Chapter 2

Continuous-Time Systems

Things should be made as simple as possible, but not any simpler.

Albert Einstein (1879–1955) physicist

2.1 Introduction

In this chapter we will consider the following topics:

image Systems and their classification—The concept of system is useful in dealing with actual devices or processes for purposes of analysis and synthesis. A transmission line, for instance, carrying information from one point to another is a system, even though physically it is just wires connecting two terminals. Voltages and currents in this system are not just functions of time but also of space. It takes time for a voltage signal to “travel” ...

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