1

Outline
2
Introduction
Transfer Function
Frequency Response Plot
Bode Plot
Real Poles and Zeros

Bode Plot
3
Bode plots is a generalizations of obtaining the
frequency response of a network based on the
transfer functions.
Bode plots allow us to approximate the frequency
response
of
a
circuit
using
straight
line
approximations
and
becomes
the
industry
standard
method
of
presenting
frequency
response information

Introduction to Bode Plot
4
2 plots
–
both have logarithm of frequency on
x
-axis (
ω
)
Y-axis: magnitude of transfer function |
H
(
j
ω
)|, in dB
Y-axis: phase angle
θ
(
ω
), in degree
Can be used to interpret how the input affects the output
in both magnitude and phase over frequency,
ω
.