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A majority of people now have a digital mobile device whether it be a cell phone, laptop, or blackberry. Now that we have the mobility we want it to be more versatile and dependable; RF power amplifiers accomplish just that. These amplifiers take a small input and make it stronger and larger creating a wider area of use with a more robust signal.Switching mode RF amplifiers have been theoretically possible for decades, but were largely impractical because they distort analog signals until they are unrecognizable. However, distortion is not an issue with digital signals-like those used

Power amplifiers. --- Microwave amplifiers. --- Microwave devices --- Amplifiers (Electronics)

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A majority of people now have a digital mobile device whether it be a cell phone, laptop, or blackberry. Now that we have the mobility we want it to be more versatile and dependable; RF power amplifiers accomplish just that. These amplifiers take a small input and make it stronger and larger creating a wider area of use with a more robust signal. Switching mode RF amplifiers have been theoretically possible for decades, but were largely impractical because they distort analog signals until they are unrecognizable. However, distortion is not an issue with digital signalslike those used by WLANs and digital cell phonesand switching mode RF amplifiers have become a hot area of RF/wireless design. This book explores both the theory behind switching mode RF amplifiers and design techniques for them. *Provides essential design and implementation techniques for use in cma2000, WiMAX, and other digital mobile standards *Both authors have written several articles on the topic and are well known in the industry *Includes specific design equations to greatly simplify the design of switchmode amplifiers.

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621.316.52 --- DC/DC omzetting --- PWM --- controlesystemen --- diagrammen --- elektronica --- elektrotechniek --- filters --- geschakelde voedingen --- lineaire systemen --- modelleren --- niet-lineaire systemen --- omvormers --- omzetters --- ontwerpen --- regelaars --- regeltechniek --- stabiliteit --- tijdsdomein --- toestandsruimte regelaars --- toestandsveranderlijken --- transfertfuncties --- vermogencellen --- vermogenelektronica --- voedingen --- DC-to-DC converters. --- DC-to-DC converters --- Direct current to direct current converters --- Electric current converters

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Improve your designs of high-efficiency switchmode RF and microwave power amplifiers and consume much less power. Combining solid theoretical discussions with practical design examples, this book is an essential reference on developing RF and microwave switchmode power amplifiers. Unique focus on switchmode RF and microwave power amplifiers that are widely used in cellular/wireless, satellite and radar communication systems and which offer major power consumption savings. Complete coverage of the new Doherty architecture which offers major efficiencies and savings on power consumption Balances theory with practical implementatation, avoiding a cookbook approach, enabling engineers to develop better designs. Trusted content from leading figures in the field with a Foreword of endorsement by Zoya Popovic With this book you will be able to: Design high-efficiency RF and microwave power amplifiers on different types of bipolar and field-effect transistors using well-known and novel theoretical approaches, nonlinear simulation tools, and practical design techniques 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 powerUnderstand the theory and practical implementation of load-network design techniques based on lumped and transmission-line elements Combine multi-stage Doherty architecture and switchmode power amplifiers to significantly increase efficiency of the entire radio transmitter Learn the different types of predistortion linearization techniques required to improve the quality of signal transmission in a nonlinear amplifying system New to this edition: . Comprehensive overview of different Doherty architectures which are, and will be used in modern communication systems to save power consumption and reduce costs . A new chapter on analog and digital predistortion techniques . Coverage of broadband Class-F power amplifiers, high-power inverse Class-F power amplifiers for WCDMA systems, broadband Class-E techniques Unique focus on switchmode RF and microwave power amplifiers that are widely used in cellular/wireless, satellite and radar communication systems and which offer major power consumption savingsComplete coverage of the new Doherty architecture which offers major efficiencies and savings on power consumptionBalances theory with practical implementatation, avoiding a cookbook approach, enabling engineers to develop better designs Trusted content from leading figures in the field with a Foreword of endorsement by Zoya Popovic.