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A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves.The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish.n advantage of parabolic antennas is that most of the structure of the antenna (all of it except the feed antenna) is nonresonant, so it can function over a wide range of frequencies, that is a wide bandwidth.
The polarization of an antenna is the polarization of the radiated fields produced by an antenna, evaluated in the far field. Hence, antennas are often classified as Linearly Polarized or a Right Hand Circularly Polarized Antenna. This simple concept is important for antenna to antenna communication.f one antenna is vertically polarized and the other is horizontally polarized, the angle is 90 degrees and no power will be transferred. As a side note, this explains why moving the cell phone on your head to a different angle can sometimes increase reception.