Chapter 8
More Analyses for Payload Development
8.1 Introduction
This chapter presents various analyses, additional to those in the previous chapter, which are useful for all stages of payload development, namely specification, design, and measurement. The analyses in this chapter involve no other element of the end-to-end communications system besides the payload (those that do are presented in Chapters 13). Any signal is assumed to be a carrier (CW), to reflect the manner in which payloads are usually specified. Each analysis is useful alone or together with others for a higher-level analysis.
The general topics covered in this chapter are the following:
- Section 8.2: How to deal with noise figure (every payload engineer should be able to estimate the noise figure of the payload in his head!)
- Section 8.3: How to keep payload performance budgets, an all-important topic, including an in-depth exploration of how to handle uncertainty
- Section 8.4: Miscellaneous analyses
How to characterize nonlinearity of low- and medium-power amplifier components How to know if HPA nonlinearity should be specified on C/3IM or NPR How to ease payload integration of combined TWTAs How to avoid most ...
