RF and Microwave Design Essentials: Engineering Design and Analysis from DC to Microwaves
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I found this book to be very interesting once I began reading it I could not put it down. I highlt recommend others to read it I give this book two thumbs up.

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RF & Microwave Design EssentialsThis book is an indispensable tool for the RF/Microwave engineer as well as the scientist in the field working on the high frequency circuit applications. You will discover:] Electricity Fundamentals ] Wave propagation] Amplifier Design] Gain Equations] CAD Examples] S-Parameters ] Circuit Noise ] RF Design] Circuit Stability] Transmission Lines] RF/Microwave Bands

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Cell Towers: Wireless Convenience? or Environmental Hazard? Review

Cell Towers: Wireless Convenience or Environmental Hazard
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The wireless age has exploded and people are using the cell phones everywhere and anytime and as it seems without concern about disturbing other people. It is a social disturbance as well as a handy tool to keep in instant and constant contact, two sides of the same coin. But what about the health concerns? Some people get serious headaches and sensation of heat when talking more than a few minutes. The cell phone is radiating microwaves, like your microwave owen, only not as much... But what if, I repeat IF, also non-thermal levels of microwaves are dangerous? Then the health problem for the world is GIGANTIC! Okey, for cancers to emerge we will have to wait at least ten more years to know for sure...
This book gives information about these health concerns by some of the most important researchers in the field.
Highly recommended for anyone to know more about the facts behind the debate in the media!

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RF Microelectronics (2nd Edition) (Prentice Hall Communications Engineering and Emerging Technologies Series) Review

RF Microelectronics (2nd Edition) (Prentice Hall Communications Engineering and Emerging Technologies Series)
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When I first bought this book, I was very hopeful. The book seemed to cover a lot of relevant material, in a concise fashion. When I tried to read it however, I found it a little bit too much on the concise side. I have read very complicated books with a lot of math before, and I could follow them easier than this "easy" writing style. Almost every subject is covered in other books in more detail and better. Sometimes it's nice to have a simpler book which is an introduction, and that is what I was hoping for, but this just didn't do it for me.I donated the book to the library,as I felt I would never really get too much out of it. This didn't stop me from buying Mr. Razavi's "Design of Analog CMOS ICs " and I liked his tutorial in the IEEE Phase Lock Loop book he edited.I know he can do a better job.

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The Acclaimed RF Microelectronics Best-Seller, Expanded and Updated for the Newest Architectures, Circuits, and DevicesWireless communication has become almost as ubiquitous as electricity, but RF design continues to challenge engineers and researchers. In the 15 years since the first edition of this classic text, the demand for higher performance has led to an explosive growth of RF design techniques. In RF Microelectronics, Second Edition, Behzad Razavi systematically teaches the fundamentals as well as the state-of-the-art developments in the analysis and design of RF circuits and transceivers.Razavi has written the second edition to reflect today's RF microelectronics, covering key topics in far greater detail. At nearly three times the length of the first edition, the second edition is an indispensable tome for both students and practicing engineers. With his lucid prose, Razavi nowOffers a stronger tutorial focus along with hundreds of examples and problems

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RF/Microwave Circuit Design for Wireless Applications Review

RF/Microwave Circuit Design for Wireless Applications
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This is the type of book commonly published by Artech House or IEEE Press. It is as if a person who was highly skilled in writing liberal arts prose finds a file cabinet abandoned by a retired engineering manager. The file cabinet is filled with a lifetime eclectic collection of magazine articles, photo copies of sections of books, and reports from subordinates, all of which were never read by the manager because of time restraints. The liberal arts person shuffles the contents together into a book without really understanding what is written. This book is strewn with tables and illustrations which are never referenced in the text. Most of the illustrations are multiple generation photocopies. Equations contain undefined terms. Critical design issues are passed over with one sentence while there is a several page mathematical derivation of the DC output impedance of a BJT. The author infers that it is not necessary to understand what you do as long as you can get the answer from a CAD program. The book perpetuates the urban legend that Gilbert invented a mixer. This topology goes back to at least 1920 and had been implemented with relays, vacuum tubes, specialized vacuum tubes, and discrete transistors. The author references Gilbert's paper which references the discrete transistor version as prior art and then shows how to make a pre-distortion circuit to add to this mixer to obtain a four quadrant linear multiplier. So much for not reading your references. Finally, the book does not explain anything very clearly. people who are not already skilled in RF will not gain any design ability from this book. They will however get a false sense of skill level that will allow them to do basic, simple designs, but not designs that push technology. That is, they could do a day late dollar short design of consumer products, but not military products.
This comment was added in 2007. It seems that Artech House and the IEEE press have become more careful in what they publish. Most of the books published recently by them are edifying to read and I have purchased and enjoyed several of them.

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A unique, state-of-the-art guide to wireless integrated circuit design.With wireless technology rapidly exploding, there is a growing need for circuit design information specific to wireless applications. Presenting a single-source guidebook to this dynamic area, industry expert Ulrich Rohde and writer David Newkirk provide researchers and engineers with a complete set of modeling, design, and implementation tools for tackling even the newest IC technologies. They emphasize practical design solutions for high-performance devices and circuitry, incorporating ample examples of novel and clever circuits from high-profile companies. They also provide excellent appendices containing working models and CAD-based applications.RF/Microwave Circuit Design for Wireless Applications offers:* Introduction to wireless systems and modulation types* A systematic approach that differentiates between designing for battery-operated devices and base-station design* A comprehensive introduction to semiconductor technologies, from bipolar transistors to CMOS to GaAs MESFETs* Clear guidelines for obtaining the best performance in discrete and integrated amplifier design* Detailed analysis of available mixer circuits applicable to the wireless frequency range* In-depth explanations of oscillator circuits, including microwave oscillators and ceramic-resonator-based oscillators* A thorough evaluation of all components of wireless synthesizers

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Public Health SOS: The Shadow Side Of The Wireless Revolution Review

Public Health SOS: The Shadow Side Of The Wireless Revolution
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This is one of the most important books on public health in recent years. The authors make a very clear case that the cart was placed before the horse when it comes to mobile phone safety.
After some very alarming quotes from a collection of well known scientists, authors and researchers, along with some background on electromagnetic radiation, the book delves into 110 questions concerning electromagnetic pollution. The 70-page Q and A session covers a massive amount of ground, from the political wranglings that removed the ability of state and local governments to challenge placement of wireless masts (towers), to the pseudoscience of so-called cell phone "protection" devices. There are lots of practical tips on reducing EMF exposure, recommended ways on measuring EMF and a host of resources for further information.
The time for environmental groups to get on board with this is NOW...there is recent research showing that EMF has profound influences on wildlife and may be playing a role in the disappearance of our bats, bees, fire flies, house sparrows and other species. Rome is burning...large organizations that claim to care about animals, wildlife and the environment should read this book.
Ultimately the book is a manifesto for change, a way to empower and educate. It takes a very complex topic and makes it understandable.


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Electromagnetic factors in health is an emerging public health issue globally, creating electrical sensitivity and being linked to illnesses of many kinds. Read this primer on EMF and health by Prof. Magda Havas of Canada and environmental activist and management consultant to change agents, Camilla Rees, founder of www.ElectromagneticHealth.org. Learn what the independent science shows, what you can do to create electromagnetic safety and how you can help get Congress to pay attention to this important issue affecting humans, animals and nature. This book resulted from 110 Questions asked of the audience at The Commonwealth Club of California in 2008, the nations leading public affairs forum.

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Integrated Circuits for Wireless Communications Review

Integrated Circuits for Wireless Communications
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Don't loose your time for reading this book. Personally I didn't expect a book from Mr.Abidi and Mr.Gray. No given theory and no
practice. Only some old IEEE papers collections .
Such a pitty..

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RF & Microwave Circuit Design for Wireless Applicatons Review

RF and Microwave Circuit Design for Wireless Applicatons
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This is a very good design guide for rf engineers and students involved in microwave components & circuits. Pretty comprehensive, but costly though.

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This is the first book to provide comprehensive coverage of hardware and circuit design specifically for engineers working in wireless communications. It serves as a reference for practicing engineers and technicians working in the areas of RF, microwaves, communications, solid-state devices, and radar.

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Practical RF Circuit Design for Modern Wireless Systems, Volume I : Passive Circuits and Systems Review

Practical RF Circuit Design for Modern Wireless Systems, Volume I : Passive Circuits and Systems
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These books were written by two well-known lectures in the RF/MW field with many years of teaching experience. Their goal was to provide a practical exposition of circuit design in the RF/MW field that appealed to students, academicians, and design engineers. They certainly succeeded. The reader will find that fundamental and advanced principles are properly explained with emphasis in CAD techniques. While the mathematical manipulations are kept to a minimum, the associated results are well referenced and extensively discussed.
Volume I:
This volume focuses mainly on passive circuits and systems. The first two chapters provide a review of RF/MW circuit fundamentals. The emphasis is placed on topics related to RF/MW circuits, such a resonance, series and parallel conversions, quality factor, power transfer, transmission lines, reflection coefficients, and mismatch loss. Chapter 3 describes several radio systems and illustrates how the system's specifications relate to the various individual components. Receiver's characteristics are discussed, such as receiver noise and sensitivity, nonlinearities and dynamic range, and automatic control. The chapter includes the analysis of a CDMA handset from a system point of view. Chapters 4 and 5 describe the use of S parameters, the Smith chart, impedance matching networks, and bandwidth considerations.Many impedance matching design examples are provided with their associated frequency responses. Both lumped and microstrip matching circuits are considered. Chapter 6 shows the use of CAD programs for RF/MW circuit design. This chapter underlines the major key areas in CAD, such as linear circuit analysis, electromagnetic simulation, tuning, synthesis, optimization, non-linear simulations, and statistical techniques. Passive component models are discussed in Chapter 7, which include RLC components, distributed components, transformers, crystals, dielectric resonators, and surface acoustic wave resonators. The authors show how actual parts affect the behavior of a design, and how to account for them in the final product. Chapter 8 gives an overview of passive filters and the techniques used for their design in the RF/MW area. Such topics as the Richards' transformation, Norton transformations, and Kuroda identities are discussed. Chapter 9 is an overview of the major differences and similarities between RF and high-speed digital systems.
Volume II:
This volume focuses mainly on active circuits and systems. The volume begins with a discussion of linear RF/MW amplifier design techniques. The first two chapters deal with stability conditions, stability circles and the various design techniques for transducer gain, operating power gain, and associated gain. Material in low-noise amplifier design and broadband techniques is included, as well as dc considerations. Chapter 3 discusses the modeling of the actual devices (such as BJT, GaAs, HETM, etc). Chapter 4 deals with nonlinear CAD simulations techniques, and their uses. Time and frequency domain methods are discussed and compared. A good discussion of the harmonic balance method is given, including a section on harmonic balance simulation of oscillators. Chapter 5 considers the topic of power transistor amplifiers. The categories of amplifiers are presented and the topics of bias considerations, distortion reduction and predistortion are included. The chapter includes a detailed power amplifier design. Oscillators are discussed in Chapter 6, with emphasis on the negative resistance design approach and CAD simulations. A section is devoted to the description of phase noise. Several design examples are included. An interesting example uses a ceramic resonator, another example involves a crystal resonator, and one example deals with a Colpitts VCO using a varactor diode. Chapter 7 deals with mixers and frequency multipliers. The authors discuss diodes and transistor mixers and their effect on the overall system. The final chapter gives an overview of several wireless systems.
The material covered in these two volumes extends from the basic to the advance. The texts are suitable for short courses in RF/MW circuits, since they provide a comprehensive description of the RF/MW circuit design field. They are also suitable for a course (or courses) at the senior/graduate level in the RF/MW field. The books strongly emphasize design and the use of CAD techniques. Enough information is provided in their CAD examples that the simulations can easily be implemented with one of the major CAD programs available for RF/MW circuits.
These texts contain a tremendous amount of information for RF/MW circuit designers. Especially, for those working in wireless communications. Discrete design is covered in detail-from the individual component specification to the overall system performance. The presentation is clear and well organized. It certainly makes for a good addition to the designer's library.

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The first of a two-volume set, this leading-edge book takes a practical approach to RF circuit design, offering a complete understanding of the fundamental concepts you need to know and use for your work in this industry. The book lays the ground work for efficient RF circuit design in a step-by-step approach, by defining important principles and parameters and progressively introducing critical analytical tools. It helps you distinguish between RF and low frequency circuits, and offers a detailed look at a typical RF system. This is a tested and insightful book that contains answers to most of the questions practical engineers are asking. The first volume reviews various computer-aided simulation, synthesis, and optimization techniques used in modern RF and microwave design, and discusses the practical use of the graphical design tools, such as the Smith Chart.

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Phase-Locked Loops for Wireless Communications: Digital, Analog and Optical Implementations Review

Phase-Locked Loops for Wireless Communications: Digital, Analog and Optical Implementations
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I purchased, read, and refer to this book. It is good. But different from my other PLL books. On a higher more technical level than the other PLL books which I have reviewed. Reads more like a thesis than the other PLL books. I feel that it covers exactly what the title indicates, more wireless communication and space-based PLL coverage than the other books, except no 'implementations' except at conceptual mathematical level. Not a circuits book. No circuits to copy/use. Much more of a pure PLL communications theory book.

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Phase-Locked Loops for Wireless Communications: Digitial,Analog and Optical Implementations, Second Edition presents acomplete tutorial of phase-locked loops from analog implementations todigital and optical designs. The text establishes a thoroughfoundation of continuous-time analysis techniques and maintains aconsistent notation as discrete-time and non-uniform sampling arepresented. New to this edition is a complete treatment of charge pumpsand the complementary sequential phase detector. Another importantchange is the increased use of MATLAB, implemented to providemore familiar graphics and reader-derived phase-locked loopsimulation. Frequency synthesizers and digital divideranalysis/techniques have been added to this second edition. Perhapsmost distinctive is the chapter on optical phase-locked loops thatbegins with sections discussing components such as lasers andphotodetectors and finishing with homodyne and heterodyne loops.Starting with a historical overview, presenting analog, digital, andoptical PLLs, discussing phase noise analysis, and includingcircuits/algorithms for data synchronization, this volume contains newtechniques being used in this field. Highlights of the SecondEdition:
Development of phase-locked loopsfrom analog to digital and optical, with consistent notationthroughout;
Expanded coverage of the loop filters used todesign second and third order PLLs;
Design examples ondelay-locked loops used to synchronize circuits on CPUs and ASICS;
New material on digital dividers that dominate a frequencysynthesizer's noise floor. Techniques to analytically estimate thephase noise of a divider;
Presentation of optical phase-lockedloops with primers on the optical components and fundamentals ofoptical mixing;
Section on automatic frequency control toprovide frequency-locking of the lasers instead of phase-locking;
Presentation of charge pumps, counters, and delay-lockedloops.
The Second Edition includes the essential topics needed bywireless, optics, and the traditional phase-locked loop specialists todesign circuits and software algorithms. All of the material has beenupdated throughout the book.

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Practical RF Circuit Design for Modern Wireless Systems Vol. II Review

Practical RF Circuit Design for Modern Wireless Systems Vol. II
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These books were written by two well-known lectures in the RF/MW field with many years of teaching experience. Their goal was to provide a practical exposition of circuit design in the RF/MW field that appealed to students, academicians, and design engineers. They certainly succeeded. The reader will find that fundamental and advanced principles are properly explained with emphasis in CAD techniques. While the mathematical manipulations are kept to a minimum, the associated results are well referenced and extensively discussed.
Volume I:
This volume focuses mainly on passive circuits and systems. The first two chapters provide a review of RF/MW circuit fundamentals. The emphasis is placed on topics related to RF/MW circuits, such a resonance, series and parallel conversions, quality factor, power transfer, transmission lines, reflection coefficients, and mismatch loss. Chapter 3 describes several radio systems and illustrates how the system's specifications relate to the various individual components. Receiver's characteristics are discussed, such as receiver noise and sensitivity, nonlinearities and dynamic range, and automatic control. The chapter includes the analysis of a CDMA handset from a system point of view. Chapters 4 and 5 describe the use of S parameters, the Smith chart, impedance matching networks, and bandwidth considerations.Many impedance matching design examples are provided with their associated frequency responses. Both lumped and microstrip matching circuits are considered. Chapter 6 shows the use of CAD programs for RF/MW circuit design. This chapter underlines the major key areas in CAD, such as linear circuit analysis, electromagnetic simulation, tuning, synthesis, optimization, non-linear simulations, and statistical techniques. Passive component models are discussed in Chapter 7, which include RLC components, distributed components, transformers, crystals, dielectric resonators, and surface acoustic wave resonators. The authors show how actual parts affect the behavior of a design, and how to account for them in the final product. Chapter 8 gives an overview of passive filters and the techniques used for their design in the RF/MW area. Such topics as the Richards' transformation, Norton transformations, and Kuroda identities are discussed. Chapter 9 is an overview of the major differences and similarities between RF and high-speed digital systems.
Volume II:
This volume focuses mainly on active circuits and systems. The volume begins with a discussion of linear RF/MW amplifier design techniques. The first two chapters deal with stability conditions, stability circles and the various design techniques for transducer gain, operating power gain, and associated gain. Material in low-noise amplifier design and broadband techniques is included, as well as dc considerations. Chapter 3 discusses the modeling of the actual devices (such as BJT, GaAs, HETM, etc). Chapter 4 deals with nonlinear CAD simulations techniques, and their uses. Time and frequency domain methods are discussed and compared. A good discussion of the harmonic balance method is given, including a section on harmonic balance simulation of oscillators. Chapter 5 considers the topic of power transistor amplifiers. The categories of amplifiers are presented and the topics of bias considerations, distortion reduction and predistortion are included. The chapter includes a detailed power amplifier design. Oscillators are discussed in Chapter 6, with emphasis on the negative resistance design approach and CAD simulations. A section is devoted to the description of phase noise. Several design examples are included. An interesting example uses a ceramic resonator, another example involves a crystal resonator, and one example deals with a Colpitts VCO using a varactor diode. Chapter 7 deals with mixers and frequency multipliers. The authors discuss diodes and transistor mixers and their effect on the overall system. The final chapter gives an overview of several wireless systems.
The material covered in these two volumes extends from the basic to the advance. The texts are suitable for short courses in RF/MW circuits, since they provide a comprehensive description of the RF/MW circuit design field. They are also suitable for a course (or courses) at the senior/graduate level in the RF/MW field. The books strongly emphasize design and the use of CAD techniques. Enough information is provided in their CAD examples that the simulations can easily be implemented with one of the major CAD programs available for RF/MW circuits.
These texts contain a tremendous amount of information for RF/MW circuit designers. Especially, for those working in wireless communications. Discrete design is covered in detail-from the individual component specification to the overall system performance. The presentation is clear and well organized. It certainly makes for a good addition to the designer's library.

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The second of two volumes, this is a comprehensive treatment of nonlinear circuits, introducing the advanced topics that professionals need to understand for their RF (radio frequency) circuit design work. It presents an introduction to active RF devices and their modelling, and explores nonlinear circuit simulation techniques. Design techniques are addressed for RF transistor amplifiers, oscillators, mixers and frequency multipliers. This reference concludes with an in-depth look at circuits in systems and their radio system applications, illustrating how the components are interconnected to complete a system that meets the necessary specifications.

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Cell Phones: Invisible Hazards in the Wireless Age: An Insider's Alarming Discoveries about Cancer and Genetic Damage Review

Cell Phones: Invisible Hazards in the Wireless Age: An Insider's Alarming Discoveries about Cancer and Genetic Damage
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Cell phones have become an integral part of American (and increasingly the world) society. They are ubiquitous in the business world and day-to-day life activities. The authors discuss in detail the risks associated with cell phones, particularly those of the digital variety. They tell the all to common tale of industry PR "spin" vs. public safety and common sense. While it may not be correct to state that cell phones cause brain cancer, the preliminary indications and not heart warming.
Thus far clinical studies have shown:
1) Cell phone radiation penetrates deep into the developing brains of children.
2) Cell phone radiation results in chromosomal damage to blood exposed to wireless phone radio waves. There is a link between chromosome damage and brain cancer.
3) Cell phone radiation breaks down the blood brain barrier. Think of the blood brain barrier as an immune system for the brain. As it breaks down, other environmental toxins more easily enter the brain and cause damage.
4) A number of studies showed a statistically significant correlation between brain cancer deaths and cell phone use.
5) Cell phone radiation can cause pacemakers to malfunction is they (pacemakers) are not properly insulated from cell phones that are within 6 inches of the pacemaker.
The above are based on elaborate human, animal, and laboratory experiments that examine the effects of cell phone radiation. The experiments in the book focus primarily on cell phone use - when the phone is near the head. If cell phone radiation is able to penetrate the human skull, the effects may be even more dramatic on soft tissue such as reproductive organs that may be continuously exposed to radiation by a phone carried in a pants pocket.
Based on the scientific evidence in the book you should avoid using a cell phone or being around one to be perfectly safe. Since that is not likely, the following precautions can be taken:
1) Despite the aggressive marketing practices of the industry towards children, keep cell phones out of the hands of your kids, they are particularly susceptible to the radiation generated by cell phones.
2) Use a hands free model and keep the phone away from your body.
3) If you put the phone up to your ear, point the antenna away from you.
4) If you have one of those cool little phones with a built in antenna, the whole phone is an antenna and you are getting a heavier dose of radiation. GET A HEADSET OR A DIFFERENT PHONE.
5) A cell phone has to pump out more radiation when the signal strength is low, try not to use the phone unless the signal strength is near 100%.
Initial studies show a clear link between cell phone radiation (especially associated with digital phones) and adverse health effects. In the next 10 to 20 years the effects will become apparent with the general public serving as the test subjects. Tread carefully on those wireless stocks over the long term, and take precautions today so you don't become a statistic. Many thanks to Dr. Carlo and Martin Schram for timely well written book packed with critical info for all wireless customers.

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Microwave and Rf Design of Wireless Systems Review

Microwave and Rf Design of Wireless Systems
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This book covers a wide range of knowledge needed to get started on RF engineering field. It covers background theories in wireless technology, transmission lines, antennas, filters, amplifiers, mixers, oscillators, some modern modulation techniques, and also transceiver architecture.
Although this book does not provide in depth coverage on those topics, it still provides enough background for begineers to get started in radio design with discrete components. Many practical examples are given including low noise amplifier design and practical filter transformation (Kuroda transformation) into microstrips.
One great thing about this book is its completeness from transmitting end to receiving end, which provide readers with better overall picture on what is needed in RF design.

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RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library) Review

RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library)
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An excellent source of information. Mr Cripps very articulatly reviews at all classes of RF power amplification, and explains theoretical design principles and suggests improvements. His 'Load-pull' technique method is already widely used in design of PA's and serves as a good design aid. Although I would have liked him to go deeper into 'high-efficiciency PA techniques, spending more time on 'Chierix, Khan and Doherty methods. His book is the best reference on PA's I have seen in the last decade, I could not put it down. I look forward to his next book

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Reviewing the previous edition, "IEEE Microwave Magazine" boasted, "anyone designing power amplifiers will find this book thought provoking and useful." Professionals in the field agreed as the book went on to be one of our top-selling RF design titles. This extensively revised edition of "RF Power Amplifiers for Wireless Communications" offers practitioners a comprehensive, practical, and up-to-date understanding of how to tackle a PA (power amplifier) design with confidence and quickly determine the cause of malfunctioning hardware. Among the numerous updates, the Second Edition includes five new chapters on some of today's most important topics, such as class AB PAs at GHz frequencies; switching PA modes at GHz frequencies; signals, modulation systems, and PA nonlinearities; power amplifier bias circuit design; and load-pull techniques. Supported with nearly 200 illustrations, the book contains the most complete survey of RF PA efficiency enhancement and linearization techniques in a single volume.

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