Switchmode RF Power Amplifiers (eBook)
448 Seiten
Elsevier Science (Verlag)
978-0-08-055064-0 (ISBN)
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 by WLANs and digital cell phones-and 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
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 by WLANs and digital cell phones-and 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
Front Cover 1
Switchmode RF Power Amplifiers 4
Copyright Page 5
Table of Contents 6
About Andrei Grebennikov 10
About Nathan O. Sokal 12
Preface 14
Acknowledgments 18
Chapter 1: Power-Amplifier Design Principles 20
1.1 Spectral-Domain Analysis 20
1.2 Basic Classes of Operation: A, AB, B, and C 26
1.4 High-Frequency Conduction Angle 39
1.5 Nonlinear Effect of Collector Capacitance 46
1.6 Push-Pull Power Amplifiers 49
References 69
Chapter 2: Class-D Power Amplifiers 74
2.1 Switched-Mode Power Amplifiers with Resistive Load 74
2.2 Complementary Voltage-Switching Configuration 83
2.3 Transformer-Coupled Voltage-Switching Configuration 88
2.4 Symmetrical Current-Switching Configuration 90
2.5 Transformer-Coupled Current-Switching Configuration 93
2.6 Voltage-Switching Configuration with Reactive Load 97
Chapter 3: Class-F Power Amplifiers 114
3.1 Biharmonic Operation Mode 114
3.6 Load Networks with Lumped Elements 142
Chapter 4: Inverse Class F 170
4.1 Biharmonic Operation Mode 170
4.4 Load Networks with Lumped Elements 181
References 195
Chapter 5: Class E with Shunt Capacitance 198
5.1 Effect of Detuned Resonant Circuit 198
5.2 Load Network with Shunt Capacitor and Series Filter 202
5.3 Matching with Standard Load 211
5.8 Load Network with Transmission Lines 232
5.9 Practical RF and Microwave Class-E Power Amplifiers and Applications 237
References 246
Chapter 6: Class E with Finite dc-Feed Inductance 252
6.1 Class E with One Capacitor and One Inductor 252
6.2 Generalized Class-E Load Network with Finite dc-Feed Inductance 260
6.7 Load Network with Transmission Lines 280
6.9 Power Gain 299
Chapter 7: Class E with Quarter-wave Transmission Line 312
7.1 Load Network with Parallel Quarter-wave Line 312
7.2 Optimum Load Network Parameters 320
7.4 Matching Circuit with Lumped Elements 326
References 333
Chapter 8: Alternative and Mixed-Mode High-Efficiency Power Amplifiers 334
8.2 Class-E/F Power Amplifiers 349
8.4 Inverse Class-E Power Amplifiers 363
Chapter 9: Computer-Aided Design of Switched-Mode Power Amplifiers 382
9.1 HB-PLUS Program for Half-Bridge and Full-Bridge Direct-Coupled Voltage-Switching Class-D and Class-DE Circuits 382
9.4 HB-PLUS CAD Examples for Class D and Class DE 394
9.5 HEPA-PLUS CAD Example for Class E 400
9.7 ADS Circuit Simulator and Its Applicability to Switched-Mode Class E 417
Index 440
| Erscheint lt. Verlag | 1.4.2011 |
|---|---|
| Sprache | englisch |
| Themenwelt | Mathematik / Informatik ► Informatik |
| Naturwissenschaften ► Physik / Astronomie ► Elektrodynamik | |
| Technik ► Elektrotechnik / Energietechnik | |
| Technik ► Nachrichtentechnik | |
| ISBN-10 | 0-08-055064-9 / 0080550649 |
| ISBN-13 | 978-0-08-055064-0 / 9780080550640 |
| Haben Sie eine Frage zum Produkt? |
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