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Unformatted text preview: ECE311 Final Exam December 13, 2005 Name : ID : Problem ABET Outcome Points Score 1 6 15 2 6 13 3 6 7 4 8 7 5 8 7 6 7 13 7 6 6 8 1 10 9 1, 2, 3, 4 12 10 3, 4, 5 10 Total 100 1 1. (15 points) A plane wave is incident normally on an infinite planar perfect (electric) conductor. For the geometry shown, assume a phasor incident electric field in free space of E i = a x e jk z . (a) (8 points) Find expression for the incident halfspace fields, E 1 and H 1 , in the frequency domain (phasor form) and the time domain. 2 (b) (4 points) Find an expression for the surface current density at the conductor, i.e., z = 0. (c) (3 points) Find the Poynting vector s ( z ). 3 2. (13 points) Consider plane wave reflection from an infinite planar interface between free space (the inci dent halfspace) and some other dielectric medium which is infinite in extent. The standing wave pattern for the magnetic field, H = a x H x , is as shown. Find the wave impedance in Region 2, η 2 , as a function of the free space wave impedance, η ....
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This note was uploaded on 02/04/2012 for the course ECE 311 taught by Professor Peroulis during the Fall '08 term at Purdue.
 Fall '08
 peroulis

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