Design of linear RF outphasing power amplifiers

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010020199	TK7872.P39 Z43 2003	Open Access Book	Book	Searching... Unknown
Searching... PSZ KL	30000010059973	TK7872.P39 Z43 2003	Open Access Book	Book	Searching... Unknown

This is the first book devoted exclusively to the outphasing power amplifier, covering the most recent research results on important aspects in practical design and applications. A compilation of all the proposed outphasing approaches, this is an important resource for engineers designing base station and mobile handset amplifiers, engineering managers and program managers supervising power amplifier designs, and R&D personnel in industry. The work enables you to: design microwave power amplifiers with higher efficiency and improved linearity at a lower cost; understand linearity and performance tradeoffs in microwave power amplifiers; and understand the effect of new modulation techniques on microwave power amplifiers.

Author Notes

Xuejun Zhang holds a Ph.D. in electrical engineering from the University of California, San Diego, an M.S. in electro-optics from the National University of Singapore, and a B.S. in semiconductor physics from Peking University, China.

He is senior engineer at Qualcomm Inc. He has published extensively.

050

Preface	p. xi
1 Introduction	p. 1
1.1 The Role of Power Amplifiers in Wireless Communication Systems	p. 1
1.2 Characterization of Power Amplifiers for Wireless Communications	p. 4
1.2.1 Power Amplifier Waveform Quality Measurements	p. 6
1.2.2 Power Efficiency Measurements	p. 19
1.3 Power Amplifier Linearization and Efficiency-Enhancement Techniques	p. 22
1.4 Outphasing Microwave Power Amplifiers	p. 27
1.4.1 Historical Perspectives on Outphasing Power Amplifiers	p. 27
1.4.2 Introduction to the Theory of Outphasing Amplification	p. 29
References	p. 32
2 Linearity Performance of Outphasing Power Amplifier Systems	p. 35
2.1 Introduction	p. 35
2.2 Digital Modulation Techniques	p. 36
2.2.1 QPSK and Its Variations	p. 36
2.2.2 QAM	p. 41
2.3 Baseband Filtering of Digital Data	p. 41
2.3.1 Raised Cosine Filter	p. 45
2.3.2 Gaussian Filter	p. 49
2.3.3 IS-95 Baseband Filter	p. 50
2.4 Signal Component Separation for Outphasing Amplifiers	p. 51
2.5 Path Imbalance and Its Effects on Linearity	p. 61
2.5.1 Two-Tone Linearity Analysis of an Outphased Amplifier with Path Mismatch Effects	p. 62
2.5.2 ACI Estimation with Gain and Phase Mismatch	p. 64
2.6 Effect of Quadrature Modulator Errors on Linearity	p. 67
2.6.1 Quadrature Modulator Error Minimization	p. 69
2.6.2 Quadrature Modulator Error Effects on Outphasing Systems	p. 72
2.7 SCS Quantization Error Effects on Outphasing Systems	p. 75
2.7.1 Error Effects of Quantization of the Source Signal	p. 75
2.7.2 Error Effects of Quantization of the Quadrature Signal	p. 76
2.8 Linearity Effects of Reconstruction Filter and DSP Sampling Rate	p. 79
2.9 Summary	p. 81
References	p. 83
3 Path Mismatch Reduction Techniques for Outphasing Amplifiers	p. 87
3.1 Introduction	p. 87
3.2 Correction Schemes Based on Training Vectors	p. 88
3.2.1 Baseband Preconditioning of Path Mismatch Errors	p. 89
3.2.2 Foreground Calibration Algorithm of Path Mismatch Errors	p. 91
3.3 Path Mismatch Error Correction Schemes Transparent to Data Transmission	p. 101
3.3.1 Phase-Only Correction Approach	p. 101
3.3.2 Simplex Search Algorithm Correction	p. 102
3.3.3 Direct Search Algorithm	p. 104
3.3.4 Background Calibration Algorithm	p. 105
3.4 Mismatch Correction Scheme for Broadband Applications	p. 112
3.5 VCO-Derived Synthesis	p. 114
3.5.1 CALLUM	p. 119
3.5.2 VLL	p. 124
References	p. 126
4 Power-Combining and Efficiency-Enhancement Techniques	p. 129
4.1 Introduction	p. 129
4.2 Power-Combining Techniques for Outphasing Amplifiers	p. 130
4.3 Amplifier Choices for Outphasing Systems	p. 135
4.4 Outphasing Amplifier Design Using Class A, B, and C Amplifiers	p. 137
4.5 Chireix Power-Combining Technique	p. 142
4.6 Combiner Design for Switching-Mode (Class D and Class E) Amplifiers	p. 145
4.6.1 Analysis of MOSFET-Based Class D Outphasing Amplifier with Lossless Combining	p. 147
4.6.2 Simulation and Discussion of MOS-Based Class D with Lossless Combining	p. 153
4.7 Application of Lossy Power Combiners to Outphasing Power Amplifiers	p. 156
4.8 Probability Distribution of Output Power and Its Impact on Efficiency	p. 159
4.9 Power Recycling in Outphasing Amplifiers	p. 163
4.9.1 Analysis of the Power-Recycling Network for a Continuous-Wave Signal	p. 164
4.9.2 Analysis and Discussion for Linear-Modulated Signals	p. 176
4.9.3 Practical Implementations	p. 184
References	p. 185
Selected Bibliography	p. 185
Appendix 4A	p. 186
4A.1 Available Power from the Hybrid Combiner	p. 186
4A.2 Recycling Efficiency and VSWR for Arbitrary Diode Model	p. 188
About the Authors	p. 191
Index	p. 193

Available:*

On Order

Summary

Summary

Author Notes

Table of Contents