Consider a microstrip transmission line, consisting of a conducting strip of width, 0.44 centimeters, of length 19.87 centimetres, resting on a substrate of relative permittivity, 6.3, relative permeability, 8.4, conductivity, 22.6 Siemens/meter and thickness, 0.405 millimetres. The transmission line also has a ground plane beneath the substrate of width, 4.4 centimetres and of same length as the conducting strip. The entire transmission line is surrounded by air.Assume that the charge on the strip conductor is Q = 2.0E-6 Coulombs and that the transmission line operates under steady current conditions. Also assume that the conductors are of negligible thickness and have conductivity, 61200000 Siemens/meter.

a Evaluate the potential difference between the two conductors (in V).

b Calculate the overall capacitance per unit length of this line (in F/m).

c Determine the stored energy density in the substrate (in J/m3).

d Determine the Joule heating power density in the substrate (in W/m3).

e Determine the stored energy density in the conducting strip and the ground plane (in J/m3).

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