Download or read book Doherty Power Amplifiers written by Bumman Kim and published by Academic Press. This book was released on 2018-03-28 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doherty Power Amplifiers: From Fundamentals to Advanced Design Methods is a great resource for both RF and microwave engineers and graduate students who want to understand and implement the technology into future base station and mobile handset systems. The book introduces the very basic operational principles of the Doherty Amplifier and its non-ideal behaviors. The different transconductance requirements for carrier and peaking amplifiers, reactive element effect, and knee voltage effect are described. In addition, several methods to correct imperfections are introduced, such as uneven input drive, gate bias adaptation, dual input drive and the offset line technique. Advanced design methods of Doherty Amplifiers are also explained, including multistage/multiway Doherty power amplifiers which can enhance the efficiency of the amplification of a highly-modulated signal. Other covered topics include signal tracking operation which increases the dynamic range, highly efficient saturated amplifiers, and broadband amplifiers, amongst other comprehensive, related topics. - Specifically written on the Doherty Power Amplifier by the world's leading expert, providing an in-depth presentation of principles and design techniques - Includes detailed analysis on correcting non-ideal behaviors of Doherty Power Amplifiers - Presents advanced Doherty Power Amplifier architectures
Download or read book The Doherty amplifier and beyond written by Luca Piazzon and published by Luca Piazzon. This book was released on 2011-04-11 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: What's a Doherty power amplifier? What's the practical design flow to develop a DPA? May I estimate the achievable performance? May I get more efficiency, gain, back-off and frequencies from my DPA? Whether you have a FAQ or a rare question, inside you'll probably find the answer. This book is a real design manual, which can help the designer to identify, starting from the desired requirements, the best approach to use, simultaneously highlighting the advantages as well as disadvantages that occurs with its adoption.
Download or read book Advanced Techniques in RF Power Amplifier Design written by Steve C. Cripps and published by Artech House. This book was released on 2002 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-anticipated volume builds on the author's best selling and classic work, RF Power Amplifiers for Wireless Communications (Artech House, 1999), offering experienced engineers a more in-depth understanding of the theory and design of RF power amplifiers. An invaluable reference tool for RF, digital and system level designers, the book includes discussions on the most critical topics for professionals in the field, including envelope power management schemes and linearization.
Download or read book Efficiency Enhancement of Linear GaN RF power Amplifiers Using the Doherty Technique written by and published by kassel university press GmbH. This book was released on with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Efficiency RF and Microwave Solid State Power Amplifiers written by Paolo Colantonio and published by John Wiley & Sons. This book was released on 2009-07-08 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Do you want to know how to design high efficiency RF and microwave solid state power amplifiers? Read this book to learn the main concepts that are fundamental for optimum amplifier design. Practical design techniques are set out, stating the pros and cons for each method presented in this text. In addition to novel theoretical discussion and workable guidelines, you will find helpful running examples and case studies that demonstrate the key issues involved in power amplifier (PA) design flow. Highlights include: Clarification of topics which are often misunderstood and misused, such as bias classes and PA nomenclatures. The consideration of both hybrid and monolithic microwave integrated circuits (MMICs). Discussions of switch-mode and current-mode PA design approaches and an explanation of the differences. Coverage of the linearity issue in PA design at circuit level, with advice on low distortion power stages. Analysis of the hot topic of Doherty amplifier design, plus a description of advanced techniques based on multi-way and multi-stage architecture solutions. High Efficiency RF and Microwave Solid State Power Amplifiers is: an ideal tutorial for MSc and postgraduate students taking courses in microwave electronics and solid state circuit/device design; a useful reference text for practising electronic engineers and researchers in the field of PA design and microwave and RF engineering. With its unique unified vision of solid state amplifiers, you won’t find a more comprehensive publication on the topic.
Download or read book Switchmode RF and Microwave Power Amplifiers written by Andrei Grebennikov and published by Academic Press. This book was released on 2021-03-19 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: Switchmode RF and Microwave Power Amplifiers, Third Edition is an essential reference book on developing RF and microwave switchmode power amplifiers. The book combines theoretical discussions with practical examples, allowing readers to design high-efficiency RF and microwave power amplifiers on different types of bipolar and field-effect transistors, design any type of high-efficiency switchmode power amplifiers operating in Class D or E at lower frequencies and in Class E or F and their subclasses at microwave frequencies with specified output power, also providing techniques on how to design multiband and broadband Doherty amplifiers using different bandwidth extension techniques and implementation technologies. This book provides the necessary information to understand the theory and practical implementation of load-network design techniques based on lumped and transmission-line elements. It brings a unique focus on switchmode RF and microwave power amplifiers that are widely used in cellular/wireless, satellite and radar communication systems which offer major power consumption savings. Provides a complete history of high-efficiency Class E and Class F techniques Presents a new chapter on Class E with shunt capacitance and shunt filter to simplify the design of high-efficiency power amplifier with broader frequency bandwidths Covers different Doherty architectures, including integrated and monolithic implementations, which are and will be, used in modern communication systems to save power consumption and to reduce size and costs Includes extended coverage of multiband and broadband Doherty amplifiers with different frequency ranges and output powers using different bandwidth extension techniques Balances theory with practical implementation, avoiding a cookbook approach and enabling engineers to develop better designs, including hybrid, integrated and monolithic implementations
Download or read book The Doherty Amplifier written by Everett Eberhard and published by . This book was released on 1938 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Efficiency Load Modulation Power Amplifiers for Wireless Communications written by Zhancang Wang and published by Artech House. This book was released on 2017-06-30 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This cutting-edge resource presents a complete and systematic overview of the practical design considerations of radio frequency (RF) high efficiency load modulation power amplifiers (PA) for modern wireless communications for 4G and beyond. It provides comprehensive insight into all aspects of load modulation PA design and optimization not only covering design approaches specifically for passive and active load modulation operation but also hybrid with dynamic supply modulation and digital signal processing algorithms required for performance enhancement. Passive load impedance tuner design, dynamic load modulation PA, active load modulation PA and Doherty PA design for efficiently enhancement are explained. Readers find practical guidance into load modulation PA design for bandwidth extension, including video bandwidth enhancement techniques, broadband dynamic load amplifiers, topology selection, design procedures, and network output. This book presents the evolution and integration of classical load modulation PA topologies in order to meet new challenges in the field.
Download or read book RF and Microwave Power Amplifier Design written by Andrei Grebennikov and published by McGraw Hill Professional. This book was released on 2004-09-15 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a rigorous tutorial on radio frequency and microwave power amplifier design, teaching the circuit design techniques that form the microelectronic backbones of modern wireless communications systems. Suitable for self-study, corporate training, or Senior/Graduate classroom use, the book combines analytical calculations and computer-aided design techniques to arm electronic engineers with every possible method to improve their designs and shorten their design time cycles.
Download or read book Broadband RF and Microwave Amplifiers written by Andrei Grebennikov and published by CRC Press. This book was released on 2017-07-12 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Broadband RF and Microwave Amplifiers provides extensive coverage of broadband radio frequency (RF) and microwave power amplifier design, including well-known historical and recent novel schematic configurations, theoretical approaches, circuit simulation results, and practical implementation strategies. The text begins by introducing two-port networks to illustrate the behavior of linear and nonlinear circuits, explaining the basic principles of power amplifier design, and discussing impedance matching and broadband power amplifier design using lumped and distributed parameters. The book then: Shows how dissipative or lossy gain-compensation-matching circuits can offer an important trade-off between power gain, reflection coefficient, and operating frequency bandwidth Describes the design of broadband RF and microwave amplifiers using real frequency techniques (RFTs), supplying numerous examples based on the MATLAB® programming process Examines Class-E power amplifiers, Doherty amplifiers, low-noise amplifiers, microwave gallium arsenide field-effect transistor (GaAs FET)-distributed amplifiers, and complementary metal-oxide semiconductor (CMOS) amplifiers for ultra-wideband (UWB) applications Broadband RF and Microwave Amplifiers combines theoretical analysis with practical design to create a solid foundation for innovative ideas and circuit design techniques.
Download or read book High Efficiency and High Linearity Doherty Amplifiers for Portable Wireless Communications written by Yu Zhao and published by . This book was released on 2006 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of power amplifiers for wireless systems has become a challenging task due to increasingly stringent requirements on transmitters. The Doherty amplifier is an important candidate for this type of application due to its feature of high efficiency over an extended power range. However, Doherty amplifiers in practice have often failed to exhibit the superb efficiency predicted by theory and their linearity is not always adequate to meet strict specifications of systems with high Peak-to-Average Ratio (PAR) signals such as CDMA systems. The objective of this dissertation is to provide a path for Doherty amplifiers that leads to a simultaneous high efficiency and high linearity performance. First, based on detailed understanding of Doherty amplifier theory and careful investigation of behavior of Doherty amplifiers, a series of guidelines for designing a Doherty amplifier was created. A Doherty amplifier based on GaAs FET devices was accordingly designed in simulation and then fabricated. Simulation and measurement results were compared to provide a description of performance issues of the Doherty amplifier. Following the studies on characteristics of the Doherty amplifier, a new digital signal processing (DSP) control strategy was developed, which involves control of the gate bias voltage of the auxiliary amplifier. DSP was utilized to mitigate gain variations through this bias control and to eliminate phase distortion through baseband phase predistortion. The strategy was shown to significantly improve linearity of the Doherty amplifier, enabling it to meet ACPR specifications with IS-95 signals. The Doherty amplifier also maintained its high efficiency performance. Advantages of analog component based predistortion were also studied and demonstrated by experiments. Finally, in an effort to find a circuit solution for high linearity Doherty amplifiers, nonlinear behavior in Doherty amplifiers was investigated. A simple analytical model was developed based on full transistor models. The model enables nonlinearity analysis associated with each nonlinear component in the transistor. This results in accurate distortion prediction for a Doherty amplifier implemented with HBTs. The model provides diagnosis of nonlinearity in the Doherty amplifier. Accordingly, simple circuit modifications were made to significantly enhance linearity. Experimental results demonstrate the efficacy of this model.
Download or read book RF Power Amplifiers for Wireless Communications written by Steve C. Cripps and published by Artech House Publishers. This book was released on 2006-01-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively revised edition offers a comprehensive, practical, up-to-date understanding of how to tackle a power amplifier design with confidence and quickly determine the cause of malfunctioning hardware.
Download or read book Fundamentals of RF and Microwave Transistor Amplifiers written by Inder Bahl and published by John Wiley & Sons. This book was released on 2009-06-17 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Comprehensive and Up-to-Date Treatment of RF and Microwave Transistor Amplifiers This book provides state-of-the-art coverage of RF and microwave transistor amplifiers, including low-noise, narrowband, broadband, linear, high-power, high-efficiency, and high-voltage. Topics covered include modeling, analysis, design, packaging, and thermal and fabrication considerations. Through a unique integration of theory and practice, readers will learn to solve amplifier-related design problems ranging from matching networks to biasing and stability. More than 240 problems are included to help readers test their basic amplifier and circuit design skills-and more than half of the problems feature fully worked-out solutions. With an emphasis on theory, design, and everyday applications, this book is geared toward students, teachers, scientists, and practicing engineers who are interested in broadening their knowledge of RF and microwave transistor amplifier circuit design.
Download or read book Modeling and Design Techniques for RF Power Amplifiers written by Arvind Raghavan and published by John Wiley & Sons. This book was released on 2008-02-04 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieve higher levels of performance, integration, compactness, and cost-effectiveness in the design and modeling of radio-frequency (RF) power amplifiers RF power amplifiers are important components of any wireless transmitter, but are often the limiting factors in achieving better performance and lower cost in a wireless communication system—presenting the RF IC design community with many challenges. The next-generation technological advances presented in this book are the result of cutting-edge research in the area of large-signal device modeling and RF power amplifier design at the Georgia Institute of Technology, and have the potential to significantly address issues of performance and cost-effectiveness in this area. Richly complemented with hundreds of figures and equations, Modeling and Design Techniques for RF Power Amplifiers introduces and explores the most important topics related to RF power amplifier design under one concise cover. With a focus on efficiency enhancement techniques and the latest advances in the field, coverage includes: Device modeling for CAD Empirical modeling of bipolar devices Scalable modeling of RF MOSFETs Power amplifier IC design Power amplifier design in silicon Efficiency enhancement of RF power amplifiers The description of state-of-the-art techniques makes this book a valuable and handy reference for practicing engineers and researchers, while the breadth of coverage makes it an ideal text for graduate- and advanced undergraduate-level courses in the area of RF power amplifier design and modeling.
Download or read book Modeling and Design Techniques for RF Power Amplifiers written by Arvind Raghavan and published by John Wiley & Sons. This book was released on 2008-01-09 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieve higher levels of performance, integration, compactness, and cost-effectiveness in the design and modeling of radio-frequency (RF) power amplifiers RF power amplifiers are important components of any wireless transmitter, but are often the limiting factors in achieving better performance and lower cost in a wireless communication system—presenting the RF IC design community with many challenges. The next-generation technological advances presented in this book are the result of cutting-edge research in the area of large-signal device modeling and RF power amplifier design at the Georgia Institute of Technology, and have the potential to significantly address issues of performance and cost-effectiveness in this area. Richly complemented with hundreds of figures and equations, Modeling and Design Techniques for RF Power Amplifiers introduces and explores the most important topics related to RF power amplifier design under one concise cover. With a focus on efficiency enhancement techniques and the latest advances in the field, coverage includes: Device modeling for CAD Empirical modeling of bipolar devices Scalable modeling of RF MOSFETs Power amplifier IC design Power amplifier design in silicon Efficiency enhancement of RF power amplifiers The description of state-of-the-art techniques makes this book a valuable and handy reference for practicing engineers and researchers, while the breadth of coverage makes it an ideal text for graduate- and advanced undergraduate-level courses in the area of RF power amplifier design and modeling.
Download or read book Advanced Microwave Circuits and Systems written by Vitaliy Zhurbenko and published by BoD – Books on Demand. This book was released on 2010-04-01 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on recent research work conducted by the authors dealing with the design and development of active and passive microwave components, integrated circuits and systems. It is divided into seven parts. In the first part comprising the first two chapters, alternative concepts and equations for multiport network analysis and characterization are provided. A thru-only de-embedding technique for accurate on-wafer characterization is introduced. The second part of the book corresponds to the analysis and design of ultra-wideband low- noise amplifiers (LNA).
Download or read book The Doherty Power Amplifier written by Paolo Colantonio and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Doherty Power Amplifier.
