Workshop7Plasmas

Workshop7Plasmas - ECE 3030 Electromagnetic Fields and...

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Unformatted text preview: ECE 3030: Electromagnetic Fields and Waves Fall 2009 WORKSHOP 7 INSTRUCTOR NOTES: Plasma and Conductor Effects Reminder: There was no demo this week. Date: Thursday 10/15 1. Problem 12.9 A plane wave given by ~ E( ~ r ) = E ( √ 3ˆx + j 3ˆy- ˆ z)e- j ~ k i · ~ r is incident from free space upon a medium whose permittivity, ε , is 4 ε . The plane of incidence is the x- z plane. The interface is at z = 0, as shown in Figure 1. The frequency of the incident wave is ω . μ ε i θ r θ t θ μ ε t k & r k & i k & z y Figure 1: Oblique incidence on a dielectric. a. What is angle of transmission θ t ? Give a numerical value for the an- swer. b. What is the polarization of the incident wave (linear, right or left cir- cular, right or left elliptical, etc.)? Explain your answer. c. Write an expression for the electric field, ~ E r ( ~ r ), of the reflected wave in terms of the given parameters. There should be no unknown or un- specified variables in your answer....
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Workshop7Plasmas - ECE 3030 Electromagnetic Fields and...

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