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ebook PDF 《Advanced Techniques in RF Power Amplifier Design》

《Advanced Techniques in RF Power Amplifier Design》


 PDF 339pages


Preface xi
Acknowledgments xv
1 Class AB Amplifiers 1
1.1 Introduction 1
1.2 Classical Class AB Modes 2
1.3 Class AB: A Different Perspective 9
1.4 RF Bipolars: Vive La Difference 16
1.4.1 A Basic RF BJT Model 16
1.5 On Sweet Spots and IM Glitches 29
1.6 Conclusions 31
Reference 32
2 Doherty and Chireix 33
2.1 Introduction 33
2.2 The Doherty PA 34
2.2.1 Introduction and Formulation 34

2.2.2 The Classical Doherty Configuration 37
2.2.3 Variations on the Classical Configuration 42
2.2.4 Peaking Amplifier Configurations 49
2.2.5 Doherty PA Matching Topologies 52
2.2.6 The Multiple Doherty PA 56
2.2.7 Doherty PA Conclusions 56
2.3 The Chireix Outphasing PA 58
2.3.1 Introduction and Formulation 58
2.3.2 Discussion, Analysis, and Simulation 62
2.3.3 Variations 69
2.3.4 Chireix: Conclusions 71
References 72
3 Some Topics in PA Nonlinearity 73
3.1 Introduction 73
3.2 A Problem, a Solution, and Problems with the
Solution 74
3.3 Power Series, Volterra Series, and Polynomials 77
3.4 Two-Carrier Characterization 89
3.5 Memory and IM Asymmetry in RFPAs 94
3.6 PAs and Peak-to-Average Ratios 105
3.7 Conclusions 109
References 110
4 Feedback Techniques 111
4.1 Introduction 111
4.2 Feedback Techniques 114
4.3 Amplitude Envelope Feedback: Configuration and
Analysis 121
4.4 Vector Envelope Feedback 137

4.5 Low Latency PA Design 140
4.6 Variations 146
4.7 Conclusions 150
References 151
5 Predistortion Techniques 153
5.1 Introduction 153
5.2 Third-Degree PA: Predistortion Analysis 156
5.3 PD Characteristic for General PA Model 163
5.4 Practical Realization of the Predistorter Function:
Introduction 177
5.5 Analog Predistorters 179
5.6 DSP Predistortion 187
5.7 Conclusions 194
References 195
6 Feedforward Power Amplifiers 197
6.1 Introduction 197
6.2 The Feedforward Loop 198
6.3 AM-PM Correction in the Feedforward Loop 204
6.4 Error Insertion Coupling 208
6.5 Third-Degree Analysis of the Generalized
Feedforward (FFW) Loop 216
6.5.1 Formulation and Analysis 216
6.5.2 Tracking Errors 222
6.5.3 Compression Adjustment 224
6.5.4 Third-Degree Analysis: Conclusions 228
6.6 Feedforward Loop Simulation 229
6.6.1 Effect of AM-PM in Main PA 231
6.6.2 Gain Compression Adjustment 233

6.6.3 EPR Change 233
6.6.4 Gain and Phase Tracking 235
6.6.5 Multicarrier Simulation 235
6.7 Feedforward Loop Efficiency Considerations 236
6.8 Adaption and Correction: Closing the Loop 241
6.9 Variations 249
6.9.1 The Double Feedforward Loop 249
6.9.2 A Feedforward-Enhanced Power Combiner 252
6.9.3 “Budget” FFW Systems 253
6.10 Conclusions 255
References 256
7 Microwave Power Amplifiers 257
7.1 Introduction 257
7.2 Broadband Microwave Power Amplifier Design 259
7.2.1 Introduction 259
7.2.2 Broadband Matching Using Network Synthesis 259
7.2.3 Balanced Amplifiers 270
7.2.4 Broadband Power Amplifier Design Issues 273
7.3 Microwave Circuits and MIC Techniques 280
7.3.1 Introduction 280
7.3.2 Substrate and Heatsink Materials 281
7.3.3 MIC Components and Structures 283
7.4 PA Design Using Prematched Modules 287
7.4.1 Introduction 287
7.4.2 Matching Issues for IMTs 287
7.4.3 Biasing Issues for IMTs 290
7.4.4 Power Combining of IMTs 291
7.5 Distributed Amplifiers 293
7.6 Conclusions 296
References 297

Appendix 299
Notes 299
Selected Bibliography 300
Glossary 301
About the Author 305
Index 307



How far(long) the transmitter cover?

The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.

EXAMPLE 5W FM Transmitter use in the city and hometown:

I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).

I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).

I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).

Below are the approximate range of different power FM Transmitters. ( The range is diameter )

0.1W ~ 5W FM Transmitter :100M ~1KM

5W ~15W FM Ttransmitter : 1KM ~ 3KM

15W ~ 80W FM Transmitter : 3KM ~10KM

80W ~500W FM Transmitter : 10KM ~30KM

500W ~1000W FM Transmitter : 30KM ~ 50KM

1KW ~ 2KW FM Transmitter : 50KM ~100KM

2KW ~5KW FM Transmitter : 100KM ~150KM

5KW ~10KW FM Transmitter : 150KM ~200KM

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