Η =x.1.e^(αz).cos(ωt + z/2) A/m
a) For this wave the direction of travel is:
b) For this wave what is the intensity of the electric field?
c) Calculate the Pointing vector S = E x H for the wave.
d) Calculate the time average power flow density Sav for the wave and enter its magnitude. You do not need to indicate the orientation.
e) Calculate the loss tangent tanθε of the dielectric.
f) Calculate the coefficient of attenuation α for the wave propagating in the dielectric.
g) Calculate the skin depth & for the dielectric for this wave.
•full working would be appreciated for revision.
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A lossy dielectric has an intrinsic impedance : = 100/30* at a particular frequency. If at that frequency the electromagnetic plane wave propagating through the dielectric has its magnetic field intensity defined as Arile*cos(wt+) Am! a) For this wave the direction of travel is 1 Mark b) For this wave what is the intensity of the electric field? E- + "m" 3 Marks Calculate the Painting vector 5 = 2 *for the wave acce() +008/2wt ++3) W][m? 2 Marks a) Calculate the time average power flow density for the wave and enter its magnitude. You do not need to indicate the orientation • W|m" 2 Marks e) Calculate the loss tangent tan of the dielectric tan. 2 Marks Calculate the coefficient of attenuation a for the wave propagating in the dielectric Np|m" 3 Marks Calculate the skin depth 6 for the chielectric for this wave 5 2 Marks
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