Linear and Nonlinear Feedback Linearization of Radio Frequency Power Amplifiers PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Linear and Nonlinear Feedback Linearization of Radio Frequency Power Amplifiers PDF full book. Access full book title Linear and Nonlinear Feedback Linearization of Radio Frequency Power Amplifiers by Robert I. Bogya. Download full books in PDF and EPUB format.
Author: Robert I. Bogya Publisher: ISBN: Category : Amplifiers, Radio frequency Languages : en Pages : 158
Book Description
Radio frequency (RF) power amplifiers (PA) are the most power consuming components of a mobile communications unit. They are used to convert the DC power from the battery into RF power delivered to the antenna. In a cell phone it becomes very important to use highly efficient power amplifiers, such as Class C and Class E PAs, to increase the talk time which is directly proportional to the battery life. On the other hand these RF PAs are inherently nonlinear and will produce spectral regrowth and other undesirable effects. Therefore, to exploit their high efficiency, it is desirable to employ linearization techniques to linearize the overall response of these nonlinear amplifiers. Linear model matching and nonlinear multiplicative feedback linearization techniques are investigated in this work to compensate for PA onlinearities. The application of these techniques resulted in controller architectures that deliver excellent linearity performance of the compensated Class E and Class C PA models, making them very suitable in Wideband Code-Division Multiple-Access (W-CDMA) and Code-Division Multiple Access 2000 (CDMA2000) systems for transmission of multiple signals at high data rates, assuring that intermodulation distortion and spectral regrowth are minimized at the output of the power amplifier. Moreover, their high efficiency provides a significant extension of the battery lifetime.
Author: Robert I. Bogya Publisher: ISBN: Category : Amplifiers, Radio frequency Languages : en Pages : 158
Book Description
Radio frequency (RF) power amplifiers (PA) are the most power consuming components of a mobile communications unit. They are used to convert the DC power from the battery into RF power delivered to the antenna. In a cell phone it becomes very important to use highly efficient power amplifiers, such as Class C and Class E PAs, to increase the talk time which is directly proportional to the battery life. On the other hand these RF PAs are inherently nonlinear and will produce spectral regrowth and other undesirable effects. Therefore, to exploit their high efficiency, it is desirable to employ linearization techniques to linearize the overall response of these nonlinear amplifiers. Linear model matching and nonlinear multiplicative feedback linearization techniques are investigated in this work to compensate for PA onlinearities. The application of these techniques resulted in controller architectures that deliver excellent linearity performance of the compensated Class E and Class C PA models, making them very suitable in Wideband Code-Division Multiple-Access (W-CDMA) and Code-Division Multiple Access 2000 (CDMA2000) systems for transmission of multiple signals at high data rates, assuring that intermodulation distortion and spectral regrowth are minimized at the output of the power amplifier. Moreover, their high efficiency provides a significant extension of the battery lifetime.
Author: J.L. Dawson Publisher: Springer Science & Business Media ISBN: 140208062X Category : Technology & Engineering Languages : en Pages : 144
Book Description
Improving the performance of the power amplifier is the most pressing problem facing designers of modern radio-frequency (RF) transceivers. Linearity and power efficiency of the transmit path are of utmost importance, and the power amplifier has proven to be the bottleneck for both. High linearity enables transmission at the highest data rates for a given channel bandwidth, and power efficiency prolongs battery lifetime in portable units and reduces heat dissipation in high-power transmitters. Cartesian feedback is a power amplifier linearization technique that acts to soften the tradeoff between power efficiency and linearity in power amplifiers. Despite its compelling, fundamental advantages, the technique has not enjoyed widespread acceptance because of certain implementation difficulties. Feedback Linearization of RF Power Amplifiers introduces new techniques for overcoming the challenges faced by the designer of a Cartesian feedback system. The theory of the new techniques are described and analyzed in detail. The book culminates with the results of the first known fully integrated Cartesian feedback power amplifier system, whose design was enabled by the techniques described. Feedback Linearization of RF Power Amplifiers is a valuable reference work for engineers in the telecommunications industry, industry researchers, academic researchers.
Author: John Wood Publisher: Artech House ISBN: 1608071200 Category : Technology & Engineering Languages : en Pages : 379
Book Description
Wireless voice and data communications have made great improvements, with connectivity now virtually ubiquitous. Users are demanding essentially perfect transmission and reception of voice and data. The infrastructure that supports this wide connectivity and nearly error-free delivery of information is complex, costly, and continually being improved. This resource describes the mathematical methods and practical implementations of linearization techniques for RF power amplifiers for mobile communications. This includes a review of RF power amplifier design for high efficiency operation. Readers are also provided with mathematical approaches to modeling nonlinear dynamical systems, which can be applied in the context of modeling the PA for identification in a pre-distortion system. This book also describes typical approaches to linearization and digital pre-distortion that are used in practice.
Author: Xuejun Zhang Publisher: Artech House ISBN: 1580533744 Category : Technology & Engineering Languages : en Pages : 212
Book Description
Describes the outphasing approach to amplifier linearization that uses power-combining techniques to create a linear output waveform from two nonlinear input sources, and presents recent advances in resolving the limitations caused by the strict matching requirements between the two amplifiers and the microwave power wasted in the power-combing network. The authors discuss the linearity performance of outphasing amplifier systems, correction schemes based on training vectors, and power recycling in outphasing amplifiers. Zhang is an engineer with Qualcomm, while Larson and Asbeck are affiliated with the University of California, San Diego. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).
Author: Joel Vuolevi Publisher: Artech House ISBN: 9781580536295 Category : Technology & Engineering Languages : en Pages : 280
Book Description
Here is a thorough treatment of distortion in RF power amplifiers. This unique resource offers expert guidance in designing easily linearizable systems that have low memory effects. It offers you a detailed understanding of how the matching impedances of a power amplifier and other RF circuits can be tuned to minimize overall distortion. What's more, you see how to build models that can be used for distortion simulations.
Author: Abdullah Eroglu Publisher: CRC Press ISBN: 1498745776 Category : Technology & Engineering Languages : en Pages : 376
Book Description
RF power amplifiers are implemented in communication, semiconductor wafer processing, magnetic resonance imaging (MRI), and radar systems to produce RF signal with the desired characteristics to perform several critical tasks in the entire system. They can be designed to operate in linear or switch-mode, depending on the specific application. This book explores the design and implementation methods for both linear and switch-mode amplifiers with real world engineering problems. The text discusses phased controlled switch-mode amplifiers and distortion and modulation effects in RF amplifiers. It illustrates the interface and integration of components and sub-systems for RF amplifiers. The material is further reinforced with MATLAB design files.
Author: Jingchang Nan Publisher: CRC Press ISBN: 1000409597 Category : Technology & Engineering Languages : en Pages : 217
Book Description
This book is a summary of a series of achievements made by the authors and colleagues in the areas of radio frequency power amplifier modeling (including neural Volterra series modeling, neural network modeling, X-parameter modeling), nonlinear analysis methods, and power amplifier predistortion technology over the past 10 years. The book is organized into ten chapters, which respectively describe an overview of research of power amplifier behavioral models and predistortion technology, nonlinear characteristics of power amplifiers, power amplifier behavioral models and the basis of nonlinear analysis, an overview of power amplifier predistortion, Volterra series modeling of power amplifiers, power amplifier modeling based on neural networks, power amplifier modeling with X-parameters, the modeling of other power amplifiers, nonlinear circuit analysis methods, and predistortion algorithms and applications. Blending theory with analysis, this book will provide researchers and RF/microwave engineering students with a valuable resource.
Author: Abdullah Eroglu Publisher: CRC Press ISBN: 1482231654 Category : Technology & Engineering Languages : en Pages : 449
Book Description
Introduction to RF Power Amplifier Design and Simulation fills a gap in the existing literature by providing step-by-step guidance for the design of radio frequency (RF) power amplifiers, from analytical formulation to simulation, implementation, and measurement. Featuring numerous illustrations and examples of real-world engineering applications, this book: Gives an overview of intermodulation and elaborates on the difference between linear and nonlinear amplifiers Describes the high-frequency model and transient characteristics of metal–oxide–semiconductor field-effect transistors Details active device modeling techniques for transistors and parasitic extraction methods for active devices Explores network and scattering parameters, resonators, matching networks, and tools such as the Smith chart Covers power-sensing devices including four-port directional couplers and new types of reflectometers Presents RF filter designs for power amplifiers as well as application examples of special filter types Demonstrates the use of computer-aided design (CAD) tools, implementing systematic design techniques Blending theory with practice, Introduction to RF Power Amplifier Design and Simulation supplies engineers, researchers, and RF/microwave engineering students with a valuable resource for the creation of efficient, better-performing, low-profile, high-power RF amplifiers.
Author: Robert I. Bogya
Author: Robert I. Bogya
Author: J.L. Dawson
Author: Joel L. Dawson
Author: John Wood
Author: Xuejun Zhang
Author: Joel Vuolevi
Author: Abdullah Eroglu
Author: 
Author: Jingchang Nan
Author: Abdullah Eroglu