1
Polar Plot
Polar Plot
•
To sketch the polar plot of
G
(
j
ω
) for the
entire range of frequency
ω
, i.e., from 0 to
infinity, there are
four key points
that usually
need to be known:
•
the start of plot where
ω
= 0,
•
the end of plot where
ω
=
∞
,
•
where the plot crosses the real axis, i.e.,
Im[
G
(
j
ω
)] = 0,
and
•
where the plot crosses the imaginary axis, i.e.,
Re[
G
(
j
ω
)] = 0.

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