National University of Singapore
Department of Electrical & Computer Engineering
EE2023 Signals & Systems Notes 2
This chapter focuses on
Classication of systems
Models of linear time invariant systems
1
Classification of Systems
Physical systems, in th
National University of Singapore
Department of Electrical & Computer Engineering
EE2023 Signals & Systems Revision Notes
1
Circuit Elements and their Models
1. Resistors, Capacitors and Inductors
Resistors
VR (t)
R
VR (s)
Frequency Domain : I(s) =
R
Time
National University of Singapore
Department of Electrical & Computer Engineering
EE2023 Signals and Systems Notes 4
1
Bode Diagrams of Frequency Responses
The frequency response of a system is the measure of how the system responds to a sinusoidal
input o
National University of Singapore
Department of Electrical & Computer Engineering
EE2023 Signals & Systems Notes 1
1
Signals
In this module, we are only interested in continuous time signals, as opposed to discrete time
signals. We begin with their mathema
National University of Singapore
Department of Electrical & Computer Engineering
EE2023 Signals & Systems Notes 3
1
Parameters in First and Second Order Systems
From the last chapter, you should have learnt that the transfer function G(s) are of the
gener
Recitation 5
Repeated roots
After reading this chapter you should be able
to use a continuity argument
to explain the non-geometric output of a mode with a double root.
Modes generate persistent outputs. So far our examples generate persistent geometric
Recitation 4
Modes
The goals of this chapter are:
to illustrate the experimental way that an engineer studies systems, even abstract, mathematical systems;
to illustrate what modes are by nding them for the Fibonacci system; and
to decompose second-ord
Recitation 1
Discrete and continuous systems
The goals of this chapter are:
to turn a description of a rst-order, continuous-time system into a differential equation;
to understand the systems behavior using a discrete-time approximation suitable for
pa