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· 분류 : 외국도서 > 중국 도서
· ISBN : 9780470540848
· 쪽수 : 400쪽
· 출판일 : 2012-09-11
목차
PREFACE xix
ACKNOWLEDGMENTS xxi
ABOUT THE AUTHOR xxiii
ABBREVIATIONS xxv
1 INTRODUCTION 1
1.1 What This Book Is About 1
1.2 Payload 3
1.3 Conventions 6
1.4 Book Sources 7
1.5 Summary of Rest of the Book 7
PART I PAYLOAD
2 PAYLOAD'S ON-ORBIT ENVIRONMENT 13
2.1 What Determines Environment 13
2.2 On-Orbit Environment 20
2.3 General Effects of Environment on Payload 27
3 ANTENNA 33
3.1 Introduction 33
3.2 General Antenna Concepts 35
3.3 Single-Beam Reflector Antenna 48
3.4 Horn 54
3.5 Antenna Array 57
3.6 Reflector-Based Multibeam Antenna 64
3.7 Autotrack 68
4 FILTER AND PAYLOAD-INTEGRATION ELEMENTS 79
4.1 Introduction 79
4.2 Impedance Mismatch 80
4.3 RF Lines for Payload Integration 82
4.3.1 Coaxial Cable 83
4.4 Other Payload-Integration Elements Aside from Switch 94
4.5 Filter 97
4.6 Switch and Redundancy 111
5 LOW-NOISE AMPLIFIER AND FREQUENCY CONVERTER 123
5.1 Introduction 123
5.2 Low-Noise Amplifiers and Frequency Converters in Payload 124
5.3 Intermodulation Products 126
5.4 Low-Noise Amplifier 127
5.4.1 LNA Unit Architecture and Technology 127
5.5 Frequency Converter 132
6 PREAMPLIFIER AND HIGH-POWER AMPLIFIER 147
6.1 Introduction 147
6.2 High-Power Amplifier Concepts and Terms 148
6.3 Traveling-Wave Tube Amplifier versus Solid-State Power Amplifier 153
6.4 Traveling-Wave Tube Amplifier Subsystem 155
6.5 Solid-State Power Amplifier 170
7 PAYLOAD'S COMMUNICATIONS PARAMETERS 181
7.1 Introduction 181
7.2 Gain Variation with Frequency 184
7.3 Phase Variation with Frequency 187
7.4 Channel Bandwidth 189
7.5 Phase Noise 190
7.6 Frequency Stability 190
7.7 Spurious Signals from Frequency Converter 191
7.8 High-Power Amplifier Nonlinearity 192
7.9 Spurious Signals from High-Power Amplifier Subsystem 192
7.10 Stability of Gain and Power-Out of High-Power Amplifier Subsystem 194
7.11 Equivalent Isotropically Radiated Power 195
7.12 Figure of Merit G/Ts 196
7.13 Self-Interference 199
7.14 Passive Intermodulation Products 201
8 MORE ANALYSES FOR PAYLOAD DEVELOPMENT 207
8.1 Introduction 207
8.2 How to Deal with Noise Figure 208
8.3 How to Make and Maintain Payload Performance Budgets 211
8.4 High-Power Amplifier Topics 223
8.5 How to Avoid Monte Carlo Simulations on Gaussian Random Variables 231
9 PROCESSING PAYLOAD 241
9.1 Introduction 241
9.2 Capabilities of Current Processing Payloads 242
9.3 Digital-Processing Elements Common to Both Nonregenerative and Regenerative Payloads 245
9.4 Nonregenerative Processing-Payload 248
9.5 Regenerative Payload 250
PART II PAYLOAD IN END-TO-END COMMUNICATIONS SYSTEM
10 PRINCIPLES OF DIGITAL COMMUNICATIONS THEORY 259
10.1 Introduction 259
10.2 Communications Theory Fundamentals 260
10.3 Modulating Transmitter 268
10.4 Filters 278
10.5 Demodulating Receiver 281
10.6 SNR, Es/N0, and Eb/N0 293
10.7 Summary of Signal Distortion Sources 295
11 COMMUNICATIONS LINK 299
11.1 Introduction 299
11.2 End-to-End C/N0 300
11.3 Signal Power on Link 301
11.4 Noise Level on Link 311
11.5 Interference on Link 312
11.6 Link Budget 317
12 PROBABILISTIC TREATMENT OF MULTIBEAM DOWNLINKS 321
12.1 Introduction 321
12.2 Multibeam-Downlink Payload Specifications 322
12.3 Repeater-Caused Variation of C and C/Iself and Nominal Value 324
12.4 Combining Antenna-Caused Variation into Repeater-Caused Variation 333
12.5 Payload-Caused Variation of CI(I+N) 337
12.6 Combining Atmosphere-Caused Variation into Payload-Caused Variation 337
12.7 Optimizing Multibeam-Downlink Payload Specified on Link Availability 339
13 END-TO-END COMMUNICATIONS SYSTEM MODEL WITH FOCUS ON PAYLOAD 343
13.1 Introduction 343
13.2 Considerations for Both Software Simulation and Hardware Emulation 344
13.3 Additional Considerations for Simulation 352
13.4 Additional Considerations for Emulation 359
References 362
INDEX 363
