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polarization of a propagating wave is determined by the locus or path described by the electric field vector with respect to time  1, fiche 1, Anglais, - polarization%20summary

Record number: 1, Textual support number: 1 OBS

Polarization is a term that often arises in the literature and when considering radio frequency communication and RFID. If we ascribe an x, y, z co-ordinate system to a propagating wave as illustrated below, with the direction of propagation being in the z direction, the electric field vector E will be in the x, y plane. If E remains in the same orientation with respect to time, so that its locus describes a straight line, the wave is said to be linearly polarized. However, if the locus describes a circular motion with respect to time the wave is said to be circularly polarized. Where the locus describes an elliptical path, the wave is said to be elliptically polarized.  1, fiche 1, Anglais, - polarization%20summary

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Circular polarization is often used in communication systems since the orientation of the transmitting and receiving antenna is less important than it is with linearly polarized waves. The magnetic vector, H, always remains perpendicular to the E vector. Using an IEEE convention, a clockwise circular rotating wavefront approaching a receiver is defined as being left-hand circular (LHC) polarized. The power in the wavefront is expressed in the form of the Poynting vector, P: P = (E x H) = E x H sin ..., where ... is the phase angle between E and H.  1, fiche 1, Anglais, - polarization%20summary

Record number: 1, Textual support number: 3 OBS

polarization summary: term and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].  2, fiche 1, Anglais, - polarization%20summary

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