# 329fall08hw5 - ECE 329 Homework 5 Due Thursday Oct 2 2008...

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ECE 329 Homework 5 Due: Thursday, Oct 2, 2008, 5PM E 1 = 2 cos( ω t - β z x V/m E 2 = E o cos( ω t - β z x - E o sin( ω t - β z y H 3 = cos( ω t + β z + π 3 x + sin( ω t + β z - π 6 y A/m H 4 = cos( ω t - β x z + sin( ω t - β x y A/m 1. For each of the four plane waves (in free space) described by E 1 , E 2 , H 3 , and H 4 given above: a) Determine the expression for H or E that accompanies the given wave field. b) Find the expression for instantaneous power that crosses a 1 m 2 area in the xy -plane from - z to + z . c) Find the corresponding field phasors ˜ E and ˜ H so that E = Re { ˜ E e j ω t } and H = Re { ˜ H e j ω t } in each case.
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