Unformatted text preview: for the medium. b) Determine the propagation velocity v . c) Determine ± r and μ r . d) ±unction g ( t ) . 3. We have on x = 0 plane a pulse of sheet current J s ( t ) = ˆ y 2 t rect ( t τ ) A/m, where τ = 2 μ s. Regions adjacent to the current sheet are vacuum. a) Determine and plot E y ( x, t ) and H z ( x, t ) vs t for x = 1200 m. b) Repeat (a) for x =1200 m. c) Determine and plot E y ( x, t ) and H z ( x, t ) vs x for t = 5 μ s. d) Determine the TEM wave energy radiated per unit area (in J/m 2 units) by the current pulse J s ( t ) = ˆ y 2 t rect ( t τ ) A/m. Hint: integrate the power injected per unit area,J s · E , over the duration of pulse J s ( t ) . 4. Given a uniform TEM plane wave with H = cos( ωt + βz ) ˆ y A m , Fnd the corresponding E if ω β = 2 3 c and ± = 2 . 25 ± o . 1...
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 Fall '08
 Kim
 Electromagnet, Speed of light, 2 m, 108 m/s, plane TEM wave, 1200 m

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