(Polarization) Signals downlinked from communications satellites often circularly polarized. The electric and magnetic fields rotate in a circular motion as they travel through space, analogous to movement along a spiral. The direction of rotation determines the type of circular polarization. A signal whose electric or magnetic fields rotate in a right-hand direction is termed right-hand circular polarized (RHCP); a signal rotating in the left-hand direction is termed left-hand circular polarized (LHCP).e use of circular polarization eliminates the need for skew adjustment in the reception equipment. In addition, circularly polarized signals are also not subject to Faraday Rotation, the rotation of polarity caused by the Earth's magnetic field and/or magnetic storms when a signal travels through the atmosphere. This resistance to Faraday rotation makes circular polarization eminently more suitable than linear polarization for voice and data relays via satellite. Adjacent high-powered direct broadcast Ku-band satellites in Europe have been configured to use opposite senses of circular polarization to decrease interference between satellites by virtue of cross-polarization discrimination built into the feed.