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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: 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: 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: 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: Abbas Mohammadi Publisher: Springer Science & Business Media ISBN: 3642276350 Category : Technology & Engineering Languages : en Pages : 302
Book Description
This practical resource offers a thorough examination of RF transceiver design for MIMO communications. Offering a practical view on MIMO wireless systems, this book extends fundamental concepts on classic wireless transceiver design techniques to MIMO transceivers. This helps reader gain a very comprehensive understanding of the subject. This in-depth volume describes many theoretical and implementation challenges on MIMO transceivers and provides the practical solutions for these issues. This comprehensive book provides thorough descriptions of MIMO theoretical concepts, MIMO single carrier and OFDM modulation, RF transceiver design concepts, power amplifier, MIMO transmitter design techniques and their RF impairments, MIMO receiver design methods, RF impairments study including nonlinearity, DC-offset, I/Q imbalance and phase noise and their compensation in OFDM and MIMO techniques. In addition, it provides the most practical techniques to realize RF front-ends in MIMO systems. This book is supported with many design equations and illustrations. The first book dedicated to RF Transceiver design for MIMO systems, this volume serves as a current, one-stop guide offering you cost-effective solutions for your challenging projects in the field.
Author: Marian K. Kazimierczuk Publisher: John Wiley & Sons ISBN: 0470699507 Category : Technology & Engineering Languages : en Pages : 429
Book Description
An advanced textbook covering the fundamental theory of RF power amplifiers and their uses, this book provides essential guidance for design procedures. The introduction explains the basic theory of RF power amplifiers besides providing the basic classification of the different types of RF power amplifier. It then systematically dedicates a chapter to each different of RF power amplifier covering A, B and C, D (full-bridge and half-bridge types), E (zero-voltage-switching and zero-current-switching), F and DE amplifiers. Throughout this comprehensive guide, the optimal operating conditions are explored and the possible causes for suboptimum operation explained. The book then considers integrated inductors and linearization techniques and LC Oscillators in the concluding chapters. A comprehensive text covering the fundamentals of RF power amplifiers and their range of applications in radio and TV broadcasting, wireless communications and radars. Presents accessible coverage of the complex principles of operation of RF power amplifiers and radio power systems. Introduces the fundamental design techniques and procedures for practitioners for RF power amplifiers. All chapters contain examples and design procedures throughout, with review questions and problems at the end of each chapter. A solutions manual is available for instructors upon enquiry
Author: Gernot Hueber Publisher: John Wiley & Sons ISBN: 0470277114 Category : Technology & Engineering Languages : en Pages : 608
Book Description
Summarizes cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Includes original contributions from distinguished researchers and professionals. Covers cutting-edge physical layer technologies for multi-mode wireless RF transceivers. Contributors are all leading researchers and professionals in this field.
Author: Tole Sutikno Publisher: Universitas Ahmad Dahlan ISBN: Category : Technology & Engineering Languages : en Pages : 88
Book Description
Bulletin of Electrical Engineering and Informatics is a peer-reviewed journal that publishes material on all aspects of electrical, electronics, instrumentation, control, telecommunication, computer engineering, information technology and informatics from the global world.
Author: J.L. Dawson
Author: J.L. Dawson
Author: Joel L. Dawson
Author: Robert I. Bogya
Author: 
Author: John Wood
Author: Mats Johansson
Author: Abbas Mohammadi
Author: Marian K. Kazimierczuk
Author: Gernot Hueber
Author: Tole Sutikno