Signal Processing Course
Juha Vierinen
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Rotating phasors
Course book · Section 6 · Figure 6.2 ↗
\[X=Ae^{i\phi},\qquad z(t)=Xe^{i\omega t}=A e^{i(\omega t+\phi)}\]
Time
0.00 s
0 s
10 s
Angular frequency
+2.00 rad/s
Flip sign
−20
0
+20 rad/s
Initial phase
+0.25π rad
−π
0
+π
Amplitude
1.00
0
2
Phasor view
Complex
Re
Im
Show fundamental period (T)
T = 3.14 s
Phasor position
t = 0.0 s
Re
Im
Signal components
Re
+0.707
Im
+0.707
Amplitude
Time, t (s)
t = 0.00 s
T = 3.14 s