1. Introduction 2. Frequency Domain Modeling and Simulation 2.1 The Small-Signal Model 2.2 Domains 2.3 Small-Signal Frequency Domain and Noise Stimulus 2.4 Small-Signal Frequency Domain Calculation 2.5 Small-Signal Noise Calculation 3. Special Quantities 3.1 Zero Order Hold 3.2 Transfer Functions 3.2.1 Laplace Transfer Function 3.2.2 Z-Domain Transfer Function 4. Rationale 4.1 The Small-Signal Model 4.1.1 Mathematical Background 4.1.2 Definition 4.2 Domains 4.3 Small-Signal Frequency Domain and Noise Stimulus 4.4 Small-Signal Frequency Domain and Noise Calculation 4.5 Zero-Order Hold 4.6 Transfer Functions 5. Alternatives Considered 5.1 Domains 5.2 Source Quantities Revision History