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2.6 - Department of Electrical and Computer Engineering...

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Department of Electrical and Computer Engineering ECSE 352 Electromagnetic Waves and Optics 2 6 Polarization 2.6 Polarization References: Hayt and Buck 12.5 [email protected] 2.6-1 Overview Since the direction of the E-field of an EM wave can i t i di ti i hi h i th l t point in any direction in space which is orthogonal to the direction of propagation this gives rise to the concept of wave polarization. The simplest type of wave polarization is linear polarization, in which the direction of the electric field vector remains constant with time However more complex forms of constant with time. However more complex forms of polarization exist, including circular and elliptical polarization. We will see that polarization is a id d h ith f d widespread phenomenon with many forms and applications. ©AGK 2005 ECSE 352 2.6-2 Learning outcomes After taking this class you should be able to: Describe the concept of wave polarization List three polarization states and the conditions for them Determine the polarization from a mathematical description of the E or H fields Determine the instantaneous E or H fields given a description of the polarization state ©AGK 2005 ECSE 352 2.6-3 Contents Definition of linear polarization Circular and elliptical polarization Applications of polarized waves ©AGK 2005 ECSE 352 2.6-4
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