Antenna Theory - What is Polarization & What Are It's Different Types?
Polarization is defined as the orientation of electric field as a function of direction. The polarization of the radio wave can be defined by direction in which the electric vector E is aligned during the passage of at least one full cycle. Also polarization can also be defined the physical orientation of the radiated electromagnetic waves in space. The polarization are of three types. They are: Elliptical polarization. Circular polarization. Linear polarization. Linear Polarisation: A linearly polarized wave is one in which the electric field remains in only one direction.For a linearly polarized wave,the axial ratio(AR) is infinity. Elliptical Polarization: The electric field vector rotates and form a ellipse called polarization ellipse. The ratio of the major to the minor axes of the polarization ellipse is called the Axial Ratio (AR). AR is greater than 1 . Circular Polarization: The electric filed vector rotates and form a circle and this wave is called