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All forms of polarization can be considered elliptical, including [[circular polarization|circular]] and [[linear polarization]].
<p>
By applying multiple dipole antennas driven by 90 degree phase shifts relative to one another, Electric field vector will rotate in a clockwise or counterclockwise direction depending on the phase shift.
<p>
Example
phase{E}=tan-1{Ey/Ex} <p>
|E| = (Ex^2 +Ey^2)^0.5<p>
Ey=(Eyo)*sin(wt)<p>
Ex=(Exo)*sin(wt+pi/2)<p>
|E| = E<p>
phase{E} = wt<p>
the electric field vector will rotate with an angular velocity w, in this particular case, counterclockwise. If Eyo = Exo, this is called circular polarization. If they are different, it is called elliptical polarization
[[Category:Polarization]]
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