Book Description
This is the first book primarily about the satellite payload of satellite communications systems. It represents a unique combination of practical systems engineering and communications theory. It tells about the satellites in geostationary and lowearth orbits today, both the socalled bentpipe payloads and the processing payloads. The onorbit environment, mitigated by the spacecraft bus, is described. The payload units (e.g. antennas and amplifiers), as well as payloadintegration elements (e.g. waveguide and switches) are discussed in regard to how they work, what they do to the signal, their technology, environment sensitivity, and specifications. At a higher level are discussions on the payload as an entity: architecture including redundancy; specificationswhat they mean, how they relate to unit specifications, and how to verify; and specificationcompliance analysis ("budgets") with uncertainty. Aspects of probability theory handy for calculating and using uncertainty and variation are presented. The highestlevel discussions, on the endtoend communications system, start with a practical introduction to physicallayer communications theory. Atmospheric effects and interference on the communications link are described. A chapter gives an example of optimizing a multibeam payload via probabilistic analysis. Finally, practical tips on system simulation and emulation are provided. The carrier frequencies treated are 1 GHz and above. Familiarity with Fourier analysis will enhance understanding of some topics. References are provided throughout the book for readers who want to dig deeper.
Payload systems engineers, payload proposal writers, satellitecommunications systems designers and analysts, and satellite customers will find that the book cuts their learning time. Spacecraftbus systems engineers, payload unit engineers, and spacecraft operators will gain insight into the overall system. Students in systems engineering, microwave engineering, communications theory, probability theory, and communications simulation and modelling will find examples to supplement theoretical texts.
Table of Contents
 Cover
 Title Page
 Copyright
 Preface
 Acknowledgments
 About the Author
 Abbreviations
 Chapter 1: Introduction

Part I: Payload
 Chapter 2: Payload's OnOrbit Environment
 Chapter 3: Antenna
 Chapter 4: Filter and PayloadIntegration Elements
 Chapter 5: LowNoise Amplifier and Frequency Converter
 Chapter 6: Preamplifier and HighPower Amplifier

Chapter 7: Payload's Communications Parameters
 7.1 Introduction
 7.2 Gain Variation with Frequency
 7.3 Phase Variation with Frequency
 7.4 Channel Bandwidth
 7.5 Phase Noise
 7.6 Frequency Stability
 7.7 Spurious Signals from Frequency Converter
 7.8 HighPower Amplifier Nonlinearity
 7.9 Spurious Signals from HighPower Amplifier Subsystem
 7.10 Stability of Gain and PowerOut of HighPower Amplifier Subsystem
 7.11 Equivalent Isotropically Radiated Power
 7.12 Figure of Merit G/Ts
 7.13 SelfInterference
 7.14 Passive Intermodulation Products
 Appendix 7.A
 References
 Chapter 8: More Analyses for Payload Development
 Chapter 9: Processing Payload

Part II: Payload in EndtoEnd Communications System
 Chapter 10: Principles of Digital Communications Theory
 Chapter 11: Communications Link

Chapter 12: Probabilistic Treatment of Multibeam Downlinks
 12.1 Introduction
 12.2 MultibeamDownlink Payload Specifications
 12.3 RepeaterCaused Variation of C and C/Iself and Nominal Value
 12.4 Combining AntennaCaused Variation into RepeaterCaused Variation
 12.5 PayloadCaused Variation of C/(I+N)
 12.6 Combining AtmosphereCaused Variation into PayloadCaused Variation
 12.7 Optimizing MultibeamDownlink Payload Specified on Link Availability
 Appendix 12.A
 References
 Chapter 13: EndtoEnd Communications System Model with Focus on Payload
 Index
Product Information
 Title: Satellite Communications Payload and System
 Author(s):
 Release date: September 2012
 Publisher(s): WileyIEEE Press
 ISBN: 9781118345207